Upgrade third_party/protobuf to v3.17.3 (#27227)

* update protobuf dependency

* version changes and generated files

* updating upb to use the latest proto and regen files

bazel/grpc_deps.bzl

@@ -212,11 +212,11 @@ def grpc_deps():
     if "com_google_protobuf" not in native.existing_rules():
         http_archive(
             name = "com_google_protobuf",
-            sha256 = "cf63d46ef743f4c30b0e36a562caf83cabed3f10e6ca49eb476913c4655394d5",
-            strip_prefix = "protobuf-436bd7880e458532901c58f4d9d1ea23fa7edd52",
+            sha256 = "dd53cb731b1b6b515d3d679644344bf33bb9f5b88c98187ae5c7be734a665c57",
+            strip_prefix = "protobuf-909a0f36a10075c4b4bc70fdee2c7e32dd612a72",
             urls = [
-                "https://storage.googleapis.com/grpc-bazel-mirror/github.com/protocolbuffers/protobuf/archive/436bd7880e458532901c58f4d9d1ea23fa7edd52.tar.gz",
-                "https://github.com/protocolbuffers/protobuf/archive/436bd7880e458532901c58f4d9d1ea23fa7edd52.tar.gz",
+                "https://storage.googleapis.com/grpc-bazel-mirror/github.com/protocolbuffers/protobuf/archive/909a0f36a10075c4b4bc70fdee2c7e32dd612a72.tar.gz",
+                "https://github.com/protocolbuffers/protobuf/archive/909a0f36a10075c4b4bc70fdee2c7e32dd612a72.tar.gz",
             ],
             patches = ["@com_github_grpc_grpc//third_party:protobuf.patch"],
             patch_args = ["-p1"],

build_handwritten.yaml

@@ -15,7 +15,7 @@ settings:
   core_version: 18.0.0
   csharp_major_version: 2
   g_stands_for: goat
-  protobuf_version: 3.15.8
+  protobuf_version: 3.17.3
   version: 1.41.0-dev
 targets:
 - name: check_epollexclusive

grpc.gemspec

@@ -32,7 +32,7 @@ Gem::Specification.new do |s|
   s.require_paths = %w( src/ruby/lib src/ruby/bin src/ruby/pb )
   s.platform      = Gem::Platform::RUBY
 
-  s.add_dependency 'google-protobuf', '~> 3.15'
+  s.add_dependency 'google-protobuf', '~> 3.17'
   s.add_dependency 'googleapis-common-protos-types', '~> 1.0'
 
   s.add_development_dependency 'bundler',            '>= 1.9'

src/core/ext/upbdefs-generated/google/protobuf/descriptor.upbdefs.c

@@ -67,7 +67,7 @@ static const upb_msglayout *layouts[27] = {
   &google_protobuf_GeneratedCodeInfo_Annotation_msginit,
 };
 
-static const char descriptor[7601] = {'\n', ' ', 'g', 'o', 'o', 'g', 'l', 'e', '/', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '/', 'd', 'e', 's', 'c', 'r', 'i', 'p', 
+static const char descriptor[7619] = {'\n', ' ', 'g', 'o', 'o', 'g', 'l', 'e', '/', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '/', 'd', 'e', 's', 'c', 'r', 'i', 'p', 
 't', 'o', 'r', '.', 'p', 'r', 'o', 't', 'o', '\022', '\017', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 
 'f', '\"', 'M', '\n', '\021', 'F', 'i', 'l', 'e', 'D', 'e', 's', 'c', 'r', 'i', 'p', 't', 'o', 'r', 'S', 'e', 't', '\022', '8', '\n', 
 '\004', 'f', 'i', 'l', 'e', '\030', '\001', ' ', '\003', '(', '\013', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 
@@ -256,7 +256,7 @@ static const char descriptor[7601] = {'\n', ' ', 'g', 'o', 'o', 'g', 'l', 'e', '
 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', '\"', ':', '\n', '\014', 'O', 'p', 't', 'i', 'm', 'i', 'z', 'e', 'M', 'o', 
 'd', 'e', '\022', '\t', '\n', '\005', 'S', 'P', 'E', 'E', 'D', '\020', '\001', '\022', '\r', '\n', '\t', 'C', 'O', 'D', 'E', '_', 'S', 'I', 'Z', 
 'E', '\020', '\002', '\022', '\020', '\n', '\014', 'L', 'I', 'T', 'E', '_', 'R', 'U', 'N', 'T', 'I', 'M', 'E', '\020', '\003', '*', '\t', '\010', '\350', 
-'\007', '\020', '\200', '\200', '\200', '\200', '\002', 'J', '\004', '\010', '&', '\020', '\'', '\"', '\321', '\002', '\n', '\016', 'M', 'e', 's', 's', 'a', 'g', 'e', 
+'\007', '\020', '\200', '\200', '\200', '\200', '\002', 'J', '\004', '\010', '&', '\020', '\'', '\"', '\343', '\002', '\n', '\016', 'M', 'e', 's', 's', 'a', 'g', 'e', 
 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', '<', '\n', '\027', 'm', 'e', 's', 's', 'a', 'g', 'e', '_', 's', 'e', 't', '_', 'w', 'i', 
 'r', 'e', '_', 'f', 'o', 'r', 'm', 'a', 't', '\030', '\001', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', '\024', 'm', 
 'e', 's', 's', 'a', 'g', 'e', 'S', 'e', 't', 'W', 'i', 'r', 'e', 'F', 'o', 'r', 'm', 'a', 't', '\022', 'L', '\n', '\037', 'n', 'o', 
@@ -269,109 +269,109 @@ static const char descriptor[7601] = {'\n', ' ', 'g', 'o', 'o', 'g', 'l', 'e', '
 'r', 'p', 'r', 'e', 't', 'e', 'd', '_', 'o', 'p', 't', 'i', 'o', 'n', '\030', '\347', '\007', ' ', '\003', '(', '\013', '2', '$', '.', 'g', 
 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'U', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 
 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', 'R', '\023', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 
-'p', 't', 'i', 'o', 'n', '*', '\t', '\010', '\350', '\007', '\020', '\200', '\200', '\200', '\200', '\002', 'J', '\004', '\010', '\010', '\020', '\t', 'J', '\004', '\010', 
-'\t', '\020', '\n', '\"', '\342', '\003', '\n', '\014', 'F', 'i', 'e', 'l', 'd', 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', 'A', '\n', '\005', 'c', 
-'t', 'y', 'p', 'e', '\030', '\001', ' ', '\001', '(', '\016', '2', '#', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 
-'b', 'u', 'f', '.', 'F', 'i', 'e', 'l', 'd', 'O', 'p', 't', 'i', 'o', 'n', 's', '.', 'C', 'T', 'y', 'p', 'e', ':', '\006', 'S', 
-'T', 'R', 'I', 'N', 'G', 'R', '\005', 'c', 't', 'y', 'p', 'e', '\022', '\026', '\n', '\006', 'p', 'a', 'c', 'k', 'e', 'd', '\030', '\002', ' ', 
-'\001', '(', '\010', 'R', '\006', 'p', 'a', 'c', 'k', 'e', 'd', '\022', 'G', '\n', '\006', 'j', 's', 't', 'y', 'p', 'e', '\030', '\006', ' ', '\001', 
-'(', '\016', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'F', 'i', 'e', 'l', 
-'d', 'O', 'p', 't', 'i', 'o', 'n', 's', '.', 'J', 'S', 'T', 'y', 'p', 'e', ':', '\t', 'J', 'S', '_', 'N', 'O', 'R', 'M', 'A', 
-'L', 'R', '\006', 'j', 's', 't', 'y', 'p', 'e', '\022', '\031', '\n', '\004', 'l', 'a', 'z', 'y', '\030', '\005', ' ', '\001', '(', '\010', ':', '\005', 
-'f', 'a', 'l', 's', 'e', 'R', '\004', 'l', 'a', 'z', 'y', '\022', '%', '\n', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', 
-'\030', '\003', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', 
-'\022', '\031', '\n', '\004', 'w', 'e', 'a', 'k', '\030', '\n', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', '\004', 'w', 'e', 
-'a', 'k', '\022', 'X', '\n', '\024', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', '_', 'o', 'p', 't', 'i', 'o', 
-'n', '\030', '\347', '\007', ' ', '\003', '(', '\013', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 
-'f', '.', 'U', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', 'R', '\023', 'u', 'n', 
-'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', '\"', '/', '\n', '\005', 'C', 'T', 'y', 'p', 
-'e', '\022', '\n', '\n', '\006', 'S', 'T', 'R', 'I', 'N', 'G', '\020', '\000', '\022', '\010', '\n', '\004', 'C', 'O', 'R', 'D', '\020', '\001', '\022', '\020', 
-'\n', '\014', 'S', 'T', 'R', 'I', 'N', 'G', '_', 'P', 'I', 'E', 'C', 'E', '\020', '\002', '\"', '5', '\n', '\006', 'J', 'S', 'T', 'y', 'p', 
-'e', '\022', '\r', '\n', '\t', 'J', 'S', '_', 'N', 'O', 'R', 'M', 'A', 'L', '\020', '\000', '\022', '\r', '\n', '\t', 'J', 'S', '_', 'S', 'T', 
-'R', 'I', 'N', 'G', '\020', '\001', '\022', '\r', '\n', '\t', 'J', 'S', '_', 'N', 'U', 'M', 'B', 'E', 'R', '\020', '\002', '*', '\t', '\010', '\350', 
-'\007', '\020', '\200', '\200', '\200', '\200', '\002', 'J', '\004', '\010', '\004', '\020', '\005', '\"', 's', '\n', '\014', 'O', 'n', 'e', 'o', 'f', 'O', 'p', 't', 
-'i', 'o', 'n', 's', '\022', 'X', '\n', '\024', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', '_', 'o', 'p', 't', 
-'i', 'o', 'n', '\030', '\347', '\007', ' ', '\003', '(', '\013', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 
-'b', 'u', 'f', '.', 'U', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', 'R', '\023', 
-'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', '*', '\t', '\010', '\350', '\007', '\020', 
-'\200', '\200', '\200', '\200', '\002', '\"', '\300', '\001', '\n', '\013', 'E', 'n', 'u', 'm', 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', '\037', '\n', '\013', 
-'a', 'l', 'l', 'o', 'w', '_', 'a', 'l', 'i', 'a', 's', '\030', '\002', ' ', '\001', '(', '\010', 'R', '\n', 'a', 'l', 'l', 'o', 'w', 'A', 
-'l', 'i', 'a', 's', '\022', '%', '\n', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\030', '\003', ' ', '\001', '(', '\010', ':', 
-'\005', 'f', 'a', 'l', 's', 'e', 'R', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\022', 'X', '\n', '\024', 'u', 'n', 'i', 
-'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', '_', 'o', 'p', 't', 'i', 'o', 'n', '\030', '\347', '\007', ' ', '\003', '(', '\013', '2', 
-'$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'U', 'n', 'i', 'n', 't', 'e', 'r', 
-'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', 'R', '\023', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 
-'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', '*', '\t', '\010', '\350', '\007', '\020', '\200', '\200', '\200', '\200', '\002', 'J', '\004', '\010', '\005', '\020', '\006', 
-'\"', '\236', '\001', '\n', '\020', 'E', 'n', 'u', 'm', 'V', 'a', 'l', 'u', 'e', 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', '%', '\n', '\n', 
-'d', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\030', '\001', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', '\n', 
-'d', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\022', 'X', '\n', '\024', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 
+'p', 't', 'i', 'o', 'n', '*', '\t', '\010', '\350', '\007', '\020', '\200', '\200', '\200', '\200', '\002', 'J', '\004', '\010', '\004', '\020', '\005', 'J', '\004', '\010', 
+'\005', '\020', '\006', 'J', '\004', '\010', '\006', '\020', '\007', 'J', '\004', '\010', '\010', '\020', '\t', 'J', '\004', '\010', '\t', '\020', '\n', '\"', '\342', '\003', '\n', 
+'\014', 'F', 'i', 'e', 'l', 'd', 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', 'A', '\n', '\005', 'c', 't', 'y', 'p', 'e', '\030', '\001', ' ', 
+'\001', '(', '\016', '2', '#', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'F', 'i', 'e', 
+'l', 'd', 'O', 'p', 't', 'i', 'o', 'n', 's', '.', 'C', 'T', 'y', 'p', 'e', ':', '\006', 'S', 'T', 'R', 'I', 'N', 'G', 'R', '\005', 
+'c', 't', 'y', 'p', 'e', '\022', '\026', '\n', '\006', 'p', 'a', 'c', 'k', 'e', 'd', '\030', '\002', ' ', '\001', '(', '\010', 'R', '\006', 'p', 'a', 
+'c', 'k', 'e', 'd', '\022', 'G', '\n', '\006', 'j', 's', 't', 'y', 'p', 'e', '\030', '\006', ' ', '\001', '(', '\016', '2', '$', '.', 'g', 'o', 
+'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'F', 'i', 'e', 'l', 'd', 'O', 'p', 't', 'i', 'o', 'n', 
+'s', '.', 'J', 'S', 'T', 'y', 'p', 'e', ':', '\t', 'J', 'S', '_', 'N', 'O', 'R', 'M', 'A', 'L', 'R', '\006', 'j', 's', 't', 'y', 
+'p', 'e', '\022', '\031', '\n', '\004', 'l', 'a', 'z', 'y', '\030', '\005', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', '\004', 
+'l', 'a', 'z', 'y', '\022', '%', '\n', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\030', '\003', ' ', '\001', '(', '\010', ':', 
+'\005', 'f', 'a', 'l', 's', 'e', 'R', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\022', '\031', '\n', '\004', 'w', 'e', 'a', 
+'k', '\030', '\n', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', '\004', 'w', 'e', 'a', 'k', '\022', 'X', '\n', '\024', 'u', 
+'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', '_', 'o', 'p', 't', 'i', 'o', 'n', '\030', '\347', '\007', ' ', '\003', '(', 
+'\013', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'U', 'n', 'i', 'n', 't', 
+'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', 'R', '\023', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 
+'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', '\"', '/', '\n', '\005', 'C', 'T', 'y', 'p', 'e', '\022', '\n', '\n', '\006', 'S', 'T', 
+'R', 'I', 'N', 'G', '\020', '\000', '\022', '\010', '\n', '\004', 'C', 'O', 'R', 'D', '\020', '\001', '\022', '\020', '\n', '\014', 'S', 'T', 'R', 'I', 'N', 
+'G', '_', 'P', 'I', 'E', 'C', 'E', '\020', '\002', '\"', '5', '\n', '\006', 'J', 'S', 'T', 'y', 'p', 'e', '\022', '\r', '\n', '\t', 'J', 'S', 
+'_', 'N', 'O', 'R', 'M', 'A', 'L', '\020', '\000', '\022', '\r', '\n', '\t', 'J', 'S', '_', 'S', 'T', 'R', 'I', 'N', 'G', '\020', '\001', '\022', 
+'\r', '\n', '\t', 'J', 'S', '_', 'N', 'U', 'M', 'B', 'E', 'R', '\020', '\002', '*', '\t', '\010', '\350', '\007', '\020', '\200', '\200', '\200', '\200', '\002', 
+'J', '\004', '\010', '\004', '\020', '\005', '\"', 's', '\n', '\014', 'O', 'n', 'e', 'o', 'f', 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', 'X', '\n', 
+'\024', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', '_', 'o', 'p', 't', 'i', 'o', 'n', '\030', '\347', '\007', ' ', 
+'\003', '(', '\013', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'U', 'n', 'i', 
+'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', 'R', '\023', 'u', 'n', 'i', 'n', 't', 'e', 'r', 
+'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', '*', '\t', '\010', '\350', '\007', '\020', '\200', '\200', '\200', '\200', '\002', '\"', '\300', 
+'\001', '\n', '\013', 'E', 'n', 'u', 'm', 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', '\037', '\n', '\013', 'a', 'l', 'l', 'o', 'w', '_', 'a', 
+'l', 'i', 'a', 's', '\030', '\002', ' ', '\001', '(', '\010', 'R', '\n', 'a', 'l', 'l', 'o', 'w', 'A', 'l', 'i', 'a', 's', '\022', '%', '\n', 
+'\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\030', '\003', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', 
+'\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 't', 'e', 'd', '\022', 'X', '\n', '\024', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 
+'t', 'e', 'd', '_', 'o', 'p', 't', 'i', 'o', 'n', '\030', '\347', '\007', ' ', '\003', '(', '\013', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 
+'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'U', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 
+'p', 't', 'i', 'o', 'n', 'R', '\023', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 
+'n', '*', '\t', '\010', '\350', '\007', '\020', '\200', '\200', '\200', '\200', '\002', 'J', '\004', '\010', '\005', '\020', '\006', '\"', '\236', '\001', '\n', '\020', 'E', 'n', 
+'u', 'm', 'V', 'a', 'l', 'u', 'e', 'O', 'p', 't', 'i', 'o', 'n', 's', '\022', '%', '\n', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 
+'t', 'e', 'd', '\030', '\001', ' ', '\001', '(', '\010', ':', '\005', 'f', 'a', 'l', 's', 'e', 'R', '\n', 'd', 'e', 'p', 'r', 'e', 'c', 'a', 
+'t', 'e', 'd', '\022', 'X', '\n', '\024', 'u', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', '_', 'o', 'p', 't', 'i', 
+'o', 'n', '\030', '\347', '\007', ' ', '\003', '(', '\013', '2', '$', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 
+'u', 'f', '.', 'U', 'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', 'R', '\023', 'u', 
+'n', 'i', 'n', 't', 'e', 'r', 'p', 'r', 'e', 't', 'e', 'd', 'O', 'p', 't', 'i', 'o', 'n', '*', '\t', '\010', '\350', '\007', '\020', '\200', 
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+'\001', 'R', '\004', 'p', 'a', 't', 'h', '\022', '\026', '\n', '\004', 's', 'p', 'a', 'n', '\030', '\002', ' ', '\003', '(', '\005', 'B', '\002', '\020', '\001', 
+'R', '\004', 's', 'p', 'a', 'n', '\022', ')', '\n', '\020', 'l', 'e', 'a', 'd', 'i', 'n', 'g', '_', 'c', 'o', 'm', 'm', 'e', 'n', 't', 
+'s', '\030', '\003', ' ', '\001', '(', '\t', 'R', '\017', 'l', 'e', 'a', 'd', 'i', 'n', 'g', 'C', 'o', 'm', 'm', 'e', 'n', 't', 's', '\022', 
+'+', '\n', '\021', 't', 'r', 'a', 'i', 'l', 'i', 'n', 'g', '_', 'c', 'o', 'm', 'm', 'e', 'n', 't', 's', '\030', '\004', ' ', '\001', '(', 
+'\t', 'R', '\020', 't', 'r', 'a', 'i', 'l', 'i', 'n', 'g', 'C', 'o', 'm', 'm', 'e', 'n', 't', 's', '\022', ':', '\n', '\031', 'l', 'e', 
+'a', 'd', 'i', 'n', 'g', '_', 'd', 'e', 't', 'a', 'c', 'h', 'e', 'd', '_', 'c', 'o', 'm', 'm', 'e', 'n', 't', 's', '\030', '\006', 
+' ', '\003', '(', '\t', 'R', '\027', 'l', 'e', 'a', 'd', 'i', 'n', 'g', 'D', 'e', 't', 'a', 'c', 'h', 'e', 'd', 'C', 'o', 'm', 'm', 
+'e', 'n', 't', 's', '\"', '\321', '\001', '\n', '\021', 'G', 'e', 'n', 'e', 'r', 'a', 't', 'e', 'd', 'C', 'o', 'd', 'e', 'I', 'n', 'f', 
+'o', '\022', 'M', '\n', '\n', 'a', 'n', 'n', 'o', 't', 'a', 't', 'i', 'o', 'n', '\030', '\001', ' ', '\003', '(', '\013', '2', '-', '.', 'g', 
+'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'G', 'e', 'n', 'e', 'r', 'a', 't', 'e', 'd', 'C', 
+'o', 'd', 'e', 'I', 'n', 'f', 'o', '.', 'A', 'n', 'n', 'o', 't', 'a', 't', 'i', 'o', 'n', 'R', '\n', 'a', 'n', 'n', 'o', 't', 
+'a', 't', 'i', 'o', 'n', '\032', 'm', '\n', '\n', 'A', 'n', 'n', 'o', 't', 'a', 't', 'i', 'o', 'n', '\022', '\026', '\n', '\004', 'p', 'a', 
+'t', 'h', '\030', '\001', ' ', '\003', '(', '\005', 'B', '\002', '\020', '\001', 'R', '\004', 'p', 'a', 't', 'h', '\022', '\037', '\n', '\013', 's', 'o', 'u', 
+'r', 'c', 'e', '_', 'f', 'i', 'l', 'e', '\030', '\002', ' ', '\001', '(', '\t', 'R', '\n', 's', 'o', 'u', 'r', 'c', 'e', 'F', 'i', 'l', 
+'e', '\022', '\024', '\n', '\005', 'b', 'e', 'g', 'i', 'n', '\030', '\003', ' ', '\001', '(', '\005', 'R', '\005', 'b', 'e', 'g', 'i', 'n', '\022', '\020', 
+'\n', '\003', 'e', 'n', 'd', '\030', '\004', ' ', '\001', '(', '\005', 'R', '\003', 'e', 'n', 'd', 'B', '~', '\n', '\023', 'c', 'o', 'm', '.', 'g', 
+'o', 'o', 'g', 'l', 'e', '.', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', 'B', '\020', 'D', 'e', 's', 'c', 'r', 'i', 'p', 't', 'o', 
+'r', 'P', 'r', 'o', 't', 'o', 's', 'H', '\001', 'Z', '-', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'g', 'o', 'l', 'a', 'n', 'g', '.', 
+'o', 'r', 'g', '/', 'p', 'r', 'o', 't', 'o', 'b', 'u', 'f', '/', 't', 'y', 'p', 'e', 's', '/', 'd', 'e', 's', 'c', 'r', 'i', 
+'p', 't', 'o', 'r', 'p', 'b', '\370', '\001', '\001', '\242', '\002', '\003', 'G', 'P', 'B', '\252', '\002', '\032', 'G', 'o', 'o', 'g', 'l', 'e', '.', 
+'P', 'r', 'o', 't', 'o', 'b', 'u', 'f', '.', 'R', 'e', 'f', 'l', 'e', 'c', 't', 'i', 'o', 'n', 
 };
 
 static upb_def_init *deps[1] = {
@@ -382,5 +382,5 @@ upb_def_init google_protobuf_descriptor_proto_upbdefinit = {
   deps,
   layouts,
   "google/protobuf/descriptor.proto",
-  UPB_STRVIEW_INIT(descriptor, 7601)
+  UPB_STRVIEW_INIT(descriptor, 7619)
 };

src/cpp/Protobuf-C++.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name     = 'Protobuf-C++'
-  s.version  = '3.15.8'
+  s.version  = '3.17.3'
   s.summary  = 'Protocol Buffers v3 runtime library for C++.'
   s.homepage = 'https://github.com/protocolbuffers/protobuf'
   s.license  = '3-Clause BSD License'

src/csharp/Grpc.Examples/Math.cs

@@ -55,19 +55,23 @@ namespace Math {
     private static readonly pb::MessageParser<DivArgs> _parser = new pb::MessageParser<DivArgs>(() => new DivArgs());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<DivArgs> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Math.MathReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DivArgs() {
       OnConstruction();
     }
@@ -75,6 +79,7 @@ namespace Math {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DivArgs(DivArgs other) : this() {
       dividend_ = other.dividend_;
       divisor_ = other.divisor_;
@@ -82,6 +87,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DivArgs Clone() {
       return new DivArgs(this);
     }
@@ -90,6 +96,7 @@ namespace Math {
     public const int DividendFieldNumber = 1;
     private long dividend_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Dividend {
       get { return dividend_; }
       set {
@@ -101,6 +108,7 @@ namespace Math {
     public const int DivisorFieldNumber = 2;
     private long divisor_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Divisor {
       get { return divisor_; }
       set {
@@ -109,11 +117,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as DivArgs);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(DivArgs other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -127,6 +137,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Dividend != 0L) hash ^= Dividend.GetHashCode();
@@ -138,11 +149,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -163,6 +176,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Dividend != 0L) {
         output.WriteRawTag(8);
@@ -179,6 +193,7 @@ namespace Math {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Dividend != 0L) {
@@ -194,6 +209,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(DivArgs other) {
       if (other == null) {
         return;
@@ -208,6 +224,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -233,6 +250,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -263,19 +281,23 @@ namespace Math {
     private static readonly pb::MessageParser<DivReply> _parser = new pb::MessageParser<DivReply>(() => new DivReply());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<DivReply> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Math.MathReflection.Descriptor.MessageTypes[1]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DivReply() {
       OnConstruction();
     }
@@ -283,6 +305,7 @@ namespace Math {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DivReply(DivReply other) : this() {
       quotient_ = other.quotient_;
       remainder_ = other.remainder_;
@@ -290,6 +313,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DivReply Clone() {
       return new DivReply(this);
     }
@@ -298,6 +322,7 @@ namespace Math {
     public const int QuotientFieldNumber = 1;
     private long quotient_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Quotient {
       get { return quotient_; }
       set {
@@ -309,6 +334,7 @@ namespace Math {
     public const int RemainderFieldNumber = 2;
     private long remainder_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Remainder {
       get { return remainder_; }
       set {
@@ -317,11 +343,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as DivReply);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(DivReply other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -335,6 +363,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Quotient != 0L) hash ^= Quotient.GetHashCode();
@@ -346,11 +375,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -371,6 +402,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Quotient != 0L) {
         output.WriteRawTag(8);
@@ -387,6 +419,7 @@ namespace Math {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Quotient != 0L) {
@@ -402,6 +435,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(DivReply other) {
       if (other == null) {
         return;
@@ -416,6 +450,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -441,6 +476,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -471,19 +507,23 @@ namespace Math {
     private static readonly pb::MessageParser<FibArgs> _parser = new pb::MessageParser<FibArgs>(() => new FibArgs());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<FibArgs> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Math.MathReflection.Descriptor.MessageTypes[2]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public FibArgs() {
       OnConstruction();
     }
@@ -491,12 +531,14 @@ namespace Math {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public FibArgs(FibArgs other) : this() {
       limit_ = other.limit_;
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public FibArgs Clone() {
       return new FibArgs(this);
     }
@@ -505,6 +547,7 @@ namespace Math {
     public const int LimitFieldNumber = 1;
     private long limit_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Limit {
       get { return limit_; }
       set {
@@ -513,11 +556,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as FibArgs);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(FibArgs other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -530,6 +575,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Limit != 0L) hash ^= Limit.GetHashCode();
@@ -540,11 +586,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -561,6 +609,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Limit != 0L) {
         output.WriteRawTag(8);
@@ -573,6 +622,7 @@ namespace Math {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Limit != 0L) {
@@ -585,6 +635,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(FibArgs other) {
       if (other == null) {
         return;
@@ -596,6 +647,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -617,6 +669,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -643,19 +696,23 @@ namespace Math {
     private static readonly pb::MessageParser<Num> _parser = new pb::MessageParser<Num>(() => new Num());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<Num> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Math.MathReflection.Descriptor.MessageTypes[3]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Num() {
       OnConstruction();
     }
@@ -663,12 +720,14 @@ namespace Math {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Num(Num other) : this() {
       num_ = other.num_;
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Num Clone() {
       return new Num(this);
     }
@@ -677,6 +736,7 @@ namespace Math {
     public const int Num_FieldNumber = 1;
     private long num_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Num_ {
       get { return num_; }
       set {
@@ -685,11 +745,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as Num);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(Num other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -702,6 +764,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Num_ != 0L) hash ^= Num_.GetHashCode();
@@ -712,11 +775,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -733,6 +798,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Num_ != 0L) {
         output.WriteRawTag(8);
@@ -745,6 +811,7 @@ namespace Math {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Num_ != 0L) {
@@ -757,6 +824,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(Num other) {
       if (other == null) {
         return;
@@ -768,6 +836,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -789,6 +858,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -815,19 +885,23 @@ namespace Math {
     private static readonly pb::MessageParser<FibReply> _parser = new pb::MessageParser<FibReply>(() => new FibReply());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<FibReply> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Math.MathReflection.Descriptor.MessageTypes[4]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public FibReply() {
       OnConstruction();
     }
@@ -835,12 +909,14 @@ namespace Math {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public FibReply(FibReply other) : this() {
       count_ = other.count_;
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public FibReply Clone() {
       return new FibReply(this);
     }
@@ -849,6 +925,7 @@ namespace Math {
     public const int CountFieldNumber = 1;
     private long count_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Count {
       get { return count_; }
       set {
@@ -857,11 +934,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as FibReply);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(FibReply other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -874,6 +953,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Count != 0L) hash ^= Count.GetHashCode();
@@ -884,11 +964,13 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -905,6 +987,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Count != 0L) {
         output.WriteRawTag(8);
@@ -917,6 +1000,7 @@ namespace Math {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Count != 0L) {
@@ -929,6 +1013,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(FibReply other) {
       if (other == null) {
         return;
@@ -940,6 +1025,7 @@ namespace Math {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -961,6 +1047,7 @@ namespace Math {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {

src/csharp/Grpc.HealthCheck/Health.cs

@@ -55,19 +55,23 @@ namespace Grpc.Health.V1 {
     private static readonly pb::MessageParser<HealthCheckRequest> _parser = new pb::MessageParser<HealthCheckRequest>(() => new HealthCheckRequest());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<HealthCheckRequest> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Health.V1.HealthReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HealthCheckRequest() {
       OnConstruction();
     }
@@ -75,12 +79,14 @@ namespace Grpc.Health.V1 {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HealthCheckRequest(HealthCheckRequest other) : this() {
       service_ = other.service_;
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HealthCheckRequest Clone() {
       return new HealthCheckRequest(this);
     }
@@ -89,6 +95,7 @@ namespace Grpc.Health.V1 {
     public const int ServiceFieldNumber = 1;
     private string service_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Service {
       get { return service_; }
       set {
@@ -97,11 +104,13 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as HealthCheckRequest);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(HealthCheckRequest other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -114,6 +123,7 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Service.Length != 0) hash ^= Service.GetHashCode();
@@ -124,11 +134,13 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -145,6 +157,7 @@ namespace Grpc.Health.V1 {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Service.Length != 0) {
         output.WriteRawTag(10);
@@ -157,6 +170,7 @@ namespace Grpc.Health.V1 {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Service.Length != 0) {
@@ -169,6 +183,7 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(HealthCheckRequest other) {
       if (other == null) {
         return;
@@ -180,6 +195,7 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -201,6 +217,7 @@ namespace Grpc.Health.V1 {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -227,19 +244,23 @@ namespace Grpc.Health.V1 {
     private static readonly pb::MessageParser<HealthCheckResponse> _parser = new pb::MessageParser<HealthCheckResponse>(() => new HealthCheckResponse());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<HealthCheckResponse> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Health.V1.HealthReflection.Descriptor.MessageTypes[1]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HealthCheckResponse() {
       OnConstruction();
     }
@@ -247,12 +268,14 @@ namespace Grpc.Health.V1 {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HealthCheckResponse(HealthCheckResponse other) : this() {
       status_ = other.status_;
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HealthCheckResponse Clone() {
       return new HealthCheckResponse(this);
     }
@@ -261,6 +284,7 @@ namespace Grpc.Health.V1 {
     public const int StatusFieldNumber = 1;
     private global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus status_ = global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.Unknown;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus Status {
       get { return status_; }
       set {
@@ -269,11 +293,13 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as HealthCheckResponse);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(HealthCheckResponse other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -286,6 +312,7 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Status != global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.Unknown) hash ^= Status.GetHashCode();
@@ -296,11 +323,13 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -317,6 +346,7 @@ namespace Grpc.Health.V1 {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Status != global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.Unknown) {
         output.WriteRawTag(8);
@@ -329,6 +359,7 @@ namespace Grpc.Health.V1 {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Status != global::Grpc.Health.V1.HealthCheckResponse.Types.ServingStatus.Unknown) {
@@ -341,6 +372,7 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(HealthCheckResponse other) {
       if (other == null) {
         return;
@@ -352,6 +384,7 @@ namespace Grpc.Health.V1 {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -373,6 +406,7 @@ namespace Grpc.Health.V1 {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -392,6 +426,7 @@ namespace Grpc.Health.V1 {
     #region Nested types
     /// <summary>Container for nested types declared in the HealthCheckResponse message type.</summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static partial class Types {
       public enum ServingStatus {
         [pbr::OriginalName("UNKNOWN")] Unknown = 0,

src/csharp/Grpc.IntegrationTesting/CoreStats/Stats.cs

@@ -51,19 +51,23 @@ namespace Grpc.Core {
     private static readonly pb::MessageParser<Bucket> _parser = new pb::MessageParser<Bucket>(() => new Bucket());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<Bucket> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Core.StatsReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Bucket() {
       OnConstruction();
     }
@@ -71,6 +75,7 @@ namespace Grpc.Core {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Bucket(Bucket other) : this() {
       start_ = other.start_;
       count_ = other.count_;
@@ -78,6 +83,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Bucket Clone() {
       return new Bucket(this);
     }
@@ -86,6 +92,7 @@ namespace Grpc.Core {
     public const int StartFieldNumber = 1;
     private double start_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double Start {
       get { return start_; }
       set {
@@ -97,6 +104,7 @@ namespace Grpc.Core {
     public const int CountFieldNumber = 2;
     private ulong count_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ulong Count {
       get { return count_; }
       set {
@@ -105,11 +113,13 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as Bucket);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(Bucket other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -123,6 +133,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Start != 0D) hash ^= pbc::ProtobufEqualityComparers.BitwiseDoubleEqualityComparer.GetHashCode(Start);
@@ -134,11 +145,13 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -159,6 +172,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Start != 0D) {
         output.WriteRawTag(9);
@@ -175,6 +189,7 @@ namespace Grpc.Core {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Start != 0D) {
@@ -190,6 +205,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(Bucket other) {
       if (other == null) {
         return;
@@ -204,6 +220,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -229,6 +246,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -259,19 +277,23 @@ namespace Grpc.Core {
     private static readonly pb::MessageParser<Histogram> _parser = new pb::MessageParser<Histogram>(() => new Histogram());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<Histogram> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Core.StatsReflection.Descriptor.MessageTypes[1]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Histogram() {
       OnConstruction();
     }
@@ -279,12 +301,14 @@ namespace Grpc.Core {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Histogram(Histogram other) : this() {
       buckets_ = other.buckets_.Clone();
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Histogram Clone() {
       return new Histogram(this);
     }
@@ -295,16 +319,19 @@ namespace Grpc.Core {
         = pb::FieldCodec.ForMessage(10, global::Grpc.Core.Bucket.Parser);
     private readonly pbc::RepeatedField<global::Grpc.Core.Bucket> buckets_ = new pbc::RepeatedField<global::Grpc.Core.Bucket>();
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public pbc::RepeatedField<global::Grpc.Core.Bucket> Buckets {
       get { return buckets_; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as Histogram);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(Histogram other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -317,6 +344,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       hash ^= buckets_.GetHashCode();
@@ -327,11 +355,13 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -345,6 +375,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       buckets_.WriteTo(ref output, _repeated_buckets_codec);
       if (_unknownFields != null) {
@@ -354,6 +385,7 @@ namespace Grpc.Core {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       size += buckets_.CalculateSize(_repeated_buckets_codec);
@@ -364,6 +396,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(Histogram other) {
       if (other == null) {
         return;
@@ -373,6 +406,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -394,6 +428,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -420,19 +455,23 @@ namespace Grpc.Core {
     private static readonly pb::MessageParser<Metric> _parser = new pb::MessageParser<Metric>(() => new Metric());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<Metric> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Core.StatsReflection.Descriptor.MessageTypes[2]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Metric() {
       OnConstruction();
     }
@@ -440,6 +479,7 @@ namespace Grpc.Core {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Metric(Metric other) : this() {
       name_ = other.name_;
       switch (other.ValueCase) {
@@ -455,6 +495,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Metric Clone() {
       return new Metric(this);
     }
@@ -463,6 +504,7 @@ namespace Grpc.Core {
     public const int NameFieldNumber = 1;
     private string name_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Name {
       get { return name_; }
       set {
@@ -473,6 +515,7 @@ namespace Grpc.Core {
     /// <summary>Field number for the "count" field.</summary>
     public const int CountFieldNumber = 10;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ulong Count {
       get { return valueCase_ == ValueOneofCase.Count ? (ulong) value_ : 0UL; }
       set {
@@ -484,6 +527,7 @@ namespace Grpc.Core {
     /// <summary>Field number for the "histogram" field.</summary>
     public const int HistogramFieldNumber = 11;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Core.Histogram Histogram {
       get { return valueCase_ == ValueOneofCase.Histogram ? (global::Grpc.Core.Histogram) value_ : null; }
       set {
@@ -501,22 +545,26 @@ namespace Grpc.Core {
     }
     private ValueOneofCase valueCase_ = ValueOneofCase.None;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ValueOneofCase ValueCase {
       get { return valueCase_; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void ClearValue() {
       valueCase_ = ValueOneofCase.None;
       value_ = null;
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as Metric);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(Metric other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -532,6 +580,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Name.Length != 0) hash ^= Name.GetHashCode();
@@ -545,11 +594,13 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -574,6 +625,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Name.Length != 0) {
         output.WriteRawTag(10);
@@ -594,6 +646,7 @@ namespace Grpc.Core {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Name.Length != 0) {
@@ -612,6 +665,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(Metric other) {
       if (other == null) {
         return;
@@ -635,6 +689,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -669,6 +724,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -708,19 +764,23 @@ namespace Grpc.Core {
     private static readonly pb::MessageParser<Stats> _parser = new pb::MessageParser<Stats>(() => new Stats());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<Stats> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Core.StatsReflection.Descriptor.MessageTypes[3]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Stats() {
       OnConstruction();
     }
@@ -728,12 +788,14 @@ namespace Grpc.Core {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Stats(Stats other) : this() {
       metrics_ = other.metrics_.Clone();
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Stats Clone() {
       return new Stats(this);
     }
@@ -744,16 +806,19 @@ namespace Grpc.Core {
         = pb::FieldCodec.ForMessage(10, global::Grpc.Core.Metric.Parser);
     private readonly pbc::RepeatedField<global::Grpc.Core.Metric> metrics_ = new pbc::RepeatedField<global::Grpc.Core.Metric>();
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public pbc::RepeatedField<global::Grpc.Core.Metric> Metrics {
       get { return metrics_; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as Stats);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(Stats other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -766,6 +831,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       hash ^= metrics_.GetHashCode();
@@ -776,11 +842,13 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -794,6 +862,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       metrics_.WriteTo(ref output, _repeated_metrics_codec);
       if (_unknownFields != null) {
@@ -803,6 +872,7 @@ namespace Grpc.Core {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       size += metrics_.CalculateSize(_repeated_metrics_codec);
@@ -813,6 +883,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(Stats other) {
       if (other == null) {
         return;
@@ -822,6 +893,7 @@ namespace Grpc.Core {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -843,6 +915,7 @@ namespace Grpc.Core {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {

src/csharp/Grpc.IntegrationTesting/EchoMessages.cs

@@ -73,19 +73,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<DebugInfo> _parser = new pb::MessageParser<DebugInfo>(() => new DebugInfo());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<DebugInfo> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.EchoMessagesReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DebugInfo() {
       OnConstruction();
     }
@@ -93,6 +97,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DebugInfo(DebugInfo other) : this() {
       stackEntries_ = other.stackEntries_.Clone();
       detail_ = other.detail_;
@@ -100,6 +105,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public DebugInfo Clone() {
       return new DebugInfo(this);
     }
@@ -110,6 +116,7 @@ namespace Grpc.Testing {
         = pb::FieldCodec.ForString(10);
     private readonly pbc::RepeatedField<string> stackEntries_ = new pbc::RepeatedField<string>();
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public pbc::RepeatedField<string> StackEntries {
       get { return stackEntries_; }
     }
@@ -118,6 +125,7 @@ namespace Grpc.Testing {
     public const int DetailFieldNumber = 2;
     private string detail_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Detail {
       get { return detail_; }
       set {
@@ -126,11 +134,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as DebugInfo);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(DebugInfo other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -144,6 +154,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       hash ^= stackEntries_.GetHashCode();
@@ -155,11 +166,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -177,6 +190,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       stackEntries_.WriteTo(ref output, _repeated_stackEntries_codec);
       if (Detail.Length != 0) {
@@ -190,6 +204,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       size += stackEntries_.CalculateSize(_repeated_stackEntries_codec);
@@ -203,6 +218,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(DebugInfo other) {
       if (other == null) {
         return;
@@ -215,6 +231,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -240,6 +257,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -273,19 +291,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<ErrorStatus> _parser = new pb::MessageParser<ErrorStatus>(() => new ErrorStatus());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<ErrorStatus> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.EchoMessagesReflection.Descriptor.MessageTypes[1]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ErrorStatus() {
       OnConstruction();
     }
@@ -293,6 +315,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ErrorStatus(ErrorStatus other) : this() {
       code_ = other.code_;
       errorMessage_ = other.errorMessage_;
@@ -301,6 +324,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ErrorStatus Clone() {
       return new ErrorStatus(this);
     }
@@ -309,6 +333,7 @@ namespace Grpc.Testing {
     public const int CodeFieldNumber = 1;
     private int code_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int Code {
       get { return code_; }
       set {
@@ -320,6 +345,7 @@ namespace Grpc.Testing {
     public const int ErrorMessageFieldNumber = 2;
     private string errorMessage_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string ErrorMessage {
       get { return errorMessage_; }
       set {
@@ -331,6 +357,7 @@ namespace Grpc.Testing {
     public const int BinaryErrorDetailsFieldNumber = 3;
     private string binaryErrorDetails_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string BinaryErrorDetails {
       get { return binaryErrorDetails_; }
       set {
@@ -339,11 +366,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as ErrorStatus);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(ErrorStatus other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -358,6 +387,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Code != 0) hash ^= Code.GetHashCode();
@@ -370,11 +400,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -399,6 +431,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Code != 0) {
         output.WriteRawTag(8);
@@ -419,6 +452,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Code != 0) {
@@ -437,6 +471,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(ErrorStatus other) {
       if (other == null) {
         return;
@@ -454,6 +489,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -483,6 +519,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -517,19 +554,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<RequestParams> _parser = new pb::MessageParser<RequestParams>(() => new RequestParams());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<RequestParams> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.EchoMessagesReflection.Descriptor.MessageTypes[2]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public RequestParams() {
       OnConstruction();
     }
@@ -537,6 +578,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public RequestParams(RequestParams other) : this() {
       echoDeadline_ = other.echoDeadline_;
       clientCancelAfterUs_ = other.clientCancelAfterUs_;
@@ -560,6 +602,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public RequestParams Clone() {
       return new RequestParams(this);
     }
@@ -568,6 +611,7 @@ namespace Grpc.Testing {
     public const int EchoDeadlineFieldNumber = 1;
     private bool echoDeadline_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool EchoDeadline {
       get { return echoDeadline_; }
       set {
@@ -579,6 +623,7 @@ namespace Grpc.Testing {
     public const int ClientCancelAfterUsFieldNumber = 2;
     private int clientCancelAfterUs_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int ClientCancelAfterUs {
       get { return clientCancelAfterUs_; }
       set {
@@ -590,6 +635,7 @@ namespace Grpc.Testing {
     public const int ServerCancelAfterUsFieldNumber = 3;
     private int serverCancelAfterUs_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int ServerCancelAfterUs {
       get { return serverCancelAfterUs_; }
       set {
@@ -601,6 +647,7 @@ namespace Grpc.Testing {
     public const int EchoMetadataFieldNumber = 4;
     private bool echoMetadata_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool EchoMetadata {
       get { return echoMetadata_; }
       set {
@@ -612,6 +659,7 @@ namespace Grpc.Testing {
     public const int CheckAuthContextFieldNumber = 5;
     private bool checkAuthContext_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool CheckAuthContext {
       get { return checkAuthContext_; }
       set {
@@ -623,6 +671,7 @@ namespace Grpc.Testing {
     public const int ResponseMessageLengthFieldNumber = 6;
     private int responseMessageLength_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int ResponseMessageLength {
       get { return responseMessageLength_; }
       set {
@@ -634,6 +683,7 @@ namespace Grpc.Testing {
     public const int EchoPeerFieldNumber = 7;
     private bool echoPeer_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool EchoPeer {
       get { return echoPeer_; }
       set {
@@ -648,6 +698,7 @@ namespace Grpc.Testing {
     /// will force check_auth_context.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string ExpectedClientIdentity {
       get { return expectedClientIdentity_; }
       set {
@@ -659,6 +710,7 @@ namespace Grpc.Testing {
     public const int SkipCancelledCheckFieldNumber = 9;
     private bool skipCancelledCheck_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool SkipCancelledCheck {
       get { return skipCancelledCheck_; }
       set {
@@ -670,6 +722,7 @@ namespace Grpc.Testing {
     public const int ExpectedTransportSecurityTypeFieldNumber = 10;
     private string expectedTransportSecurityType_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string ExpectedTransportSecurityType {
       get { return expectedTransportSecurityType_; }
       set {
@@ -681,6 +734,7 @@ namespace Grpc.Testing {
     public const int DebugInfoFieldNumber = 11;
     private global::Grpc.Testing.DebugInfo debugInfo_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.DebugInfo DebugInfo {
       get { return debugInfo_; }
       set {
@@ -695,6 +749,7 @@ namespace Grpc.Testing {
     /// Server should not see a request with this set.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool ServerDie {
       get { return serverDie_; }
       set {
@@ -706,6 +761,7 @@ namespace Grpc.Testing {
     public const int BinaryErrorDetailsFieldNumber = 13;
     private string binaryErrorDetails_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string BinaryErrorDetails {
       get { return binaryErrorDetails_; }
       set {
@@ -717,6 +773,7 @@ namespace Grpc.Testing {
     public const int ExpectedErrorFieldNumber = 14;
     private global::Grpc.Testing.ErrorStatus expectedError_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.ErrorStatus ExpectedError {
       get { return expectedError_; }
       set {
@@ -731,6 +788,7 @@ namespace Grpc.Testing {
     /// sleep when invoking server for deadline tests
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int ServerSleepUs {
       get { return serverSleepUs_; }
       set {
@@ -745,6 +803,7 @@ namespace Grpc.Testing {
     /// which backend to send request to
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int BackendChannelIdx {
       get { return backendChannelIdx_; }
       set {
@@ -756,6 +815,7 @@ namespace Grpc.Testing {
     public const int EchoMetadataInitiallyFieldNumber = 17;
     private bool echoMetadataInitially_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool EchoMetadataInitially {
       get { return echoMetadataInitially_; }
       set {
@@ -767,6 +827,7 @@ namespace Grpc.Testing {
     public const int ServerNotifyClientWhenStartedFieldNumber = 18;
     private bool serverNotifyClientWhenStarted_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool ServerNotifyClientWhenStarted {
       get { return serverNotifyClientWhenStarted_; }
       set {
@@ -775,11 +836,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as RequestParams);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(RequestParams other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -809,6 +872,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (EchoDeadline != false) hash ^= EchoDeadline.GetHashCode();
@@ -836,11 +900,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -925,6 +991,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (EchoDeadline != false) {
         output.WriteRawTag(8);
@@ -1005,6 +1072,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (EchoDeadline != false) {
@@ -1068,6 +1136,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(RequestParams other) {
       if (other == null) {
         return;
@@ -1136,6 +1205,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -1231,6 +1301,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -1331,19 +1402,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<EchoRequest> _parser = new pb::MessageParser<EchoRequest>(() => new EchoRequest());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<EchoRequest> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.EchoMessagesReflection.Descriptor.MessageTypes[3]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EchoRequest() {
       OnConstruction();
     }
@@ -1351,6 +1426,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EchoRequest(EchoRequest other) : this() {
       message_ = other.message_;
       param_ = other.param_ != null ? other.param_.Clone() : null;
@@ -1358,6 +1434,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EchoRequest Clone() {
       return new EchoRequest(this);
     }
@@ -1366,6 +1443,7 @@ namespace Grpc.Testing {
     public const int MessageFieldNumber = 1;
     private string message_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Message {
       get { return message_; }
       set {
@@ -1377,6 +1455,7 @@ namespace Grpc.Testing {
     public const int ParamFieldNumber = 2;
     private global::Grpc.Testing.RequestParams param_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.RequestParams Param {
       get { return param_; }
       set {
@@ -1385,11 +1464,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as EchoRequest);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(EchoRequest other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -1403,6 +1484,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Message.Length != 0) hash ^= Message.GetHashCode();
@@ -1414,11 +1496,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -1439,6 +1523,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Message.Length != 0) {
         output.WriteRawTag(10);
@@ -1455,6 +1540,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Message.Length != 0) {
@@ -1470,6 +1556,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(EchoRequest other) {
       if (other == null) {
         return;
@@ -1487,6 +1574,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -1515,6 +1603,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -1548,19 +1637,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<ResponseParams> _parser = new pb::MessageParser<ResponseParams>(() => new ResponseParams());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<ResponseParams> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.EchoMessagesReflection.Descriptor.MessageTypes[4]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ResponseParams() {
       OnConstruction();
     }
@@ -1568,6 +1661,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ResponseParams(ResponseParams other) : this() {
       requestDeadline_ = other.requestDeadline_;
       host_ = other.host_;
@@ -1576,6 +1670,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ResponseParams Clone() {
       return new ResponseParams(this);
     }
@@ -1584,6 +1679,7 @@ namespace Grpc.Testing {
     public const int RequestDeadlineFieldNumber = 1;
     private long requestDeadline_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long RequestDeadline {
       get { return requestDeadline_; }
       set {
@@ -1595,6 +1691,7 @@ namespace Grpc.Testing {
     public const int HostFieldNumber = 2;
     private string host_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Host {
       get { return host_; }
       set {
@@ -1606,6 +1703,7 @@ namespace Grpc.Testing {
     public const int PeerFieldNumber = 3;
     private string peer_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Peer {
       get { return peer_; }
       set {
@@ -1614,11 +1712,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as ResponseParams);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(ResponseParams other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -1633,6 +1733,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (RequestDeadline != 0L) hash ^= RequestDeadline.GetHashCode();
@@ -1645,11 +1746,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -1674,6 +1777,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (RequestDeadline != 0L) {
         output.WriteRawTag(8);
@@ -1694,6 +1798,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (RequestDeadline != 0L) {
@@ -1712,6 +1817,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(ResponseParams other) {
       if (other == null) {
         return;
@@ -1729,6 +1835,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -1758,6 +1865,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -1792,19 +1900,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<EchoResponse> _parser = new pb::MessageParser<EchoResponse>(() => new EchoResponse());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<EchoResponse> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.EchoMessagesReflection.Descriptor.MessageTypes[5]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EchoResponse() {
       OnConstruction();
     }
@@ -1812,6 +1924,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EchoResponse(EchoResponse other) : this() {
       message_ = other.message_;
       param_ = other.param_ != null ? other.param_.Clone() : null;
@@ -1819,6 +1932,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EchoResponse Clone() {
       return new EchoResponse(this);
     }
@@ -1827,6 +1941,7 @@ namespace Grpc.Testing {
     public const int MessageFieldNumber = 1;
     private string message_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Message {
       get { return message_; }
       set {
@@ -1838,6 +1953,7 @@ namespace Grpc.Testing {
     public const int ParamFieldNumber = 2;
     private global::Grpc.Testing.ResponseParams param_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.ResponseParams Param {
       get { return param_; }
       set {
@@ -1846,11 +1962,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as EchoResponse);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(EchoResponse other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -1864,6 +1982,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Message.Length != 0) hash ^= Message.GetHashCode();
@@ -1875,11 +1994,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -1900,6 +2021,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Message.Length != 0) {
         output.WriteRawTag(10);
@@ -1916,6 +2038,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Message.Length != 0) {
@@ -1931,6 +2054,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(EchoResponse other) {
       if (other == null) {
         return;
@@ -1948,6 +2072,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -1976,6 +2101,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {

src/csharp/Grpc.IntegrationTesting/Empty.cs

@@ -53,19 +53,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<Empty> _parser = new pb::MessageParser<Empty>(() => new Empty());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<Empty> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.EmptyReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Empty() {
       OnConstruction();
     }
@@ -73,21 +77,25 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Empty(Empty other) : this() {
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public Empty Clone() {
       return new Empty(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as Empty);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(Empty other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -99,6 +107,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (_unknownFields != null) {
@@ -108,11 +117,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -125,6 +136,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (_unknownFields != null) {
         _unknownFields.WriteTo(ref output);
@@ -133,6 +145,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (_unknownFields != null) {
@@ -142,6 +155,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(Empty other) {
       if (other == null) {
         return;
@@ -150,6 +164,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -167,6 +182,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {

src/csharp/Grpc.IntegrationTesting/Metrics.cs

@@ -56,19 +56,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<GaugeResponse> _parser = new pb::MessageParser<GaugeResponse>(() => new GaugeResponse());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<GaugeResponse> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.MetricsReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public GaugeResponse() {
       OnConstruction();
     }
@@ -76,6 +80,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public GaugeResponse(GaugeResponse other) : this() {
       name_ = other.name_;
       switch (other.ValueCase) {
@@ -94,6 +99,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public GaugeResponse Clone() {
       return new GaugeResponse(this);
     }
@@ -102,6 +108,7 @@ namespace Grpc.Testing {
     public const int NameFieldNumber = 1;
     private string name_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Name {
       get { return name_; }
       set {
@@ -112,6 +119,7 @@ namespace Grpc.Testing {
     /// <summary>Field number for the "long_value" field.</summary>
     public const int LongValueFieldNumber = 2;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long LongValue {
       get { return valueCase_ == ValueOneofCase.LongValue ? (long) value_ : 0L; }
       set {
@@ -123,6 +131,7 @@ namespace Grpc.Testing {
     /// <summary>Field number for the "double_value" field.</summary>
     public const int DoubleValueFieldNumber = 3;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double DoubleValue {
       get { return valueCase_ == ValueOneofCase.DoubleValue ? (double) value_ : 0D; }
       set {
@@ -134,6 +143,7 @@ namespace Grpc.Testing {
     /// <summary>Field number for the "string_value" field.</summary>
     public const int StringValueFieldNumber = 4;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string StringValue {
       get { return valueCase_ == ValueOneofCase.StringValue ? (string) value_ : ""; }
       set {
@@ -152,22 +162,26 @@ namespace Grpc.Testing {
     }
     private ValueOneofCase valueCase_ = ValueOneofCase.None;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ValueOneofCase ValueCase {
       get { return valueCase_; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void ClearValue() {
       valueCase_ = ValueOneofCase.None;
       value_ = null;
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as GaugeResponse);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(GaugeResponse other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -184,6 +198,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Name.Length != 0) hash ^= Name.GetHashCode();
@@ -198,11 +213,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -231,6 +248,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Name.Length != 0) {
         output.WriteRawTag(10);
@@ -255,6 +273,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Name.Length != 0) {
@@ -276,6 +295,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(GaugeResponse other) {
       if (other == null) {
         return;
@@ -299,6 +319,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -332,6 +353,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -373,19 +395,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<GaugeRequest> _parser = new pb::MessageParser<GaugeRequest>(() => new GaugeRequest());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<GaugeRequest> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.MetricsReflection.Descriptor.MessageTypes[1]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public GaugeRequest() {
       OnConstruction();
     }
@@ -393,12 +419,14 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public GaugeRequest(GaugeRequest other) : this() {
       name_ = other.name_;
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public GaugeRequest Clone() {
       return new GaugeRequest(this);
     }
@@ -407,6 +435,7 @@ namespace Grpc.Testing {
     public const int NameFieldNumber = 1;
     private string name_ = "";
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public string Name {
       get { return name_; }
       set {
@@ -415,11 +444,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as GaugeRequest);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(GaugeRequest other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -432,6 +463,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Name.Length != 0) hash ^= Name.GetHashCode();
@@ -442,11 +474,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -463,6 +497,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Name.Length != 0) {
         output.WriteRawTag(10);
@@ -475,6 +510,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Name.Length != 0) {
@@ -487,6 +523,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(GaugeRequest other) {
       if (other == null) {
         return;
@@ -498,6 +535,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -519,6 +557,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -545,19 +584,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<EmptyMessage> _parser = new pb::MessageParser<EmptyMessage>(() => new EmptyMessage());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<EmptyMessage> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.MetricsReflection.Descriptor.MessageTypes[2]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EmptyMessage() {
       OnConstruction();
     }
@@ -565,21 +608,25 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EmptyMessage(EmptyMessage other) : this() {
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public EmptyMessage Clone() {
       return new EmptyMessage(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as EmptyMessage);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(EmptyMessage other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -591,6 +638,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (_unknownFields != null) {
@@ -600,11 +648,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -617,6 +667,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (_unknownFields != null) {
         _unknownFields.WriteTo(ref output);
@@ -625,6 +676,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (_unknownFields != null) {
@@ -634,6 +686,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(EmptyMessage other) {
       if (other == null) {
         return;
@@ -642,6 +695,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -659,6 +713,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {

src/csharp/Grpc.IntegrationTesting/Payloads.cs

@@ -54,19 +54,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<ByteBufferParams> _parser = new pb::MessageParser<ByteBufferParams>(() => new ByteBufferParams());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<ByteBufferParams> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.PayloadsReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ByteBufferParams() {
       OnConstruction();
     }
@@ -74,6 +78,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ByteBufferParams(ByteBufferParams other) : this() {
       reqSize_ = other.reqSize_;
       respSize_ = other.respSize_;
@@ -81,6 +86,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ByteBufferParams Clone() {
       return new ByteBufferParams(this);
     }
@@ -89,6 +95,7 @@ namespace Grpc.Testing {
     public const int ReqSizeFieldNumber = 1;
     private int reqSize_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int ReqSize {
       get { return reqSize_; }
       set {
@@ -100,6 +107,7 @@ namespace Grpc.Testing {
     public const int RespSizeFieldNumber = 2;
     private int respSize_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int RespSize {
       get { return respSize_; }
       set {
@@ -108,11 +116,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as ByteBufferParams);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(ByteBufferParams other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -126,6 +136,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (ReqSize != 0) hash ^= ReqSize.GetHashCode();
@@ -137,11 +148,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -162,6 +175,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (ReqSize != 0) {
         output.WriteRawTag(8);
@@ -178,6 +192,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (ReqSize != 0) {
@@ -193,6 +208,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(ByteBufferParams other) {
       if (other == null) {
         return;
@@ -207,6 +223,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -232,6 +249,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -262,19 +280,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<SimpleProtoParams> _parser = new pb::MessageParser<SimpleProtoParams>(() => new SimpleProtoParams());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<SimpleProtoParams> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.PayloadsReflection.Descriptor.MessageTypes[1]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public SimpleProtoParams() {
       OnConstruction();
     }
@@ -282,6 +304,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public SimpleProtoParams(SimpleProtoParams other) : this() {
       reqSize_ = other.reqSize_;
       respSize_ = other.respSize_;
@@ -289,6 +312,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public SimpleProtoParams Clone() {
       return new SimpleProtoParams(this);
     }
@@ -297,6 +321,7 @@ namespace Grpc.Testing {
     public const int ReqSizeFieldNumber = 1;
     private int reqSize_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int ReqSize {
       get { return reqSize_; }
       set {
@@ -308,6 +333,7 @@ namespace Grpc.Testing {
     public const int RespSizeFieldNumber = 2;
     private int respSize_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int RespSize {
       get { return respSize_; }
       set {
@@ -316,11 +342,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as SimpleProtoParams);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(SimpleProtoParams other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -334,6 +362,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (ReqSize != 0) hash ^= ReqSize.GetHashCode();
@@ -345,11 +374,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -370,6 +401,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (ReqSize != 0) {
         output.WriteRawTag(8);
@@ -386,6 +418,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (ReqSize != 0) {
@@ -401,6 +434,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(SimpleProtoParams other) {
       if (other == null) {
         return;
@@ -415,6 +449,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -440,6 +475,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -474,19 +510,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<ComplexProtoParams> _parser = new pb::MessageParser<ComplexProtoParams>(() => new ComplexProtoParams());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<ComplexProtoParams> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.PayloadsReflection.Descriptor.MessageTypes[2]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ComplexProtoParams() {
       OnConstruction();
     }
@@ -494,21 +534,25 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ComplexProtoParams(ComplexProtoParams other) : this() {
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ComplexProtoParams Clone() {
       return new ComplexProtoParams(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as ComplexProtoParams);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(ComplexProtoParams other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -520,6 +564,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (_unknownFields != null) {
@@ -529,11 +574,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -546,6 +593,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (_unknownFields != null) {
         _unknownFields.WriteTo(ref output);
@@ -554,6 +602,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (_unknownFields != null) {
@@ -563,6 +612,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(ComplexProtoParams other) {
       if (other == null) {
         return;
@@ -571,6 +621,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -588,6 +639,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -610,19 +662,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<PayloadConfig> _parser = new pb::MessageParser<PayloadConfig>(() => new PayloadConfig());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<PayloadConfig> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.PayloadsReflection.Descriptor.MessageTypes[3]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public PayloadConfig() {
       OnConstruction();
     }
@@ -630,6 +686,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public PayloadConfig(PayloadConfig other) : this() {
       switch (other.PayloadCase) {
         case PayloadOneofCase.BytebufParams:
@@ -647,6 +704,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public PayloadConfig Clone() {
       return new PayloadConfig(this);
     }
@@ -654,6 +712,7 @@ namespace Grpc.Testing {
     /// <summary>Field number for the "bytebuf_params" field.</summary>
     public const int BytebufParamsFieldNumber = 1;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.ByteBufferParams BytebufParams {
       get { return payloadCase_ == PayloadOneofCase.BytebufParams ? (global::Grpc.Testing.ByteBufferParams) payload_ : null; }
       set {
@@ -665,6 +724,7 @@ namespace Grpc.Testing {
     /// <summary>Field number for the "simple_params" field.</summary>
     public const int SimpleParamsFieldNumber = 2;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.SimpleProtoParams SimpleParams {
       get { return payloadCase_ == PayloadOneofCase.SimpleParams ? (global::Grpc.Testing.SimpleProtoParams) payload_ : null; }
       set {
@@ -676,6 +736,7 @@ namespace Grpc.Testing {
     /// <summary>Field number for the "complex_params" field.</summary>
     public const int ComplexParamsFieldNumber = 3;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.ComplexProtoParams ComplexParams {
       get { return payloadCase_ == PayloadOneofCase.ComplexParams ? (global::Grpc.Testing.ComplexProtoParams) payload_ : null; }
       set {
@@ -694,22 +755,26 @@ namespace Grpc.Testing {
     }
     private PayloadOneofCase payloadCase_ = PayloadOneofCase.None;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public PayloadOneofCase PayloadCase {
       get { return payloadCase_; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void ClearPayload() {
       payloadCase_ = PayloadOneofCase.None;
       payload_ = null;
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as PayloadConfig);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(PayloadConfig other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -725,6 +790,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (payloadCase_ == PayloadOneofCase.BytebufParams) hash ^= BytebufParams.GetHashCode();
@@ -738,11 +804,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -767,6 +835,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (payloadCase_ == PayloadOneofCase.BytebufParams) {
         output.WriteRawTag(10);
@@ -787,6 +856,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (payloadCase_ == PayloadOneofCase.BytebufParams) {
@@ -805,6 +875,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(PayloadConfig other) {
       if (other == null) {
         return;
@@ -834,6 +905,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -878,6 +950,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {

src/csharp/Grpc.IntegrationTesting/Stats.cs

@@ -63,19 +63,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<ServerStats> _parser = new pb::MessageParser<ServerStats>(() => new ServerStats());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<ServerStats> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.StatsReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ServerStats() {
       OnConstruction();
     }
@@ -83,6 +87,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ServerStats(ServerStats other) : this() {
       timeElapsed_ = other.timeElapsed_;
       timeUser_ = other.timeUser_;
@@ -95,6 +100,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ServerStats Clone() {
       return new ServerStats(this);
     }
@@ -106,6 +112,7 @@ namespace Grpc.Testing {
     /// wall clock time change in seconds since last reset
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double TimeElapsed {
       get { return timeElapsed_; }
       set {
@@ -120,6 +127,7 @@ namespace Grpc.Testing {
     /// change in user time (in seconds) used by the server since last reset
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double TimeUser {
       get { return timeUser_; }
       set {
@@ -135,6 +143,7 @@ namespace Grpc.Testing {
     /// threads since last reset
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double TimeSystem {
       get { return timeSystem_; }
       set {
@@ -149,6 +158,7 @@ namespace Grpc.Testing {
     /// change in total cpu time of the server (data from proc/stat)
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ulong TotalCpuTime {
       get { return totalCpuTime_; }
       set {
@@ -163,6 +173,7 @@ namespace Grpc.Testing {
     /// change in idle time of the server (data from proc/stat)
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ulong IdleCpuTime {
       get { return idleCpuTime_; }
       set {
@@ -177,6 +188,7 @@ namespace Grpc.Testing {
     /// Number of polls called inside completion queue
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ulong CqPollCount {
       get { return cqPollCount_; }
       set {
@@ -191,6 +203,7 @@ namespace Grpc.Testing {
     /// Core library stats
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Core.Stats CoreStats {
       get { return coreStats_; }
       set {
@@ -199,11 +212,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as ServerStats);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(ServerStats other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -222,6 +237,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (TimeElapsed != 0D) hash ^= pbc::ProtobufEqualityComparers.BitwiseDoubleEqualityComparer.GetHashCode(TimeElapsed);
@@ -238,11 +254,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -283,6 +301,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (TimeElapsed != 0D) {
         output.WriteRawTag(9);
@@ -319,6 +338,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (TimeElapsed != 0D) {
@@ -349,6 +369,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(ServerStats other) {
       if (other == null) {
         return;
@@ -381,6 +402,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -429,6 +451,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -485,19 +508,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<HistogramParams> _parser = new pb::MessageParser<HistogramParams>(() => new HistogramParams());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<HistogramParams> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.StatsReflection.Descriptor.MessageTypes[1]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HistogramParams() {
       OnConstruction();
     }
@@ -505,6 +532,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HistogramParams(HistogramParams other) : this() {
       resolution_ = other.resolution_;
       maxPossible_ = other.maxPossible_;
@@ -512,6 +540,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HistogramParams Clone() {
       return new HistogramParams(this);
     }
@@ -523,6 +552,7 @@ namespace Grpc.Testing {
     /// first bucket is [0, 1 + resolution)
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double Resolution {
       get { return resolution_; }
       set {
@@ -537,6 +567,7 @@ namespace Grpc.Testing {
     /// use enough buckets to allow this value
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double MaxPossible {
       get { return maxPossible_; }
       set {
@@ -545,11 +576,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as HistogramParams);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(HistogramParams other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -563,6 +596,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (Resolution != 0D) hash ^= pbc::ProtobufEqualityComparers.BitwiseDoubleEqualityComparer.GetHashCode(Resolution);
@@ -574,11 +608,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -599,6 +635,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (Resolution != 0D) {
         output.WriteRawTag(9);
@@ -615,6 +652,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (Resolution != 0D) {
@@ -630,6 +668,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(HistogramParams other) {
       if (other == null) {
         return;
@@ -644,6 +683,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -669,6 +709,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -702,19 +743,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<HistogramData> _parser = new pb::MessageParser<HistogramData>(() => new HistogramData());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<HistogramData> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.StatsReflection.Descriptor.MessageTypes[2]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HistogramData() {
       OnConstruction();
     }
@@ -722,6 +767,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HistogramData(HistogramData other) : this() {
       bucket_ = other.bucket_.Clone();
       minSeen_ = other.minSeen_;
@@ -733,6 +779,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public HistogramData Clone() {
       return new HistogramData(this);
     }
@@ -743,6 +790,7 @@ namespace Grpc.Testing {
         = pb::FieldCodec.ForUInt32(10);
     private readonly pbc::RepeatedField<uint> bucket_ = new pbc::RepeatedField<uint>();
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public pbc::RepeatedField<uint> Bucket {
       get { return bucket_; }
     }
@@ -751,6 +799,7 @@ namespace Grpc.Testing {
     public const int MinSeenFieldNumber = 2;
     private double minSeen_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double MinSeen {
       get { return minSeen_; }
       set {
@@ -762,6 +811,7 @@ namespace Grpc.Testing {
     public const int MaxSeenFieldNumber = 3;
     private double maxSeen_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double MaxSeen {
       get { return maxSeen_; }
       set {
@@ -773,6 +823,7 @@ namespace Grpc.Testing {
     public const int SumFieldNumber = 4;
     private double sum_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double Sum {
       get { return sum_; }
       set {
@@ -784,6 +835,7 @@ namespace Grpc.Testing {
     public const int SumOfSquaresFieldNumber = 5;
     private double sumOfSquares_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double SumOfSquares {
       get { return sumOfSquares_; }
       set {
@@ -795,6 +847,7 @@ namespace Grpc.Testing {
     public const int CountFieldNumber = 6;
     private double count_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double Count {
       get { return count_; }
       set {
@@ -803,11 +856,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as HistogramData);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(HistogramData other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -825,6 +880,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       hash ^= bucket_.GetHashCode();
@@ -840,11 +896,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -878,6 +936,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       bucket_.WriteTo(ref output, _repeated_bucket_codec);
       if (MinSeen != 0D) {
@@ -907,6 +966,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       size += bucket_.CalculateSize(_repeated_bucket_codec);
@@ -932,6 +992,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(HistogramData other) {
       if (other == null) {
         return;
@@ -956,6 +1017,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -998,6 +1060,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -1045,19 +1108,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<RequestResultCount> _parser = new pb::MessageParser<RequestResultCount>(() => new RequestResultCount());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<RequestResultCount> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.StatsReflection.Descriptor.MessageTypes[3]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public RequestResultCount() {
       OnConstruction();
     }
@@ -1065,6 +1132,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public RequestResultCount(RequestResultCount other) : this() {
       statusCode_ = other.statusCode_;
       count_ = other.count_;
@@ -1072,6 +1140,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public RequestResultCount Clone() {
       return new RequestResultCount(this);
     }
@@ -1080,6 +1149,7 @@ namespace Grpc.Testing {
     public const int StatusCodeFieldNumber = 1;
     private int statusCode_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int StatusCode {
       get { return statusCode_; }
       set {
@@ -1091,6 +1161,7 @@ namespace Grpc.Testing {
     public const int CountFieldNumber = 2;
     private long count_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public long Count {
       get { return count_; }
       set {
@@ -1099,11 +1170,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as RequestResultCount);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(RequestResultCount other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -1117,6 +1190,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (StatusCode != 0) hash ^= StatusCode.GetHashCode();
@@ -1128,11 +1202,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -1153,6 +1229,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (StatusCode != 0) {
         output.WriteRawTag(8);
@@ -1169,6 +1246,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (StatusCode != 0) {
@@ -1184,6 +1262,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(RequestResultCount other) {
       if (other == null) {
         return;
@@ -1198,6 +1277,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -1223,6 +1303,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {
@@ -1253,19 +1334,23 @@ namespace Grpc.Testing {
     private static readonly pb::MessageParser<ClientStats> _parser = new pb::MessageParser<ClientStats>(() => new ClientStats());
     private pb::UnknownFieldSet _unknownFields;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pb::MessageParser<ClientStats> Parser { get { return _parser; } }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public static pbr::MessageDescriptor Descriptor {
       get { return global::Grpc.Testing.StatsReflection.Descriptor.MessageTypes[4]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     pbr::MessageDescriptor pb::IMessage.Descriptor {
       get { return Descriptor; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ClientStats() {
       OnConstruction();
     }
@@ -1273,6 +1358,7 @@ namespace Grpc.Testing {
     partial void OnConstruction();
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ClientStats(ClientStats other) : this() {
       latencies_ = other.latencies_ != null ? other.latencies_.Clone() : null;
       timeElapsed_ = other.timeElapsed_;
@@ -1285,6 +1371,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ClientStats Clone() {
       return new ClientStats(this);
     }
@@ -1296,6 +1383,7 @@ namespace Grpc.Testing {
     /// Latency histogram. Data points are in nanoseconds.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Testing.HistogramData Latencies {
       get { return latencies_; }
       set {
@@ -1310,6 +1398,7 @@ namespace Grpc.Testing {
     /// See ServerStats for details.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double TimeElapsed {
       get { return timeElapsed_; }
       set {
@@ -1321,6 +1410,7 @@ namespace Grpc.Testing {
     public const int TimeUserFieldNumber = 3;
     private double timeUser_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double TimeUser {
       get { return timeUser_; }
       set {
@@ -1332,6 +1422,7 @@ namespace Grpc.Testing {
     public const int TimeSystemFieldNumber = 4;
     private double timeSystem_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public double TimeSystem {
       get { return timeSystem_; }
       set {
@@ -1348,6 +1439,7 @@ namespace Grpc.Testing {
     /// Number of failed requests (one row per status code seen)
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public pbc::RepeatedField<global::Grpc.Testing.RequestResultCount> RequestResults {
       get { return requestResults_; }
     }
@@ -1359,6 +1451,7 @@ namespace Grpc.Testing {
     /// Number of polls called inside completion queue
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public ulong CqPollCount {
       get { return cqPollCount_; }
       set {
@@ -1373,6 +1466,7 @@ namespace Grpc.Testing {
     /// Core library stats
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public global::Grpc.Core.Stats CoreStats {
       get { return coreStats_; }
       set {
@@ -1381,11 +1475,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
       return Equals(other as ClientStats);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public bool Equals(ClientStats other) {
       if (ReferenceEquals(other, null)) {
         return false;
@@ -1404,6 +1500,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override int GetHashCode() {
       int hash = 1;
       if (latencies_ != null) hash ^= Latencies.GetHashCode();
@@ -1420,11 +1517,13 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override string ToString() {
       return pb::JsonFormatter.ToDiagnosticString(this);
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void WriteTo(pb::CodedOutputStream output) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       output.WriteRawMessage(this);
@@ -1462,6 +1561,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalWriteTo(ref pb::WriteContext output) {
       if (latencies_ != null) {
         output.WriteRawTag(10);
@@ -1495,6 +1595,7 @@ namespace Grpc.Testing {
     #endif
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public int CalculateSize() {
       int size = 0;
       if (latencies_ != null) {
@@ -1523,6 +1624,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(ClientStats other) {
       if (other == null) {
         return;
@@ -1556,6 +1658,7 @@ namespace Grpc.Testing {
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public void MergeFrom(pb::CodedInputStream input) {
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
       input.ReadRawMessage(this);
@@ -1607,6 +1710,7 @@ namespace Grpc.Testing {
 
     #if !GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     void pb::IBufferMessage.InternalMergeFrom(ref pb::ParseContext input) {
       uint tag;
       while ((tag = input.ReadTag()) != 0) {

src/csharp/build/dependencies.props

@@ -2,6 +2,6 @@
 <Project>
   <PropertyGroup>
     <GrpcCsharpVersion>2.41.0-dev</GrpcCsharpVersion>
-    <GoogleProtobufVersion>3.15.8</GoogleProtobufVersion>
+    <GoogleProtobufVersion>3.17.3</GoogleProtobufVersion>
   </PropertyGroup>
 </Project>

src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec

@@ -100,7 +100,7 @@ Pod::Spec.new do |s|
   s.preserve_paths = plugin
 
   # Restrict the protoc version to the one supported by this plugin.
-  s.dependency '!ProtoCompiler', '3.15.8'
+  s.dependency '!ProtoCompiler', '3.17.3'
   # For the Protobuf dependency not to complain:
   s.ios.deployment_target = '9.0'
   s.osx.deployment_target = '10.10'

src/objective-c/!ProtoCompiler-gRPCPlugin.podspec

@@ -102,7 +102,7 @@ Pod::Spec.new do |s|
   s.preserve_paths = plugin
 
   # Restrict the protoc version to the one supported by this plugin.
-  s.dependency '!ProtoCompiler', '3.15.8'
+  s.dependency '!ProtoCompiler', '3.17.3'
   # For the Protobuf dependency not to complain:
   s.ios.deployment_target = '9.0'
   s.osx.deployment_target = '10.10'

src/objective-c/!ProtoCompiler.podspec

@@ -36,7 +36,7 @@ Pod::Spec.new do |s|
   # exclamation mark ensures that other "regular" pods will be able to find it as it'll be installed
   # before them.
   s.name     = '!ProtoCompiler'
-  v = '3.15.8'
+  v = '3.17.3'
   s.version  = v
   s.summary  = 'The Protobuf Compiler (protoc) generates Objective-C files from .proto files'
   s.description = <<-DESC

src/php/tests/interop/Grpc/Testing/ResponseParameters.php

@@ -126,7 +126,7 @@ class ResponseParameters extends \Google\Protobuf\Internal\Message
      */
     public function getCompressed()
     {
-        return isset($this->compressed) ? $this->compressed : null;
+        return $this->compressed;
     }
 
     public function hasCompressed()

src/php/tests/interop/Grpc/Testing/SimpleRequest.php

@@ -179,7 +179,7 @@ class SimpleRequest extends \Google\Protobuf\Internal\Message
      */
     public function getPayload()
     {
-        return isset($this->payload) ? $this->payload : null;
+        return $this->payload;
     }
 
     public function hasPayload()
@@ -270,7 +270,7 @@ class SimpleRequest extends \Google\Protobuf\Internal\Message
      */
     public function getResponseCompressed()
     {
-        return isset($this->response_compressed) ? $this->response_compressed : null;
+        return $this->response_compressed;
     }
 
     public function hasResponseCompressed()
@@ -309,7 +309,7 @@ class SimpleRequest extends \Google\Protobuf\Internal\Message
      */
     public function getResponseStatus()
     {
-        return isset($this->response_status) ? $this->response_status : null;
+        return $this->response_status;
     }
 
     public function hasResponseStatus()
@@ -345,7 +345,7 @@ class SimpleRequest extends \Google\Protobuf\Internal\Message
      */
     public function getExpectCompressed()
     {
-        return isset($this->expect_compressed) ? $this->expect_compressed : null;
+        return $this->expect_compressed;
     }
 
     public function hasExpectCompressed()

src/php/tests/interop/Grpc/Testing/SimpleResponse.php

@@ -89,7 +89,7 @@ class SimpleResponse extends \Google\Protobuf\Internal\Message
      */
     public function getPayload()
     {
-        return isset($this->payload) ? $this->payload : null;
+        return $this->payload;
     }
 
     public function hasPayload()

src/php/tests/interop/Grpc/Testing/StreamingInputCallRequest.php

@@ -59,7 +59,7 @@ class StreamingInputCallRequest extends \Google\Protobuf\Internal\Message
      */
     public function getPayload()
     {
-        return isset($this->payload) ? $this->payload : null;
+        return $this->payload;
     }
 
     public function hasPayload()
@@ -98,7 +98,7 @@ class StreamingInputCallRequest extends \Google\Protobuf\Internal\Message
      */
     public function getExpectCompressed()
     {
-        return isset($this->expect_compressed) ? $this->expect_compressed : null;
+        return $this->expect_compressed;
     }
 
     public function hasExpectCompressed()

src/php/tests/interop/Grpc/Testing/StreamingOutputCallRequest.php

@@ -133,7 +133,7 @@ class StreamingOutputCallRequest extends \Google\Protobuf\Internal\Message
      */
     public function getPayload()
     {
-        return isset($this->payload) ? $this->payload : null;
+        return $this->payload;
     }
 
     public function hasPayload()
@@ -169,7 +169,7 @@ class StreamingOutputCallRequest extends \Google\Protobuf\Internal\Message
      */
     public function getResponseStatus()
     {
-        return isset($this->response_status) ? $this->response_status : null;
+        return $this->response_status;
     }
 
     public function hasResponseStatus()

src/php/tests/interop/Grpc/Testing/StreamingOutputCallResponse.php

@@ -45,7 +45,7 @@ class StreamingOutputCallResponse extends \Google\Protobuf\Internal\Message
      */
     public function getPayload()
     {
-        return isset($this->payload) ? $this->payload : null;
+        return $this->payload;
     }
 
     public function hasPayload()

third_party/protobuf

@@ -1 +1 @@
-Subproject commit 436bd7880e458532901c58f4d9d1ea23fa7edd52
+Subproject commit 909a0f36a10075c4b4bc70fdee2c7e32dd612a72

third_party/protobuf.patch

@@ -5,7 +5,7 @@ index 97ac28028..8b7585d9d 100644
 @@ -31,3 +31,9 @@
  # Copyright 2007 Google Inc. All Rights Reserved.
 
- __version__ = '3.15.8'
+ __version__ = '3.17.3'
 +
 +if __name__ != '__main__':
 +  try:

third_party/upb/bazel/workspace_deps.bzl

@@ -14,11 +14,11 @@ def upb_deps():
     maybe(
         http_archive,
         name = "com_google_protobuf",
-        sha256 = "b10bf4e2d1a7586f54e64a5d9e7837e5188fc75ae69e36f215eb01def4f9721b",
-        strip_prefix = "protobuf-3.15.3",
+        sha256 = "cf63d46ef743f4c30b0e36a562caf83cabed3f10e6ca49eb476913c4655394d5",
+        strip_prefix = "protobuf-3.17.3",
         urls = [
-            "https://mirror.bazel.build/github.com/protocolbuffers/protobuf/archive/v3.15.3.tar.gz",
-            "https://github.com/protocolbuffers/protobuf/archive/v3.15.3.tar.gz",
+            "https://mirror.bazel.build/github.com/protocolbuffers/protobuf/archive/v3.17.3.tar.gz",
+            "https://github.com/protocolbuffers/protobuf/archive/v3.17.3.tar.gz",
         ],
     )
 

tools/distrib/python/grpc_version.py

@@ -15,4 +15,4 @@
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/tools/distrib/python/grpcio_tools/grpc_version.py.template`!!!
 
 VERSION = '1.41.0.dev0'
-PROTOBUF_VERSION = '3.15.8'
+PROTOBUF_VERSION = '3.17.3'

tools/distrib/python/grpcio_tools/grpc_version.py

@@ -15,4 +15,4 @@
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/tools/distrib/python/grpcio_tools/grpc_version.py.template`!!!
 
 VERSION = '1.41.0.dev0'
-PROTOBUF_VERSION = '3.15.8'
+PROTOBUF_VERSION = '3.17.3'

tools/run_tests/sanity/check_submodules.sh

@@ -37,7 +37,7 @@ third_party/googletest c9ccac7cb7345901884aabf5d1a786cfa6e2f397
 third_party/libuv 15ae750151ac9341e5945eb38f8982d59fb99201
 third_party/opencensus-proto 4aa53e15cbf1a47bc9087e6cfdca214c1eea4e89
 third_party/opentelemetry 60fa8754d890b5c55949a8c68dcfd7ab5c2395df
-third_party/protobuf 436bd7880e458532901c58f4d9d1ea23fa7edd52
+third_party/protobuf 909a0f36a10075c4b4bc70fdee2c7e32dd612a72
 third_party/protoc-gen-validate 59da36e59fef2267fc2b1849a05159e3ecdf24f3
 third_party/re2 aecba11114cf1fac5497aeb844b6966106de3eb6
 third_party/udpa 6414d713912e988471d192940b62bf552b11793a