http-tap downstream connection (#29420)

Additional Description:
Risk Level: Low
Testing: Ut/Integrated Test
Docs Changes:
Release Notes:
Platform Specific Features:

Signed-off-by: Felix Du <durd07@gmail.com>

Mirrored from https://github.com/envoyproxy/envoy @ 6092cdcc2f4cce51c7c6409b4452e52d0a185f42

envoy/data/tap/v3/common.proto

@@ -2,6 +2,8 @@ syntax = "proto3";
 
 package envoy.data.tap.v3;
 
+import "envoy/config/core/v3/address.proto";
+
 import "udpa/annotations/status.proto";
 import "udpa/annotations/versioning.proto";
 
@@ -36,3 +38,14 @@ message Body {
   // <envoy_v3_api_field_config.tap.v3.OutputConfig.max_buffered_tx_bytes>` settings.
   bool truncated = 3;
 }
+
+// Connection properties.
+message Connection {
+  option (udpa.annotations.versioning).previous_message_type = "envoy.data.tap.v2alpha.Connection";
+
+  // Local address.
+  config.core.v3.Address local_address = 1;
+
+  // Remote address.
+  config.core.v3.Address remote_address = 2;
+}

envoy/data/tap/v3/http.proto

@@ -46,6 +46,9 @@ message HttpBufferedTrace {
 
   // Response message.
   Message response = 2;
+
+  // downstream connection
+  Connection downstream_connection = 3;
 }
 
 // A streamed HTTP trace segment. Multiple segments make up a full trace.

envoy/data/tap/v3/transport.proto

@@ -2,7 +2,6 @@ syntax = "proto3";
 
 package envoy.data.tap.v3;
 
-import "envoy/config/core/v3/address.proto";
 import "envoy/data/tap/v3/common.proto";
 
 import "google/protobuf/timestamp.proto";
@@ -20,17 +19,6 @@ option (udpa.annotations.file_status).package_version_status = ACTIVE;
 // Trace format for the tap transport socket extension. This dumps plain text read/write
 // sequences on a socket.
 
-// Connection properties.
-message Connection {
-  option (udpa.annotations.versioning).previous_message_type = "envoy.data.tap.v2alpha.Connection";
-
-  // Local address.
-  config.core.v3.Address local_address = 2;
-
-  // Remote address.
-  config.core.v3.Address remote_address = 3;
-}
-
 // Event in a socket trace.
 message SocketEvent {
   option (udpa.annotations.versioning).previous_message_type = "envoy.data.tap.v2alpha.SocketEvent";

envoy/extensions/filters/http/tap/v3/tap.proto

@@ -31,4 +31,7 @@ message Tap {
   // Request headers time stamp is stored after receiving request headers.
   // Response headers time stamp is stored after receiving response headers.
   bool record_headers_received_time = 2;
+
+  // Indicates whether report downstream connection info
+  bool record_downstream_connection = 3;
 }