Merge pull request #14286 from dgquintas/fix_compresion_alg_accessors

Fix compression algorithm accessors

include/grpc++/impl/codegen/client_context.h

@@ -289,7 +289,9 @@ class ClientContext {
     creds_ = creds;
   }
 
-  /// Return the compression algorithm to be used by the client call.
+  /// Return the compression algorithm the client call will request be used.
+  /// Note that the gRPC runtime may decide to ignore this request, for example,
+  /// due to resource constraints.
   grpc_compression_algorithm compression_algorithm() const {
     return compression_algorithm_;
   }

include/grpc++/impl/codegen/server_context.h

@@ -185,7 +185,10 @@ class ServerContext {
   /// \a set_compression_level.
   bool compression_level_set() const { return compression_level_set_; }
 
-  /// Return the compression algorithm to be used by the server call.
+  /// Return the compression algorithm the server call will request be used.
+  /// Note that the gRPC runtime may decide to ignore this request, for example,
+  /// due to resource constraints, or if the server is aware the client doesn't
+  /// support the requested algorithm.
   grpc_compression_algorithm compression_algorithm() const {
     return compression_algorithm_;
   }

src/cpp/client/client_context.cc

@@ -96,6 +96,7 @@ void ClientContext::set_call(grpc_call* call,
 
 void ClientContext::set_compression_algorithm(
     grpc_compression_algorithm algorithm) {
+  compression_algorithm_ = algorithm;
   const char* algorithm_name = nullptr;
   if (!grpc_compression_algorithm_name(algorithm, &algorithm_name)) {
     gpr_log(GPR_ERROR, "Name for compression algorithm '%d' unknown.",

src/cpp/server/server_context.cc

@@ -190,6 +190,7 @@ bool ServerContext::IsCancelled() const {
 
 void ServerContext::set_compression_algorithm(
     grpc_compression_algorithm algorithm) {
+  compression_algorithm_ = algorithm;
   const char* algorithm_name = nullptr;
   if (!grpc_compression_algorithm_name(algorithm, &algorithm_name)) {
     gpr_log(GPR_ERROR, "Name for compression algorithm '%d' unknown.",