Handles: [THRIFT-5830: Using THttpTransport using interleaved asynchronous calls may throw exception](https://issues.apache.org/jira/browse/THRIFT-5830)

feat: Implement per-call transport support in THttpTransport

- Added ITPerCallTransportProvider interface to define per-call transport creation.
- Enhanced TBaseClient to support per-call transport with separate protocols.
- Introduced THttpPerCallTransport for handling HTTP requests on a per-call basis.
- Updated THttpTransport to manage lifecycle and creation of per-call transports.
- Improved error handling and resource management in transport classes.

Co-authored-by: Claude Sonnet 5
Co-authored-by: GPT 5.6 Luna
Co-authored-by: GitHub Copilot

Author: v-birschick-msft

compiler/cpp/src/thrift/generate/t_netstd_generator.cc

@@ -2439,6 +2439,40 @@ void t_netstd_generator::generate_service_client(ostream& out, t_service* tservi
         << indent() << "public Client(TProtocol inputProtocol, TProtocol outputProtocol) : base(inputProtocol, outputProtocol)" << '\n'
         << indent() << "{" << '\n'
         << indent() << "}" << '\n'
+        << '\n'
+        << indent() << "/// <summary>" << '\n'
+        << indent() << "/// Initializes a client that uses the protocol factory to create shared protocols and, when supported, per-call protocols." << '\n'
+        << indent() << "/// </summary>" << '\n'
+        << indent() << "/// <param name=\"transport\">The shared transport. The client owns protocols created for this transport.</param>" << '\n'
+        << indent() << "/// <param name=\"protocolFactory\">The factory used to create input and output protocols.</param>" << '\n'
+        << indent() << "public Client(TTransport transport, TProtocolFactory protocolFactory) : this(transport, protocolFactory, protocolFactory)" << '\n'
+        << indent() << "{" << '\n'
+        << indent() << "}" << '\n'
+        << '\n'
+        << indent() << "/// <summary>" << '\n'
+        << indent() << "/// Initializes a client that uses separate factories to create shared protocols and, when supported, per-call protocols." << '\n'
+        << indent() << "/// </summary>" << '\n'
+        << indent() << "/// <param name=\"transport\">The shared transport. The client owns protocols created for this transport.</param>" << '\n'
+        << indent() << "/// <param name=\"inputProtocolFactory\">The factory used to create input protocols.</param>" << '\n'
+        << indent() << "/// <param name=\"outputProtocolFactory\">The factory used to create output protocols.</param>" << '\n'
+        << indent() << "/// <remarks>When the transport supports per-call transports, the factories create new protocols for each call.</remarks>" << '\n'
+        << indent() << "public Client(TTransport transport, TProtocolFactory inputProtocolFactory, TProtocolFactory outputProtocolFactory)" << '\n'
+        << indent() << "    : base(transport, inputProtocolFactory, outputProtocolFactory)" << '\n'
+        << indent() << "{" << '\n'
+        << indent() << "}" << '\n'
+        << '\n'
+        << indent() << "/// <summary>" << '\n'
+        << indent() << "/// Initializes a client with shared protocols and factories for per-call protocols when supported." << '\n'
+        << indent() << "/// </summary>" << '\n'
+        << indent() << "/// <param name=\"inputProtocol\">The shared input protocol owned by the client.</param>" << '\n'
+        << indent() << "/// <param name=\"outputProtocol\">The shared output protocol owned by the client.</param>" << '\n'
+        << indent() << "/// <param name=\"transport\">The shared transport used to provide per-call transports when supported.</param>" << '\n'
+        << indent() << "/// <param name=\"inputProtocolFactory\">The factory used to create per-call input protocols.</param>" << '\n'
+        << indent() << "/// <param name=\"outputProtocolFactory\">The factory used to create per-call output protocols.</param>" << '\n'
+        << indent() << "public Client(TProtocol inputProtocol, TProtocol outputProtocol, TTransport transport, TProtocolFactory inputProtocolFactory, TProtocolFactory outputProtocolFactory)" << '\n'
+        << indent() << "    : base(inputProtocol, outputProtocol, transport, inputProtocolFactory, outputProtocolFactory)" << '\n'
+        << indent() << "{" << '\n'
+        << indent() << "}" << '\n'
         << '\n';
 
     vector<t_function*> functions = tservice->get_functions();
@@ -2454,6 +2488,13 @@ void t_netstd_generator::generate_service_client(ostream& out, t_service* tservi
         out << indent() << "public async " << function_signature_async(*functions_iterator, "") << '\n'
             << indent() << "{" << '\n';
         indent_up();
+        out << indent()
+            << (((!(*functions_iterator)->is_oneway()) && !(*functions_iterator)->get_returntype()->is_void())
+                    ? "return await "
+                    : "await ")
+            << "ExecutePerCallAsync(async () =>" << '\n'
+            << indent() << "{" << '\n';
+        indent_up();
         out << indent() << "await send_" << function_name << "(";
         string call_args = argument_list((*functions_iterator)->get_arglist(),false);
         if(! call_args.empty()) {
@@ -2465,6 +2506,8 @@ void t_netstd_generator::generate_service_client(ostream& out, t_service* tservi
                             << "await recv_" << function_name << "(" << CANCELLATION_TOKEN_NAME << ");" << '\n';
         }
         indent_down();
+        out << indent() << "}, " << CANCELLATION_TOKEN_NAME << ");" << '\n';
+        indent_down();
         out << indent() << "}" << '\n' << '\n';
 
         // async send