From bdb1b4863bf0d03fb08f240677a7aa3726bb3f1c Mon Sep 17 00:00:00 2001
From: Jan Tattermusch <jtattermusch@google.com>
Date: Wed, 6 May 2015 14:46:25 -0700
Subject: add a generic constraint for TRequest and TResponse to require a
 class

---
 src/csharp/Grpc.Core/Internal/ServerCalls.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/csharp/Grpc.Core/Internal/ServerCalls.cs')

diff --git a/src/csharp/Grpc.Core/Internal/ServerCalls.cs b/src/csharp/Grpc.Core/Internal/ServerCalls.cs
index 5c6b335c7f..81279678b9 100644
--- a/src/csharp/Grpc.Core/Internal/ServerCalls.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCalls.cs
@@ -41,21 +41,29 @@ namespace Grpc.Core.Internal
     internal static class ServerCalls
     {
         public static IServerCallHandler UnaryCall<TRequest, TResponse>(Method<TRequest, TResponse> method, UnaryServerMethod<TRequest, TResponse> handler)
+            where TRequest : class
+            where TResponse : class
         {
             return new UnaryServerCallHandler<TRequest, TResponse>(method, handler);
         }
 
         public static IServerCallHandler ClientStreamingCall<TRequest, TResponse>(Method<TRequest, TResponse> method, ClientStreamingServerMethod<TRequest, TResponse> handler)
+            where TRequest : class
+            where TResponse : class
         {
             return new ClientStreamingServerCallHandler<TRequest, TResponse>(method, handler);
         }
 
         public static IServerCallHandler ServerStreamingCall<TRequest, TResponse>(Method<TRequest, TResponse> method, ServerStreamingServerMethod<TRequest, TResponse> handler)
+            where TRequest : class
+            where TResponse : class
         {
             return new ServerStreamingServerCallHandler<TRequest, TResponse>(method, handler);
         }
 
         public static IServerCallHandler DuplexStreamingCall<TRequest, TResponse>(Method<TRequest, TResponse> method, DuplexStreamingServerMethod<TRequest, TResponse> handler)
+            where TRequest : class
+            where TResponse : class
         {
             return new DuplexStreamingServerCallHandler<TRequest, TResponse>(method, handler);
         }
-- 
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