Merge pull request #2645 from jtattermusch/csharp_go_beta_go

C# beta features and cleanup

30 files changed, 551 insertions, 206 deletions

diff --git a/src/csharp/Grpc.Auth/GoogleCredential.cs b/src/csharp/Grpc.Auth/GoogleCredential.cs
index 7edf19ed67..9936cf583c 100644
--- a/src/csharp/Grpc.Auth/GoogleCredential.cs
+++ b/src/csharp/Grpc.Auth/GoogleCredential.cs
@@ -89,17 +89,15 @@ namespace Grpc.Auth
                 return new GoogleCredential(new ComputeCredential(new ComputeCredential.Initializer()));
             }
 
-            JObject o1 = JObject.Parse(File.ReadAllText(credsPath));
-            string clientEmail = o1.GetValue(ClientEmailFieldName).Value<string>();
-            string privateKeyString = o1.GetValue(PrivateKeyFieldName).Value<string>();
-            var privateKey = ParsePrivateKeyFromString(privateKeyString);
+            JObject jsonCredentialParameters = JObject.Parse(File.ReadAllText(credsPath));
+            string clientEmail = jsonCredentialParameters.GetValue(ClientEmailFieldName).Value<string>();
+            string privateKeyString = jsonCredentialParameters.GetValue(PrivateKeyFieldName).Value<string>();
 
             var serviceCredential = new ServiceAccountCredential(
                 new ServiceAccountCredential.Initializer(clientEmail)
                 {
                     Scopes = scopes,
-                    Key = privateKey
-                });
+                }.FromPrivateKey(privateKeyString));
             return new GoogleCredential(serviceCredential);
         }
 
@@ -123,16 +121,5 @@ namespace Grpc.Auth
                 return credential;
             }
         }
-
-        private RSACryptoServiceProvider ParsePrivateKeyFromString(string base64PrivateKey)
-        {
-            // TODO(jtattermusch): temporary code to create RSACryptoServiceProvider.
-            base64PrivateKey = base64PrivateKey.Replace("-----BEGIN PRIVATE KEY-----", "").Replace("\n", "").Replace("-----END PRIVATE KEY-----", "");
-            RsaPrivateCrtKeyParameters key = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(base64PrivateKey));
-            RSAParameters rsaParameters = DotNetUtilities.ToRSAParameters(key);
-            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
-            rsa.ImportParameters(rsaParameters);
-            return rsa;
-        }
     }
 }
diff --git a/src/csharp/Grpc.Auth/Grpc.Auth.csproj b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
index fdec2e7bd7..afb8204c07 100644
--- a/src/csharp/Grpc.Auth/Grpc.Auth.csproj
+++ b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
@@ -11,6 +11,7 @@
     <AssemblyName>Grpc.Auth</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <DocumentationFile>bin\$(Configuration)\Grpc.Auth.Xml</DocumentationFile>
+    <NuGetPackageImportStamp>9b408026</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -34,14 +35,17 @@
     <Reference Include="BouncyCastle.Crypto">
       <HintPath>..\packages\BouncyCastle.1.7.0\lib\Net40-Client\BouncyCastle.Crypto.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Auth">
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.dll</HintPath>
+    <Reference Include="Google.Apis.Auth, Version=1.9.2.27817, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Auth.PlatformServices">
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
+    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.2.27820, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Core">
-      <HintPath>..\packages\Google.Apis.Core.1.9.1\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
+    <Reference Include="Google.Apis.Core, Version=1.9.2.27816, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Core.1.9.2\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.Threading.Tasks">
       <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
@@ -52,18 +56,20 @@
     <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop">
       <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Newtonsoft.Json.6.0.6\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http" />
-    <Reference Include="System.Net.Http.Extensions">
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Extensions.dll</HintPath>
+    <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Extensions.dll</HintPath>
     </Reference>
-    <Reference Include="System.Net.Http.Primitives">
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Primitives.dll</HintPath>
+    <Reference Include="System.Net.Http.Primitives, Version=4.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Primitives.dll</HintPath>
     </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
   </ItemGroup>
@@ -87,9 +93,11 @@
     <None Include="Grpc.Auth.nuspec" />
     <None Include="packages.config" />
   </ItemGroup>
-  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
-  <Target Name="EnsureBclBuildImported" BeforeTargets="BeforeBuild" Condition="'$(BclBuildImported)' == ''">
-    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=317567." HelpKeyword="BCLBUILD2001" />
-    <Error Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="The build restored NuGet packages. Build the project again to include these packages in the build. For more information, see http://go.microsoft.com/fwlink/?LinkID=317568." HelpKeyword="BCLBUILD2002" />
+  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/src/csharp/Grpc.Auth/Grpc.Auth.nuspec b/src/csharp/Grpc.Auth/Grpc.Auth.nuspec
index 1262bdbdab..eeaa49aa92 100644
--- a/src/csharp/Grpc.Auth/Grpc.Auth.nuspec
+++ b/src/csharp/Grpc.Auth/Grpc.Auth.nuspec
@@ -15,8 +15,7 @@
     <copyright>Copyright 2015, Google Inc.</copyright>
     <tags>gRPC RPC Protocol HTTP/2 Auth OAuth2</tags>
 	<dependencies>
-	  <dependency id="BouncyCastle" version="1.7.0" />
-	  <dependency id="Google.Apis.Auth" version="1.9.1" />
+	  <dependency id="Google.Apis.Auth" version="1.9.2" />
 	  <dependency id="Grpc.Core" version="$version$" />
     </dependencies>
   </metadata>
diff --git a/src/csharp/Grpc.Auth/app.config b/src/csharp/Grpc.Auth/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.Auth/app.config
+++ b/src/csharp/Grpc.Auth/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.Auth/packages.config b/src/csharp/Grpc.Auth/packages.config
index 7d348872ba..29be953bf3 100644
--- a/src/csharp/Grpc.Auth/packages.config
+++ b/src/csharp/Grpc.Auth/packages.config
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="BouncyCastle" version="1.7.0" targetFramework="net45" />
-  <package id="Google.Apis.Auth" version="1.9.1" targetFramework="net45" />
-  <package id="Google.Apis.Core" version="1.9.1" targetFramework="net45" />
-  <package id="Microsoft.Bcl" version="1.1.9" targetFramework="net45" />
+  <package id="Google.Apis.Auth" version="1.9.2" targetFramework="net45" />
+  <package id="Google.Apis.Core" version="1.9.2" targetFramework="net45" />
+  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
-  <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
-  <package id="Microsoft.Net.Http" version="2.2.28" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.6" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
+  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.Core.Tests/ClientServerTest.cs b/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
index 8ba2c8a9a2..2536c00345 100644
--- a/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
+++ b/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
@@ -45,7 +45,7 @@ namespace Grpc.Core.Tests
 {
     public class ClientServerTest
     {
-        const string Host = "localhost";
+        const string Host = "127.0.0.1";
         const string ServiceName = "/tests.Test";
 
         static readonly Method<string, string> EchoMethod = new Method<string, string>(
@@ -277,6 +277,14 @@ namespace Grpc.Core.Tests
             Assert.IsTrue(userAgent.StartsWith("grpc-csharp/"));
         }
 
+        [Test]
+        public void PeerInfoPresent()
+        {
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            string peer = Calls.BlockingUnaryCall(internalCall, "RETURN-PEER", CancellationToken.None);
+            Assert.IsTrue(peer.Contains(Host));
+        }
+
         private static async Task<string> EchoHandler(string request, ServerCallContext context)
         {
             foreach (Metadata.Entry metadataEntry in context.RequestHeaders)
@@ -292,6 +300,11 @@ namespace Grpc.Core.Tests
                 return context.RequestHeaders.Where(entry => entry.Key == "user-agent").Single().Value;
             }
 
+            if (request == "RETURN-PEER")
+            {
+                return context.Peer;
+            }
+
             if (request == "THROW")
             {
                 throw new Exception("This was thrown on purpose by a test");
diff --git a/src/csharp/Grpc.Core/Credentials.cs b/src/csharp/Grpc.Core/Credentials.cs
index e64c1e3dc1..d2dbaaf52f 100644
--- a/src/csharp/Grpc.Core/Credentials.cs
+++ b/src/csharp/Grpc.Core/Credentials.cs
@@ -53,27 +53,63 @@ namespace Grpc.Core
     /// </summary>
     public class SslCredentials : Credentials
     {
-        string pemRootCerts;
+        readonly string rootCertificates;
+        readonly KeyCertificatePair keyCertificatePair;
 
-        public SslCredentials(string pemRootCerts)
+        /// <summary>
+        /// Creates client-side SSL credentials loaded from
+        /// disk file pointed to by the GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment variable.
+        /// If that fails, gets the roots certificates from a well known place on disk.
+        /// </summary>
+        public SslCredentials() : this(null, null)
         {
-            this.pemRootCerts = pemRootCerts;
+        }
+
+        /// <summary>
+        /// Creates client-side SSL credentials from
+        /// a string containing PEM encoded root certificates.
+        /// </summary>
+        public SslCredentials(string rootCertificates) : this(rootCertificates, null)
+        {
+        }
+            
+        /// <summary>
+        /// Creates client-side SSL credentials.
+        /// </summary>
+        /// <param name="rootCertificates">string containing PEM encoded server root certificates.</param>
+        /// <param name="keyCertificatePair">a key certificate pair.</param>
+        public SslCredentials(string rootCertificates, KeyCertificatePair keyCertificatePair)
+        {
+            this.rootCertificates = rootCertificates;
+            this.keyCertificatePair = keyCertificatePair;
         }
 
         /// <summary>
         /// PEM encoding of the server root certificates.
         /// </summary>
-        public string RootCerts
+        public string RootCertificates
+        {
+            get
+            {
+                return this.rootCertificates;
+            }
+        }
+
+        /// <summary>
+        /// Client side key and certificate pair.
+        /// If null, client will not use key and certificate pair.
+        /// </summary>
+        public KeyCertificatePair KeyCertificatePair
         {
             get
             {
-                return this.pemRootCerts;
+                return this.keyCertificatePair;
             }
         }
 
         internal override CredentialsSafeHandle ToNativeCredentials()
         {
-            return CredentialsSafeHandle.CreateSslCredentials(pemRootCerts);
+            return CredentialsSafeHandle.CreateSslCredentials(rootCertificates, keyCertificatePair);
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Grpc.Core.csproj b/src/csharp/Grpc.Core/Grpc.Core.csproj
index fd68b91851..2705c95a26 100644
--- a/src/csharp/Grpc.Core/Grpc.Core.csproj
+++ b/src/csharp/Grpc.Core/Grpc.Core.csproj
@@ -103,6 +103,8 @@
     <Compile Include="ChannelOptions.cs" />
     <Compile Include="AsyncUnaryCall.cs" />
     <Compile Include="VersionInfo.cs" />
+    <Compile Include="Internal\CStringSafeHandle.cs" />
+    <Compile Include="KeyCertificatePair.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Grpc.Core.nuspec" />
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs b/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
index 702f1ce9e7..513902ee36 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
@@ -131,6 +131,14 @@ namespace Grpc.Core.Internal
             }
         }
 
+        public string Peer
+        {
+            get
+            {
+                return call.GetPeer();
+            }
+        }
+
         protected override void OnReleaseResources()
         {
             environment.DebugStats.ActiveServerCalls.Decrement();
diff --git a/src/csharp/Grpc.Core/Internal/CStringSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CStringSafeHandle.cs
new file mode 100644
index 0000000000..92fbe8cf0f
--- /dev/null
+++ b/src/csharp/Grpc.Core/Internal/CStringSafeHandle.cs
@@ -0,0 +1,60 @@
+#region Copyright notice and license
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+using System;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+
+namespace Grpc.Core.Internal
+{
+    /// <summary>
+    /// Owned char* object.
+    /// </summary>
+    internal class CStringSafeHandle : SafeHandleZeroIsInvalid
+    {
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void gprsharp_free(IntPtr ptr);
+
+        private CStringSafeHandle()
+        {
+        }
+
+        public string GetValue()
+        {
+            return Marshal.PtrToStringAnsi(handle);
+        }
+
+        protected override bool ReleaseHandle()
+        {
+            gprsharp_free(handle);
+            return true;
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
index 04e35a5efd..714749b171 100644
--- a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
@@ -89,6 +89,9 @@ namespace Grpc.Core.Internal
             BatchContextSafeHandle ctx);
 
         [DllImport("grpc_csharp_ext.dll")]
+        static extern CStringSafeHandle grpcsharp_call_get_peer(CallSafeHandle call);
+
+        [DllImport("grpc_csharp_ext.dll")]
         static extern void grpcsharp_call_destroy(IntPtr call);
 
         private CallSafeHandle()
@@ -180,6 +183,14 @@ namespace Grpc.Core.Internal
             grpcsharp_call_cancel_with_status(this, status.StatusCode, status.Detail).CheckOk();
         }
 
+        public string GetPeer()
+        {
+            using (var cstring = grpcsharp_call_get_peer(this))
+            {
+                return cstring.GetValue();
+            }
+        }
+
         protected override bool ReleaseHandle()
         {
             grpcsharp_call_destroy(handle);
diff --git a/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
index f361199068..52d4dfbbac 100644
--- a/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
@@ -50,9 +50,16 @@ namespace Grpc.Core.Internal
         {
         }
 
-        public static CredentialsSafeHandle CreateSslCredentials(string pemRootCerts)
+        public static CredentialsSafeHandle CreateSslCredentials(string pemRootCerts, KeyCertificatePair keyCertPair)
         {
-            return grpcsharp_ssl_credentials_create(pemRootCerts, null, null);
+            if (keyCertPair != null)
+            {
+                return grpcsharp_ssl_credentials_create(pemRootCerts, keyCertPair.CertificateChain, keyCertPair.PrivateKey);
+            }
+            else
+            {
+                return grpcsharp_ssl_credentials_create(pemRootCerts, null, null);
+            }
         }
 
         protected override bool ReleaseHandle()
diff --git a/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs b/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
index 93e1c0b294..84ea346ebc 100644
--- a/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
@@ -72,7 +72,7 @@ namespace Grpc.Core.Internal
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
 
             Status status;
-            var context = HandlerUtils.NewContext(newRpc, asyncCall.CancellationToken);
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
                 Preconditions.CheckArgument(await requestStream.MoveNext());
@@ -126,7 +126,7 @@ namespace Grpc.Core.Internal
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
 
             Status status;
-            var context = HandlerUtils.NewContext(newRpc, asyncCall.CancellationToken);
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
                 Preconditions.CheckArgument(await requestStream.MoveNext());
@@ -180,7 +180,7 @@ namespace Grpc.Core.Internal
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
 
             Status status;
-            var context = HandlerUtils.NewContext(newRpc, asyncCall.CancellationToken);
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
                 var result = await handler(requestStream, context);
@@ -238,7 +238,7 @@ namespace Grpc.Core.Internal
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
 
             Status status;
-            var context = HandlerUtils.NewContext(newRpc, asyncCall.CancellationToken);
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
                 await handler(requestStream, responseStream, context);
@@ -295,12 +295,12 @@ namespace Grpc.Core.Internal
             return new Status(StatusCode.Unknown, "Exception was thrown by handler.");
         }
 
-        public static ServerCallContext NewContext(ServerRpcNew newRpc, CancellationToken cancellationToken)
+        public static ServerCallContext NewContext(ServerRpcNew newRpc, string peer, CancellationToken cancellationToken)
         {
             DateTime realtimeDeadline = newRpc.Deadline.ToClockType(GPRClockType.Realtime).ToDateTime();
 
             return new ServerCallContext(
-                newRpc.Method, newRpc.Host, realtimeDeadline,
+                newRpc.Method, newRpc.Host, peer, realtimeDeadline,
                 newRpc.RequestMetadata, cancellationToken);
         }
     }
diff --git a/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs b/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
index 961180741a..59238a452c 100644
--- a/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
@@ -51,10 +51,10 @@ namespace Grpc.Core.Internal
         {
         }
 
-        public static ServerCredentialsSafeHandle CreateSslCredentials(string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray)
+        public static ServerCredentialsSafeHandle CreateSslCredentials(string pemRootCerts, string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray)
         {
             Preconditions.CheckArgument(keyCertPairCertChainArray.Length == keyCertPairPrivateKeyArray.Length);
-            return grpcsharp_ssl_server_credentials_create(null,
+            return grpcsharp_ssl_server_credentials_create(pemRootCerts,
                                                            keyCertPairCertChainArray, keyCertPairPrivateKeyArray,
                                                            new UIntPtr((ulong)keyCertPairCertChainArray.Length));
         }
diff --git a/src/csharp/Grpc.Core/KeyCertificatePair.cs b/src/csharp/Grpc.Core/KeyCertificatePair.cs
new file mode 100644
index 0000000000..7cea18618e
--- /dev/null
+++ b/src/csharp/Grpc.Core/KeyCertificatePair.cs
@@ -0,0 +1,84 @@
+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+
+namespace Grpc.Core
+{
+    /// <summary>
+    /// Key certificate pair (in PEM encoding).
+    /// </summary>
+    public sealed class KeyCertificatePair
+    {
+        readonly string certificateChain;
+        readonly string privateKey;
+
+        /// <summary>
+        /// Creates a new certificate chain - private key pair.
+        /// </summary>
+        /// <param name="certificateChain">PEM encoded certificate chain.</param>
+        /// <param name="privateKey">PEM encoded private key.</param>
+        public KeyCertificatePair(string certificateChain, string privateKey)
+        {
+            this.certificateChain = Preconditions.CheckNotNull(certificateChain);
+            this.privateKey = Preconditions.CheckNotNull(privateKey);
+        }
+
+        /// <summary>
+        /// PEM encoded certificate chain.
+        /// </summary>
+        public string CertificateChain
+        {
+            get
+            {
+                return certificateChain;
+            }
+        }
+
+        /// <summary>
+        /// PEM encoded private key.
+        /// </summary>
+        public string PrivateKey
+        {
+            get
+            {
+                return privateKey;
+            }
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/ServerCallContext.cs b/src/csharp/Grpc.Core/ServerCallContext.cs
index 17a2eefd07..0c48adaea5 100644
--- a/src/csharp/Grpc.Core/ServerCallContext.cs
+++ b/src/csharp/Grpc.Core/ServerCallContext.cs
@@ -47,6 +47,7 @@ namespace Grpc.Core
 
         private readonly string method;
         private readonly string host;
+        private readonly string peer;
         private readonly DateTime deadline;
         private readonly Metadata requestHeaders;
         private readonly CancellationToken cancellationToken;
@@ -54,10 +55,11 @@ namespace Grpc.Core
 
         private Status status = Status.DefaultSuccess;
 
-        public ServerCallContext(string method, string host, DateTime deadline, Metadata requestHeaders, CancellationToken cancellationToken)
+        public ServerCallContext(string method, string host, string peer, DateTime deadline, Metadata requestHeaders, CancellationToken cancellationToken)
         {
             this.method = method;
             this.host = host;
+            this.peer = peer;
             this.deadline = deadline;
             this.requestHeaders = requestHeaders;
             this.cancellationToken = cancellationToken;
@@ -81,6 +83,15 @@ namespace Grpc.Core
             }
         }
 
+        /// <summary> Address of the remote endpoint in URI format. </summary>
+        public string Peer
+        {
+            get
+            {
+                return this.peer;
+            }
+        }
+
         /// <summary> Deadline for this RPC. </summary>
         public DateTime Deadline
         {
diff --git a/src/csharp/Grpc.Core/ServerCredentials.cs b/src/csharp/Grpc.Core/ServerCredentials.cs
index ab7d0b4914..1b40ce8f6a 100644
--- a/src/csharp/Grpc.Core/ServerCredentials.cs
+++ b/src/csharp/Grpc.Core/ServerCredentials.cs
@@ -35,6 +35,7 @@ using System;
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using Grpc.Core.Internal;
+using Grpc.Core.Utils;
 
 namespace Grpc.Core
 {
@@ -51,59 +52,69 @@ namespace Grpc.Core
     }
 
     /// <summary>
-    /// Key certificate pair (in PEM encoding).
+    /// Server-side SSL credentials.
     /// </summary>
-    public class KeyCertificatePair
+    public class SslServerCredentials : ServerCredentials
     {
-        readonly string certChain;
-        readonly string privateKey;
+        readonly IList<KeyCertificatePair> keyCertificatePairs;
+        readonly string rootCertificates;
 
-        public KeyCertificatePair(string certChain, string privateKey)
+        /// <summary>
+        /// Creates server-side SSL credentials.
+        /// </summary>
+        /// <param name="rootCertificates">PEM encoded client root certificates used to authenticate client.</param>
+        /// <param name="keyCertificatePairs">Key-certificates to use.</param>
+        public SslServerCredentials(IEnumerable<KeyCertificatePair> keyCertificatePairs, string rootCertificates)
         {
-            this.certChain = certChain;
-            this.privateKey = privateKey;
+            this.keyCertificatePairs = new List<KeyCertificatePair>(keyCertificatePairs).AsReadOnly();
+            Preconditions.CheckArgument(this.keyCertificatePairs.Count > 0,
+                "At least one KeyCertificatePair needs to be provided");
+            this.rootCertificates = rootCertificates;
         }
 
-        public string CertChain
+        /// <summary>
+        /// Creates server-side SSL credentials.
+        /// This constructor should be use if you do not wish to autheticate client
+        /// using client root certificates.
+        /// </summary>
+        /// <param name="keyCertificatePairs">Key-certificates to use.</param>
+        public SslServerCredentials(IEnumerable<KeyCertificatePair> keyCertificatePairs) : this(keyCertificatePairs, null)
         {
-            get
-            {
-                return certChain;
-            }
         }
 
-        public string PrivateKey
+        /// <summary>
+        /// Key-certificate pairs.
+        /// </summary>
+        public IList<KeyCertificatePair> KeyCertificatePairs
         {
             get
             {
-                return privateKey;
+                return this.keyCertificatePairs;
             }
         }
-    }
 
-    /// <summary>
-    /// Server-side SSL credentials.
-    /// </summary>
-    public class SslServerCredentials : ServerCredentials
-    {
-        ImmutableList<KeyCertificatePair> keyCertPairs;
-
-        public SslServerCredentials(ImmutableList<KeyCertificatePair> keyCertPairs)
+        /// <summary>
+        /// PEM encoded client root certificates.
+        /// </summary>
+        public string RootCertificates
         {
-            this.keyCertPairs = keyCertPairs;
+            get
+            {
+                return this.rootCertificates;
+            }
         }
 
         internal override ServerCredentialsSafeHandle ToNativeCredentials()
         {
-            int count = keyCertPairs.Count;
+            int count = keyCertificatePairs.Count;
             string[] certChains = new string[count];
             string[] keys = new string[count];
             for (int i = 0; i < count; i++)
             {
-                certChains[i] = keyCertPairs[i].CertChain;
-                keys[i] = keyCertPairs[i].PrivateKey;
+                certChains[i] = keyCertificatePairs[i].CertificateChain;
+                keys[i] = keyCertificatePairs[i].PrivateKey;
             }
-            return ServerCredentialsSafeHandle.CreateSslCredentials(certChains, keys);
+            return ServerCredentialsSafeHandle.CreateSslCredentials(rootCertificates, certChains, keys);
         }
     }
 }
diff --git a/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj b/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
index 5d5401593d..85996a570c 100644
--- a/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
+++ b/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProductVersion>10.0.0</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
     <ProjectGuid>{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}</ProjectGuid>
@@ -11,7 +11,7 @@
     <AssemblyName>MathClient</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -20,16 +20,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj b/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
index 677d87da20..6c8856cc92 100644
--- a/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
+++ b/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProductVersion>10.0.0</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
     <ProjectGuid>{BF62FE08-373A-43D6-9D73-41CAA38B7011}</ProjectGuid>
@@ -11,7 +11,7 @@
     <AssemblyName>MathServer</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -20,16 +20,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
index dc1d0a44c0..37d53d61e0 100644
--- a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{3D166931-BA2D-416E-95A3-D36E8F6E90B9}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>Grpc.IntegrationTesting.Client</RootNamespace>
@@ -10,7 +10,7 @@
     <StartupObject>Grpc.IntegrationTesting.Client.Program</StartupObject>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -19,16 +19,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/src/csharp/Grpc.IntegrationTesting.Client/app.config b/src/csharp/Grpc.IntegrationTesting.Client/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.IntegrationTesting.Client/app.config
+++ b/src/csharp/Grpc.IntegrationTesting.Client/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
index f03c8f3ce3..0f3b9eb510 100644
--- a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{A654F3B8-E859-4E6A-B30D-227527DBEF0D}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>Grpc.IntegrationTesting.Server</RootNamespace>
@@ -10,7 +10,7 @@
     <StartupObject>Grpc.IntegrationTesting.Server.Program</StartupObject>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -19,16 +19,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/src/csharp/Grpc.IntegrationTesting.Server/app.config b/src/csharp/Grpc.IntegrationTesting.Server/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.IntegrationTesting.Server/app.config
+++ b/src/csharp/Grpc.IntegrationTesting.Server/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
index d3c69ab9eb..db2e304d37 100644
--- a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
+++ b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
@@ -2,16 +2,15 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
-    <ProductVersion>8.0.30703</ProductVersion>
-    <SchemaVersion>2.0</SchemaVersion>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{C61154BA-DD4A-4838-8420-0162A28925E0}</ProjectGuid>
     <OutputType>Library</OutputType>
     <RootNamespace>Grpc.IntegrationTesting</RootNamespace>
     <AssemblyName>Grpc.IntegrationTesting</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <NuGetPackageImportStamp>041c163e</NuGetPackageImportStamp>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -20,45 +19,36 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Apis.Auth, Version=1.9.1.12395, Culture=neutral, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.dll</HintPath>
-    </Reference>
-    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.1.12399, Culture=neutral, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
-    </Reference>
-    <Reference Include="Google.Apis.Core, Version=1.9.1.12394, Culture=neutral, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Apis.Core.1.9.1\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
+    <Reference Include="BouncyCastle.Crypto">
+      <HintPath>..\packages\BouncyCastle.1.7.0\lib\Net40-Client\BouncyCastle.Crypto.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="Google.Apis.Auth, Version=1.9.2.27817, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.2.27820, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="Google.Apis.Core, Version=1.9.2.27816, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
+      <HintPath>..\packages\Google.Apis.Core.1.9.2\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Newtonsoft.Json.6.0.6\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="nunit.framework">
       <HintPath>..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
@@ -67,24 +57,32 @@
     <Reference Include="Google.ProtocolBuffers">
       <HintPath>..\packages\Google.ProtocolBuffers.2.4.1.521\lib\net40\Google.ProtocolBuffers.dll</HintPath>
     </Reference>
-    <Reference Include="System.Collections.Immutable, Version=1.1.36.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Collections.Immutable.1.1.36\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-    </Reference>
     <Reference Include="System.Interactive.Async">
       <HintPath>..\packages\Ix-Async.1.2.3\lib\net45\System.Interactive.Async.dll</HintPath>
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http" />
-    <Reference Include="System.Net.Http.Extensions, Version=2.2.28.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Extensions.dll</HintPath>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Extensions.dll</HintPath>
     </Reference>
-    <Reference Include="System.Net.Http.Primitives, Version=4.2.28.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="System.Net.Http.Primitives, Version=4.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Primitives.dll</HintPath>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Primitives.dll</HintPath>
     </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
+    <Reference Include="Microsoft.Threading.Tasks">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Collections.Immutable">
+      <HintPath>..\packages\System.Collections.Immutable.1.1.36\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\Grpc.Core\Version.cs">
@@ -99,6 +97,7 @@
     <Compile Include="InteropClient.cs" />
     <Compile Include="TestCredentials.cs" />
     <Compile Include="TestGrpc.cs" />
+    <Compile Include="SslCredentialsTest.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
@@ -133,9 +132,11 @@
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
-  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
-  <Target Name="EnsureBclBuildImported" BeforeTargets="BeforeBuild" Condition="'$(BclBuildImported)' == ''">
-    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=317567." HelpKeyword="BCLBUILD2001" />
-    <Error Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="The build restored NuGet packages. Build the project again to include these packages in the build. For more information, see http://go.microsoft.com/fwlink/?LinkID=317568." HelpKeyword="BCLBUILD2002" />
+  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs b/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs
new file mode 100644
index 0000000000..b2397d4e23
--- /dev/null
+++ b/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs
@@ -0,0 +1,98 @@
+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using grpc.testing;
+using Grpc.Core;
+using Grpc.Core.Utils;
+using NUnit.Framework;
+
+namespace Grpc.IntegrationTesting
+{
+    /// <summary>
+    /// Test SSL credentials where server authenticates client 
+    /// and client authenticates the server.
+    /// </summary>
+    public class SslCredentialsTest
+    {
+        string host = "localhost";
+        Server server;
+        Channel channel;
+        TestService.ITestServiceClient client;
+
+        [TestFixtureSetUp]
+        public void Init()
+        {
+            var rootCert = File.ReadAllText(TestCredentials.ClientCertAuthorityPath);
+            var keyCertPair = new KeyCertificatePair(
+                File.ReadAllText(TestCredentials.ServerCertChainPath),
+                File.ReadAllText(TestCredentials.ServerPrivateKeyPath));
+
+            var serverCredentials = new SslServerCredentials(new [] { keyCertPair }, rootCert);
+            var clientCredentials = new SslCredentials(rootCert, keyCertPair);
+
+            server = new Server();
+            server.AddServiceDefinition(TestService.BindService(new TestServiceImpl()));
+            int port = server.AddListeningPort(host, Server.PickUnusedPort, serverCredentials);
+            server.Start();
+
+            var options = new List<ChannelOption>
+            {
+                new ChannelOption(ChannelOptions.SslTargetNameOverride, TestCredentials.DefaultHostOverride)
+            };
+
+            channel = new Channel(host, port, clientCredentials, options);
+            client = TestService.NewClient(channel);
+        }
+
+        [TestFixtureTearDown]
+        public void Cleanup()
+        {
+            channel.Dispose();
+            server.ShutdownAsync().Wait();
+            GrpcEnvironment.Shutdown();
+        }
+
+        [Test]
+        public void AuthenticatedClientAndServer()
+        {
+            var response = client.UnaryCall(SimpleRequest.CreateBuilder().SetResponseSize(10).Build());
+            Assert.AreEqual(10, response.Payload.Body.Length);
+        }
+
+    }
+}
diff --git a/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs b/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs
index 401c50b1ae..54d8587713 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs
@@ -78,7 +78,7 @@ namespace Grpc.IntegrationTesting
             var keyCertPair = new KeyCertificatePair(
                 File.ReadAllText(ServerCertChainPath),
                 File.ReadAllText(ServerPrivateKeyPath));
-            return new SslServerCredentials(ImmutableList.Create(keyCertPair));
+            return new SslServerCredentials(new[] { keyCertPair });
         }
     }
 }
diff --git a/src/csharp/Grpc.IntegrationTesting/app.config b/src/csharp/Grpc.IntegrationTesting/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.IntegrationTesting/app.config
+++ b/src/csharp/Grpc.IntegrationTesting/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.IntegrationTesting/packages.config b/src/csharp/Grpc.IntegrationTesting/packages.config
index c74ac75d79..746133a7a5 100644
--- a/src/csharp/Grpc.IntegrationTesting/packages.config
+++ b/src/csharp/Grpc.IntegrationTesting/packages.config
@@ -1,14 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Apis.Auth" version="1.9.1" targetFramework="net45" />
-  <package id="Google.Apis.Core" version="1.9.1" targetFramework="net45" />
+  <package id="BouncyCastle" version="1.7.0" targetFramework="net45" />
+  <package id="Google.Apis.Auth" version="1.9.2" targetFramework="net45" />
+  <package id="Google.Apis.Core" version="1.9.2" targetFramework="net45" />
   <package id="Google.ProtocolBuffers" version="2.4.1.521" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
-  <package id="Microsoft.Bcl" version="1.1.9" targetFramework="net45" />
+  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
-  <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
-  <package id="Microsoft.Net.Http" version="2.2.28" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.6" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
+  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
   <package id="NUnit" version="2.6.4" targetFramework="net45" />
   <package id="System.Collections.Immutable" version="1.1.36" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.sln b/src/csharp/Grpc.sln
index 705e4fb1c2..0cd8aaef6d 100644
--- a/src/csharp/Grpc.sln
+++ b/src/csharp/Grpc.sln
@@ -34,58 +34,58 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Grpc.HealthCheck.Tests", "G
 EndProject

 Global

 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

-		Debug|x86 = Debug|x86

-		Release|x86 = Release|x86

+		Debug|Any CPU = Debug|Any CPU

+		Release|Any CPU = Release|Any CPU

 	EndGlobalSection

 	GlobalSection(ProjectConfigurationPlatforms) = postSolution

-		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|x86.ActiveCfg = Debug|Any CPU

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-		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|x86.Build.0 = Release|Any CPU

-		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|x86.ActiveCfg = Debug|x86

-		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|x86.Build.0 = Debug|x86

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-		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|x86.ActiveCfg = Debug|x86

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-		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Release|x86.Build.0 = Release|x86

-		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Debug|x86.ActiveCfg = Debug|Any CPU

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-		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|x86.Build.0 = Debug|Any CPU

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-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|x86.ActiveCfg = Debug|x86

-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|x86.Build.0 = Debug|x86

-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|x86.ActiveCfg = Release|x86

-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|x86.Build.0 = Release|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|x86.ActiveCfg = Debug|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|x86.Build.0 = Debug|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|x86.ActiveCfg = Release|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|x86.Build.0 = Release|x86

-		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|x86.Build.0 = Debug|Any CPU

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-		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|x86.Build.0 = Release|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|x86.Build.0 = Debug|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|x86.ActiveCfg = Release|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|x86.Build.0 = Release|Any CPU

+		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|Any CPU.Build.0 = Debug|Any CPU

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+		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|Any CPU.Build.0 = Release|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Release|Any CPU.Build.0 = Release|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Release|Any CPU.Build.0 = Release|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Release|Any CPU.Build.0 = Release|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Release|Any CPU.Build.0 = Release|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Release|Any CPU.Build.0 = Release|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Release|Any CPU.Build.0 = Release|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Release|Any CPU.Build.0 = Release|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|Any CPU.Build.0 = Release|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|Any CPU.Build.0 = Release|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|Any CPU.Build.0 = Release|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|Any CPU.Build.0 = Release|Any CPU

 	EndGlobalSection

 	GlobalSection(NestedProjects) = preSolution

 	EndGlobalSection

diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index 7e30a84a62..756493358f 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -465,6 +465,14 @@ grpcsharp_call_cancel_with_status(grpc_call *call, grpc_status_code status,
   return grpc_call_cancel_with_status(call, status, description);
 }
 
+GPR_EXPORT char *GPR_CALLTYPE grpcsharp_call_get_peer(grpc_call *call) {
+  return grpc_call_get_peer(call);
+}
+
+GPR_EXPORT void GPR_CALLTYPE gprsharp_free(void *p) {
+  gpr_free(p);
+}
+
 GPR_EXPORT void GPR_CALLTYPE grpcsharp_call_destroy(grpc_call *call) {
   grpc_call_destroy(call);
 }