commit b5ea2f89fd7efe0370f9b3820385b2edf397d3dc
author Jan Tattermusch <jtattermusch@users.noreply.github.com> Mon Aug 10 14:26:58 2015 -0700
committer Jan Tattermusch <jtattermusch@users.noreply.github.com> Mon Aug 10 14:26:58 2015 -0700
tree a93a73490e83a53c2133856712f5eacaba4d20fb
parent 5bdcfc60470a3e491f0be563eb0938d4a19fc072
parent 1338798897378d8d05ab2a4633f25bcd63cfdc87

Merge pull request #2873 from jtattermusch/expose_version_string

expose C core version string to C#

src/csharp/Grpc.Core.Tests/GrpcEnvironmentTest.cs

diff --git a/src/csharp/Grpc.Core.Tests/GrpcEnvironmentTest.cs b/src/csharp/Grpc.Core.Tests/GrpcEnvironmentTest.cs
index 9ae1277..4ed93c7 100644
--- a/src/csharp/Grpc.Core.Tests/GrpcEnvironmentTest.cs
+++ b/src/csharp/Grpc.Core.Tests/GrpcEnvironmentTest.cs
@@ -69,5 +69,13 @@
 
             Assert.IsFalse(object.ReferenceEquals(env1, env2));
         }
+
+        [Test]
+        public void GetCoreVersionString()
+        {
+            var coreVersion = GrpcEnvironment.GetCoreVersionString();
+            var parts = coreVersion.Split('.');
+            Assert.AreEqual(4, parts.Length);
+        }
     }
 }

src/csharp/Grpc.Core/GrpcEnvironment.cs

diff --git a/src/csharp/Grpc.Core/GrpcEnvironment.cs b/src/csharp/Grpc.Core/GrpcEnvironment.cs
index 034a66b..1bb83c9 100644
--- a/src/csharp/Grpc.Core/GrpcEnvironment.cs
+++ b/src/csharp/Grpc.Core/GrpcEnvironment.cs
@@ -53,6 +53,9 @@
         [DllImport("grpc_csharp_ext.dll")]
         static extern void grpcsharp_shutdown();
 
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern IntPtr grpcsharp_version_string();  // returns not-owned const char*
+
         static object staticLock = new object();
         static GrpcEnvironment instance;
 
@@ -164,6 +167,15 @@
         }
 
         /// <summary>
+        /// Gets version of gRPC C core.
+        /// </summary>
+        internal static string GetCoreVersionString()
+        {
+            var ptr = grpcsharp_version_string();  // the pointer is not owned
+            return Marshal.PtrToStringAnsi(ptr);
+        }
+
+        /// <summary>
         /// Shuts down this environment.
         /// </summary>
         private void Close()

src/csharp/ext/grpc_csharp_ext.c

diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index 133b2d8..9379ae0 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -876,6 +876,11 @@
 
 typedef void(GPR_CALLTYPE *test_callback_funcptr)(gpr_int32 success);
 
+/* Version info */
+GPR_EXPORT const char *GPR_CALLTYPE grpcsharp_version_string() {
+  return grpc_version_string();
+}
+
 /* For testing */
 GPR_EXPORT void GPR_CALLTYPE
 grpcsharp_test_callback(test_callback_funcptr callback) {