Merge pull request #2873 from jtattermusch/expose_version_string

expose C core version string to C#

1 files changed, 12 insertions, 0 deletions

diff --git a/src/csharp/Grpc.Core/GrpcEnvironment.cs b/src/csharp/Grpc.Core/GrpcEnvironment.cs
index 034a66be3c..1bb83c9962 100644
--- a/src/csharp/Grpc.Core/GrpcEnvironment.cs
+++ b/src/csharp/Grpc.Core/GrpcEnvironment.cs
@@ -53,6 +53,9 @@ namespace Grpc.Core
         [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 @@ namespace Grpc.Core
         }
 
         /// <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()