1 files changed, 26 insertions, 56 deletions
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropServer.cs b/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
index 718278f30a..513f8722d6 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
@@ -37,6 +37,9 @@ using System.Diagnostics;
 using System.IO;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
+
+using CommandLine;
+using CommandLine.Text;
 using Grpc.Core;
 using Grpc.Core.Utils;
 using Grpc.Testing;
@@ -48,9 +51,24 @@ namespace Grpc.IntegrationTesting
     {
         private class ServerOptions
         {
-            public bool help;
-            public int? port = 8070;
-            public bool useTls;
+            [Option("port", DefaultValue = 8070)]
+            public int Port { get; set; }
+
+            [Option("use_tls")]
+            public bool UseTls { get; set; }
+
+            [HelpOption]
+            public string GetUsage()
+            {
+                var help = new HelpText
+                {
+                    Heading = "gRPC C# interop testing server",
+                    AddDashesToOption = true
+                };
+                help.AddPreOptionsLine("Usage:");
+                help.AddOptions(this);
+                return help;
+            }
         }
 
         ServerOptions options;
@@ -62,22 +80,9 @@ namespace Grpc.IntegrationTesting
 
         public static void Run(string[] args)
         {
-            Console.WriteLine("gRPC C# interop testing server");
-            ServerOptions options = ParseArguments(args);
-
-            if (!options.port.HasValue)
-            {
-                Console.WriteLine("Missing required argument.");
-                Console.WriteLine();
-                options.help = true;
-            }
-
-            if (options.help)
+            var options = new ServerOptions();
+            if (!Parser.Default.ParseArguments(args, options))
             {
-                Console.WriteLine("Usage:");
-                Console.WriteLine("  --port=PORT");
-                Console.WriteLine("  --use_tls=BOOLEAN");
-                Console.WriteLine();
                 Environment.Exit(1);
             }
 
@@ -93,54 +98,19 @@ namespace Grpc.IntegrationTesting
             };
 
             string host = "0.0.0.0";
-            int port = options.port.Value;
-            if (options.useTls)
+            int port = options.Port;
+            if (options.UseTls)
             {
                 server.Ports.Add(host, port, TestCredentials.CreateTestServerCredentials());
             }
             else
             {
-                server.Ports.Add(host, options.port.Value, ServerCredentials.Insecure);
+                server.Ports.Add(host, options.Port, ServerCredentials.Insecure);
             }
             Console.WriteLine("Running server on " + string.Format("{0}:{1}", host, port));
             server.Start();
 
             server.ShutdownTask.Wait();
         }
-
-        private static ServerOptions ParseArguments(string[] args)
-        {
-            var options = new ServerOptions();
-            foreach (string arg in args)
-            {
-                ParseArgument(arg, options);
-                if (options.help)
-                {
-                    break;
-                }
-            }
-            return options;
-        }
-
-        private static void ParseArgument(string arg, ServerOptions options)
-        {
-            Match match;
-            match = Regex.Match(arg, "--port=(.*)");
-            if (match.Success)
-            {
-                options.port = int.Parse(match.Groups[1].Value.Trim());
-                return;
-            }
-
-            match = Regex.Match(arg, "--use_tls=(.*)");
-            if (match.Success)
-            {
-                options.useTls = bool.Parse(match.Groups[1].Value.Trim());
-                return;
-            }
-
-            Console.WriteLine(string.Format("Unrecognized argument \"{0}\"", arg));
-            options.help = true;
-        }
     }
 }