Базово работает

gRPC на отдельном порту

src/ApiClient/Grpc/GrpcSmsClient.cs

@@ -15,7 +15,19 @@ public sealed class GrpcSmsClient : ISmsClient, IDisposable
 
     public GrpcSmsClient(GrpcSmsClientOptions options)
     {
-        _channel = GrpcChannel.ForAddress(options.Address);
+        var address = options.Address;
+        var channelOptions = new GrpcChannelOptions();
+
+        if (address.StartsWith("http://", StringComparison.OrdinalIgnoreCase))
+        {
+            AppContext.SetSwitch("System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport", true);
+            channelOptions.HttpHandler = new SocketsHttpHandler
+            {
+                EnableMultipleHttp2Connections = true,
+            };
+        }
+
+        _channel = GrpcChannel.ForAddress(address, channelOptions);
         _client = new SmsTestService.SmsTestServiceClient(_channel);
     }
 
@@ -58,14 +70,12 @@ public sealed class GrpcSmsClient : ISmsClient, IDisposable
         _channel.Dispose();
     }
 
-    private static Dish ToDish(MenuItem item) => new()
-    {
-        Id = item.Id,
-        Article = item.Article,
-        Name = item.Name,
-        Price = (decimal)item.Price,
-        IsWeighted = item.IsWeighted,
-        FullPath = item.FullPath,
-        Barcodes = item.Barcodes.ToList(),
-    };
+    private static Dish ToDish(MenuItem item) => new(
+        item.Id,
+        item.Article,
+        item.Name,
+        (decimal)item.Price,
+        item.IsWeighted,
+        item.FullPath,
+        item.Barcodes.ToList());
 }