All the code

Gameboard.ShogiUI.Sockets/Extensions/WebSocketExtensions.cs

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+using System;
+using System.Net.WebSockets;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace AspShogiSockets.Extensions
+{
+  public static class WebSocketExtensions
+  {
+    public static async Task SendTextAsync(this WebSocket self, string message)
+    {
+      await self.SendAsync(Encoding.UTF8.GetBytes(message), WebSocketMessageType.Text, true, CancellationToken.None);
+    }
+
+    public static async Task<string> ReceiveTextAsync(this WebSocket self)
+    {
+      var buffer = new ArraySegment<byte>(new byte[2048]);
+      var receive = await self.ReceiveAsync(buffer, CancellationToken.None);
+      return Encoding.UTF8.GetString(buffer.Slice(0, receive.Count));
+      // TODO: Make this robust to multi-frame messages.
+    }
+  }
+}