[Modify] Throw exception

8 years ago · a01c2354e1
parent 32ba638d4b
commit a01c2354e1
1 changed files with 6 additions and 2 deletions
--- a/websocket-sharp/Server/WebSocketBehavior.cs
+++ b/websocket-sharp/Server/WebSocketBehavior.cs
@ -696,8 +696,12 @@ namespace WebSocketSharp.Server
    /// </param>
    protected void SendAsync (Stream stream, int length, Action<bool> completed)
    {
-      if (_websocket != null)
-        _websocket.SendAsync (stream, length, completed);
+      if (_websocket == null) {
+        var msg = "The current state of the connection is not Open.";
+        throw new InvalidOperationException (msg);
+      }
+
+      _websocket.SendAsync (stream, length, completed);
    }

    #endregion