SignalR/SignalR — pull request #2455 by DogBitesMe (2013-08-22 15:14:38+00:00)
Title: Make buffer larger to send/receive larger message

Larger message can't be send over ClientWebSocket unless ClientWebSocket's buffer is large enough.
The buffer size must be set before using.

Here is a simple fix, or you can provide some options when creating WebSocketTransport. Thanks