monoPosixHelper error when receiving message with "permessage-deflate"

[arjanwiegel]

Contrary to Chrome, Firefox sends its websocket-client messages with the "permessage-deflate" extension, which causes a "monoPosixHelper" helper error in Unity upon reception of the first message. This error closes the connection to the client.

client code: `` socket = new WebSocket("ws://192.168.20.223/get");

socket.onmessage=function(event){console.log("message:");console.log(event);}

socket.send("Hello World"); ``

[sta]

Hello there,

On which OS do you use Unity?

[arjanwiegel]

I use unity 5.3.4 x64 for Windows. I believe that is has to do with the mono frontend that's not 100% compatible with .NET. Simple things like compression are not available. We managed to work around this by de-activating the compression and recompiling the DLL.

[sta]

Simple things like compression are not available.

You are right. Unfortunately, it is not available at least with Unity for Windows.

FYI, you use this library as role of a server? If so, you can ignore extensions, with such as below:

yourServer.AddWebSocketService<YourBehavior> (
  "/YourServicePath",
  () =>
    new YourBehavior () {
      // To ignore the extensions requested from a client.
      IgnoreExtensions = true
    }
);

[arjanwiegel]

Nice! That defeats Hacking into the code nd recompiling crippled dll. 😃