Websocket Onmessage Not Firing

I'm trying to implement my own websocket server and am running into a bit of trouble with the onmessage function in the JavaScript. It just won't fire! I put an alert into it to

Solution 1:

This is the same answer as for your other question: Compressed bit must be 0 when sending a message to websocket client

You're problem is that you are using the bytes function in python 2.X but expecting it to work the way it does in python 3.X

python2.6.6:

>>> bytes([129, 19])
'[129, 19]'

python 3:

>>> bytes([129, 19])
b'\x81\x13'

By replacing the send with the following in your server code it works for me in python2.X:

client_socket.send( "".join( [chr(c) for c in formatted_bytes] )

A couple of other notes:

• The code you linked to is adding 1 to the message length which is incorrect.

• You should really have the handshake code separate from the normal message parsing code. If somebody happened to send a message which contained "Sec-WebSocket-Key: " you would end up corrupting the stream by sending a raw handshake back again.