# Copyright (C) Research In Motion Limited 2011. All rights reserved.
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from mod_pywebsocket import handshake
from mod_pywebsocket.handshake.hybi import compute_accept


def web_socket_do_extra_handshake(request):
    # This will cause the handshake to fail because it pushes the length of the
    # status line past 1024 characters
    msg = '.' * 1024
    msg += 'HTTP/1.1 101 Switching Protocols\r\n'
    msg += 'Upgrade: websocket\r\n'
    msg += 'Connection: Upgrade\r\n'
    msg += 'Sec-WebSocket-Accept: %s\r\n' % compute_accept(request.headers_in['Sec-WebSocket-Key'])[0]
    msg += '\r\n'
    request.connection.write(msg)
    raise handshake.AbortedByUserException('abort the connection') # Prevents pywebsocket from sending its own handshake message.


def web_socket_transfer_data(request):
    pass