WebSocket header continuations test case.

net/data/websocket/header-continuation_wsh.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
-# The purpose of this test is to verify that the WebSocket handshake correctly
-# ignores trailing whitespace on response headers.
-# It is used by test case WebSocketEndToEndTest.TrailingWhitespace.
+# The purpose of this test is to verify that WebSocket supports header
+# continuations, as deprecated in RFC7230 section 3.2.4.
+# It is used by test case WebSocketEndToEndTest.HeaderContinuations.
 
 from mod_pywebsocket import handshake
 from mod_pywebsocket.handshake.hybi import compute_accept
 
 
 def web_socket_do_extra_handshake(request):
   accept = compute_accept(request.headers_in['Sec-WebSocket-Key'])[0]
   message = ('HTTP/1.1 101 Switching Protocols\r\n'
              'Upgrade: websocket\r\n'
              'Connection: Upgrade\r\n'
              'Sec-WebSocket-Accept: %s\r\n'
-             'Sec-WebSocket-Protocol: sip \r\n'
+             'Sec-WebSocket-Extensions: permessage-deflate;\r\n'
+             '  server_max_window_bits=10\r\n'
              '\r\n' % accept)
   request.connection.write(message)
   # Prevent pywebsocket from sending its own handshake message.
   raise handshake.AbortedByUserException('Close the connection')
 
 
 def web_socket_transfer_data(request):
   pass