| # Copyright 2012, Google Inc. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| import struct |
| |
| from mod_pywebsocket import common |
| from mod_pywebsocket import stream |
| |
| |
| def web_socket_do_extra_handshake(request): |
| pass |
| |
| |
| def web_socket_transfer_data(request): |
| while True: |
| line = request.ws_stream.receive_message() |
| if line is None: |
| return |
| code, reason = line.split(' ', 1) |
| if code is None or reason is None: |
| return |
| request.ws_stream.close_connection(int(code), reason) |
| # close_connection() initiates closing handshake. It validates code |
| # and reason. If you want to send a broken close frame for a test, |
| # following code will be useful. |
| # > data = struct.pack('!H', int(code)) + reason.encode('UTF-8') |
| # > request.connection.write(stream.create_close_frame(data)) |
| # > # Suppress to re-respond client responding close frame. |
| # > raise Exception("customized server initiated closing handshake") |
| |
| |
| def web_socket_passive_closing_handshake(request): |
| # Simply echo a close status code |
| code, reason = request.ws_close_code, request.ws_close_reason |
| |
| # pywebsocket sets pseudo code for receiving an empty body close frame. |
| if code == common.STATUS_NO_STATUS_RECEIVED: |
| code = None |
| reason = '' |
| return code, reason |
| |
| |
| # vi:sts=4 sw=4 et |