[webkit-dev] Please kill old pywebsocket process if you see WebSocket test failures

[Yuta Kitamura]

Hi webkit-dev,

If the following two tests are failing, it's probably because an old
pywebsocket process is still alive and preventing the new one from starting:

    http/tests/websocket/tests/client-close.html
    http/tests/websocket/tests/server-close.html

You can observe the following traceback in the layout test output:

    Traceback (most recent call last):
      File "Tools/Scripts/new-run-webkit-websocketserver", line 108, in
<module>
        main()
      File "Tools/Scripts/new-run-webkit-websocketserver", line 103, in main
        pywebsocket.start()
      File
"/Volumes/Big/WebKit-BuildSlave/leopard-intel-release-tests/build/Tools/Scripts/webkitpy/layout_tests/port/websocket_server.py",
line 220, in start
        (self._server_name, self._port))
    webkitpy.layout_tests.port.websocket_server.PyWebSocketNotStarted:
Failed to start PyWebSocket server on port 8880.

If this happens, please kill the old pywebsocket process, or reboot the
machine.


*Dear WebKit buildbot administrators:*

A couple of buildbot slaves are affected by this issue (as far as I know).
Specifically:

- apple-macpro-4 (
http://build.webkit.org/builders/Leopard%20Intel%20Release%20%28Tests%29/builds/32745
)
- apple-xserve-7 (
http://build.webkit.org/builders/SnowLeopard%20Intel%20Release%20%28WebKit2%20Tests%29/builds/12121
)

Could you kill old pywebsocket processes in these bots? After killing them,
the above two tests should start to pass.


*Dear webkitpy hackers:*

run-webkit-websocketserver probably should check if there's any existing
WebSocket server running, and kill it before starting the new one.

However, as I don't know very much about how run-webkit-websocketserver
works, I don't know if this is feasible or not. Do you think this is a good
idea? Is it easily implementable?


Sorry for all the mess, and thank you for your cooperation.

Regards,
Yuta
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