'module' object has no attribute 'SIGCHLD'

[alexwahl]

Hi!
i tried to start the echo demo. Therfore i put the echo.py and websocket.py in one directory. when i try to start up i get this error:

H:\workspace\python\websocketServer\src>python echo.py 9999
WARNING: no 'resource' module, daemonizing is disabled
Traceback (most recent call last):
File "echo.py", line 74, in
server.start_server()
File "H:\workspace\python\websocketServer\src\websocket.py", line 827, in star
t_server

signal.SIGCHLD: signal.getsignal(signal.SIGCHLD),

AttributeError: 'module' object has no attribute 'SIGCHLD'

Python version is 3.3.2

[DirectXMan12]

this appears to be a Windows issue. A fix is in the works.

[vedmack]

I tried to download the master.zip and run the following command on my Windows7
C:\websockify-master>"c:\Portable Python 2.7.6.1\App\python.exe" run 1501 10.0.0.141:1501
But got the following error (that end with the same as in the issue title)

WARNING: no 'resource' module, daemonizing is disabled
WebSocket server settings:

• Listen on :1501
• Flash security policy server
• No SSL/TLS support (no cert file)
• proxying from :1501 to 10.0.0.141:1501
  Traceback (most recent call last):
  File "run", line 5, in
  websockify.websocketproxy.websockify_init()
  File "C:\websockify-master\websockify\websocketproxy.py", line 419, in websockify_init
  server.start_server()
  File "C:\websockify-master\websockify\websocket.py", line 916, in start_server
  signal.SIGCHLD: signal.getsignal(signal.SIGCHLD),
  AttributeError: 'module' object has no attribute 'SIGCHLD'

Any ideas on how it can be fixed?

Thanks ahead!

[joerg86]

Hi,
I'm running into the same problem on windows. It seems that it was already fixed (see commit linked in this thread), but recently, websockify.py has changed a bit and signal.SIGCHLD is again expected to be there (which is not the case on windows). I have made a patch and will try to submit it as it seems that I cannot uploaded it here directly.

Jörg

[joerg86]

Sorry, I was wrong. The patch submitted by DirectXMan12 simply hasn't been merged into the master branch. Why not?

[DirectXMan12]

@joerg86 Sorry about the delay (holidays). IIRC, I was waiting for someone with Window to actually test my change to see if it worked. I thought I posted it somewhere, but I can't seem to find the contents of the patch itself. If you have a working patch, I'd be happy to look at it. Just submit a pull request against the repository (and mention this bug commit message).

[jebej]

I applied the commit above (3ee9ff7) and got a different error after trying to connect to the server:

D:\USER\Downloads\websockify-master>D:\Programs\PortablePython2.7.6.1\App\pyth
on.exe run 8088 localhost:30000
WARNING: no 'resource' module, daemonizing is disabled
WebSocket server settings:
  - Listen on :8088
  - Flash security policy server
  - No SSL/TLS support (no cert file)
  - proxying from :8088 to localhost:30000
Traceback (most recent call last):
  File "run", line 5, in <module>
    websockify.websocketproxy.websockify_init()
  File "D:\USER\Downloads\websockify-master\websockify\websocketproxy.py", lin
e 419, in websockify_init
    server.start_server()
  File "D:\USER\Downloads\websockify-master\websockify\websocket.py", line 101
8, in start_server
    self.msg("handler exception: %s", str(exc))
UnboundLocalError: local variable 'exc' referenced before assignment

D:\USER\Downloads\websockify-master>Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "D:\Programs\PortablePython2.7.6.1\App\lib\multiprocessing\forking.py", l
ine 380, in main
    prepare(preparation_data)
  File "D:\Programs\PortablePython2.7.6.1\App\lib\multiprocessing\forking.py", l
ine 489, in prepare
    file, path_name, etc = imp.find_module(main_name, dirs)
ImportError: No module named run

[mliudev]

Any updates on this? It looks to be working with the changes from the bug/108-no-sigchld-in-windows branch.

edit: Looks like this is still an issue. I'm getting the same error as @jeremy-y12 when attempting to connect to the URL given by noVNC launch.sh.

[floooh]

Bump. I'm currently running into the same problem on Windows (OSX works well). Is there a recommended way to make websockify work on Windows?

Thanks!

[samhed]

Is there a recommended way to make websockify work on Windows?

I'm afraid not, I haven't seen anyone managing to get it working on Windows recently.

[totaam]

I had something that more or less worked OK on win32, based on the trunk code from a few months ago.
You need the SIGCHLD bits, those should be merged already as they're trivial and always needed on win32.
The much more difficult part is handling WSARESTART on the socket. I haven't tried it lately, so it may have broken again - it's very brittle, here are some pointers:
http://xpra.org/trac/ticket/1211

[ironmann250]

@jebej the warning that it can't find resource module is because it is named rsrc not resource so you can type import rsrc as resource in webscoket.py

[samfrances]

Still seeing this issue on windows. Any news?

[sebLopezCot]

After trying all fixes above, I was able to get it to run on Windows in python, but when a socket connects it complains about multiprocess. Meanwhile the Nodejs version of websockify works fine under Windows (see novnc/novnc#807).

[CendioOssman]

Fixed in ddcec96. However many more issues on Windows remain. See #67.

[docdawning]

I've just tried Websockify 0.8.0 on Windows 10 and I run in to this too:

websockify 9000 192.168.19.1:9000
WARNING: no 'resource' module, daemonizing is disabled
WebSocket server settings:
  - Listen on :9000
  - Flash security policy server
  - No SSL/TLS support (no cert file)
  - proxying from :9000 to 192.168.19.1:9000
Traceback (most recent call last):
  File "C:\Python27\Scripts\websockify-script.py", line 11, in <module>
    load_entry_point('websockify==0.8.0', 'console_scripts', 'websockify')()
  File "C:\Python27\lib\site-packages\websockify-0.8.0-py2.7.egg\websockify\websocketproxy.py", line 525, in websockify_init
    server.start_server()
  File "C:\Python27\lib\site-packages\websockify-0.8.0-py2.7.egg\websockify\websocket.py", line 986, in start_server
    signal.SIGCHLD: signal.getsignal(signal.SIGCHLD),
AttributeError: 'module' object has no attribute 'SIGCHLD'

So I switched to the head revision of the repo, and got:

websockify 9000 192.168.19.1:9000
WARNING: no 'resource' module, daemonizing is disabled
Windows is not supported at this time

[wenchangshou2]

I've just tried Websockify 0.8.0 on Windows 10 and I run in to this too:

websockify 9000 192.168.19.1:9000
WARNING: no 'resource' module, daemonizing is disabled
WebSocket server settings:
  - Listen on :9000
  - Flash security policy server
  - No SSL/TLS support (no cert file)
  - proxying from :9000 to 192.168.19.1:9000
Traceback (most recent call last):
  File "C:\Python27\Scripts\websockify-script.py", line 11, in <module>
    load_entry_point('websockify==0.8.0', 'console_scripts', 'websockify')()
  File "C:\Python27\lib\site-packages\websockify-0.8.0-py2.7.egg\websockify\websocketproxy.py", line 525, in websockify_init
    server.start_server()
  File "C:\Python27\lib\site-packages\websockify-0.8.0-py2.7.egg\websockify\websocket.py", line 986, in start_server
    signal.SIGCHLD: signal.getsignal(signal.SIGCHLD),
AttributeError: 'module' object has no attribute 'SIGCHLD'

So I switched to the head revision of the repo, and got:

websockify 9000 192.168.19.1:9000
WARNING: no 'resource' module, daemonizing is disabled
Windows is not supported at this time

already settled?