Re: CherryPy cpstats and ws4py

[Israel Brewster]

Ok, let me ask a different question: the impression I have gotten when trying 
to find help with CherryPy in general and ws4py specifically is that these 
frameworks are not widely used or well supported. Is that a fair assessment, or 
do I just have issues that are outside the realm of experience for other users? 
If it is a fair assessment, should I be looking at a different product for my 
next project? I know there are a number of options, CherryPy was simply the 
first one suggested to me, and ws4py is what is listed in their docs as the 
framework to use for Web Sockets.

Thanks for any feedback that can be provided.
---
Israel Brewster
Systems Analyst II
Ravn Alaska
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7293
---


 

> On Nov 3, 2015, at 8:05 AM, Israel Brewster  wrote:
> 
> I posted this to the CherryPy and ws4py mailing lists, but in the week since 
> I did that I've only gotten two or three views on each list, and no 
> responses, so as a last-ditch effort I thought I'd post here. Maybe someone 
> with more general python knowledge than me can figure out the traceback and 
> from there a solution.
> 
> Is it possible to use ws4py in conjunction with the cpstats CherryPy tool? I 
> have a CherryPy (3.8.0) web app that uses web sockets via ws4py. Tested and 
> working. I am now trying to get a little more visibility into the functioning 
> of the server, so to that end I enabled the cpstats tool by adding the 
> following line to my '/' configuration:
> 
> tools.cpstats.on=True
> 
> Unfortunately, as soon as I do that, attempts to connect a web socket start 
> failing with the following traceback:
> 
> [28/Oct/2015:08:18:48]  
> Traceback (most recent call last):
>  File 
> "/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
>  line 104, in run
>hook()
>  File 
> "/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
>  line 63, in __call__
>return self.callback(**self.kwargs)
>  File "build/bdist.macosx-10.10-intel/egg/ws4py/server/cherrypyserver.py", 
> line 200, in upgrade
>ws_conn = get_connection(request.rfile.rfile)
>  File "build/bdist.macosx-10.10-intel/egg/ws4py/compat.py", line 43, in 
> get_connection
>return fileobj._sock
> AttributeError: 'KnownLengthRFile' object has no attribute '_sock'
> [28/Oct/2015:08:18:48] HTTP 
> Request Headers:
>  PRAGMA: no-cache
>  COOKIE: autoTabEnabled=true; fleetStatusFilterCompany=7H; 
> fleetStatusFilterLocation=ALL; fleetStatusRefreshInterval=5; inputNumLegs=5; 
> session_id=5c8303896aff419c175c79dfadbfdc9d75e6c45a
>  UPGRADE: websocket
>  HOST: flbubble.ravnalaska.net:8088
>  ORIGIN: http://flbubble.ravnalaska.net
>  CONNECTION: Upgrade
>  CACHE-CONTROL: no-cache
>  SEC-WEBSOCKET-VERSION: 13
>  SEC-WEBSOCKET-EXTENSIONS: x-webkit-deflate-frame
>  USER-AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) 
> AppleWebKit/601.2.7 (KHTML, like Gecko) Version/9.0.1 Safari/601.2.7
>  SEC-WEBSOCKET-KEY: Szh6Uoe+WzqKR1DgW8JcXA==
>  Remote-Addr: 10.9.1.59
> [28/Oct/2015:08:18:48] HTTP 
> Traceback (most recent call last):
>  File 
> "/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
>  line 661, in respond
>self.hooks.run('before_request_body')
>  File 
> "/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
>  line 114, in run
>raise exc
> AttributeError: 'KnownLengthRFile' object has no attribute '_sock'
> 
> Disable tools.cpstats.on, and the sockets start working again. Is there some 
> way I can fix this so I can use sockets as well as gather stats from my 
> application? Thanks.
> 
> ---
> Israel Brewster
> Systems Analyst II
> Ravn Alaska
> 5245 Airport Industrial Rd
> Fairbanks, AK 99709
> (907) 450-7293
> ---
> 
> -- 
> https://mail.python.org/mailman/listinfo/python-list

-- 
https://mail.python.org/mailman/listinfo/python-list

CherryPy cpstats and ws4py

[Israel Brewster]

I posted this to the CherryPy and ws4py mailing lists, but in the week since I 
did that I've only gotten two or three views on each list, and no responses, so 
as a last-ditch effort I thought I'd post here. Maybe someone with more general 
python knowledge than me can figure out the traceback and from there a solution.

Is it possible to use ws4py in conjunction with the cpstats CherryPy tool? I 
have a CherryPy (3.8.0) web app that uses web sockets via ws4py. Tested and 
working. I am now trying to get a little more visibility into the functioning 
of the server, so to that end I enabled the cpstats tool by adding the 
following line to my '/' configuration:

tools.cpstats.on=True

Unfortunately, as soon as I do that, attempts to connect a web socket start 
failing with the following traceback:

[28/Oct/2015:08:18:48]  
Traceback (most recent call last):
  File 
"/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
 line 104, in run
hook()
  File 
"/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
 line 63, in __call__
return self.callback(**self.kwargs)
  File "build/bdist.macosx-10.10-intel/egg/ws4py/server/cherrypyserver.py", 
line 200, in upgrade
ws_conn = get_connection(request.rfile.rfile)
  File "build/bdist.macosx-10.10-intel/egg/ws4py/compat.py", line 43, in 
get_connection
return fileobj._sock
AttributeError: 'KnownLengthRFile' object has no attribute '_sock'
[28/Oct/2015:08:18:48] HTTP 
Request Headers:
  PRAGMA: no-cache
  COOKIE: autoTabEnabled=true; fleetStatusFilterCompany=7H; 
fleetStatusFilterLocation=ALL; fleetStatusRefreshInterval=5; inputNumLegs=5; 
session_id=5c8303896aff419c175c79dfadbfdc9d75e6c45a
  UPGRADE: websocket
  HOST: flbubble.ravnalaska.net:8088
  ORIGIN: http://flbubble.ravnalaska.net
  CONNECTION: Upgrade
  CACHE-CONTROL: no-cache
  SEC-WEBSOCKET-VERSION: 13
  SEC-WEBSOCKET-EXTENSIONS: x-webkit-deflate-frame
  USER-AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) 
AppleWebKit/601.2.7 (KHTML, like Gecko) Version/9.0.1 Safari/601.2.7
  SEC-WEBSOCKET-KEY: Szh6Uoe+WzqKR1DgW8JcXA==
  Remote-Addr: 10.9.1.59
[28/Oct/2015:08:18:48] HTTP 
Traceback (most recent call last):
  File 
"/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
 line 661, in respond
self.hooks.run('before_request_body')
  File 
"/Library/Python/2.7/site-packages/CherryPy-3.8.0-py2.7.egg/cherrypy/_cprequest.py",
 line 114, in run
raise exc
AttributeError: 'KnownLengthRFile' object has no attribute '_sock'

Disable tools.cpstats.on, and the sockets start working again. Is there some 
way I can fix this so I can use sockets as well as gather stats from my 
application? Thanks.

---
Israel Brewster
Systems Analyst II
Ravn Alaska
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7293
---

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