[IPython-User] sockjs code errors

Matthias BUSSONNIER bussonniermatthias@gmail....
Fri Sep 21 10:40:07 CDT 2012


Le 21 sept. 2012 à 17:27, Darren Govoni a écrit :

> Not sure. But the calls should be rather instant. The page is only up for a few seconds, then I try to execute a cell and get the errors right away, so I don't think its timing out. 
> 
> There is some added security on the network I am on, but what struck me was there is still a ws:// error reference.

Sockjs does try to establish web socket connexion first and use fallbacks only if it fails.
I guess here the connexion is established, so socks assume web socket does work, but fail afterward.
It should be possible to ask sockjs to avoid trying web socket in your particular case.

see https://github.com/sockjs/sockjs-client#sockjs-client-api

-- 
Matthias


> 
> If all the calls return on the same outbound port as the notebook, I think our security will be satisfied.
> 
> <br><br><br>------- Original Message -------
> On 9/21/2012  10:12 AM Matthias BUSSONNIER wrote:<br>sept. 2012 � 15:23, Darren Govoni a �crit :
> <br>
> <br>> Hi again,
> <br>> 
> <br>>    I'm trying to test the SockJS PR code on our network (which restricts some non-origination port access). Here is the errors I get loading a notebook.
> <br>> 
> <br>>  
> <br>> GET http://ec2-23-22-85-215.compute-1.amazonaws.com/...6f72-2332-4b46-801e-7b2ac3d7279c?_=1348150153522
> <br>> 200 OK
> <br>> 	 875ms	
> <br>> jquery...v=ddb84 (line 4)
> <br>> POST http://ec2-23-22-85-215.compute-1.amazonaws.com/...ls?notebook=3f516f72-2332-4b46-801e-7b2ac3d7279c
> <br>> 200 OK
> <br>> 	 156ms	
> <br>> jquery...v=ddb84 (line 4)
> <br>> Kernel started: 
> <br>> 4fcdd448-528c-4398-9f35-66ef0c8dd845
> <br>> kernel.js?v=8ec9a (line 72)
> <br>> Starting SockJS:
> <br>> http://ec2-23-22-85-215.compute-1.amazonaws.com/kernels/4fcdd448-528c-4398-9f35-66ef0c8dd845
> <br>> kernel.js?v=8ec9a (line 128)
> <br>> GET http://ec2-23-22-85-215.compute-1.amazonaws.com/...s/4fcdd448-528c-4398-9f35-66ef0c8dd845/sock/info
> <br>> 200 OK
> <br>> 	 31ms	
> <br>> sockjs...v=677b0 (line 27)
> <br>> POST http://ec2-23-22-85-215.compute-1.amazonaws.com/...f35-66ef0c8dd845/sock/694/20e9o3i2/xhr_streaming
> <br>> Aborted
> <br>> 	 	
> <br>> sockjs...v=677b0 (line 27)
> <br>> POST http://ec2-23-22-85-215.compute-1.amazonaws.com/...28c-4398-9f35-66ef0c8dd845/sock/694/9j21bbu5/xhr
> <br>> 200 OK
> <br>> 	 156ms	
> <br>> sockjs...v=677b0 (line 27)
> <br>> POST http://ec2-23-22-85-215.compute-1.amazonaws.com/.. .398-9f35-66ef0c8dd845/sock/694/9j21bbu5/xhr_send
> <br>> 500 Internal Server Error
> <br>> 	 63ms	
> <br>> sockjs...v=677b0 (line 27)
> <br>> POST http://ec2-23-22-85-215.compute-1.amazonaws.com/...28c-4398-9f35-66ef0c8dd845/sock/694/9j21bbu5/xhr
> <br>> 200 OK
> <br>> 	 47ms	
> <br>> sockjs...v=677b0 (line 27)
> <br>> "NetworkError: 500 Internal Server Error - http://ec2-23-22-85-215.compute-1.amazonaws.com/kernels/4fcdd448-528c-4398-9f35-66ef0c8dd845/sock/694/9j21bbu5/xhr_send"
> <br>> xhr_send
> <br>> The connection to ws://ec2-23-22-85-215.compute-1.amazonaws.com/kernels/4fcdd448-528c-4398-9f35-66ef0c8dd845/sock/694/k9gnz13n/websocket was interrupted while the page was loading.
> <br>>  	
> <br>> ...)})},y.prototype._didMessage=function(a){var b=this,c=a.slice(0,1);switch(c){cas...
> <br>> sockjs...v=677b0 (line 27)
> <br>Can it be some security measure so that even with connexion=keep-alive either a proxy or the remote server close the connexion after  a given timeout ?
> <br>I have not enough netcat foo to tell you how to check.
> <br>-- 
> <br>Matthias 
> <br>
> <br>
> <br>
> <br>>  
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