[SR-Users] Websockets WSS problem with NOTIFY

[Daniel-Constantin Mierla]

Just fyi, tls compression is disabled by default in the tls module:
- 
http://kamailio.org/docs/modules/stable/modules/tls.html#tls_disable_compression

But you can try with it set and see what happens.

Cheers,
Daniel

On 1/24/13 10:09 AM, Peter Dunkley wrote:
> I shod also add that the Kamailio WebSocket implementation does not 
> support any extensions.  So unless the deflate frame extension is 
> implicit for TLS it will not be negotiated.  Further, the 
> implementation does not set any compressed bits and all unused flags 
> etc should be zeroed automatically - but I will look at the code later.
>
> Peter
>
> On 24 Jan 2013, at 09:05, Peter Dunkley 
> <peter.dunkley at crocodile-rcs.com 
> <mailto:peter.dunkley at crocodile-rcs.com>> wrote:
>
>> I am not sure how to investigate this.  It sounds like it might be a 
>> TLS related problem (or a WebSocket/TLS interworking problem in 
>> Kamailio).  I don't know anything about the Kamailio TLS 
>> implementation - I just drop WebSocket frames into it as required.
>>
>> I did do (a little) WSS testing and saw no problems myself.
>>
>> Regards,
>>
>> Peter
>>
>> On 23 Jan 2013, at 22:12, Pete Kelly <pkelly at gmail.com 
>> <mailto:pkelly at gmail.com>> wrote:
>>
>>> Hi, I am having an issue at the moment with SIP NOTIFY messages 
>>> being sent from Kamailio (latest git master) over wss transport
>>>
>>> I am getting reports from the receiving end saying "Compressed bit 
>>> must be 0 if no negotiated deflate-frame extension"
>>>
>>> The only reference I can find to it is at the following URL... where 
>>> the problem was caused by the server miscalculating the size of the 
>>> msg: 
>>> http://stackoverflow.com/questions/12308728/compressed-bit-must-be-0-when-sending-a-message-to-websocket-client
>>>
>>> Does anyone have any suggestions as to how I could debug this within 
>>> Kamailio? It sounds like Kamailio may be sending some incorrect 
>>> packet information but I am unsure at this point.
>>>
>>>
>>>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, April 16-17, 2013, Berlin
  - http://conference.kamailio.com -

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