26 Mar
2013
26 Mar
'13
5:29 p.m.
tcp_accept_no_cl=yes should always be used when Kamailio is receiving HTTP
traffic (the event_route[xhttp:request] is used) as HTTP/1.1 does not use
the Content-Length: header if there is no message body (as in the case of
the WebSocket handshake). Even when there is a body Content-Length: is
not needed if HTTP/1.0 backwards compatibility is not required.
SIP is different. A SIP message over TCP must always contain a
Content-Length: header. When there is no body the Content-Length: is 0.
JsSIP is doing exactly the right thing here. It should not be putting
Content-Length: into that WebSocket handshake.
Regards,
Peter
Hello Peter,
Thank you for the quick reply. Yes, that did the trick. Changing
"tcp_accept_no_cl" to value of no was the resolution.
It seems that the JsSIP Tryit sample code, which I was trying to hack,
doesn't use Content-Length in the header. I wonder if this should be
changed to set the Content-Length in the HTTP header.
At any rate, thanks again. I'm now registered, which is what I was
looking
to do.
Brad
On Tue, Mar 26, 2013 at 4:08 PM, Peter Dunkley <
peter.dunkley(a)crocodile-rcs.com> wrote:
--
Peter Dunkley
Technical Director
Crocodile RCS Ltd
Hello,
Check that you have "tcp_accept_no_cl=yes" in your configuration.
This is required for Kamailio to parse messages over TCP which do not
have
"Content-Length:" headers (including HTTP requests).
If that doesn't work try running Kamailio with debug output at its
highest
level (you'll need to output debug to stderr when doing this as syslog
won't capture it all) so that more detailed debug can be provided to
track
this down.
Regards,
Peter
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Hi,
Wondering if anyone could please help me debug what is wrong with my
kamailio.cfg for Websockets support. I'm using JsSIP sample
application,
and I've compiled Kamailio 4.0 for WS
support. My config is borrowed
from
link this link [1]. Wondering if anyone can help
me debug this.
Error
is
bad request, from syslog:
Mar 26 19:26:42 ace /usr/local/sbin/kamailio[25774]: ERROR: <core>
[tcp_read.c:1296]: ERROR: tcp_read_req: bad request, state=7, error=4
buf:#012GET / HTTP/1.1#015#012Upgrade: websocket#015#012Connection:
Upgrade#015#012Host: sip.XXX.net:8888#015#012Origin:
http://sip.XXX.net#015#012Sec-WebSocket-Protocol: sip#015#012Pragma:
no-cache#015#012Cache-Control: no-cache#015#012Sec-WebSocket-Key:
p2cM0XbAejvloY1h+pACIw==#015#012Sec-WebSocket-Version:
13#015#012Sec-WebSocket-Extensions:
x-webkit-deflate-frame#015#012Cookie:
_pk_id.6.4c1d=3ee006d4f8af735c.1363914085.2.1364326003.1363915087.;
_pk_ses.6.4c1d=*#015#012#015#012#012parsed:#012GET /
HTTP/1.1#015#012Upgrade: websocket#015#012Connection:
Upgrade#015#012Host:
sip.XXX.net:8888#015#012Origin:
http://sip.XXX.net#015#012Sec-WebSocket-Protocol: sip#015#012Pragma:
no-cache#015#012Cache-Control: no-cache#015#012Sec-WebSocket-Key:
p2cM0XbAejvloY1h+pACIw==#015#012Sec-WebSocket-Version:
13#015#012Sec-WebSocket-Extensions:
x-webkit-deflate-frame#015#012Cookie:
_pk_id.6.4c1d=3ee006d4f8af735c.1363914085.2.1364326003.1363915087.;
_pk_ses.6.4c1d=*#015#012#015#012
Any ideas? Can send my kamailio.cfg if necessary.
[1] Kamailio sample config for WebSockets
https://gist.github.com/jesusprubio/4066845
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--
Peter Dunkley
Technical Director
Crocodile RCS Ltd
_______________________________________________
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