[Kamailio-Users] Kamailio RTP Proxy issues

[General Lee]

Hi Klaus.

I use the rtpproxy_offer + answer functions without any flags. I've listed
parts of my code below.

route[2]
{
	if (is_method("BYE|CANCEL"))
	{
		unforce_rtp_proxy();
	} else if (is_method("INVITE")) {
		if(has_body("application/sdp")){
			if(rtpproxy_offer())
				t_on_reply("1");
		}else{
			t_on_reply("2");		#this will handle the initial INVITE that has no SDP
		}
	}
	if(is_method("ACK") && has_body("application/sdp")){
			rtpproxy_answer();	
}
}




onreply_route[1]
{

	if (has_body("application/sdp"))
		rtpproxy_answer();

	if (isbflagset(6))
	{
		search_append('Contact:.*sip:[^>[:cntrl:]]*', ';nty=yes');
		search_append('m:.<sip:[^>[:cntrl:]]*', ';nty=yes');
		if(cmp_str("MY_IP","$si"))
		else {
			fix_nated_contact();
		}
	}
	exit;
}

onreply_route[2]
{
	if (has_body("application/sdp"))
		rtpproxy_offer();
		
	if (isbflagset(6))
	{
		search_append('Contact:.*sip:[:cntrl:]]*', ';nty=yes');
		search_append('m:.<sip:[^>[:cntrl:]]*', ';nty=yes');
		if(cmp_str("MY_IP","$si"))
		else {
			fix_nated_contact();
		}
	}
	exit;
}




Klaus Darilion-2 wrote:
> 
> Do you use force_rtpproxy() or the ...offer() and ...answer() functions?
> 
> Do you use any flags when call the functions?
> 
> klaus
> 
> General Lee schrieb:
>> Hi,
>> 
>> I am currently integrating an H323 to SIP gateway with Kamailio and
>> trying
>> to route all calls through RTP Proxy. 
>> 
>> I have a problem where RTP Proxy treats both the incoming H323 gateway
>> call
>> (Caller) and outgoing SIP call (Callee) as the 'caller' in the RTP Proxy
>> syslog. RTP Proxy doesn't assign a 'callee' therefore not able to setup a
>> call (See syslog below). I have configured Kamailio to accept the 'ACK'
>> with
>> SDP and this is working correctly.
>> 
>> When I enable H323 Fast connect and the SDP is included in the INVITE,
>> the
>> call connects correctly and is routed through RTP Proxy. I feel the
>> problem
>> is related to RTP Proxy receiving an INVITE from the H323-SIP gateway
>> without SDP.
>> 
>>  Can anyone explain why RTP Proxy treats both the incoming H323 Gateway
>> call
>> and outgoing SIP call as the 'caller' in the RTP Proxy syslog. How can I
>> make RTP Proxy treat the incoming H323 call as the 'callee'? 
>> 
>> Thanks,
>> 
>> 
>> 
>> 
>> More information below
>> 
>> *******************************************************************************
>> 
>> My H323 endpoints use H323 Slow Connect, so when the H323-SIP Gateway
>> delivers the 'INVITE' to Kamailio there is no SDP included in the INVITE.
>> I
>> added a 'onreply_route' to the Kamailio configuration file which handles
>> the
>> 'ACK' with SDP which is working correctly.
>> 
>> All of my SIP calls (Signalling + Media) are forced though RTP Proxy and
>> I
>> would like to force all H323-SIP Gateway calls through RTP Proxy.
>> 
>> When placing a call from my H323 endpoint to my SIP UA, the RTP Proxy
>> syslog
>> records the incoming and outgoing call, however RTP Proxy states that the
>> ‘callee’ is actually the 'caller'. The RTP Proxy syslog also states that
>> the
>> caller is the caller so there is no 'callee' (see below).  In the syslogs
>> both the ‘callee’ and ‘caller’ are recognised as the ‘caller’ so RTP
>> Proxy
>> has no callee to send the traffic back to.
>> 
>> When the INVITE is received the ‘callee’ is populated in the syslogs as
>> the
>> ‘caller’. The H323 Gateway call is not recorded until after the ‘ACK’ 
>> with
>> SDP is received from the gateway.
>> 
>> Oct 27 17:33:05 rtpproxy[24086]: INFO:handle_command: pre-filling
>> caller's
>> address with 72.19.211.106:49620 (Should be callee)
>> Oct 27 17:33:05 rtpproxy[24086]: INFO:handle_command: pre-filling
>> caller's
>> address with 72.19.211.106:49622  (Should be callee)
>> 
>> Then after the ‘ACK’ is received from the Gateway, the H323 call is
>> mentioned in the syslog as well as the other caller who is supposed to be
>> the callee. 
>> 
>> Oct 27 17:33:06 rtpproxy[24086]: INFO:handle_command: pre-filling
>> caller's
>> address with 69.72.11.51:10204
>> Oct 27 17:33:06 rtpproxy[24086]: INFO:handle_command: pre-filling
>> caller's
>> address with 69.72.11.51:10214
>> 
>> Oct 27 17:33:06 rtpproxy[24086]: INFO:handle_command: pre-filling
>> caller's
>> address with 72.19.211.106:49620
>> Oct 27 17:33:06 rtpproxy[24086]: INFO:handle_command: pre-filling
>> caller's
>> address with 72.19.211.106:49622
>> 
>>   
> 
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