[OpenSIPS-Users] Strange errors forwarding requests

[Erik Versaevel]

Hi All,

I attempted an migration last night (from our current environment to this new setup) but i ran into this
problem as soon as i tried to make some test calls, funny thing is i can't get it reproduced :/ Any clues
on how to debug this any further?

Kind regards,

Erik

Op 27-4-2010 15:17, Erik Versaevel schreef:
> Hi all,
> 
> I'm building a setup in which opensips is acting as registar for my endpoints and loadbalancing
> calls made by those endpoint over an cluster of asterisk machines. (so that if we need more asterisk
> power, we just have to add another destination to the loadbalancer module)
> Opensips is listening on multiple IP addresses and uses the loadbalancer module to poll my asterisk
> machines and select the destination.
> My problem is that every now and then opensips fails to forward an invite to my asterisk cluster and
> generates
> 
> 	"ERROR:core:udp_send: sendto(sock,0x77b81280,1353,0,0x77b81b04,16): Operation not permitted(1)"
> 
> there is some iptables filtering on this machine, however it is not showing drops in the logfile (and it keeps
> occuring even without any iptable rules).
> I tried stracing opensips but all i get is:
> 
> 	opensipstrace.7423:sendto(6, "INVITE sip:E164_DST_PHONE_NR at OPENSIPS_IP_ADDRESS SIP/2.0
> 	Record-Route: <sip:OPENSIPS_IP_ADDRESS;lr=on;ftag=AI05ED431A05432EB8;nat=yes;did=fd6.e1f16fe3;vsf=AAAAAAMIBgl3AggLFgF5HAAFGhwBHzE3NC44MQ-->
> 	Via: SIP/2.0/UDP OPENSIPS_IP_ADDRESS;branch=z9hG4bK3177.1e0e38b7.0
> 	Via: SIP/2.0/UDP 192.168.178.44:5060;received=CPE_IP_ADDRESS;rport=61008;branch=z9hG4bK2010Apr222938466E164_DST_PHONE_NR
> 	To: <sip:E164_DST_PHONE_NR at OPENSIPS_IP_ADDRESS>
> 	From: \"3961\" <sip:3961 at OPENSIPS_IP_ADDRESS>;tag=AI05ED431A05432EB8
> 	Call-ID: AIF001C45E85F7921C at 192.168.178.44
> 	CSeq: 2 INVITE
> 	Max-Forwards: 69
> 	Contact: <sip:E164PHONE_NR at CPE_IP_ADDRESS:61008;line=AIF8F01E8DF866D7CB>
> 	Accept: application/sdp
> 	Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,OPTIONS,REFER
> 	Allow-Events: dialog,message-summary
> 	P-Preferred-Identity: <sip:E164PHONE_NR at OPENSIPS_IP_ADDRESS>
> 	Privacy: none
> 	User-Agent: SomeStrangeDude
> 	Content-Type: application/sdp
> 	Content-Length: 324
> 	I-FromDisp: <null>
> 	I-FromUri: E164PHONE_NR
> 	I-CustId: 3961
> 	
> 	v=0
> 	o=intelligate 1133701155 1133701155 IN IP4 192.168.178.44
> 	s=call
> 	c=IN IP4 CPE_IP_ADDRESS
> 	t=0 0
> 	m=audio 5004 RTP/AVP 18 8 101
> 	a=rtpmap:18 G729/8000
> 	a=fmtp:18 annexb=no
> 	a=rtpmap:8 PCMA/8000
> 	a=rtpmap:101 telephone-event/8000
> 	a=fmtp:101 0-15
> 	a=sendrecv
> 	a=ptime:20
> 	a=direction:active
> 	a=oldmediaip:192.168.178.44
> 	", 1253, 0, {sa_family=AF_INET, sin_port=htons(5060), sin_addr=inet_addr("ASTERISK_IP_ADDRESS")}, 16) = -1 EPERM (Operation not permitted)
> 
> I also use the uac_replace_from() to mangle the from header so asterisk uses the correct user/peer/client to connect the call (codec/dialplan etc).
> I'm having trouble reproducing the error as it's not allways occuring, the errors i straced where mainly the initial invite towards my asterisk
> cluster and a few 200 OK's which didn't get processed correctly.
> 
> Any clues on how to debug this further?
> 
> Kind regards,
> 
> Erik Versaevel
> 
>