[OpenSIPS-Users] Using remove_hf/insert_hf leads to garbage in SIP message

[nick at uni-petrol.com]

Forgot to add, that problem exists on opensips rev 7915 and latest 
opensips rev 8151 from trunk.
OS: CentOS 5.6 x86_64
Hope that's help.

On Mon, 11 Jul 2011 17:41:02 +0400, nick at uni-petrol.com wrote:

> Dear All!
>
> I need to replace Contact header receiving from UAC to new one.
>
> I have strange problem with all Yealink phones.
>
> When I use remove_hf/insert_hf in onreply route opensips didn't 
> proper
> strip header.
>
> My config:
>
> onreply_route[1]
> {
>
> if(is_present_hf("Contact"))
> {
> if(remove_hf("Contact"))
> {
> insert_hf("Contact: rn", "From");
> }
> else
> {
> xlog("L_ERR", "Error removing Contact header: M=$rm RURI=$ru F=$fu 
> T=$tu
> IP=$si ID=$ci UA=$ua CT=$ct TO=$tUn");
> }
> }
>
> }
>
> As you can see from trace below opensips proper remove Contact 
> header,
> but leave "sip:username at UAC-WAN-IP:1197" before "Content-Type:
> application/sdp"
>
> SIP/2.0 200 OK
> Via: SIP/2.0/TCP
>
SIP-UPLINK-GW-IP:5092;received=SIP-UPLINK-GW-IP;branch=z9hG4bK-d8754z-cf461413f8f8b92e-1---d8754z-;rport=35007
> Record-Route:
> Record-Route:
> Contact:
> From: "1234567" ;tag=ff571748
> To: ;tag=193729847
> Call-ID: NzkxZjNjNzUxNjVhMGZkMjZkZDY5M2RkNTk2NWE1ODU.
> CSeq: 1 INVITE
> sip:username at UAC-WAN-IP:1197Content-Type: application/sdp
> Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, 
> REGISTER,
> SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
> User-Agent: Yealink SIP-T20P 9.60.14.8
> Content-Length: 203
>
> v=0
> o=- 20000 20000 IN IP4 UAC-LAN-IP
> s=SDP data
> c=IN IP4 192.168.30.4
> t=0 0
> m=audio 17264 RTP/AVP 8 96
> a=rtpmap:8 PCMA/8000
> a=fmtp:96 0-15
> a=rtpmap:96 telephone-event/8000
> a=sdpmangled:yes
>
> Trace without Contact manipulations:
>
> SIP/2.0 200 OK
> Via: SIP/2.0/TCP
>
SIP-UPLINK-GW-IP:5092;received=SIP-UPLINK-GW-IP;branch=z9hG4bK-d8754z-37e3024aff94374c-1---d8754z-;rport=35030
> Record-Route:
> Record-Route:
> From: "1234567" ;tag=71ab6c06
> To: ;tag=1956700973
> Call-ID: NzliOWI0OTAzYjk0NmIwZDM4ZWFkZDI4Yjg5NWUxNjQ.
> CSeq: 1 INVITE
> Contact:
> Content-Type: application/sdp
> Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, 
> REGISTER,
> SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
> User-Agent: Yealink SIP-T20P 9.60.14.8
> Content-Length: 203
>
> v=0
> o=- 20001 20001 IN IP4 UAC-LAN-IP
> s=SDP data
> c=IN IP4 192.168.30.4
> t=0 0
> m=audio 17188 RTP/AVP 8 96
> a=rtpmap:8 PCMA/8000
> a=fmtp:96 0-15
> a=rtpmap:96 telephone-event/8000
> a=sdpmangled:yes
>
> Please help.
>
> Thanks in advance!