[SR-Users] append_hf on kamctl fifo dlg_bridge destroys ACK

Kristian F. Høgh kfh at uni-tel.dk
Thu Oct 30 16:21:03 CET 2014


Hi,

Tested on 4.0.6 (+contact header REFER patch) and trunk.
When appending header on originating INVITE, the ACK from kamailio gets messed up.

I generate call, using myself as proxy
kamctl fifo dlg_bridge sip:201@[domain] sip:202@[domain] sip:[kamailio-ip]:5060

In route[tm:local-request], i use append_hf("P-Asserted-Identity:...")

If I remove append_hf, the ACK looks OK.

Regards,
Kristian Høgh


Trace on local interface:

        INVITE sip:201@[domain] SIP/2.0
        Via: SIP/2.0/UDP [kamailio-ip];branch=z9hG4bK9d54.ef433c83000000000000000000000000.0
        To: <sip:201@[domain]>
        From: <sip:controller at kamailio.org>;tag=760f7752be879bf1a1346b149d21b85f-8c89
        CSeq: 10 INVITE
        Call-ID: 0b4f5d725846cc40-12109@[kamailio-ip]
        Max-Forwards: 70
        Content-Length: 147
        User-Agent: kamailio
        Contact: <sip:controller at kamailio.org:5060>
        Content-Type: application/sdp
        P-Asserted-Identity: <sip:201@[domain]>
<snip SDP>


        SIP/2.0 200 OK
        Via: SIP/2.0/UDP [kamailio-ip];rport=5060;branch=z9hG4bK9d54.ef433c83000000000000000000000000.0
        Record-Route: <sip:[kamailio-ip];lr;ftag=760f7752be879bf1a1346b149d21b85f-8c89;vsf=AAAAAFFfXzREVlRVXUR1WU8dAxFCHAFHQgYCbC5kaw--;did=abe.bd12>
        Contact: <sip:201@[peer-ip]:43017;rinstance=50924dd7a7927b2f;transport=UDP>
        To: <sip:201@[domain]>;tag=594df15d
        From: <sip:controller at kamailio.org>;tag=760f7752be879bf1a1346b149d21b85f-8c89
        Call-ID: 0b4f5d725846cc40-12109@[kamailio-ip]
        CSeq: 10 INVITE
        Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
        Content-Type: application/sdp
        Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri
        User-Agent: Z 3.0.19649 r19608
        Allow-Events: presence, kpml
        Content-Length: 157
<snip SDP>        


        ACK sip:201@[peer-ip]:43017;rinstance=50924dd7a7927b2f;transport=UDP SIP/2.0
        Via: SIP/2.0/UDP [kamailio-ip];branch=z9hG4bK9d54.ef433c83000000000000000000000000.0
        \0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00P\0xeeu\0x00\0x00\0x00\0x00\0x00$\0x12v\0x00\0x00\0x00\0x00\0x00\0xbb\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0xf0\0xf0\0xf0\0xf0\0x00\0x00\0x00\0x00\0x16\0x0075\0x13\0x01\0x00\0x00X\0xfc\0xc2Vk\0x7f\0x00\0x00\0x00\0xfd\0xc2Vk\0x7f\0x00\0x00\0x0a\0x00\0x00\0x00f-8c\0x0b\0xfd\0xc2Vomain\0x00<domain>\0x009 at 178X\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00\0x00To: <sip:201@[domain]>;tag=594df15d
        k\0x7f\0x00\0x00\0x17\0x00\0x00\0x00 ACK
        Route: <sip:[kamailio-ip];lr;ftag=760f7752be879bf1a1346b149d21b85f-8c89;vsf=AAAAAFFfXzREVlRVXUR1WU8dAxFCHAFHQgYCbC5kaw--;did=abe.bd12>
        User-Agent: kamailio
        Content-Length: 0


        REFER ...





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