Hi list,

I am having some issues parsing multipart INVITE [1] when calling force_rtp_proxy . I tried to upgrade to Kamailio 5 to see if maybe i was using too old code but seems not the case.

Log of error is:

Apr 3 18:31:21 mcptt /usr/sbin/kamailio[3232]: INFO: <script>: forcing RTP proxy for INVITE message

Apr 3 18:31:21 mcptt /usr/sbin/kamailio[3232]: ERROR: <core> [core/parser/parse_content.c:370]: decode_mime_type(): ERROR:decode_mime_type: parse error near in [application/vnd.3gpp.mcptt-info+xml] char[51][3] offset=16

So seems there is some issue using Content Type application/vnd.3gpp.mcptt-info+xml in a multipart SIP message

But this content type is accepted at following 3GPP spec: http://www.etsi.org/deliver/etsi_ts/129100_129199/129165/13.06.00_60/ts_129165v130600p.pdf

Checking implementation of parse_content.c I see ". - _ +" characters are accepted so i am not sure what is failing.

I did some test and if instead of that Content-Type: application/vnd.3gpp.mcptt-info+xml

i use Content-Type: application/mcptt no errors are seen in Kamailio logs and ports are replaced succesfully.

So do you see something wrong on what i am doing with attached info?

INVITE sip:mcpttparticipating@demo.net SIP/2.0

Record-Route: <sip:10.1.1.123:6074;transport=tcp;lr=on;ftag=i3b01a;nat=yes>

Call-ID: db6b10362447354bc9819df9a9046ecb@10.1.1.222

CSeq: 1 INVITE

From: <sip:blue1@demo.net>;tag=i3b01a

To: <sip:ccw@demo.net;poc-group=blues>

Via: SIP/2.0/TCP 10.1.1.123:6074;branch=z9hG4bK15a9.1c063dec40e772152f44c026a1627082.0;i=f

Via: SIP/2.0/TCP 10.1.1.222:5070;received=10.1.1.222;rport=55173;branch=z9hG4bK-363135-1750dc6e97437e4788f446f2d818b60a

Max-Forwards: 69

Contact: <sip:blue1@10.1.1.222:55173>;transport=tcp;+g.3gpp.mcptt;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mcptt";isfocus

Accept-Contact: *;+g.3gpp.mcptt;require;explicit

Accept-Contact: *;+g.3gpp.icsi-ref="urn:urn-7:3gpp-service.ims.icsi.mcptt";require;explicit

P-Preferred-Service: urn:urn-7:3gpp-service.ims.icsi.mcptt

P-Preferred-Identity: <sip:blue1@demo.net>

User-Agent: PoC-client/3GPP-Rel13 DemoClient/v2.03.01/BV6000/SDK23

Session-Expires: 3600

Min-SE: 90

Supported: replaces, 100rel, timer, norefersub, timer, answermode, eventlist

Resource-Priority: mcpttp.5

Content-Type: multipart/mixed;boundary=gnkboundary

Content-Length: 997

--gnkboundary

Content-Type: application/sdp

v=0

o=- 3626700268 3626700268 IN IP4 10.1.1.222

s=spimedia

c=IN IP4 10.1.1.222

t=0 0

a=X-nat:0

m=audio 10002 RTP/AVP 106

a=rtcp:10003 IN IP4 10.1.1.222

i=speech

a=rtpmap:106 AMR-WB/16000

a=fmtp:106 mode-change-period=1; mode-change-capability=2; mode-change-neighbor=0; max-red=0

a=sendrecv

a=ptime:100

a=maxptime:400

m=application 10003 udp MCPTT

a=fmtp:MCPTT mc_queueing;mc_priority=1

--gnkboundary

Content-Type: application/vnd.3gpp.mcptt-info+xml

<?xml version="1.0" encoding="UTF-8"?>

<mcptt-Params>

<session-type>chat</session-type>

<mcptt-request-uri type="Normal">

<mcpttURI>sip:ccw@demo.net;poc-group=blues</mcpttURI>

</mcptt-request-uri>

<mcptt-client-id type="Normal">

<mcpttURI>urn:uuid:00000000-0000-1000-8000-AABBCCDDEEFF</mcpttURI>

</mcptt-client-id>

</mcptt-Params>

</mcpttinfo>

--gnkboundary--

Thanks!
Albert