[Spce-user] Missing Max-Forwards Header

Wed Jan 8 15:20:24 EST 2014

Good afternoon Larry, take a look in your /etc/ngcp-config/config.yml
file around line 60 +

You should have something like this:   max_forwards=70

kamailio:

  lb:

    b2buas:

      - sip\:127.0.0.1\:5080

    extra_sockets: ~

    max_forwards: 70

    pkg_mem: 16

    port: 5060

    proxies:

      - sip\:127.0.0.1\:5062

See if that will do away with the error.  I do see in your example below
in RED Max-Forwards: 70 but lets verify the config.yml

I should also mention my information is related to 2.8

Kevin

From: spce-user-bounces at lists.sipwise.com
[mailto:spce-user-bounces at lists.sipwise.com] On Behalf Of Schaefer,
Larry
Sent: Wednesday, January 08, 2014 2:22 PM
To: spce-user at lists.sipwise.com
Subject: [Spce-user] Missing Max-Forwards Header

Hello... I am just getting started using SEMS with SBC application.  I
am seeing an issue where after I hang up a call, the BYE being sent to
my SIP application server does not contain a Max-Forwards header.  This
causes my SIP stack throw the following error:  "Missing a required
header : Max-Forwards".

The BYE message going into the SBC has an Max-Forwards, but when it
leaves the SBC, it does not.  The logs below are from the sems.log file
that show the messages I am seeing.  The final message is the one that I
am having an issue with.

Original Invite to SBC:

Jan  8 19:08:13 sipwise sems[12819]: [#7fe230676700] [run,
udp_trsp.cpp:213] DEBUG: vv M [|] u recvd msg via UDP
vv#012--++--#012INVITE sip:17193860006 at 10.81.224.232 SIP/2.0#015#012Via:
SIP/2.0/UDP
10.2.62.78:44912;branch=z9hG4bK-d8754z-4058c4102839a274-1---d8754z-;rpor
t#015#012Max-Forwards: 70#015#012Contact:
<sip:3333 at 10.2.62.78:44912>#015#012To:
"100"<sip:17193860006 at 10.81.224.232>#015#012From:
"3333"<sip:3333 at 10.2.62.78>;tag=d6147351#015#012Call-ID:
MjNhZDViYTRmZTdiNWQwODc1NGU4MGU5YTQwOTllZTE.#015#012CSeq: 1
INVITE#015#012Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY,
MESSAGE, SUBSCRIBE, INFO#015#012Content-Type:
application/sdp#015#012User-Agent: eyeBeam release 1105z stamp
59031#015#012Content-Length: 180#015#012#015#012v=0#015#012o=- 9 2 IN
IP4 10.2.62.78#015#012s=CounterPath eyeBeam 1.5#015#012c=IN IP4
10.2.62.78#015#012t=0 0#015#012m=audio 55426 RTP/AVP 0
101#015#012a=fmtp:101 0-15#015#012a=rtpmap:101
telephone-event/8000#015#012a=sendrecv#015#012--++--

New Invite from SBC to my SIP Server:

Jan  8 19:08:13 sipwise sems[12819]: [#7fe231c8c700] [send,
transport.cpp:98] DEBUG: send  msg#012--++--#012INVITE
sip:17193860006 at 10.81.224.232 SIP/2.0#015#012Via: SIP/2.0/UDP
10.81.224.232;branch=z9hG4bKCSNunal9;rport#015#012From: "3333"
<sip:3333 at 10.2.62.78>;tag=3221B159-52CDA21D000EE81D-31D8D700#015#012To:
"100"<sip:17193860006 at 10.81.224.232>#015#012CSeq: 10
INVITE#015#012Call-ID:
MjNhZDViYTRmZTdiNWQwODc1NGU4MGU5YTQwOTllZTE._leg2#015#012Contact:
<sip:10.81.224.232:5060>#015#012Max-Forwards: 70#015#012Allow: INVITE,
ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE,
INFO#015#012User-Agent: eyeBeam release 1105z stamp
59031#015#012P-Source-IP: 10.2.62.78#015#012P-Source-Port:
44912#015#012Content-Type: application/sdp#015#012Content-Length:
166#015#012#015#012v=0#015#012o=- 9 2 IN IP4
10.2.62.78#015#012s=CounterPath eyeBeam 1.5#015#012c=IN IP4
10.81.224.232#015#012t=0 0#015#012m=audio 40002 RTP/AVP 0
101#015#012a=rtpmap:101
telephone-event/8000#015#012a=sendrecv#015#012--++--

Bye sent to SBC:

Jan  8 19:08:18 sipwise sems[12819]: [#7fe230676700] [run,
udp_trsp.cpp:213] DEBUG: vv M [|] u recvd msg via UDP
vv#012--++--#012BYE sip:17193860006 at 10.81.224.232:5060
SIP/2.0#015#012Via: SIP/2.0/UDP
10.2.62.78:44912;branch=z9hG4bK-d8754z-7b597f277435f31e-1---d8754z-;rpor
t#015#012Max-Forwards: 70#015#012Contact:
<sip:3333 at 10.2.62.78:44912>#015#012To:
"100"<sip:17193860006 at 10.81.224.232>;tag=7E3767AC-52CDA21D000EE063-30676
700#015#012From:
"3333"<sip:3333 at 10.2.62.78>;tag=d6147351#015#012Call-ID:
MjNhZDViYTRmZTdiNWQwODc1NGU4MGU5YTQwOTllZTE.#015#012CSeq: 2
BYE#015#012User-Agent: eyeBeam release 1105z stamp 59031#015#012Reason:
SIP;description="User Hung Up"#015#012Content-Length:
0#015#012#015#012--++--

Bye sent to my SIP server (no Max-Forwards header):

Jan  8 19:08:18 sipwise sems[12819]: [#7fe231c8c700] [send,
transport.cpp:98] DEBUG: send  msg#012--++--#012BYE
sip:17193860006 at 10.2.62.78 SIP/2.0#015#012Via: SIP/2.0/UDP
10.81.224.232;branch=z9hG4bKBQ3b.aXk;rport#015#012From: "3333"
<sip:3333 at 10.2.62.78>;tag=3221B159-52CDA21D000EE81D-31D8D700#015#012To:
"100"<sip:17193860006 at 10.81.224.232>;tag=367319031#015#012CSeq: 11
BYE#015#012Call-ID:
MjNhZDViYTRmZTdiNWQwODc1NGU4MGU5YTQwOTllZTE._leg2#015#012Content-Length:
0#015#012#015#012--++--

Is there anything I am doing wrong?  I have been searching, but not
found any settings that seem to deal with Max-Forwards.

Thanks,

Larry Schaefer

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