Re: [OpenSIPS-Users] Fragmentation issue

[Bogdan-Andrei Iancu]

Your original post made it to the list :
http://lists.opensips.org/pipermail/users/2016-January/033542.html

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 24.01.2016 01:35, Jai Rangi wrote:
My Previous message got high jacked due to Subject. Posting is again 
as a new thread.


Hello,

I have two opensip servers, exactly same configuration, but one is acting
different. This is the call  flow.
Origination -- Invite> Opensips
Origination < 100 Trying -- Opensips
  ---Opensips invite --> End user
(freeswitch)
Opensips <--- 100 trying --
Freeswitch
Opensips <-- 183 Ringing --
Freeswitch
Keeps waiting and never forward 183 back to Origination.

While 2nd opensips works just fine/

MTU is 1500 on both.
Working Server versions
Centos 5.2, Openisps 11-2

Not working, version (Different OS, same version of Opensips)
Cent OS 5.4, Opensips 11-2

Below is the full trace. Any hint to fix this will big help. I am
suspecting fragmented packet size in 183 Session Progress, but not sure how
to fix it. If the packet is not fragmented all works fine.

Did some more testing, if I route the call to another IP, that works fine. So 
something very specific to this IP only.

This is original trace, ALL IPs has been modified for security.

  15.43.72.36:5060   ->29.16.115.170:5060 

INVITE sip:+130 at domain.opensips.company.com 
:5060;user=phone;transport=UDP;maddr=29.16.115.170

SIP/2.0.
v: SIP/2.0/UDP15.43.72.36:5060 
;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16.
Record-Route: .
Remote-Party-ID: 
>/;screen=yes;party=calling;privacy=off. /f: :5060

;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef.
t: :5060;user=phone>.

i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406.
CSeq: 1 INVITE.
Allow: ACK,BYE,CANCEL,INVITE,OPTIONS,INFO,SUBSCRIBE,REFER,NOTIFY,PRACK.
v: SIP/2.0/UDP52.88.1.5:5060 
;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5.
v: SIP/2.0/UDP
IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24.
Max-Forwards: 15.
m: .
k: 100rel, resource-priority, replaces.
c: application/sdp.
l: 235.
Record-Route: .
.
v=0.
o=PVG 1453494628460 1453494628460 IN IP4 199.173.133.17.
s=-.
p=+1 613555.
c=IN IP4 199.173.133.17.
t=0 0.
m=audio 34552 RTP/AVP 18 0 8 101.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=ptime:20.
a=fmtp:18 annexb=no.

#
U29.16.115.170:5060   ->15.43.72.36:5060 

SIP/2.0 100 Giving a try.
v: SIP/2.0/UDP15.43.72.36:5060 
;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16.
f: :5060

;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef.
t: :5060;user=phone>.

i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406.
CSeq: 1 INVITE.
v: SIP/2.0/UDP52.88.1.5:5060 
;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5.
v: SIP/2.0/UDP
IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24.
Server: Opensips SIP Gateway.
Content-Length: 0.
.

#
U29.16.115.170:5060   ->28.3.8.20:5060 

INVITE sip:130 at 28.3.8.20 
:5060;user=phone;transport=UDP SIP/2.0.

Record-Route:
.
Via: SIP/2.0/UDP 29.16.115.170:5060;branch=z9hG4bK3a79.ead0d7c5.0.
v: SIP/2.0/UDP15.43.72.36:5060 
;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16.
Record-Route: .
Remote-Party-ID: 
>/;screen=yes;party=calling;privacy=off. /f: :5060

;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef.
t: :5060;user=phone>.

i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406.
CSeq: 1 INVITE.
Allow: 

[OpenSIPS-Users] Fragmentation issue

[Jai Rangi]

My Previous message got high jacked due to Subject. Posting is again as a
new thread.

Hello,

I have two opensip servers, exactly same configuration, but one is acting
different. This is the call  flow.
Origination -- Invite> Opensips
Origination < 100 Trying -- Opensips
 ---Opensips invite --> End user
(freeswitch)
Opensips <--- 100 trying --
Freeswitch
Opensips <-- 183 Ringing --
Freeswitch
Keeps waiting and never forward 183 back to Origination.

While 2nd opensips works just fine/

MTU is 1500 on both.
Working Server versions
Centos 5.2, Openisps 11-2

Not working, version (Different OS, same version of Opensips)
Cent OS 5.4, Opensips 11-2

Below is the full trace. Any hint to fix this will big help. I am
suspecting fragmented packet size in 183 Session Progress, but not sure how
to fix it. If the packet is not fragmented all works fine.
Did some more testing, if I route the call to another IP, that works
fine. So something very specific to this IP only.

This is original trace, ALL IPs has been modified for security.

 15.43.72.36:5060 -> 29.16.115.170:5060
INVITE sip:+130 at domain.opensips.company.com
:5060;user=phone;transport=UDP;maddr=29.16.115.170
SIP/2.0.
v: SIP/2.0/UDP 15.43.72.36:5060
;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16.
Record-Route: .
Remote-Party-ID: 
>*;screen=yes;party=calling;privacy=off.
*f: :5060
;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef.
t: :5060;user=phone>.
i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406.
CSeq: 1 INVITE.
Allow: ACK,BYE,CANCEL,INVITE,OPTIONS,INFO,SUBSCRIBE,REFER,NOTIFY,PRACK.
v: SIP/2.0/UDP 52.88.1.5:5060
;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5.
v: SIP/2.0/UDP
IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24.
Max-Forwards: 15.
m: .
k: 100rel, resource-priority, replaces.
c: application/sdp.
l: 235.
Record-Route: .
.
v=0.
o=PVG 1453494628460 1453494628460 IN IP4 199.173.133.17.
s=-.
p=+1 613555.
c=IN IP4 199.173.133.17.
t=0 0.
m=audio 34552 RTP/AVP 18 0 8 101.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=ptime:20.
a=fmtp:18 annexb=no.

#
U 29.16.115.170:5060 -> 15.43.72.36:5060
SIP/2.0 100 Giving a try.
v: SIP/2.0/UDP 15.43.72.36:5060
;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16.
f: :5060
;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef.
t: :5060;user=phone>.
i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406.
CSeq: 1 INVITE.
v: SIP/2.0/UDP 52.88.1.5:5060
;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5.
v: SIP/2.0/UDP
IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24.
Server: Opensips SIP Gateway.
Content-Length: 0.
.

#
U 29.16.115.170:5060 -> 28.3.8.20:5060
INVITE sip:130 at 28.3.8.20
:5060;user=phone;transport=UDP
SIP/2.0.
Record-Route:
.
Via: SIP/2.0/UDP 29.16.115.170:5060;branch=z9hG4bK3a79.ead0d7c5.0.
v: SIP/2.0/UDP 15.43.72.36:5060
;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16.
Record-Route: .
Remote-Party-ID: 
>*;screen=yes;party=calling;privacy=off.
*f: :5060
;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef.
t: :5060;user=phone>.
i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406.
CSeq: 1 INVITE.
Allow: ACK,BYE,CANCEL,INVITE,OPTIONS,INFO,SUBSCRIBE,REFER,NOTIFY,PRACK.
v: SIP/2.0/UDP 52.88.1.5:5060
;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5.
v: SIP/2.0/UDP
IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24.
Max-Forwards: 14.
m: .
k: 100rel, resource-priority, replaces.
c: application/sdp.
l: 235.
Record-Route: .
.
v=0.
o=PVG 1453494628460 1453494628460 IN IP4 199.173.133.17.
s=-.
p=+1 613555.
c=IN IP4 199.173.133.17.
t=0 0.
m=audio 34552 RTP/AVP