Description

When we send any custom header in the CANCEL Request.. same request is not forwarding to the down stream. Custom Header are missing in th request which is received by the downstream.

We are using t_relay() to forwards the request.

Please let me know if any parameters are required to be enabled for this issue.

Troubleshooting

Reproduction

Debugging Data

(paste your debugging data here)

Log Messages

(paste your log messages here)

SIP Traffic

Upstream CANCEL Request Sent

Session Initiation Protocol (CANCEL)
Request-Line: CANCEL sip:inbound@192.168.2.200:5060;transport=UDP SIP/2.0
Message Header
Via: SIP/2.0/UDP 192.168.2.192:8000;branch=z9hG4bK-25588-1-0
From: sip:inbound@192.168.2.192:8000;tag=1
To: sip:inbound@192.168.2.200:5060;user=phone
Call-ID: 1-25588@192.168.2.192
[Generated Call-ID: 1-25588@192.168.2.192]
CSeq: 1 CANCEL
Max-Forwards: 70
Session-ID: 357f74433c5454178cde3d5278b40ec6
User-Agent: A175 Collaboration Tablet
Content-Length: 0

Down Stream CANCEL Request received

Session Initiation Protocol (CANCEL)
Request-Line: CANCEL sip:inbound@192.168.2.200:5060;transport=UDP SIP/2.0
Message Header
From: sip:inbound@192.168.2.192:8000;tag=1
To: sip:inbound@192.168.2.200:5060;user=phone
Call-ID: 1-25588@192.168.2.192
[Generated Call-ID: 1-25588@192.168.2.192]
CSeq: 1 CANCEL
Via: SIP/2.0/UDP 192.168.1.200;branch=z9hG4bK561f.944ad825d740820aeb834f49c3cea1b7.0;rport
Max-Forwards: 69
Content-Length: 0

(paste your sip traffic here)

Possible Solutions

Additional Information

Kamailio Version - output of kamailio -v

(paste your output here)

Operating System:

(paste your output here)

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