[SR-Users] getting source IP from Contact header

[Ali Taher]

Hello everyone,

 

I'm trying to get the host part from the contact header in the sip invite
packet.

 

Following is the contact header format:

Contact: <sip:user_name at 192.168.1.1:5060>

 

What I want as result is 192.168.1.1

 

I searched among the pseudovairables  and found $ct variable which reference
to the body of contact header. (<sip:user_name at 192.168.1.1:5060>)

 

Is there a way to get directly the host (192.168.1.1) without applying
transformation at the level of $ct.

If not what transformation can achieve it.

 

Thanks in advance.

 

Regards,

Ali

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