[OpenSIPS-Devel] [ opensips-Feature Requests-3032338 ] expose number of Via headers

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Feature Requests item #3032338, was opened at 2010-07-20 16:25
Message generated for change (Tracker Item Submitted) made by kennardwhite
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Category: modules
Group: trunk
Status: Open
Priority: 5
Private: No
Submitted By: Kennard White (kennardwhite)
Assigned to: Nobody/Anonymous (nobody)
Summary: expose number of Via headers

Initial Comment:
Need script variable/method that provides the number of Via headers in the request. Some NAT-related processing should only occur when the proxy is the first "edge" proxy. This can be determined when the number of via headers is exactly 1. Note that counting Via lines isn't simple because Via lines can be merged into a single line (comma separated).

The goal would be to write something like:
   if ( num-of-Via==1 && is_method("SUBSCRIBE|REGISTER|INVITE") && nac_uac_test("23") ) { fix_nated_contact() }

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=1086413&aid=3032338&group_id=232389