[SR-Users] subst_hf to rewrite a contact header

[Alex Balashov]

The real question is, why are you rewriting a Contact header? :-) That
might be what you're really doing wrong ...

On Mon, Sep 24, 2018 at 05:54:04PM +0100, Ben Hood wrote:

> Hi,
> 
> I’m wondering how to use subst_hf() properly.
> 
> I’m trying to debug a broken flow by manually rewriting the contact header from
> 
> Contact: <sip:b73c6f29-0101-4802-afcd-efb63f1e6d8f at 10.10.10.12:5090;transport=udp>
> 
> to
> 
> Contact: <sip:2018092417381900003 at 81.x.x.x>
> 
> by using
> 
> $var(ctct) = "<sip:2018092417381900003 at 81.x.x.x>";
> subst_hf("Contact", “/\<.+\>/$var(ctct)\r\n/", "a”);
> 
> but the result is
> 
> Contact: <sip:2018092417381900003 at 81.x.x.x>
> sip:b73c6f29-0101-4802-afcd-efb63f1e6d8f at 10.10.10.12:5090;transport=udp
> 
> Testing the regex with an external tool appears to match all of the original header, so I’m wondering why subst_hf doesn’t appear to rewrite the entire header.
> 
> Is there something I’m doing wrong?
> 
> TIA,
> 
> Ben
> 
> 
> 
> 
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-- 
Alex Balashov | Principal | Evariste Systems LLC

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