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Id: 133024
Status: new
Priority: 0/
Queue: Net-SIP
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Owner: Nobody in particular
Requestors: richard [...] carver.me.uk
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  Sun Jul 19 05:43:26 2020 richard [...] carver.me.uk - Ticket created
Subject: ACK for 200 does not change branch in VIA
Date: Sun, 19 Jul 2020 09:43:13 +0000
To: "bug-Net-SIP [...] rt.cpan.org" <bug-Net-SIP [...] rt.cpan.org>
From: Richard Carver <richard [...] carver.me.uk>
Net::SIP::Request create_ack copies the Via header from the request and does not modify it. This is in violation for the RFC when the ACK is for a 2xx response. https://tools.ietf.org/html/rfc3261#section-8.1.1.7 "The branch parameter value MUST be unique across space and time for all requests sent by the UA. The exceptions to this rule are CANCEL and ACK for non-2xx responses."