ACK for 200 does not change branch in VIA

[noxxi]

Migrated from rt.cpan.org #133024 (status was 'new')

Requestors:

• [email protected]

From [email protected] on 2020-07-19 09:43:26
:

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."