Iñaki Baz Castillo schrieb:
El Lunes, 9 de Noviembre de 2009, Juha Heinanen escribió:
Iñaki Baz Castillo writes:
> There is a problem here as Record-Route are not needed for in-dialog
> request (the proxy can add it but the UAS should ignore it as RR just
> makes sense in the initial request and response forming the dialog).
yes, i meant that the rr test would only be used on initial request.
> What about calling alias_contact() just in case nat_test() detects the
> following two requeriments:
>
> 1) The IP in Contact is private.
> 2) There is no ";alias" param in Contact URI.
>
> Of course a new nat_test flag would be needed for point 2.
i can add test (2) to alias_contact() function itself. but (1) is not
enough, since alias_contact() definitely needs to be called also when
request arrives over tcp.
If proxy B receives a TCP request from proxy A, why should proxy B call
alias_contact()?
True. We do not have keep-alive mechanisms between proxies, thus it
might happen that the TCP connection will be closed and the port in the
alias is not useable anymore.
That's also a reason why IMO there should it should be possible to use
the alias function without auto-magic, and implement the usage rules in
the script. And once we have found the proper usage rules, implement
them and activate them using a certain flag/parameter.
regards
klaus
Note that in-dialog request from proxy B to proxy A would be sent using route
set mechanism.
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