[pjsip] Passing SIP through TURN

Benny Prijono bennylp at teluu.com
Thu Jun 7 04:55:49 EDT 2012

On Thu, Jun 7, 2012 at 9:55 AM, Guilherme Balena Versiani
<guibv at nymgo.com>wrote:

> Hello Benny,
> As I don't have much time to be checking the PJSIP code to make a patch,
> I've used another approach:
> -- Instead of having two transports, disconnect UDP and then connect the
> TURN one, I've created an "special" TURN transport that contains a UDP
> transport inside. This is like "inheriting" the UDP transport, in some way.
> -- It has an additional function, and by calling it I open the TURN and
> this special transport redirects the SIP traffic through the TURN server.
> I think this would be a "safer" way, as it is not usual for PJSIP
> applications to be registering/unregistering transports during the normal
> execution of the program.
Okay. I'm curious though, why do you need to use TURN to get pass firewall?
Can't you just hide it with TLS and some non-standard port?

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