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Re: tun2udp


On Fri, 14 Jun 2013 09:17:49 +0800,
宋鑫 <songxinwest@xxxxxxxxx> wrote:

> Yes, I know what you mean,but my question is about this:
> > For outcoming traffic :
> > 1/ read on TUN interface: you get one IP/UDP/RTP packet
> if I create a TUN,  how to send a packet to a TUN with my
> application?

Send it as usual.

> For example, if my application create a RTP packet,
> without ROHC, I only need to use "sendto" to send this packet, but
> with ROHC, first I need to complete the RTP packet with IP/UDP
> header, then send this IP/UDP/RTP packet to TUN.

No, you don't need extra work. Use sendto as usual. That's why any stock
VoIP application will work without any change.

See https://en.wikipedia.org/wiki/TUN/TAP


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