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Re: [tor-talk] Why tor doesn't support UDP?

> It is well known that tor only supports DNS UDP requests, and not
> other UDP.
> Tor could relay UDP through the same path as TCP. And the chosen exit
> node could act as a UDP gateway, much like regular routers relay UDP
> packets from different LAN hosts. Routers substitute source port of
> UDP packets and later map back the ip/port in response packets. It
> could be easily imagined how tor could do just the same.
> When I use the virtual machine connected to network through the tor,
> only http apps work, and all UDP apps fail. Even skype is unable to
> connect.
> So what is the reason that UDP isn't supported?

There are many reasons. I guess patches would be happily discussed if
you had some. SOCKS5 supports UDP, TransPort could be made to support
UDP too. Then there's circuit handling and session trackingÂâ the
connection is never opened or closed with UDP.

But then, the underlying connections between relays are still going to
be TCP. Previous research on switching to datagram designs:

Lunar                                             <lunar@xxxxxxxxxxxxxx>

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