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Simple UDP question?

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Vieux 30/09/2006, 18h01   #1
smerf
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Par défaut Simple UDP question?

Ok, I admit it - I am desperate.

I have searched high and low (and even in some places I'd like to forget I
ever saw) for the information that will tell me exactly how the Nat2Nat
server for UltraVNC works (not just a vague diagram, but the code needed -
at least psuedocode - to connect the 2 clients) . (You can see it at
http://www.uvnc.com/addons/nat2nat.html.)

I get the diagram and all, but how exactly would you get 2 UDP connections
to your UDP server to start talking to each other instead of the server?

As I see it, the whole reason for the Nat2Nat server is to get 2 PCs that
can only make ooutgoing connections (because they are behind NATs) to
connect directly. If they have already connected to the UDP server and
cannot accept incoming connections, how do you get them connected directly
to each other and drop the Nat2Nat server from the loop?

What's the trick to this? Does anybody know?



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Vieux 01/10/2006, 08h59   #2
Arkady Frenkel
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Par défaut Re: Simple UDP question?

Search this NG for "hole punching" and you'll find some links for code

Arkady

"smerf" <smerf@shroom.com> wrote in message
newspxTg.15860$vi3.7402@bignews3.bellsouth.net.. .
> Ok, I admit it - I am desperate.
>
> I have searched high and low (and even in some places I'd like to forget I
> ever saw) for the information that will tell me exactly how the Nat2Nat
> server for UltraVNC works (not just a vague diagram, but the code needed -
> at least psuedocode - to connect the 2 clients) . (You can see it at
> http://www.uvnc.com/addons/nat2nat.html.)
>
> I get the diagram and all, but how exactly would you get 2 UDP connections
> to your UDP server to start talking to each other instead of the server?
>
> As I see it, the whole reason for the Nat2Nat server is to get 2 PCs that
> can only make ooutgoing connections (because they are behind NATs) to
> connect directly. If they have already connected to the UDP server and
> cannot accept incoming connections, how do you get them connected directly
> to each other and drop the Nat2Nat server from the loop?
>
> What's the trick to this? Does anybody know?
>
>
>



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Vieux 01/10/2006, 09h30   #3
smerf
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Hébergeur:
Par défaut Re: Simple UDP question?

Sweet! Thanks!


"Arkady Frenkel" <arkadyf@hotmailxdotx.com> wrote in message
news:ejhrU9S5GHA.508@TK2MSFTNGP06.phx.gbl...
> Search this NG for "hole punching" and you'll find some links for code
>
> Arkady
>
> "smerf" <smerf@shroom.com> wrote in message
> newspxTg.15860$vi3.7402@bignews3.bellsouth.net.. .
>> Ok, I admit it - I am desperate.
>>
>> I have searched high and low (and even in some places I'd like to forget
>> I
>> ever saw) for the information that will tell me exactly how the Nat2Nat
>> server for UltraVNC works (not just a vague diagram, but the code
>> needed -
>> at least psuedocode - to connect the 2 clients) . (You can see it at
>> http://www.uvnc.com/addons/nat2nat.html.)
>>
>> I get the diagram and all, but how exactly would you get 2 UDP
>> connections
>> to your UDP server to start talking to each other instead of the server?
>>
>> As I see it, the whole reason for the Nat2Nat server is to get 2 PCs that
>> can only make ooutgoing connections (because they are behind NATs) to
>> connect directly. If they have already connected to the UDP server and
>> cannot accept incoming connections, how do you get them connected
>> directly
>> to each other and drop the Nat2Nat server from the loop?
>>
>> What's the trick to this? Does anybody know?
>>
>>
>>

>
>



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