Re: TCP/IP Port Forwarding + Patch

[Andreas Schneider <asn@xxxxxxxxxxxxxx>]

On Saturday 11 January 2014 10:04:48 Dustin Oprea wrote:
> I would ask that the documentation be updated. I suggest writing the text,
> and then Andreas might consider adding/replacing it.

Yes, the tutorial should be updated too.

> Dustin
> On Jan 11, 2014 6:10 AM, "Oleksandr Shneyder" <o.shneyder@xxxxxxxxxxxxx>
> 
> wrote:
> > Hello Andreas,
> > patch generated by "git format-patch -M origin/master" is attached.
> > 
> > regards,
> > Alex
> > 
> > Am 10.01.2014 19:54, schrieb Andreas Schneider:
> > > On Friday 10 January 2014 17:50:24 Oleksandr Shneyder wrote:
> > >> Hello,
> > >> here is a patch to fix problem with port forwarding.
> > > 
> > > Hi,
> > > 
> > > that's great. Thank you very much for your contribution.
> > > 
> > > Could you create a patch for master and send a git format-patch?
> > > 
> > > It is described under "Public Large Project" here:
> > > 
> > > http://www.git-scm.com/book/en/Distributed-Git-Contributing-to-a-Project
> > > 
> > > 
> > > Please name the function ssh_channel_accept_forward()
> > > 
> > > 
> > > Thanks!
> > > 
> > >> Problem description:
> > >> 
> > >> //forward port 9080
> > >> ssh_forward_listen(session, NULL, 9080, NULL);
> > >> //forward port 9090
> > >> ssh_forward_listen(session, NULL, 9090, NULL);
> > >> //accept connections
> > >> while(1){
> > >> ssh_channel channel = ssh_forward_accept(session, 1000);
> > >> //channel created, but we don't know if it from port 9080 or 9090 !!!
> > >> }
> > >> 
> > >> Solution - use function, that return destination port (see patch)
> > >> 
> > >> //forward port 9080
> > >> ssh_forward_listen(session, NULL, 9080, NULL);
> > >> //forward port 9090
> > >> ssh_forward_listen(session, NULL, 9090, NULL);
> > >> //accept connections
> > >> while(1){
> > >> int port;
> > >> ssh_channel channel = ssh_forward_accept_ex(session, 1000, &port);
> > >> fprintf(stderr, "forwarding channel from port %d\n", port);
> > >> }
> > >> 
> > >> As we need multiply port forwarding in our project (X2Go), please
> > >> accept
> > >> my patch or suggest your own solution to solve this problem. We will
> > >> take care about patching old versions of libssh used by Debian and
> > >> possible other Linux distributions.
> > >> 
> > >> regards,
> > >> Alex
> > 
> > --
> > ----------------------------------------------------
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> > 
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> > 
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> > ----------------------------------------------------

-- 
Andreas Schneider                   GPG-ID: CC014E3D
www.cryptomilk.org                asn@xxxxxxxxxxxxxx