[REBOL] Re: Opening Specific Ports
From: mattsmac::hotmail at: 11-Nov-2003 8:10
No, basically, if you have a server running, say on port 8000 and you
connect to it via a client the client will connect on a random local port to
that remote port. Doing a probe on the connection verifies this. What I
want to do is have the client connect via a specified port, so that if you
do a probe on the client connection it will look something like:
local-ip: <client's IP Address>
remote-ip: <server's IP Address>
local-port: 9000
remote-port: 8000
So that I can have some control on how the client connects to the server
Matt
------------------------------------------------------
Hi Matt,
first off I have to say I am not a network pro by any means,
but what I think I hear you saying you want to do,
sounds alot like the FTP protocal.
server listens
client connects ;this will be the control port
client opens local "Port Of Choose" ; say 8005
client sends server the "Port Of Choose" number
server connects to client:8005
server inserts whatever into client:POC
client is happy
On Mon, 10 Nov 2003, Matt MacDonald wrote:
>I realize this, but I still need to know how to do it. I can handle any
>conflicts that arise, I just need to know the code to make it happen.
>
>Matt
>-------------
>
>On Mon, 10 Nov 2003, Matt MacDonald wrote:
>
> >
> >Anybody else have any thoughts on this? Or is this an impossibility?
> >
> >Matt
>
>I will not claim impossibile, but can gaurentee it could not work in
>some cases. specificaly when the client is already using the port you
>specify.
>
> >
> >
> > >From: "Matt MacDonald" <[mattsmac--hotmail--com]>
> > >Reply-To: [rebol-list--rebol--com]
> > >To: [rebol-list--rebol--com]
> > >Subject: [REBOL] Re: Opening Specific Ports
> > >Date: Mon, 10 Nov 2003 09:35:47 -0500
> > >
> > >
> > >I understand how to do that, but what I want to do is have the client
> > >computer connect to a server port (in your case 9005) and also control
> >what
> > >port the client uses to make that connection. For instance say
>something
> > >like:
> > >
> > >server:
> > >l: open tcp://:9005
> > >s: first l
> > >
> > >client:
> > >c: open tcp://:(ip-address):9005 on 8005
> > >
> > >So that I know that the client computer will always be opening port
>8005
> >to
> > >connect to port 9005 on the server.
> > >
> > >Matt
> > >
> > >--------------------------------------------------------
> > >
> > >Matt MacDonald wrote:
> > >
> > > >How can I control what port (on the client side) gets opened when
> > > >connecting to a TCP server? I know you can control which port on the
> > > >server it connects to, but not where it connects from.
> > > >
> > > >Matt
> > > >
> > > >
> > > >
> > > >
> > >console 1:
> > >
> > >server: open tcp://:9005
> > >conn: first wait server
> > >
> > >console 2:
> > >client: open tcp://172.0.0.1:9005
> > >probe client
> > >
> > >watch for following object words:
> > > local-port: 1786
> > > remote-port: 9005
> > >
> > >HTH,
> > >-pekr-
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