Outbound port on sockets

Grant Edwards grante at visi.com
Fri Sep 15 16:41:26 CEST 2006

On 2006-09-15, Diez B. Roggisch <deets at nospam.web.de> wrote:

>>>> Is it possible to specify which port to use as the outbound port on a
>>>> connection? 
>> [...]
>>>> Specifically, I'm trying to write an FTP host, and I'm trying to
>>>> implement the PORT command. 
>>> AFAIK you neither can't do that nor need it.
>> It's not the issue here, but to specify the outgoing port
>> call bind(('', portnum)) before connect().
> I wasn't aware of that. Cool.

It's an interesting thing to know, but I've been doing TCP
stuff for many years and never run across a situation where
it's something I needed to do.  If somebody in this thread
actually does need to do it, I'd be curious bout why...

Grant Edwards                   grante             Yow!  .. this must be what
                                  at               it's like to be a COLLEGE
                               visi.com            GRADUATE!!

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