Re: Re-connecting

On Friday 11 February 2005 21:55, Mark Slicker wrote:
> On Fri, 11 Feb 2005, John Drake wrote:
> >> pop3 is tcp
> >>
> >> http://www.faqs.org/rfcs/rfc1939.html
> >
> > Pop 3 can run on tcp or udp.
>
> The RFC is pretty informal, it doesn't explicitly require TCP, however the
> only description of its operation is based on TCP connections.
>
> Mark

rfc1939.3. Basic Operation

   Initially, the server host starts the POP3 service by listening on
   TCP port 110.

How much more explicit do you want it.  Plus the fact that pop3 is set to 
listen on tcp 110 when you configure you mail servers, not udp.

But anyway, have it your own way.  You can try talking to mail servers on port 
25 udp if you wish, or time servers on port 123 tcp and pretty much breach 
every other RFC for connecting to systems by flipping between tcp and udp and 
vice versa.  I think you will find the results unsatisfactory.

But it's a free world.  Go ahead and enjoy yourselves.  I would have thought 
it would be more productive to google pop3, smtp or whatever service you are 
planning to write for, find the relevant RFC, find out the port/s and 
requirements to ensure inter-operability ie. connect correctly, give the 
correct codes and transfer data correctly instead of tilting at windmills.

There are 65,355 ports, all of which have tcp and udp.  It's the RFC's that 
set the standard for mutual communication.  Ignore them at your peril.

Anyway, I'm tired of this silliness.  I've been around computers for 28-years 
and the internet for 20/21years and running servers for over 10-years.  I 
know most of the RFC's pretty well and can quote significant sections of the 
email and DNS One's from memory.
It's time to unsubscribe from these Forth lists.  Time moves on and they hold 
no interest anymore.