RE: UDP Question

  • From: TRadtke@xxxxxxxxxxxx
  • To: isalist@xxxxxxxxxxxxx
  • Date: Fri, 11 Feb 2005 09:01:50 -0600

So Jim, you'd use TCP for streaming video?  I'd call that time sensitive,
and if the packet is out of sequence, it's useless.  No need for TCP there.

How about online gaming?  WoW, M59, etc, they all use UDP for data
transmission.  Time sensitive.  Didn't get it soon enough?  Why bother
processing something that you don't even need to know about.  Why use TCP to
reconstruct the packet sequence when it's pointless.  It wastes CPU cycles
and network card buffers to hold out of sequence packets.

PCAnywhere uses UDP for data stream for the remote desktop.  Time sensitive?
Yes.  Why in the hell would I want to see my mouse jump around the screen
doing things that I did a few seconds ago?

If you even bothered to understand what I wrote, you'd see that you even
agreed with me that it's non-guaranteed delivery.  Data that either is there
or useless to me IS time sensitive.  Just because your definition of time
sensitive is different than mine does not make my fist post any less valid
that your post.

-----Original Message-----
From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx] 
Sent: Thursday, February 10, 2005 4:11 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: UDP Question

Some reading on basic TCP/IP is clearly in order...

"UDP is normally used for time sensitive information"?!?  Where did you
get this?  UDP in and of itself provides no delivery guarantees
whatsoever.
-----Original Message-----
From: TRadtke@xxxxxxxxxxxx [mailto:TRadtke@xxxxxxxxxxxx] 
Sent: Thursday, February 10, 2005 1:41 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: UDP Question

http://www.ISAserver.org

Well, UDP is normally used for time sensitive information.  UDP delivery
is not guarantied at all.  Most of the time it's used both ways if it's
being used since if I'm not getting your traffic, it really won't matter
if your not getting mine.  For example, live video streams.



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