[Nel] TCP vs. UDP

Thu, 05 Jul 2001 11:14:47 -0400

Vianney Lecroart wrote:
+> 
+> Hi everybody!
+> 
+> Let's talk a little bit about this great subject: TCP vs. UDP
+> 
+> Thanks to Valerio Santinelli and Olivier Lejade, there's some cool
+> discussion about this subject on the web and I would like to have your
+> thought and discuss about this.
+> 
+> On Anarchy Online game, they only use TCP protocol between client and server
+> (other commercial online game use UDP) and it seems that it causes lot of
+> problem like horrible ping or connection lost:
+> http://aoforums.funcom.com/showthread.php?threadid=26297
+> 
+> There's also a mail on the MUD-Dev mailing list talking about these problems
+> here:
+> https://www.kanga.nu/archives/MUD-Dev-L/2001Q3/msg00009.php
+> 
+> As you perhaps know, we only use TCP/IP (for server-server communication,
+> but also for the client-server connection) and we currently think more and
+> more about replacing the TCP client-server connection with a UDP one.
+> 
+> In a first step, we would like to know your opinion about this choice. And
+> in a next step, we'll do some test about ping/packet lost and so on to
+> compare TCP and UDP, and we'll need your help to do that.
+> 
+> Vianney Lecroart
+
+There's often a lot of lag at the beginning of a UDP "connection" (yes,
+I know UDP doesn't have those).  Then gateways, which consider UDP to
+have higher priority, remember that there's a connection, and things
+start going faster.  Your tests should be written with this in mind.  
+
+You might also want to look into XUDP, 
+http://www.gweep.net/~rocko/XUDP_Paper/paper.html
+
+
+-- 
+-[Dave Turner                              Stalk me:  (215)-545-2859]
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