Entry

what is diffrnt between TCP & UDP

Aug 31st, 2005 19:16
Jason Ross, Chunnu pandya,

While I'm by no means an expert in this area, I'll take a brief stab at
this one.

The biggest difference between TCP and UDP is that TCP has in the
protocol definition a mechanism to ensure the integrity of a given
communication session, via header information embedded in the packets.
This means that in TCP communication, there is the ability to ensure
that the host has successfully recieved each packet of information.
Alternatively, the recieving host has the ability to notify the sender
that it has not recieved all the packets, and re-request the missing
datagrams.

UDP does not have this feature, the sender simply throws packets on the
wire to the destination with no control mechanism in place for ensuring
they ever get there.