Re: Can I use same port for sending and receiving in UDP

"Tom Serface" <>
Wed, 1 Apr 2009 13:44:43 -0700
We use the same port for listening and sending in several of our
applications and it works fine. I'm not sure this is "standard" or
anything, but the applications have been working well for a long time and
ports are hard to register with firewalls, etc. so we try to minimize the
one's we use.


"Joseph M. Newcomer" <> wrote in message

A port is associated with a single application. A single application can
use the same
port to both send and receive, but I do not think it is supported for
both. Think of this
as client and server; the client and server ports must be different.

On Tue, 31 Mar 2009 22:46:51 -0700 (PDT), Faisal <>


I've an application which uses UDP Sockets for IPC.

My application communicates with another application through UDP
sockets. A fixed port number is used for this. Now I want to receive
the data send by the other application. Both application runs in the
same machine. Can I use the same UDP port for sending and receiving?

If so, is there any chance that the data sent by my application is
received by itself?

Joseph M. Newcomer [MVP]
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