How to get portnumber of a PC in a network ?

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I need to get PortNumber of a PC to send it some text message and I need to get it programmatically ... How can I do that ?

thanks in advance

Posted 7-Oct-13 20:58pm

marimir

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Mahesh Bailwal 8-Oct-13 3:07am

Do you have any server application running on target machine where you want to send text message?

Mehdi Gholam 8-Oct-13 3:08am

Any computer has multiple ports so you can't get a "port number of a pc", you can however see if you can connect to a known port on a pc.

marimir 8-Oct-13 3:10am

Yeah I know it has multiple ports ... but I want to use one of them .. how should I get one of them ?!

marimir 8-Oct-13 3:15am

Actually I'm trying to write a chat program and I want to send message between clients ...
so I need a unique port number for all of the computers in a network ...and I send the message by using portnumber and IP ...
How to get a portnumber in program?

Mehdi Gholam 8-Oct-13 3:18am

You should already know your port number since you are communicating via that port, if you can't decide just pick a port (1234 for example) and write your program with that.

marimir 8-Oct-13 3:24am

I can pick every Portnumber that I want ?!
I didn't know that ... I thought that it would differ from one computer to the other One...
Thank you Mehdi Gholam

Mehdi Gholam 8-Oct-13 3:32am

You communicate on single port number not different ones.

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Sergey Alexandrovich Kryukov · Accepted Answer · 2013-10-07T21:36:00

Solution 1

There is no such thing. A port number is a property of an application, not a computer. In particular, you can open a TCP socket and listen on some port. Many different ports can be used at the same time.

—SA

Posted 7-Oct-13 21:36pm

Sergey Alexandrovich Kryukov

Comments

marimir 8-Oct-13 3:42am

thank you Sergey Alenxandrovich Kryukov ..
your answer was useful

Sergey Alexandrovich Kryukov 8-Oct-13 10:32am

Very good.
Good luck, call again.
—SA