How to write a telnet server in java?

I have some basis on sockets and threads.
That was enough to write an http server, but I can't understand how works the telnet protocol and/or how to receive requests.
Of course, I'm not asking for a complete implementation (telnet is much too complex!) but just for the tips that will help me to begin this server in java.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Yes I agree - telnet protocol is not one of the simpliest ones.

Basically have a look at ServerSocket class in*;

ServerSocket ss=new ServerSocket(someListenPort);
      Socket s=ss.accept()
      //do something with s
      // now write/read something to your s
is the basic skeleton for Server

Socket s=new Socket(URL_of_your_server,serverPort);
DataInputStream sin=new DataInputStream( s.getInputStream());
DataOutputStream sout=new DataOutputStream(s.getOutputStream());
// now write/read something to your socket

and that's all....
PS: Check the javadoc documentation for exact parameters/method


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
seguretAuthor Commented:
thanx for the answer, but my problem was elsewhere (of course I knew how to open a serverSocket).
I found my problem :
I didn't think at first that a telnet client can connect without sending any text. It was why I was seeing nothing....
I just had to type something in my client interface !

I see...
Your question was not quite clear I think.

Happy Javing
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.