Chat Program using Asynchronous Socket

.

Environment: C#

This is a simple chat program using asynchronous socket. This program is act like a client or a server. It can connect to another other PC (installed with the same program) or it can wait for another PC to connect to it.

You can test the program on the same PC by running two instances of the program. Each one listens to a port (e.g. first is listen to 998 and the second to 999). Click the listen button of both programs, key in the hostname/Host IP Address as "local" or "127.0.0.1", fill in the port number as 999 on the first program (because you want to connect to the second program which listens to port 999),and finally click connect. The IP address will display in the list of the second instance of the program (if successfully connected). At this point, you can start sending messages.

In this simple program, I also demonstrated how the event is raised during connection, disconnection, sending, and receiving (like the OnConnect, OnSend... in MSVC++ MFC's socket class).

Update on 17 Apr 2001

This is an update to the previous code post on 03/22/2002. In the update, I include the sending and receiving function. The sending and receiving file is based on my own command that can modify according to u requirement. The concept is descript as below:

 

Sending

Client

Server

Receiving

 

Send Filename and size to `

Accepted the file detail

 

 

 

_ Send signal back, tell client to start sending

 

 

Once signal is received, start sending file data. (Block by block until end of file)`

Store to file.

 

 

Done

_ Successfully received all

 

       

Actually, you can base on this kind of command to do a lot of stuff like searching file remotely, check remote PC information and other you can think of. Have fun.

Downloads

Download demo project - 13 Kb
Download source - 10 Kb



Comments

  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • IBM Worklight is a mobile application development platform that lets you extend your business to mobile devices. It is designed to provide an open, comprehensive platform to build, run and manage HTML5, hybrid and native mobile apps.

  • Recently, Forrester Consulting conducted a Total Economic Impact™ (TEI) study to better understand the impact of incorporating Polycom voice solutions with Microsoft Lync. Forrester interviewed a company that had already deployed the Lync/Polycom combination to determine its potential return on investment (ROI). Microsoft Lync provides presence information and promotes voice and video collaboration. Polycom extends the benefits of Lync with voice endpoints and further enables collaboration in multiple …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds