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Chat program

essam el-nagar

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4.42/5 (38 votes)

2 Dec 2002

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Simple chat program.

Download source and demo files - 39.8 Kb

Introduction

This very simple Chat program was written by using VC++ 6 under Windows 2000. CSocketCli program creates a client socket. CSocket program creates a server socket. If you run the client program, you must specify the address of the other computer in the IP Address editbox in "the server program".

If the client is running but the server isn't running, you will receive an error in the editbox down in the client program, but if you connect you will receive "Connected" message in the chat editbox in the client program.

When you run the server, you don't need to do any thing; just wait until some client program connects with the server. This program handles multiple clients and you can have private chat with friends.

Important note: If you run the Client and the Server in the same computer, please write in the client IP Address textbox the address 127.0.0.1, then press Connect button and you will be connected to the server.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

Written By

essam el-nagar

Software Developer (Senior)

Saudi Arabia

This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

Comments and Discussions

Re: how to make one application work as a server and client simultaneously

Destiny7779-Feb-13 12:54

9-Feb-13 12:54

While learning, it would be best to do ONLY 1 server and 1 client.

When you start to go beyond 1 to 1 connections, that gets a bit tricky to send and receive the messages between multiple connections. Especially when you have people coming and going in the Text Chat. It can be done... but takes a lot of attention to detail to get that done. Unless you want to spend a lot of time, you might want to use programs like ICQ that do that already.

The easiest way to handle multiple connections on the server would be to have a list of connected IP Addresses, then: (1) when a message is sent out from Server send that message to each connected IP Address; or (2) when a message is received (incoming) at the Server, then send out that message to each connected IP Address except for the one that just sent the message to the server.

Keeping a list of connected IP Addresses wouldn't necessarily be difficult but you have to consider what happens when a connection is dropped, and much more.

Smile | :)

Smile | :)

Transmit Image File

Keel15-Jan-04 20:15

15-Jan-04 20:15

Hi, I have a question? How to transmit image file using CSocket? I cannot figure it out.. Pls help me.... Sigh | :sigh:

Sigh | :sigh:

Thx

IPnr in list box

JockeP24-Aug-03 18:41

24-Aug-03 18:41

Instead of having an edit box, as in the picture, I have the IPnr 0.0.0.0 in the list. What is wrong?

Hazem Nasereddin7-Jan-03 2:54

Hazem Nasereddin

7-Jan-03 2:54

Very nice piece of code.

I tried the code on Win 98 and It worked, but It gave me a bind error on Win XP.

Any idea what the problem might be?

kaizer25-Jun-03 5:45

25-Jun-03 5:45

The problem is cause i think windows xp binded the port 5000. so what you could do to get it working is to change the port to something else rather then 5000 for both client and server

asimrehan131-Mar-13 8:47

31-Mar-13 8:47

I am using the given application but when i uses the code in my application the socket never binds and given socket = 4294967295.
But when i uses the given application it works fine, can you please guide me?

asim

Mustafa Bayer4-Dec-02 8:45

4-Dec-02 8:45

Thaks...;) Rose | [Rose]

Rose | [Rose]

Mbayer

Chat With US DI

DCUtility26-Nov-02 16:56

26-Nov-02 16:56

An other great chat!

http://www.codeproject.com/useritems/ChatWithUS.asp

- The hell is paved good intentions.

Re: Chat With US DI <<< Liggity Lame

Anonymous4-Dec-02 6:57

4-Dec-02 6:57

Hah - Look at this fool plugging his own submission in another contributors message board. lame man, lame.

By the way, Essam - I didn't dl the project but from the brief it looks usefull especially for beginners - Thanks for making codeproject a little bit better. Smile | :)

Smile | :)

Re: Chat With US DI <<< Liggity Lame

DCUtility5-Dec-02 3:30

5-Dec-02 3:30

It is your own opignion Anonymous!!!
Any way, fy!

- The hell is paved good intentions.

Re: Chat With US DI <<< Liggity Lame

Anonymous7-Jun-05 15:59

7-Jun-05 15:59

Hello are you single?

Ken Mazaika5-Aug-02 11:52

5-Aug-02 11:52

I really love this sample code on how to write a chat. Greate winsock sample. One thing though. When you write a program to communicate with a port and use threads its typically a good idea to set it's Process Priority setting high. To do this inside the thread() function in this case, near the begining put the following code:

::SetPriorityClass(::GetCurrentProcess(), REALTIME_PRIORITY_CLASS);

This makes the program much less likely to lose, or corrupt data. The previous way rarely loses information, but to be safe you should add it.

Great work though. Thanks. Cool | :cool:

Cool | :cool:

Ken Mazaika

How to make it work

26-Jun-02 20:31

26-Jun-02 20:31

i ran the server process on one machine and the client program on a different machine and did as it is told but it didnt work the client keeps waitin for the connection to establish....can u plz tell me how to make it run Frown | :(

Frown | :(

Re: How to make it work

tomdekok21-Jul-02 1:31

21-Jul-02 1:31

The prog works perfect!(perhaps maybe a fixable memory leak).
You should check:

Are you using the right IP addess and port on both the Host and Client?
Are you using a firewall? If so, turn it off or make the use of the port in question possible.

I assure you it DOES work like a charm, it is on your side.

Tom

____________________________________
Using Visual Studio .NET Architect, including J++.

Re: How to make it work

ahkeR8-Mar-07 7:45

8-Mar-07 7:45

:(i ran both the sever and client programme on the same machine ,it does not work.The client machine keeps waiting.... Please tell me how to make it work.

Client Server Chat

Munty5410-May-02 19:37

10-May-02 19:37

Need help in designing a client server chat application

Now, I am summing it all up. 1. The client server need to be in different processes. 2. Communicate with TCP/ip sockets. 3. Communication is secured with SSL or S-HTTP. 4. Messages recorded in a server side database by the server. 5. A time stamp for each recorded message. 6. The client can request its messages from the server and display it in its own window. But can not change the messages. Cry | :((

Cry | :((

abhishek

Re: Client Server Chat

bamaruckmani27-Sep-04 19:11

bamaruckmani

27-Sep-04 19:11

Now, I am summing it all up. 1. The client server need to be in different processes. 2. Communicate with TCP/ip sockets. 3. Communication is secured with SSL or S-HTTP. 4. Messages recorded in a server side database by the server. 5. A time stamp for each recorded message. 6. The client can request its messages from the server and display it in its own window. But can not change the messages.

12-Mar-02 22:20

12-Mar-02 22:20

Thank you;Thank you;Thank you!!!!!!!!!!!!!;P Poke tongue | ;-P

Poke tongue | ;-P

Re: Thank you!!!!

tomdekok21-Jul-02 1:33

21-Jul-02 1:33

LOL I agree with you 1000%.

Tom Big Grin | :-D

Big Grin | :-D

____________________________________
Using Visual Studio .NET Architect, including J++.

You have memory leaks

11-Dec-01 16:00

11-Dec-01 16:00

HI!
I was searching within your project why you had memory leaks when the program exited. You use AfxBeginThread, that create a thread, but create a memory leak if you use C Run-Time Library.

In MSDN, they tell to use _beginthread() / _endthread()instead of AfxBeginThread / AfxEndThread()

I tried it in your app, and it worked, so if you would like to correct it, it would be great!

bye

Jack
papejack@hotmail.com

help if you can

16-Oct-01 5:18

16-Oct-01 5:18

please i am learning vb6 code and have been trying to make a chat program if eny one could help me please. or even bet give me a program to do it we are at college and it is boring and the teacher told use to not go on the e-mail when we are in class and i want i new way if you can help here is my e-mail address (a5296@tcat.ac.uk) please sent programs to here thanks i lot.

Mad | :mad:

Mad | :mad:

conwaytowers

25-Sep-01 19:11

25-Sep-01 19:11

Can these project realize multi people communication at
the same time?

23-Jul-01 4:44

23-Jul-01 4:44

Thank you sir,
This really worked. I'd tested it.

Uday T.
(Development Engineer)
MSE (I) Pvt. Ltd. India.

number of users on this application

8-Jun-01 4:35

8-Jun-01 4:35

I wanna know how many people can communicate together in the same time Confused | :confused:

Confused | :confused:

Maria Jothi29-May-01 19:46

29-May-01 19:46

Hello Sir ,
I'm new to this Socket Programming . Could you please explain it in detail.
On executing the Program , i'm getting both the dialog Boxes. But Dont Know How to proceed ???

Maria

Maria Jothi (Software Engineer)
MAIL-ID:maria@sdsindia.com
maria_jothi@usa.net

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