Multi-user Chat application making procedure using java socket programming

1. Welcome to the Presentation
Course : Computer Network
American International
University-Bangladesh

2. Presented by:
1
Name: Noman,Asif-Al
ID:14-27134-2
2
Name: Md. Mahmudul Haque
ID:14-27205-2
3
Name: Beg , Md Safat Alam
ID:14-26469-2

4. Contents
 Introduction.
- About Chat Application.
- About Tcp , Client , Server , Port &
Port & Socket.
 Implementation
- Basic Diagram Of Chat
Application.
- Process Of Multiuser Chat
Application.
- Implementation using Java Socket
Socket Programming.

5. INTRODUCTION OF MULTI-
USER CHAT-APPLICATION

6. About Chat-Application
Chat-Application provide the
process of talking to other
people who are using the
Internet at the same time you
are.

7. About Tcp
Transmission Control Protocol is a
standard that defines how to
establish and maintain a network
conversation via which application
programs can exchange data. TCP
works with the Internet Protocol
(IP), which defines how computers
send packets of data to each other.

8. About Client & Server
 A Client is a computer that
request services from a server
computer.
 A Server is a computer that
provides services to clients and
controls access to hardware
software and other resources.

9. About Socket
A socket is one endpoint of a two-way communication link
between two programs running on the network. A socket is
bound to a port number so that the TCP layer can identify
the application that data is destined to be sent to.

10. About Port
In computer networking, a port represents a communication
channel or endpoint. A port can be either physical or
virtual.

11. IMPLEMENTATION OF MULTI-
USER CHAT-APPLICATION

12. Basic Diagram Of Chat Application

13. Process Of Multi-User Chat Application
Chat “Client1” Chat “Server”
port (9001)
Ip (10.0.0.1)
Chat “Client2”
Wait For
Another Client

14. Implementation In Java
Package: import java.net.*;
import java.io.*;
Opening a socket requires a hostname(or IP Address) and
port number
Socket client = new Socket(“ hostname ”,port number);
 Create an input Stream & client name input
BufferedReader in = new BufferedReader ( new
InputStreamReader(client.getInputStream( ) );
Private String name = in.readline();

15. Continued….
 Create an Output Stream
PrintWriter out = new PrintWriter
(client.getOutputStream( ));
 Close the socket when done
client.close();

16. Continued….
Server To Client Communication Channel
 Client To Server Communication Channel

17. CONCLUSION OF MULTI-
USER CHAT-
APPLICATION

18. Advantage & Disadvantage
 Advantage
- User have to put unique name for chat.
- Single user can’t start chatting.
 Disadvantage
- Can’t handle program crush.
- If Server fails, whole system will fail.

19. Future Plan
 Integration of video chat using web cam.
 Making it more secure.
 Recovery management system.

20. Any Question Please??