1. CHAT APPLICATION A PRESENTATION ON Dr. Neepa shah
MASTER OF COMPUTER APPLICATION To
Gujarat Vidhyapith, Ahmadabad.
Submitted By :
Guided By :
Keval Pithva
Abhishek Doshi
Pinkal Patel
Jaimin Solanki
Dr. Neepa shah
Arjun singh (B. Tech)

2. Why choose the topic of CHAT Application ??
Before years ago, people were liking to interact each other and sharing the thoughts, But nowadays trend is changed, youngsters are not believed in real relationship, but they liking to Live in Virtual world, due to the expansion of growth of internet facilities rapidly, So nowadays Chat grabs the internet market.
Objectives :
Our objective is to know about the various concept of Internet .
To know the various function of C ,that are used for internet connection
To Spread the Basic knowledge of socket programming as we are the post graduate students

3. Introduction
Chat application is grabbed the market day by day. Number of chat applications are in the market like facebook, twitter, whatsapp, we-chat, mchat, Live chat, Go chat, chat on etc.
Facilities
Text messaging
Voice messages
Video Calling
File Transfer(Video, Images etc.)
Smiley

4. Types of chat application
Simple chat application ( One-Way)
Multi client chat application

5. Basic knowledge What is port?
These ports allow software applications to share hardware resources without interfering with each other. Computers and routers automatically manage network traffic travelling via their virtual ports. Network firewalls additionally provide some control over the flow of traffic on each virtual port for security purposes. See in firewall
What is Protocol ?
A standard set of regulations and requirements that allow two electronic items to connect to and exchange information with one another. FTP (File Transfer Protocol), HTTP (Hypertext Transfer Protocol), TCP/IP (Transfer Control Protocol/Internet Protocol), and SMTP (Simple Mail Transfer Protocol).
What is Socket ?
When a computer program needs to connect to a local or wide area network such as the Internet, it uses a software component called a socket.

6. Prerequisites
We have used one way communication it works like walkie-talkie, it works with well established LAN/WLAN connection.
System Requirements :-
Minimum OS requirement: Windows XP SP2 or Windows 2003 SP1 or (see below) 64 bit OS
Minimum hardware requirement: P3 500 MHz, 256 MB RAM

7. How to configure Programme ??
At Client Side :-
1 First of all, Open the run command by pressing win + R.
2. Type cmd
3. Go to the path where application is stored..like
C:\chat and Press enter

8. At server side
1 First of all, Open the run command by pressing win + R.
2. Type cmd
3. Go to the path where application is stored and enter ip address..like
C:\chat (local host)
and Final Press enter

9. Programming Pre-processor
Header file :
Stdio.h
Stdlib.h
Winsock.h
Other Requirements :
“Winsock 2.0 .dll” is to be installed (It is used for socket programming on windows based OS)

10. Library Function Winsock.h : struct sockaddr_in { short sin_family;
u_short sin_port;
struct in_addr sin_addr;
char sin_zero[8]; };

11. Socket(PF_INET , SOCK_STREAM , IPPROTO_TCP)
Bind(Serv__Sock , Serv__Sock Pointer Add ,Sizeof(Serv_add))
Connect(Cli_Sock, Serv__add Pointer Add, sizeof(serv_add))
Listen(Serv_sock ,MAX_PEND)
Recv(Soc_name , msg , msg_len , flag)
Send(soc_name , msg, msg_len, flag)
Accept(Serv_Sock, Cli_Sock Pointer Add , Cli_len Pointer add)
For compilation and linking of source code :
MinGW (GCC) compiler
Digital Mars compiler

12. Execution

13. SERVER
CLIENT
Open Socket for server
Open Socket of client
Construct Local Address
Construct Local Address
Bind with service
Connect with server
Listen from client
Sending Message
Accept Request
Receiving Message
Receiving Message
Sending Message

14. Screen Shots
Enjoy it !!!

15. Bibliography http://msdn.microsoft.com/en- us/library/windows/desktop
( Help for Winsock.h)
( Help to Understand Network Socket programming)