multichat.txt

CLIENT - SERVER CHAT APPLICATION

CLIENT(TCP):

#include<stdio.h>
#include<string.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<stdlib.h>
#define port 5000
void main()
{
struct sockaddr_in serveraddr;
struct sockaddr_in newaddr;
int clisocket;
int size;
char buffer[100];
while(1)
{
clisocket=socket(AF_INET,SOCK_STREAM,0);
if(clisocket>0)printf("socket created");
serveraddr.sin_family=AF_INET;
serveraddr.sin_port=htons(port);
serveraddr.sin_addr.s_addr=inet_addr("127.0.0.1");
connect(clisocket,(struct sockaddr *)&serveraddr,sizeof(serveraddr));
printf("Enter message to send to server :");
scanf("%s",buffer);
if(buffer[0]=='0')
{
break;
}
send(clisocket,sizeof(buffer),1024,0);
recv(clisocket,sizeof(buffer),1024,0);
printf("\n Received from server: %s",buffer);
close(clisocket);
}
}

SERVER(TCP)

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<sys/types.h>
#include<sys/socket.h>
#define port 5000
void main()
{
int sersocket,s,newsocket,clisocket;
struct sockaddr_in serveraddr;
struct sockaddr_in newaddr;
sersocket=socket(AF_INET,SOCK_STREAM,0);
if(sersocket>0) printf("socket created");
serveraddr.sin_family=AF_INET;
serveraddr.sin_port=htons(port);
serveraddr.sin_addr.s_addr=htonl(INADDR_ANY);

s=bind(sersocket,(struct sockaddr *)&serveraddr,
sizeof(serveraddr))
if(s==0) printf("\nsocket is binded");

listen(sersocket,1);
clisocket=sizeof(newaddr);
int n;
char buffer[100];

while((newsocket=accept(sersocket,(struct sockaddr *)&newaddr,&clisocket))>0)
{
while((n=recv(newsocket,buffer,sizeof(buffer,0))>0)
{
printf("data received by server %s",buffer);
printf("\nenter word to be sent to client ");
scanf("%s",buffer);
send(newsocket,buffer,sizeof(buffer),0);
}
}
close(sersocket);
//close(newsocket);
}