TCP SOCKET DATE AND TIME USING C

SERVER

#include<stdio.h>

#include<sys/types.h>

#include<sys/socket.h>

#include<netinet/in.h>

#include<time.h>

#include<string.h>

#include<stdlib.h>

#define max 30

#define PORT 2100

int main()

{

int sersoc,clisoc,conn,len,wri;

char str[max];

pid_t pid;

time_t ticks;

socklen_t clilen;

struct sockaddr_in servaddr,cliaddr;

servaddr.sin_family=AF_INET;

servaddr.sin_port=htons(PORT);

servaddr.sin_addr.s_addr=htonl(INADDR_ANY);

if((sersoc=socket(AF_INET,SOCK_STREAM,0))<0)

{

perror("Socket Error");

exit(0);

}

if(bind(sersoc,(struct sockaddr *)&servaddr,sizeof(servaddr))<0)

{

perror("Bind Error");

exit(0);

}

listen(sersoc,10);

for(;;)

{

len=sizeof(cliaddr);

conn=(accept(sersoc,(struct sockaddr *)&clisoc,&len));

if((pid=fork())==0)

{

close(sersoc);

ticks=time(NULL);

strcpy(str,ctime(&ticks));

if(wri==(write(conn,str,sizeof(str),0))<0)

{

printf("Write Error");

exit(0);

}

close(conn);

exit(0);

}

close(conn);

}

close(sersoc);

return 0;

}

CLIENT

#include<stdio.h>

#include<sys/types.h>

#include<sys/socket.h>

#include<netinet/in.h>

#include<time.h>

#include<string.h>

#include<arpa/inet.h>

#include<stdlib.h>

#define CLI_PORT 2100

#define BUFF_SIZE 30

int main(int argc,char **argv)

{

int clisoc,re;

char recbuff[BUFF_SIZE];

struct sockaddr_in cliaddr;

bzero(&cliaddr,sizeof(cliaddr));

cliaddr.sin_family=AF_INET;

cliaddr.sin_port=htons(CLI_PORT);

cliaddr.sin_addr.s_addr=inet_addr(argv[1]);

if((clisoc=socket(AF_INET,SOCK_STREAM,0))<0)

{

perror("Socket Errror");

exit(0);

}

if((connect(clisoc,(struct sockaddr *)&cliaddr,sizeof(cliaddr)))<0)

{

perror("Connect Error");

exit(0);

}

if((re=(read(clisoc,recbuff,sizeof(recbuff),0)))<0)

{

printf("Read Error");

exit(0);

}

printf("The Current Date and Time : %s\n",recbuff);

close(clisoc);

return 0;

}

OUTPUT

FROM SERVER SIDE

$ cc tcptimeserver.c

$ ./a.out

FROM CLIENT SIDE

$ cc tcptimeclient.c

$ ./a.out 127.0.0.1

The Current Date and Time : Wed Mar 23 05:55:11 2011

$