Experiment 7

client.c

/********************************************
* Author: Rohan Garg <[email protected] *
* License: MIT ( 2011 )                     *
* client.c                                  *
********************************************/

#include <stdio.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>

#define myport 22301

int main()
{
  int sockid, retval;
  struct sockaddr_in client;
  client.sin_addr.s_addr = inet_addr( "192.168.56.51" );
  client.sin_port = htons(myport);
  client.sin_family = AF_INET;
  sockid = socket( AF_INET, SOCK_STREAM, 0 );
  char c;
  while(( c = (char)getchar()) != EOF ){
    write( client,&c, 1);
    read( client, &c, 1);
    putchar( (int)c );
  }
  close( client );
}

server.c

/********************************************
* Author: Rohan Garg <[email protected] *
* License: MIT ( 2011 )                     *
* server.c                                  *
********************************************/

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>

#define myport 22301

int main()
{
  int sockid, retval;
  char c;
  struct sockaddr_in server, clientid;
  server.sin_addr.s_addr = inet_addr("192.168.56.51");
  server.sin_port = htons(myport);
  server.sin_family = AF_INET;
  if(sockid < 0){
    return 1;
  }
  else{
    retval = bind( sockid, ( struct sockaddr * )&server, sizeof(struct sockaddr));
  }
  listen(sockid, 1);
  retval = accept( sockid, NULL, NULL );
  while( read( retval, &c, 1)){
    write(retval, &c, 1);
  }
  close( retval );
  close( sockid );
}