Организация консольного чата на С

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <memory.h>
#include <fcntl.h>/* open() and O_XXX flags */
#include <unistd.h> /* close() */
#define SRV_PORT 1234
#define BUF_SIZE 64
#define TXT_QUEST "Кто ты?\n"
int  main ()
{
    int s, s_new;
    int from_len;
    char buf[BUF_SIZE];
    struct sockaddr_in sin, from_sin;
    s = socket (AF_INET, SOCK_STREAM, 0);
   memset ((char *)&sin, '\0', sizeof(sin));
    sin.sin_family = AF_INET;
   sin.sin_addr.s_addr = INADDR_ANY;
    sin.sin_port = SRV_PORT;
   bind (s, (struct sockaddr *)&sin, sizeof(sin));
    listen (s, 3);
    while (1) {
     from_len = sizeof(from_sin);
      s_new = accept (s, &from_sin, &from_len);
     write (s_new, TXT_QUEST, sizeof(TXT_QUEST));
     from_len = read (s_new, buf, BUF_SIZE);
     write (1, buf, from_len);
     shutdown (s_new, 0);
     close (s_new);
      };
   }

#include <sys/types.h>  
#include <sys/socket.h>  
#include <netinet/in.h>  
#include <netdb.h>  
#include <memory.h>   
#define SRV_HOST "localhost"  
#define SRV_PORT 1234  
#define CLNT_PORT 1235  
#define BUF_SIZE 64 
#define TXT_ANSW "Я первый клиент\n"  
main () { 
int s; 
int from_len; 
char buf[BUF_SIZE]; 
struct hostent *hp; 
struct sockaddr_in clnt_sin, srv_sin;  
s = socket (AF_INET, SOCK_STREAM, 0); 
memset ((char *)&clnt_sin, '\0', 
                       sizeof(clnt_sin)); 
clnt_sin.sin_family = AF_INET; 
clnt_sin.sin_addr.s_addr = INADDR_ANY; 
clnt_sin.sin_port = CLNT_PORT; 
bind (s, (struct sockaddr *)&clnt_sin, 
                   sizeof(clnt_sin));  
memset ((char *)&srv_sin, '\0', 
                sizeof(srv_sin)); 
hp = gethostbyname (SRV_HOST); 
srv_sin.sin_family = AF_INET; 
memcpy ((char 
*)&srv_sin.sin_addr,hp->h_addr,hp->h_length); 
srv_sin.sin_port = SRV_PORT; 
connect (s, &srv_sin, sizeof(srv_sin)); 
from_len = recv (s, buf, BUF_SIZE, 0); 
write (1, buf, from_len); 
send (s, TXT_ANSW, sizeof(TXT_ANSW), 0); 
close (s); 
exit (0);
  }