#define _REENTRANT
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <sys/uio.h>
#include <unistd.h>
#include <pthread.h>

static void *doit(void *);

#define MAXLINE 100

int main(int argc, char **argv)
 {
int listenfd, connfd, port, clientlen, *iptr;
struct sockaddr_in clientaddr;
struct hostent *hp;
char *haddrp;
unsigned short client_port;
pthread_t pthread_id;

/*port = atoi(argv[1]); */

listenfd = passiveTCP(argv[1]);
printf("Sock=%d", listenfd);

while (1) {
	 iptr =(int*) malloc(sizeof(int)); 
	clientlen = sizeof(clientaddr);
	 *iptr = accept(listenfd, (struct sockaddr *)&clientaddr, &clientlen);
  	pthread_create(&pthread_id, NULL, &doit, (void*) iptr); 
}

}

static void *doit(void *arg)
{
int	connfd,n;
char	line[MAXLINE];

connfd = *((int *) arg);
free(arg);
pthread_detach(pthread_self());

for ( ; ; ) {
    if ( (n = read(connfd, line, MAXLINE)) == 0)
         return;	/* connection closed by other end */
     write(connfd, line, n);
}
close(connfd);	
return(NULL);
}