#include <sys/types.h> 
#include <sys/socket.h> 
#include <string.h> 
#include <sys/un.h>
#include <sys/time.h>
#include <fcntl.h>
#define SOCKETNAME  "selectServerSocket"

int
main(void)
{
        int s;          /* This end of connection*/
        int len;        /* length of sockaddr */
        int nread;      /* return from read() */
        int nready;     /* # fd's ready. */
        int maxfd;      /* fd's 0 to maxfd-1 checked. */ 
        char buf[1024];
        fd_set fds;     /* set of file descriptors to check. */
        struct sockaddr_un name;


        if( (s = socket(AF_UNIX, SOCK_STREAM, 0) ) < 0){
                perror("socket");
                exit(1);
        }

        /*Create the address of the server.*/

        memset(&name, 0, sizeof(struct sockaddr_un));

        name.sun_family = AF_UNIX;
        strcpy(name.sun_path, SOCKETNAME);
        len = sizeof(name.sun_family) + strlen(name.sun_path);


        /*Connect to the server.*/

        if (connect(s, (struct sockaddr *) &name, len) < 0){
                perror("connect");
                exit(1);
        }


        maxfd = s + 1;
        while(1){
                /* Set up polling. */
                FD_ZERO(&fds);
                FD_SET(s,&fds);
                FD_SET(0,&fds);

                /* Wait for some input. */
                nready = select(maxfd, &fds, (fd_set *) 0, (fd_set *) 0,
                                (struct timeval *) 0);

                /* If either device has some input,
                   read it and copy it to the other. */

                if( FD_ISSET(s, &fds))
                {
                        nread = recv(s, buf, sizeof(buf), 0);
                        /* If error or eof, terminate. */
                        if(nread < 1){
                                close(s);
                                exit(0);
                        }
                        write(1, buf, nread);
                }

                if( FD_ISSET(0, &fds))
                {
                        nread = read(0, buf, sizeof(buf));
                        /* If error or eof, terminate. */
                        if(nread < 1){
                                close(s);
                                exit(0);
                        }
                        send( s, buf, nread, 0); 
                }
        } 

}