#define _GNU_SOURCE
#include <poll.h>
 int s1;
        int rv, portNo;
        int buffsize = 1024;
        char *buf1 = malloc(buffsize);
        struct pollfd ufds[2];
         struct sockaddr_in serv_addr;


        portNo = atoi(argv[2]);

        s1 = socket(PF_INET, SOCK_STREAM, 0);

        bzero((struct sockaddr_in *) &serv_addr, sizeof(serv_addr));
        serv_addr.sin_family = AF_INET;
        serv_addr.sin_port = htons(portNo);
        inet_pton(AF_INET, argv[1], &serv_addr.sin_addr);

        if(connect(s1, (struct sockaddr*) &serv_addr, sizeof(serv_addr)) < 0)
                perror("Connect");

        ufds[0].fd = s1;
        ufds[0].events = POLLIN | POLLRDHUP;     //check for normal or out of band
 //wait for event on the socket , 5 second timeout
        rv = poll(ufds, 2, 5000);
        while(1){
                if(rv == -1)
                        perror("poll");

                else if(rv == 0)
                        printf("Timeout error occured ! ..\n");

                else{
                        if(ufds[0].revents & POLLRDHUP){
                                printf("Stream socket peer closed connection, or shut down  writing  half of connection \n");
                                break;
                        }
                        //check for events on s1
                        if(ufds[0].revents & POLLIN) {
                                recv(s1, buf1, buffsize, 0); // receive normal data
                        }
                        if (ufds[0].revents & POLLPRI) {
                                recv(s1, buf1, sizeof buf1, MSG_OOB); // out-of-band data
                                printf("received out of band data ...\n");
                        }

                }
                printf("the message received:%s \n", buf1);
                sleep(1);
        }
        close(s1);
}