client.c

/*
** talker.c -- a datagram "client" demo
** taken from beej
*/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include "common.h"


#define SERVERPORT "4950"	// the port users will be connecting to
#define SERVER_IP_ADDRESS "192.168.1.12"

int main()
{
    int sockfd, sent_recv_bytes = 0;
    struct addrinfo hints, *servinfo, *p;
    int rv;
    int numbytes;
    test_struct_t client_data;
    result_struct_t result;


    memset(&hints, 0, sizeof hints);
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_DGRAM;

    if ((rv = getaddrinfo(SERVER_IP_ADDRESS, SERVERPORT, &hints, &servinfo)) != 0) {
        fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv));
        return 1;
    }

    // loop through all the results and make a socket
    for(p = servinfo; p != NULL; p = p->ai_next) {
        if ((sockfd = socket(p->ai_family, p->ai_socktype,
                             p->ai_protocol)) == -1) {
            perror("talker: socket");
            continue;
        }

        break;
    }

    if (p == NULL) {
        fprintf(stderr, "talker: failed to create socket\n");
        return 2;
    }

    int addr_len = sizeof(struct sockaddr);

    while(1) {

        /*Prompt the user to enter data*/
        /*You will want to change the promt for the second task*/
        printf("Enter name : ?\n");
        scanf("%s", &client_data.name);
        printf("Enter age : ?\n");
        scanf("%s", &client_data.age);
        printf("Enter group : ?\n");
        scanf("%s", &client_data.group);

        if ((numbytes = sendto(sockfd, &client_data, sizeof(test_struct_t), 0, p->ai_addr, p->ai_addrlen)) == -1){
            perror("talker: sendto");
            exit(1);
        }

        printf("talker: sent %d bytes to %s\n", numbytes, SERVER_IP_ADDRESS);

    }

}