UDP CLIENT USING APR

#include "apr_network_io.h"
#include "apr_errno.h"
#include "apr_general.h"
#include "apr_lib.h"

int main (int argc, char *argv[])

{
    apr_pool_t *p;

    apr_status_t rv;
    apr_socket_t *sock = NULL;
    apr_size_t len;
    apr_sockaddr_t *to;
    const char *addr = "100.100.100.100";
    char recvbuf[4096];

    apr_initialize();
    apr_pool_create(&p, NULL);

    rv = apr_socket_create(&sock, APR_INET, SOCK_DGRAM, 0, p);
    if (rv != APR_SUCCESS)

   {
        fprintf(stderr, "cannot create socket\n");
        exit(1);
    }

    rv = apr_sockaddr_info_get(&to, addr, APR_UNSPEC, 10000, 0, p);
    if (rv != APR_SUCCESS)

   {
        fprintf(stderr, "cannot get info on to\n");
        exit(1);
    }

    rv = apr_socket_opt_set(sock, APR_SO_REUSEADDR, 1);
    if (rv != APR_SUCCESS)

   {
        fprintf(stderr, "fail on socket_opt_set\n");
        exit(1);
    }

    len = strlen(argv[1]) + 1;
    rv = apr_socket_sendto(sock, to, 0, argv[1], &len);
    if (rv != APR_SUCCESS)

   {
        fprintf(stderr, "fail sendto\n");
        exit(1);
    }

    len = 4096;
    rv = apr_socket_recvfrom(to, sock, 0, recvbuf, &len);
    if (rv != APR_SUCCESS)

   {
        fprintf(stderr, "client: fail on recvfrom\n");
        exit(1);
    }
    printf("client: recieved %s\n", recvbuf);

    apr_socket_close(sock);
    return 0;
}

gcc -g -o testclient testclient.c -I/usr/local/apr/include/apr-1 -L/usr/local/apr/lib -lapr-1 -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE