test_getaddrinfo.c revision ac6a88edbf65ff3f9e40d6e4bf1e55a002be6d6c 
1/* this program is used to test that getaddrinfo() works correctly
2 * without a 'hints' argument
3 */
4
5#include <sys/types.h>
6#include <sys/socket.h>
7#include <netdb.h>
8
9#include <stdio.h>  /* for printf */
10#include <string.h> /* for memset */
11#include <netinet/in.h>  /* for IPPROTO_TCP */
12
13#define  SERVER_NAME  "www.android.com"
14#define  PORT_NUMBER  "9999"
15
16int main(void)
17{
18    struct addrinfo  hints;
19    struct addrinfo* res;
20    int              ret;
21
22    /* first, try without any hints */
23    ret = getaddrinfo( SERVER_NAME, PORT_NUMBER, NULL, &res);
24    if (ret != 0) {
25        printf("first getaddrinfo returned error: %s\n", gai_strerror(ret));
26        return 1;
27    }
28
29    freeaddrinfo(res);
30
31    /* now try with the hints */
32    memset(&hints, 0, sizeof(hints));
33    hints.ai_family   = AF_UNSPEC;
34    hints.ai_socktype = SOCK_STREAM;
35    hints.ai_protocol = IPPROTO_TCP;
36
37    ret = getaddrinfo( SERVER_NAME, PORT_NUMBER, &hints, &res );
38    if (ret != 0) {
39        printf("second getaddrinfo returned error: %s\n", gai_strerror(ret));
40        return 1;
41    }
42
43    return 0;
44}
45