Attachment 363088 Details for Bug 606980

demo code that shows the problem

libcbug-demo.c (text/plain), 1.33 KB, created by Matthias Andree on 2010-05-19 00:09:58 UTC

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Creator: Matthias Andree

Created: 2010-05-19 00:09:58 UTC

Size: 1.33 KB

patch

obsolete

>#include <sys/types.h>
>#include <sys/socket.h>
>#include <netdb.h>
>#include <stdio.h>
>#include <stdlib.h>
>#include <unistd.h>
>#include <string.h>
>
>#define BUF_SIZE 500
>
>int
>main (int argc, char *argv[])
>{
>    struct addrinfo hints;
>    struct addrinfo *result, *rp;
>    int s, j;
>    char buf[BUF_SIZE];
>
>    if (argc != 3)
>    {
>	fprintf (stderr, "Usage: %s host port\n", argv[0]);
>	exit (EXIT_FAILURE);
>    }
>
>    /* Obtain address(es) matching host/port */
>
>    memset (&hints, 0, sizeof (struct addrinfo));
>    hints.ai_family = AF_UNSPEC;	/* Allow IPv4 or IPv6 */
>    hints.ai_socktype = SOCK_STREAM;	/* Datagram socket */
>    hints.ai_flags = AI_ADDRCONFIG;
>
>    s = getaddrinfo (argv[1], argv[2], &hints, &result);
>    if (s != 0)
>    {
>	fprintf (stderr, "getaddrinfo: %s\n", gai_strerror (s));
>	exit (EXIT_FAILURE);
>    }
>
>    /* getaddrinfo() returns a list of address structures.
>       Try each address until we successfully connect(2).
>       If socket(2) (or connect(2)) fails, we (close the socket
>       and) try the next address. */
>
>    for (rp = result, j = 0; rp != NULL; rp = rp->ai_next)
>    {
>	if (0 == getnameinfo(rp->ai_addr, rp->ai_addrlen, buf, sizeof(buf), NULL, 0, NI_NUMERICHOST)) {
>	    printf("Address %d: %s\n", ++j, buf);
>	} else {
>	    printf("getnameinfo failed, skipping this address\n");
>	}
>
>    }
>    exit(EXIT_SUCCESS);
>}

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Attachments on bug 606980: 363088