4 * Copyright (C) 2010 iptelorg GmbH
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 /** various socket related functions.
25 * 2010-08-09 initial version (andrei)
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <netinet/in.h>
33 #include <netinet/in_systm.h>
34 #include <netinet/ip.h>
36 #include <arpa/inet.h>
40 * @return ttl on success, < 0 on error
42 int sock_get_ttl(int sock)
45 unsigned int ioptvallen;
47 ioptvallen=sizeof(ioptval);
48 if (getsockopt( sock, IPPROTO_IP, IP_TTL, (void*) &ioptval,
58 /** set the IP TTL on a socket.
59 * @return ttl on success, < 0 on error
61 int sock_set_ttl(int sock, int ttl)
65 if (setsockopt( sock, IPPROTO_IP, IP_TTL, (void*) &ioptval,
66 sizeof(ioptval)) == -1 )
71 /* vi: set ts=4 sw=4 tw=79:ai:cindent: */