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miniupnpc.c: set multicast TTL to 2 by default

This commit is contained in:
Thomas Bernard 2015-07-22 15:00:01 +02:00
parent ed4a01d2d6
commit 151b16a1ed
1 changed files with 11 additions and 2 deletions
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13
miniupnpc/miniupnpc.c
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@ -1,4 +1,4 @@
/* $Id: miniupnpc.c,v 1.131 2015/07/15 12:41:14 nanard Exp $ */
/* $Id: miniupnpc.c,v 1.132 2015/07/22 12:51:43 nanard Exp $ */
/* Project : miniupnp
* Web : http://miniupnp.free.fr/
* Author : Thomas BERNARD
@ -374,6 +374,9 @@ upnpDiscoverDevices(const char * const deviceTypes[],
MIB_IPFORWARDROW ip_forward;
#endif
int linklocal = 1;
unsigned char ttl = 2; /* UDA v1.1 says :
The TTL for the IP packet SHOULD default to 2 and
SHOULD be configurable. */
if(error)
*error = UPNPDISCOVER_UNKNOWN_ERROR;
@ -515,10 +518,16 @@ upnpDiscoverDevices(const char * const deviceTypes[],
{
if(error)
*error = UPNPDISCOVER_SOCKET_ERROR;
PRINT_SOCKET_ERROR("setsockopt");
PRINT_SOCKET_ERROR("setsockopt(SO_REUSEADDR,...)");
return NULL;
}
if(setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl) < 0))
{
/* not a fatal error */
PRINT_SOCKET_ERROR("setsockopt(IP_MULTICAST_TTL,...)");
}
if(multicastif)
{
if(ipv6) {