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do not stop discovery on sendto() failure

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This commit is contained in:
Thomas Bernard 2017-03-13 15:33:38 +01:00
parent d36853118e
commit e6ed3c5b8a
1 changed files with 21 additions and 9 deletions
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30
miniupnpc/minissdpc.c
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@ -503,6 +503,7 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
unsigned long _ttl = (unsigned long)ttl;
#endif
int linklocal = 1;
int sentok;
if(error)
*error = MINISSDPC_UNKNOWN_ERROR;
@ -613,14 +614,22 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
return NULL;
}
if(ipv6) {
int mcastHops = ttl;
if(setsockopt(sudp, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastHops, sizeof(mcastHops)) < 0)
{
PRINT_SOCKET_ERROR("setsockopt(IPV6_MULTICAST_HOPS,...)");
}
} else {
#ifdef _WIN32
if(setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_TTL, (const char *)&_ttl, sizeof(_ttl)) < 0)
if(setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_TTL, (const char *)&_ttl, sizeof(_ttl)) < 0)
#else /* _WIN32 */
if(setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0)
if(setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0)
#endif /* _WIN32 */
{
/* not a fatal error */
PRINT_SOCKET_ERROR("setsockopt(IP_MULTICAST_TTL,...)");
{
/* not a fatal error */
PRINT_SOCKET_ERROR("setsockopt(IP_MULTICAST_TTL,...)");
}
}
if(multicastif)
@ -705,6 +714,7 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
}
/* receiving SSDP response packet */
for(deviceIndex = 0; deviceTypes[deviceIndex]; deviceIndex++) {
sentok = 0;
/* sending the SSDP M-SEARCH packet */
n = snprintf(bufr, sizeof(bufr),
MSearchMsgFmt,
@ -748,7 +758,8 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
if(error)
*error = MINISSDPC_SOCKET_ERROR;
PRINT_SOCKET_ERROR("sendto");
break;
} else {
sentok = 1;
}
#else /* #ifdef NO_GETADDRINFO */
memset(&hints, 0, sizeof(hints));
@ -780,19 +791,20 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
#endif
PRINT_SOCKET_ERROR("sendto");
continue;
} else {
sentok = 1;
}
}
freeaddrinfo(servinfo);
if(n < 0) {
if(!sentok) {
if(error)
*error = MINISSDPC_SOCKET_ERROR;
break;
}
#endif /* #ifdef NO_GETADDRINFO */
/* Waiting for SSDP REPLY packet to M-SEARCH
* if searchalltypes is set, enter the loop only
* when the last deviceType is reached */
if(!searchalltypes || !deviceTypes[deviceIndex + 1]) do {
if((sentok && !searchalltypes) || !deviceTypes[deviceIndex + 1]) do {
n = receivedata(sudp, bufr, sizeof(bufr), delay, &scope_id);
if (n < 0) {
/* error */