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miniupnpd/minissdp.c: send ssdp:alive packets more than once 

fixes #35
This commit is contained in:
Thomas Bernard 2014-02-25 11:37:36 +01:00
parent a06c695fe3
commit 9832adc456
1 changed files with 16 additions and 0 deletions
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16
miniupnpd/minissdp.c
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@ -506,6 +506,22 @@ SendSSDPNotify(int s, const struct sockaddr * dest,
{
syslog(LOG_NOTICE, "sendto() sent %d out of %d bytes", n, l);
}
/* Due to the unreliable nature of UDP, devices SHOULD send the entire
* set of discovery messages more than once with some delay between
* sets e.g. a few hundred milliseconds. To avoid network congestion
* discovery messages SHOULD NOT be sent more than three times. */
n = sendto_schedule(s, bufr, l, 0, dest,
#ifdef ENABLE_IPV6
ipv6 ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in),
#else
sizeof(struct sockaddr_in),
#endif
250);
if(n < 0)
{
syslog(LOG_ERR, "sendto(udp_notify=%d, %s): %m", s,
host ? host : "NULL");
}
}
static void