fixes#698
As advised in UDA:
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. In addition, the device MUST
re-send its advertisements periodically prior to expiration of the duration
specified in the CACHE-CONTROL header field; it is RECOMMENDED that such
refreshing of advertisements be done at a randomly-distributed interval
of less than one-half of the advertisement expiration time.
(CACHE-CONTROL value is minimum 1800 seconds, so the interval should be
less than 900s
MiniUPnP project
(c) 2006-2024 Thomas Bernard
webpage: http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
github: https://github.com/miniupnp/miniupnp
freecode: http://freecode.com/projects/miniupnp
contact: miniupnp@free.fr
This directory contain the miniUPnP daemon software, aka miniUPnPd.
This software is subject to the conditions detailed in
the LICENSE file provided with this distribution.
The miniUPnP daemon is an UPnP IGD (internet gateway device)
which provide NAT traversal services to any UPnP enabled client on
the network.
See http://www.upnp.org/ for more details on UPnP.
During the year 2011, support for IGD v2 has been added.
In 2012, IGD v2 WANIPv6FirewallControl has been implemented.
IGD2 is still not enabled by default because of interoperability
issues.
In addition to UPnP IGD, miniUPnPd supports NAT-PMP and PCP :
See information about NAT Port Mapping Protocol (NAT-PMP) here :
http://miniupnp.free.fr/nat-pmp.html
NAT-PMP is the precursor of Port Control Protocol (PCP, RFC 6887).
In 2013, support for PCP has been added too.
Read the INSTALL file for instructions to compile, install and
configure miniupnpd on your system.
Report bugs to miniupnp@free.fr or on the web forum
https://miniupnp.tuxfamily.org/forum/
or using https://github.com/miniupnp/miniupnp/issues
Thomas Bernard
9339f0e52c