I just finished adding NATPMP, together with IDG UPnP, to libcoin. This enables
libcoin/bitcoind to setup port mapping also on Apple routers (AirPort
Extreme/Express/TimeMachine) and a few other that supports this protocol.
libcoin/bitcoind first tried to setup mapping using UPnP, if that fails it
resorts to using PMP.
It chooses a lease time of (default) 20 minutes and renews this every 10
minutes. This also means that if you are running libcoin on your laptop it
will, when e.g. moved to your work, just setup the mapping there and the
mapping back home will silently expire.
To include portmapping in libcoin/bitcoind the only thing needed is to add the
PortMapper class and start it:
PortMapper mapper(node.get_io_service(), port);
if(portmap) mapper.start();
where "portmap" is the former "upnp" command line option.
Also note that I choose to include the relevant portions of miniupnpc and
libnatpmp in the coinNAT library to make it easier to build.
I choose to make a rather aggressive setting for quitting searching for an IGD
device (3 seconds). If I waited too long here the PMP port mapping would only
kick in after the other clients had tried to connect to the new node and timed
out.
If it is too small please notify me - I only have access to a UPnP router
sporadicly.
And btw: Also added proxy capability to libcoin (have a look in
coinChain/Proxy.h for implementation details).
Cheers,
Michael
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