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From: Michael Gronager <gronager@ceptacle.com>
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Subject: [Bitcoin-development] NATPMP and proxy support in libcoin
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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.=20
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.=20
And btw: Also added proxy capability to libcoin (have a look in =
coinChain/Proxy.h for implementation details).
Cheers,
Michael=
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