[Net] Add NAT-PMP port forwarding support #2338
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rebased now that #2330 has been merged, ready for review. |
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Fuzzbawls
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rebased to resolve conflicts and addressed feedback |
furszy
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Jun 7, 2021
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This commit does not change behavior.
# Conflicts: # src/mapport.cpp
-BEGIN VERIFY SCRIPT- sed -i 's/g_upnp_interrupt/g_mapport_interrupt/' src/mapport.cpp sed -i 's/g_upnp_thread/g_mapport_thread/' src/mapport.cpp sed -i 's/LOCAL_UPNP/LOCAL_MAPPED/' src/mapport.cpp sed -i 's/\bupnp\b/mapport/' src/mapport.cpp sed -i 's/LOCAL_UPNP, /LOCAL_MAPPED,/' src/net.h -END VERIFY SCRIPT-
This commit does not change behavior. It is a prerequisite for NAT-PMP support adding.
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The source we are currently using is from 2015. The upstream repo has received a small number of bug fixes and improvements since then. Including one that fixes an issue for Windows users: miniupnp/libnatpmp#13. The source we are currently using is the most recent "official" release, however I don't think it's worth waiting for a new one. The maintainer was prompted to do so in Oct 2020, then again in Jan of this year, and no release has eventuated. Given libnatpmp is a new inclusion into our repository, I think we should be using this newer source. This also cleans up a few warnings we currently see in depends builds: ```bash Extracting libnatpmp... /home/ubuntu/bitcoin/depends/sources/libnatpmp-20150609.tar.gz: OK Preprocessing libnatpmp... Configuring libnatpmp... Building libnatpmp... make[1]: Entering directory '/home/ubuntu/bitcoin/depends/work/build/x86_64-w64-mingw32/libnatpmp/20150609-13efa1beb87' x86_64-w64-mingw32-gcc -Os -fPIC -Wall -DENABLE_STRNATPMPERR -c -o natpmp.o natpmp.c x86_64-w64-mingw32-gcc -Os -fPIC -Wall -DENABLE_STRNATPMPERR -c -o getgateway.o getgateway.c natpmp.c:42: warning: "EWOULDBLOCK" redefined 42 | #define EWOULDBLOCK WSAEWOULDBLOCK | In file included from natpmp.c:38: /usr/share/mingw-w64/include/errno.h:166: note: this is the location of the previous definition 166 | #define EWOULDBLOCK 140 | natpmp.c:43: warning: "ECONNREFUSED" redefined 43 | #define ECONNREFUSED WSAECONNREFUSED | In file included from natpmp.c:38: /usr/share/mingw-w64/include/errno.h:110: note: this is the location of the previous definition 110 | #define ECONNREFUSED 107 | natpmp.c:271:5: warning: ‘readnatpmpresponseorretry’ redeclared without dllimport attribute: previous dllimport ignored [-Wattributes] 271 | int readnatpmpresponseorretry(natpmp_t * p, natpmpresp_t * response) | ^~~~~~~~~~~~~~~~~~~~~~~~~ ar crs libnatpmp.a natpmp.o getgateway.o make[1]: Leaving directory '/home/ubuntu/bitcoin/depends/work/build/x86_64-w64-mingw32/libnatpmp/20150609-13efa1beb87' Staging libnatpmp... Postprocessing libnatpmp... Caching libnatpmp... ```
This fixes linking issues and mirrors what we do with miniupnpc.
furszy
reviewed
Jun 18, 2021
| @@ -16,7 +16,7 @@ Then install [Homebrew](https://brew.sh). | |||
| Dependencies | |||
| ---------------------- | |||
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| brew install autoconf automake berkeley-db4 libtool boost miniupnpc pkg-config python3 qt5 zmq libevent qrencode gmp libsodium rust | |||
| brew install autoconf automake berkeley-db4 libtool boost miniupnpc libnatpmp pkg-config python3 qt5 zmq libevent qrencode gmp libsodium rust | |||
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future nit: miniupnpc and libnatpmp are optional.
random-zebra
approved these changes
Jun 24, 2021
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****Aeinsteroid54/BEPs: [NET] Add NAT-PMP post forwarding support#2337 |
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Built on top of #2330, this backports bitcoin#18077 and bitcoin#21209 to add NAT-PMP port forwarding support, which can function along side of or instead of UPnP.
Similar to how UPnP is treated, NAT-PMP support will be compiled in if the library is found, but the functionality is disabled by default unless passing
--enable-natpmp-defaulttoconfigure, or by using the-natpmpcommand line option at startup.A checkbox has also been added to the settings area of the GUI that allows for on-the-fly enabling/disabling of the port mapping features when saving the settings.