Ah! It actually does work for me now! It was just a matter of my own stupidity and bad typing. The problem was that I typed "external <the_ip><space><port>" instead of "external <the_ip>:<port>". Everything works as expected now.
oystein@lt-143044:~$ gnubg -t -q GNU Backgammon 1.07.001 20240331 Copyright (C) 1999-2004 Gary Wong. Copyright (C) 2004-2022 the AUTHORS; for details type `show version'. This program comes with ABSOLUTELY NO WARRANTY; for details type `show warranty'. This is free software, and you are welcome to redistribute it under certain conditions; type `show copying' for details. (No game) external 172.25.210.35:9876 Waiting for a connection from 172.25.210.35:9876... Accepted connection from 172.25.208.1. Thank you, Jon, for testing this - else I would have given up! -Øystein tor. 28. aug. 2025 kl. 12:32 skrev Øystein Schønning-Johansen < oyste...@gmail.com>: > Oh! I think we are halfway there! > > That actually took me a step further. However the messages back from WSL > gets blocked. > > "Windows socket error (reading from external connection): > An established connection was aborted by the software in your host > machine." > > Do you have some medicine for this as well? > > -Øystein > > tor. 28. aug. 2025 kl. 12:13 skrev Jon Kinsey <jonkin...@gmail.com>: > >> I think you need the actual wsl ip address, try: >> wsl hostname -I >> Followed by: >> netsh interface portproxy add v4tov4 listenport=9876 >> listenaddress=0.0.0.0 connectport=9876 connectaddress=<WSL_IP> >> >> Jon >> >> On 28 Aug 2025, at 10:49, Øystein Schønning-Johansen <oyste...@gmail.com> >> wrote: >> >> >> Hi! >> >> I am experimenting a bit with external player - I would love to just >> download and install a windows build of GNU Backgammon and then connect to >> an external player hosted on a WSL based linux on the very same hardware. >> >> >> - So I've downloaded and installed GNU Backgammon for windows. >> - I have then installed GNU Backgammon on the WSL based Ubuntu 24.04 >> with apt. (sudo apt install gnubg) >> - Started gnubg on the Linux: gnubg -t >> - started the external player: external 127.0.0.1 9876 >> - Switching back to the GUI gnubg installation on Windows and opening >> Setting->Players. Clicking the External player radio button and typing in >> " >> 127.0.0.1:9876 >> >> So, now I was hoping that it would work out of the box - however, I get >> the error message in the Windows based GUI installation. It says: >> >> "Windows socket error (127.0.0.1:9876): >> No connection could be made because the target machine actively refused >> it." >> >> Is this supposed to work, or is it blocked by a setting on my computer? >> Or is an incompatibility due to the implementation using Winsock on the GUI >> installation and unix sockets on the WSL? >> >> -Øystein >> >>
