Okay, so I post here the logs after a game in which I was disconnected from everybody (but my internet was still working)
the last lines of game.log :
debug: Current gametime: 00:17:00
info: CNetTCPBuf::Read(): recv() failed: WSAECONNRESET
warning: GPGNET: Ignoring unknown gpg.net command "ConnectionShutdown".
warning: Connection dialogue opening due to disconnection by players:
info: Gruffman
info: LordCastiel
info: GeoJeffrey
info: Commander_Cancan
info: NovoNoob
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: Sending game result: 1 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
debug: Loading module '\000/lua/ui/game/gameresult.lua\000'
info: GAMERESULT : \000defeat -10
debug: Loading module '\000/lua/ui/dialogs/score.lua\000'
debug: Loading module '\000/lua/ui/dialogs/hotstats.lua\000'
debug: Loading module '\000/lua/ui/dialogs/myeffecthelpers.lua\000'
info: Sending game result: 4 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 3 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 5 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 6 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 7 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 8 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 9 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 10 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 11 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: Sending game result: 2 defeat -10
info: CNetTCPBuf::Flush(): send() failed: WSAECONNRESET
info: GAMERESULT : \000defeat -10
info: GPGNET: setting nat handler to 0x00000000
info: Run time: 0h27m01s
Is it possible to know what causes the error and how to solve it ?
Thanks