I tried compiling the example proxy in main.go and it works great on all the servers i've tried except on mco.cubecraft.net:19132 for some strange reason. Also most of the server will disconnect you for login timeout if it doesn't login fast enough but I easily fixed that by moving raknet.Dial after the authchain

I don't have the error it gives when connecting to cubecraft right now, i will post it later. You can try for yourself anyway.

Thanks for the libraries! I'm using the nbt package for a java edition proxy to decode the dimension nbt in the JoinGame packet, but there is an error when trying to use a Minecraft server version 1.16+.

Here the error details (the 1.16.1 server sends the player the packet and the proxy can't read the nbt part of it):

error decoding packet (type: *packet.JoinGame, id: 25, protocol: 1.16.1(736), direction: ClientBound): nbt: unknown tag '110' at offset 1149 during op 'Match'"

code ref: https://github.com/minekube/gate/blob/690e29d172f0deebaec48fbc3dcb49983ed36667/pkg/proto/packet/joingame.go#L148

This is the complete data field (containing the nbt somewhere in the middle) of the JoinGame packet (hex encoded, use a converter like https://www.scadacore.com/tools/programming-calculators/online-hex-converter/ if that may help):

0000 001f 0100 0313 6d69 6e65 6372 6166
743a 6f76 6572 776f 726c 6414 6d69 6e65
6372 6166 743a 7468 655f 6e65 7468 6572
116d 696e 6563 7261 6674 3a74 6865 5f65
6e64 0a00 0009 0009 6469 6d65 6e73 696f
6e0a 0000 0004 0800 046e 616d 6500 136d
696e 6563 7261 6674 3a6f 7665 7277 6f72
6c64 0100 0962 6564 5f77 6f72 6b73 0101
0006 7368 7275 6e6b 0001 000b 7069 676c
696e 5f73 6166 6500 0100 0b68 6173 5f63
6569 6c69 6e67 0001 000c 6861 735f 736b
796c 6967 6874 0108 000a 696e 6669 6e69
6275 726e 001e 6d69 6e65 6372 6166 743a
696e 6669 6e69 6275 726e 5f6f 7665 7277
6f72 6c64 0100 0975 6c74 7261 7761 726d
0005 000d 616d 6269 656e 745f 6c69 6768
7400 0000 0003 000e 6c6f 6769 6361 6c5f
6865 6967 6874 0000 0100 0100 0968 6173
5f72 6169 6473 0101 0007 6e61 7475 7261
6c01 0100 1472 6573 7061 776e 5f61 6e63
686f 725f 776f 726b 7300 0008 0004 6e61
6d65 0019 6d69 6e65 6372 6166 743a 6f76
6572 776f 726c 645f 6361 7665 7301 0009
6265 645f 776f 726b 7301 0100 0673 6872
756e 6b00 0100 0b70 6967 6c69 6e5f 7361
6665 0001 000b 6861 735f 6365 696c 696e
6701 0100 0c68 6173 5f73 6b79 6c69 6768
7401 0800 0a69 6e66 696e 6962 7572 6e00
1e6d 696e 6563 7261 6674 3a69 6e66 696e
6962 7572 6e5f 6f76 6572 776f 726c 6401
0009 756c 7472 6177 6172 6d00 0500 0d61
6d62 6965 6e74 5f6c 6967 6874 0000 0000
0300 0e6c 6f67 6963 616c 5f68 6569 6768
7400 0001 0001 0009 6861 735f 7261 6964
7301 0100 076e 6174 7572 616c 0101 0014
7265 7370 6177 6e5f 616e 6368 6f72 5f77
6f72 6b73 0000 0800 0a69 6e66 696e 6962
7572 6e00 1b6d 696e 6563 7261 6674 3a69
6e66 696e 6962 7572 6e5f 6e65 7468 6572
0100 0975 6c74 7261 7761 726d 0103 000e
6c6f 6769 6361 6c5f 6865 6967 6874 0000
0080 0100 076e 6174 7572 616c 0008 0004
6e61 6d65 0014 6d69 6e65 6372 6166 743a
7468 655f 6e65 7468 6572 0100 0962 6564
5f77 6f72 6b73 0004 000a 6669 7865 645f
7469 6d65 0000 0000 0000 4650 0100 0673
6872 756e 6b01 0100 0b70 6967 6c69 6e5f
7361 6665 0101 000c 6861 735f 736b 796c
6967 6874 0001 000b 6861 735f 6365 696c
696e 6701 0500 0d61 6d62 6965 6e74 5f6c
6967 6874 3dcc cccd 0100 0968 6173 5f72
6169 6473 0001 0014 7265 7370 6177 6e5f
616e 6368 6f72 5f77 6f72 6b73 0100 0800
0a69 6e66 696e 6962 7572 6e00 186d 696e
6563 7261 6674 3a69 6e66 696e 6962 7572
6e5f 656e 6401 0009 756c 7472 6177 6172
6d00 0300 0e6c 6f67 6963 616c 5f68 6569
6768 7400 0001 0001 0007 6e61 7475 7261
6c00 0800 046e 616d 6500 116d 696e 6563
7261 6674 3a74 6865 5f65 6e64 0100 0962
6564 5f77 6f72 6b73 0004 000a 6669 7865
645f 7469 6d65 0000 0000 0000 1770 0100
0673 6872 756e 6b00 0100 0b70 6967 6c69
6e5f 7361 6665 0001 000c 6861 735f 736b
796c 6967 6874 0001 000b 6861 735f 6365
696c 696e 6700 0500 0d61 6d62 6965 6e74
5f6c 6967 6874 0000 0000 0100 0968 6173
5f72 6169 6473 0101 0014 7265 7370 6177
6e5f 616e 6368 6f72 5f77 6f72 6b73 0000
0013 6d69 6e65 6372 6166 743a 6f76 6572
776f 726c 6413 6d69 6e65 6372 6166 743a
6f76 6572 776f 726c 64e2 d3a6 044a 3443
d714 0a00 0100 00

ASCII encoding of the above hex, if that even helps:


minecraft:overworldminecraft:the_netherminecraft:the_end
		dimension
nameminecraft:overworld
	bed_works

shrunk
piglin_safe
has_ceiling
has_skylight

infiniburnminecraft:infiniburn_overworld
	ultrawarm
ambient_lightlogical_height

	has_raids

natural

respawn_anchor_worksnameminecraft:overworld_caves
	bed_works

shrunk
piglin_safe
has_ceiling

has_skylight

infiniburnminecraft:infiniburn_overworld
	ultrawarm
ambient_lightlogical_height

	has_raids

natural

respawn_anchor_works
infiniburnminecraft:infiniburn_nether
	ultrawarm
logical_height€
naturalnameminecraft:the_nether
	bed_works
fixed_timeFP
shrunk

piglin_safe

has_skylight
has_ceiling

ambient_light=ÌÌÍ
	has_raid

panic: error obtaining Live token: error decoding flowtoken XML container: EOF

This error started happening really often, then it went away and now it seems like it happens everytime.

I tried with different accounts and also different IPs in case Microsoft blocked my IP because of suspicious login attempts. I also tried creating a new account using a new residential IP and then use the same IP to login with gophertunnel API, it's not working, same error but I'm able to login using minecraft

When connecting to a realm (using IP:Port as Remote Address), the proxy crashes when you try to join. (Address is fine, it works in the normal Bedrock Client)

panic: runtime error: makeslic e: len out of range

goroutine 81 [running]:
github.com/sandertv/go-raknet/internal/message.(*OpenConnectionRequest1).Write(0xc00086fe84, 0xc0002f5f50)
        C:/Users/RootRobo/go/pkg/mod/github.com/sandertv/[email protected]/internal/message/open_connection_request_1.go:20 +0x209
github.com/sandertv/go-raknet.(*connState).sendOpenConnectionRequest1(0xc0000acd50, 0xc00086000c, 0x4, 0x0)
        C:/Users/RootRobo/go/pkg/mod/github.com/sandertv/[email protected]/dial.go:439 +0x75
github.com/sandertv/go-raknet.(*connState).discoverMTUSize.func2(0xc00027c720, 0xc0000acd50, 0xc0002f6db8, 0xc0002025a0, 0xc00021e3c0, 0xc00027c6c0, 0x917320, 0xc000380120)
        C:/Users/RootRobo/go/pkg/mod/github.com/sandertv/[email protected]/dial.go:369 +0x1b5
created by github.com/sandertv/go-raknet.(*connState).discoverMTUSize
        C:/Users/RootRobo/go/pkg/mod/github.com/sandertv/[email protected]/dial.go:361 +0x1f6
exit status 2

[22:59:25] [Server thread/CRITICAL]: ErrorException: "Invalid argument supplied for foreach()" (EXCEPTION) in "src/pocketmine/Player" at line 1923 [22:59:25] [Server thread/DEBUG]: #0 src/pocketmine/Player(1923): pocketmine\utils\Utils::errorExceptionHandler(integer 2, string[39] Invalid argument supplied for foreach(), string[67] phar:///home/container/PocketMine-MP.phar/src/pocketmine/Player.php, integer 1923, array[2]) [22:59:25] [Server thread/DEBUG]: #1 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(119): pocketmine\Player->handleLogin(object pocketmine\network\mcpe\protocol\LoginPacket) [22:59:25] [Server thread/DEBUG]: #2 src/pocketmine/network/mcpe/protocol/LoginPacket(142): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleLogin(object pocketmine\network\mcpe\protocol\LoginPacket) [22:59:25] [Server thread/DEBUG]: #3 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(111): pocketmine\network\mcpe\protocol\LoginPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter) [22:59:25] [Server thread/DEBUG]: #4 src/pocketmine/network/mcpe/protocol/BatchPacket(123): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\LoginPacket) [22:59:25] [Server thread/DEBUG]: #5 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(111): pocketmine\network\mcpe\protocol\BatchPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter) [22:59:25] [Server thread/DEBUG]: #6 src/pocketmine/Player(3158): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket) [22:59:25] [Server thread/DEBUG]: #7 src/pocketmine/network/mcpe/RakLibInterface(169): pocketmine\Player->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket) [22:59:25] [Server thread/DEBUG]: #8 vendor/pocketmine/raklib/src/server/ServerHandler(99): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string[20] XXX.XX.XXX.XXX XXXXX, object raklib\protocol\EncapsulatedPacket, integer 0) [22:59:25] [Server thread/DEBUG]: #9 src/pocketmine/network/mcpe/RakLibInterface(109): raklib\server\ServerHandler->handlePacket() [22:59:25] [Server thread/DEBUG]: #10 src/pocketmine/network/mcpe/RakLibInterface(99): pocketmine\network\mcpe\RakLibInterface->process() [22:59:25] [Server thread/DEBUG]: #11 vendor/pocketmine/snooze/src/SleeperHandler(123): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe\{closure}() [22:59:25] [Server thread/DEBUG]: #12 vendor/pocketmine/snooze/src/SleeperHandler(85): pocketmine\snooze\SleeperHandler->processNotifications() [22:59:25] [Server thread/DEBUG]: #13 src/pocketmine/Server(2346): pocketmine\snooze\SleeperHandler->sleepUntil(double 1581461965.8149) [22:59:25] [Server thread/DEBUG]: #14 src/pocketmine/Server(2203): pocketmine\Server->tickProcessor() [22:59:25] [Server thread/DEBUG]: #15 src/pocketmine/Server(1785): pocketmine\Server->start() [22:59:25] [Server thread/DEBUG]: #16 src/pocketmine/PocketMine(272): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[16] /home/container/, string[24] /home/container/plugins/) [22:59:25] [Server thread/DEBUG]: #17 src/pocketmine/PocketMine(295): pocketmine\server() [22:59:25] [Server thread/DEBUG]: #18 (1): require(string[71] phar:///home/container/PocketMine-MP.phar/src/pocketmine/PocketMine.php)

Hey, I'm working on the Bedrock part of Gate proxy and would find myself to copy-paste-modify many functions from your library because many read/write helpers like https://github.com/Sandertv/gophertunnel/blob/10479899eb371fa2f7181377363e69192076c080/minecraft/protocol/varint.go#L52 require a full blown *bytes.Buffer.

Could you please downgrade all such cases to the minimal interface required?

For example as done in util/reader.go & util/writer.go: https://github.com/minekube/gate/tree/af6f2f5ecd4e3f1cdc03e8f3861049d553d1c2f7/pkg/proto/util

The following error occurs when using the Minecraft Xbox One edition. I can't reproduce it as I don't have an Xbox One but all you need to do is join gophertunnel and that will happen.

panic: start game spawning timeout

I guess the client doesn't like the StartGame packet gophertunnel creates.

The Xbox client is able to join other external servers just fine (only tested on PocketMine servers)

When connecting to a Dragonfly server your CPU usage will jump to 100% and your whole PC starts lagging! There will also be no chunks loaded, you're just sitting in space.

I can't connect to my localhost world using Dial("raknet", "localhost:19132") function. It says

panic: ping raknet: context deadline exceeded

What I've tried already (and it didn't work):

• 127.0.0.1, [::1]
• setting udp and tcp instead of raknet (udp makes it wait until context deadline exceeded, tcp connection was just refused)
• using DialTimeout(...) set to several minutes

I didn't change anything in the firewall settings, I have Windows 10 and LAN Multiplayer option is turned on in my world. Everything works fine when I join some internet server. Am I missing something?

I've been getting this error really often, expecially on mineplex. When this happens a temporary "fix" is restarting the proxy but eventually it will happen again.

error reading from client connection: error reading batch: invalid packet checksum: d6f4aaa48ed69500 should be 228fc984d0749b49

This error message can be either from listener.go or dial.go since it's the same for both. I found out it's from there

So either the server is not encrypting properly (and i don't think so since it works without proxy) or the proxy is doing something wrong.

I get the following error when connecting to a 1.16.210 server with the 1.11.0 tag:

InvalidArgumentException: "Data should be exactly 115920 bytes, got 9 bytes" (EXCEPTION) in "pmsrc/src/pocketmine/network/mcpe/protocol/types/SkinImage" at line 42 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #0 pmsrc/src/pocketmine/Player(1975): pocketmine\network\mcpe\protocol\types\SkinImage->__construct(integer 69, integer 420, string[9] .....rq.^) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #1 pmsrc/src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(117): pocketmine\Player->handleLogin(object pocketmine\network\mcpe\protocol\LoginPacket) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #2 pmsrc/src/pocketmine/network/mcpe/protocol/LoginPacket(145): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleLogin(object pocketmine\network\mcpe\protocol\LoginPacket) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #3 pmsrc/src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(109): pocketmine\network\mcpe\protocol\LoginPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #4 pmsrc/src/pocketmine/network/mcpe/protocol/BatchPacket(130): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\LoginPacket) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #5 pmsrc/src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(109): pocketmine\network\mcpe\protocol\BatchPacket->handle(object pocketmine\network\mcpe\PlayerNetworkSessionAdapter) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #6 pmsrc/src/pocketmine/Player(3318): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #7 pmsrc/src/pocketmine/network/mcpe/RakLibInterface(169): pocketmine\Player->handleDataPacket(object pocketmine\network\mcpe\protocol\BatchPacket) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #8 pmsrc/vendor/pocketmine/raklib/src/server/ServerHandler(95): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string[18]my ip50831, object raklib\protocol\EncapsulatedPacket, integer 0) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #9 pmsrc/src/pocketmine/network/mcpe/RakLibInterface(109): raklib\server\ServerHandler->handlePacket() 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #10 pmsrc/src/pocketmine/network/mcpe/RakLibInterface(99): pocketmine\network\mcpe\RakLibInterface->process() 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #11 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(113): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe{closure}() 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #12 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(75): pocketmine\snooze\SleeperHandler->processNotifications() 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #13 pmsrc/src/pocketmine/Server(2155): pocketmine\snooze\SleeperHandler->sleepUntil(double 1616991725.4625) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #14 pmsrc/src/pocketmine/Server(1992): pocketmine\Server->tickProcessor() 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #15 pmsrc/src/pocketmine/Server(1586): pocketmine\Server->start() 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #16 pmsrc/src/pocketmine/PocketMine(291): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[21] /home/div/pocketmine/, string[29] /home/div/pocketmine/plugins/) 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #17 pmsrc/src/pocketmine/PocketMine(321): pocketmine\server() 2021-03-29 [04:22:05] [Server thread/CRITICAL]: #18 pmsrc(11): require(string[76] phar:///home/div/pocketmine/PocketMine-MP.phar/src/pocketmine/PocketMine.php)

The vanilla client allows a server to write a 0 byte which indicates an immediate tagEnd, which is not supported by gophertunnel. Since the client allows it and can read the rest of the packet without issues, I believe it should also be implemented in gophertunnel

there doesn't seem to currently be a way of knowing what the error message was that the server disconnected the user with when (minecraft.Dialer).Dial() errors. It only returns the typical dial minecraft 192.168.2.157:51549->xx.xxx.xxx.xxx:19132: use of closed network connection message

https://github.com/Sandertv/gophertunnel/blob/0de533a5e490f127330818ffba2c96b93b813e69/minecraft/protocol/packet/boss_event.go#L42-L49 Those fields seem to be functional nowadays. I haven't gotten around to test them on actual entities, but if the BossEntityUniqueID matches the player's UUID, these fields can be used to update the health and title of the boss bar

https://github.com/Sandertv/gophertunnel/blob/b1dfb04b1de2878d8bb20252b49ed4e3efe176a0/minecraft/resource/pack.go#L62

On android the path this ends up using is "/data/local/tmp" which is inaccessible unless the user has a rooted device

I'm currently using os.UserConfigDir() to get around this locally

getting this error

Failed to connect%!v(PANIC=Error method: runtime error: invalid memory address or nil pointer dereference)panic: runtime error: invalid memory address or nil pointer dereference
        panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x72249a]

goroutine 1 [running]:
github.com/sandertv/gophertunnel/minecraft.(*Conn).Close(0xc000020280?)
        /home/cody/go/pkg/mod/github.com/sandertv/[email protected]/minecraft/conn.go:440 +0x1a
panic({0x76fee0, 0xaac660})
        /snap/go/9952/src/runtime/panic.go:838 +0x207
go.uber.org/atomic.(*Bool).Load(...)
        /home/cody/go/pkg/mod/go.uber.org/[email protected]/bool.go:49
github.com/sandertv/gophertunnel/minecraft.(*Conn).DoSpawnContext(0x882990?, {0x8829c8?, 0xc0002ae660?})
        /home/cody/go/pkg/mod/github.com/sandertv/[email protected]/minecraft/conn.go:274 +0x28
github.com/sandertv/gophertunnel/minecraft.(*Conn).DoSpawn(0x87c240?)
        /home/cody/go/pkg/mod/github.com/sandertv/[email protected]/minecraft/conn.go:254 +0x6b
main.seeIfAnyoneIsHome()
        /home/cody/GolandProjects/livegoverflow/main.go:33 +0x173
main.main()
        /home/cody/GolandProjects/livegoverflow/main.go:65 +0x17

I've tried on a locally and externally hosted server with no luck, any ideas what I might be doing wrong?