Failed to read packet -- error=EOF

[ethansky]

I am attempting to setup a Tekkit Classic (MC 1.2.5) server for some friends with the game server on an inner DMZ and mc-router on the outer DMZ. When attempting to connect to the server via mc-router, the MC client fails to join and gives a "end of stream" error. When looking at the logs, I get the following:

time="2023-04-03T14:36:28Z" level=debug msg="Debug logs enabled"
time="2023-04-03T14:36:28Z" level=info msg="Created route mapping" backend="10.10.110.2:27000" serverAddress=tekkit.mydomain.com
time="2023-04-03T14:36:28Z" level=info msg="Listening for Minecraft client connections" listenAddress=":25565"
time="2023-04-03T14:37:15Z" level=info msg="Got connection" client="10.10.10.10:51153"
time="2023-04-03T14:37:15Z" level=debug msg="Reading packet" client="10.10.10.10:51153"
time="2023-04-03T14:37:15Z" level=debug msg="Reading frame" client="10.10.10.10:51153"
time="2023-04-03T14:37:15Z" level=debug msg="Read frame length" client="10.10.10.10:51153" length=2
time="2023-04-03T14:37:15Z" level=debug msg="Reading frame content" client="10.10.10.10:51153" length=2 total=2
time="2023-04-03T14:37:15Z" level=debug msg="Read frame" client="10.10.10.10:51153" frame="Frame:[len=2, payload=0X0024]"
time="2023-04-03T14:37:15Z" level=debug msg="Read packet" client="10.10.10.10:51153" packet="Frame:[len=2, packetId=0, data=0X24]"
time="2023-04-03T14:37:15Z" level=debug msg="Got packet" client="10.10.10.10:51153" length=2 packetID=0
time="2023-04-03T14:37:15Z" level=error msg="Failed to read handshake" clientAddr="10.10.10.10:51153" error=EOF
time="2023-04-03T14:37:15Z" level=debug msg="Closing frontend connection" client="10.10.10.10:51153"

This is what I get when trying to view MOTD/server status from the multiplayer menu:

time="2023-04-03T16:02:00Z" level=info msg="Got connection" client="10.10.10.10:64949"
time="2023-04-03T16:02:00Z" level=debug msg="Reading packet" client="10.10.10.10:64949"
time="2023-04-03T16:02:00Z" level=debug msg="Reading legacy server list ping" client="10.10.10.10:64949"
time="2023-04-03T16:02:03Z" level=error msg="Failed to read packet" clientAddr="10.10.10.10:64949" error=EOF
time="2023-04-03T16:02:03Z" level=debug msg="Closing frontend connection" client="10.10.10.10:64949"

I've done a similar setup in the past using a more modern modpack (1.12 & 1.16), so this may be a case of Minecraft being too old given that it is version 1.2.5.

[itzg]

this may be a case of Minecraft being too old given that it is version 1.2.5.

That's a very good theory.

[ethansky]

Definitely looks like it's related to the Netty rewrite between 1.6.4 and 1.7.2: "Minecraft version 1.6.4 and older used a protocol versioning scheme separate from the current one."

[itzg]

Good find. It looks like the packet framing is different but still pretty simple. I'm not sure if this could be reliably detected, so will need a command line argument to indicate "legacy mode" or possibly the specific protocol version.

[thekdub]

I'm running into the same; also interested in using this with 1.2.5. Any possible timeline on this?