[MC 1.20.6 - Protocol 1.49.0] nmp server: Failed to verify username

[vincss]

[x] The FAQ doesn't contain a resolution to my issue

Versions

• minecraft-protocol: 1.49.0
• server: vanilla/spigot/paper 1.20.6
• node: 20.10.0

Detailed description of a problem

When I'm trying to connect to the server with a client in version 1.20.6 and the server is using minecraft-protocol 1.49.0, I get the follow error in the client :

Current code

DEBUG CreateServer {
  'online-mode': true,
  motdMsg: { text: 'SleepingServer, waiting for his prince...' },
  port: 25565,
  maxPlayers: 20,
  version: false,
  beforePing: [Function: beforePing],
  validateChannelProtocol: true,
  errorHandler: [Function: errorHandler],
  enforceSecureProfile: true
}

Expected behavior

The connection is accepted, and it doesn't failed to verify the username.

Additional context

When I switch the "oneline-mode" to false:
DEBUG CreateServer { 'online-mode': false, motdMsg: { text: 'SleepingServer, waiting for his prince...' }, port: 25565, maxPlayers: 20, version: false, beforePing: [Function: beforePing], validateChannelProtocol: true, errorHandler: [Function: errorHandler], enforceSecureProfile: false }
The connection is handle but I got an error on the client side :

Thanks for your help & devotion and this package.

Have a nice day.

[rom1504]

@LucienHH do you think you could help figure that out?

[rom1504]

@vincss can you reproduce on a vanilla server ?

[vincss]

Hi,
Yes, it is before the minecraft server starts, I make a server that listen for client before to wake a real server :
https://github.com/vincss/mcsleepingserverstarter/blob/master/src/sleepingMcJava.ts#L40

Thanks for your investigation.

[rom1504]

We checked, client is working in 1.20.6

[vincss]

I'm using the server part of the library and a vanilla client.

[vincss]

Hi,
I also tried with the latest version of node-minecraft-protocol 1.50.0 and client in 1.21.1 , but I ended up with the same error. :(

[rom1504]

Provide more info. It's working for some people and not others

[vincss]

I would gladly provide more information.

When I start a server with the createServer with the version "minecraft-protocol": "^1.50.0", :
https://github.com/vincss/mcsleepingserverstarter/blob/feature/minecraft-protocol_1.50.0/src/sleepingMcJava.ts#L39

DEBUG CreateServer {
  'online-mode': true,
  motdMsg: { text: 'SleepingServer, waiting for his prince...' },
  port: 25565,
  maxPlayers: 20,
  version: false,
  beforePing: [Function: beforePing],
  validateChannelProtocol: true,
  errorHandler: [Function: errorHandler],
  enforceSecureProfile: true
}

In the official client vanilla client in 1.21.1, I get the following error "Failed to verify username" :

Can you tell me which information would help ?

[rom1504]

So your problem is not about node Minecraft protocol client but about the server. Is that right?

[vincss]

Yes, that's it :-)