PaperMC / PaperMC/Paper

PlayerLoginEvent fires twice

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#8,676 6 comments 0 reactions 0 assignees View on GitHub

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status: accepted type: bug
Dominant language
Java
Stars
12.7k
Forks
3.5k
Avg merge
3d 13h
Merged PRs (30d)
11

Description

Expected behavior

When a player connects, the event should only fire once

Observed/Actual behavior

The event fires twice

Steps/models to reproduce

Add the below event listener to your plugin (This event listener can be replaced by turning on the whitelist and looking at the "Disconnecting" logs. The addition of code just makes it a bit easier to see)

@EventHandler
public void playerLoginEvent (PlayerLoginEvent event) {
     System.out.println("Testing");
}

Join on an account and "Testing" will be logged twice

Plugin and Datapack List

[22:58:48 INFO]: Plugins (3): Campfire, LuckPerms, spark

Paper version

[22:58:00 INFO]: This server is running Paper version git-Paper-333 (MC: 1.19.3) (Implementing API version 1.19.3-R0.1-SNAPSHOT) (Git: eec64a4)
You are running the latest version

Other

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue provides no source file or test; begin by reproducing the duplicate PlayerLoginEvent with the supplied listener on the stated Paper version. Trace the login event dispatch path and verify that a connection logs "Testing" only once, including the whitelist/logging reproduction mentioned.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
api
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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