Packet Logger

Records all packets sent and recieved while playing and saves it to a file on disconnect!

5.4K Downloads

fabricutility

Rent Server with this Mod

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About this Mod

Packet Logger mod

This mod logs all packets (including all relevant data) that you send to the server, and saves it to a seperate JSON (written and saved on disconnect, inside the 'packet-logs' folder) file with timestamps!

Why not incoming packets?

Minecraft code is non human readable, so reading packet class names leads to a non human readable output, I've had to manually list packet names for each outgoing packet, I do plan to add support for all incoming packets in the future!

Dependencies

This mod requires Fabric api, and Cloth config + Mod menu for configuration.

Available Versions

Packet Logger 1.0.1release

MC 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4fabric

July 12, 2024

Packet Logger 1.0release

MC 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4fabric

February 15, 2024

How to Install Packet Logger on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.4).

Install Mod

Open the mod browser in the dashboard and search for "Packet Logger". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.20.4, 1.20.3, 1.20.2 (+5 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Packet Logger server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.4). You can switch loaders with one click in the panel.

Is Packet Logger compatible with fabric?

Packet Logger officially supports fabric for Minecraft 1.20.4, 1.20.3, 1.20.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Packet Logger – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Packet Logger consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.