Connectivity

Source-provided project description. FreeMinecraftMods keeps creator credit and adds separate compatibility and decision guidance below.

Project overview

Lightweight mod which solves several connection problems like Login-Timeouts, DecoderException, Packet size limits, Ghostblock issues, Payload too large and more. It also offers commands to analyze network traffic and a bunch of debugging utilities, advanced error logging, packet logging etc. Requires Cupboard dependency to be installed in newer versions Login timeout Play timeout Detailed Network statistics Fix packet size exceptions during login/play Log data of too large packet to show sources Log warnings about too large data beeing sent Malformed/Malicious traffic protection The mod is not required on both sides, but offers useful functionality for both sides. Randompatches (in)compatibility: Set this in the randompatches.toml config file so random patches does not crash when started alongside connectivity: mixin_blacklist = ["ServerPlayNetHandlerKeepAlive"] Connectivity has some overlap with randompatches and happens to apply first, which makes random patches crash. Timeoutout/XL packets mod is incompatible/not needed alongside this If you enjoy this mod consider supporting the development, any support is greatly appreciated. The development is an unpaid free-time activity, so any support helps being able to spend more time on it. You can support me on Patreon or just spreading the word around. Network stats and Commands : Commands for network stats show the traffic rate aswell as which packet is causing it. kb is short for kilobyte Statistics are refreshed once per minute and save a history of up to 5 minutes. All commands have an optional minute count you can give it to display(1-5, 5 is default when no argument is given) Normally most traffic is caused by chunk packets, modded packets should rarely exceed those. Client side command to show outgoing traffic: /connectivity packetsClient Server commands: List traffic rate of all players: /connectivity packetsAllPlayers List packets by type send to a specific player(example is player Dev): /connectivity packetsPlayer Dev List all packets sent out by the server by packet type. /connectivity packetsSummary Print the largest packet of a type to the latest.log, e.g. the packet called MovePacket: /connectivity printpacket MovePacket

FreeMinecraftMods decision guide

This mod is most relevant to players looking for Player Transport, Map and Information, Server Utility on Fabric, NeoForge, Forge, undefined. Treat those labels as discovery hints, then verify the exact file and dependency list on the official project page.

The source record was updated on Apr 3, 2026. Check the changelog and file page to see whether that update applies to the version and loader you plan to use.

What to verify before choosing a file

• Confirm that the file is published by the credited creator on the linked official source.
• Match the Minecraft version exactly instead of relying only on a broad category label.
• Read dependencies, incompatibilities, and changelog notes before updating an existing instance.
• Match the loader or server platform and its required version. Forge and NeoForge are not interchangeable.
• Back up worlds and configuration files before testing the project in a long-term save or public server.

Compatibility at a glance

Minecraft versions in this snapshot: 1.21.8, 1.21, 1.21.1, 1.21.9, 1.20.1, 1.20, 1.20.2, 1.19.2, 1.19.4, 1.19.3, 1.19, 1.19.1

Loaders and platforms: Fabric, NeoForge, Forge, undefined

Before you install

Match the exact Minecraft version and loader, install every required dependency, and test in a separate profile before opening an important world. Keep a backup before changing a working mod list.

Source, licensing, and corrections

FreeMinecraftMods does not mirror the project files. Use the official source for downloads, release notes, dependencies, support, and licensing details. Project names, images, and creator-written descriptions remain the property of their respective owners.

How listings are reviewed | Report incorrect project information | Rights-holder and DMCA information