Modscraper

Sort By

Type

Content

Connectivity logo

Connectivity

Mod

by someaddon

Fix Login timeouts, Packet sizes errors, Payloads errors, ghostblocks and more.

Downloads

135,490,978

Type

Mod

CurseForge ID

470193

Last Updated

Apr 9, 2026

Description

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.

162637017-9a30d47b-493d-4743-9029-ac09dcc438f9.png

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
Messages sent by the client
Server commands:

List traffic  rate of all players:  /connectivity packetsAllPlayers
Player traffic list

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

Packet overview over all packets sent in total

Print the largest packet of a type to the latest.log, e.g. the packet called MovePacket: /connectivity printpacket MovePacket

Similar Mods

Mouse Tweaks

Mouse Tweaks

Enhances inventory management by adding various functions to the mouse buttons.

Mod 433,962,914
AppleSkin

AppleSkin

Adds some useful information about food/hunger to the HUD

Mod 374,243,000
Bookshelf

Bookshelf

An open source library for other mods!

Mod 370,274,783
Controlling

Controlling

Adds a search bar to the Key-Bindings menu

Mod 365,459,691
GeckoLib

GeckoLib

A 3D animation library for entities, blocks, items, armor, and more!

Mod 337,340,051
Clumps

Clumps

Clumps XP orbs together to reduce lag

Mod 327,547,129

Included in Modpacks

DeceasedCraft - Urban Zombie Apocalypse DeceasedCraft - Urban Zombie Apocalypse Better MC [FORGE] - BMC4 Better MC [FORGE] - BMC4 All the Mons - ATMons All the Mons - ATMons Prominence™ II: Hasturian Era Prominence™ II: Hasturian Era All the Mods 10: To the Sky ATM10SKY All the Mods 10: To the Sky ATM10SKY Cisco's Fantasy Medieval RPG [Ultimate] Cisco's Fantasy Medieval RPG [Ultimate] Better MC [NEOFORGE] BMC5 Better MC [NEOFORGE] BMC5 All in One [Modded One Block] All in One [Modded One Block] Beyond Depth Beyond Depth Cave Horror Project 1 Cave Horror Project 1 Lucky World Invasion Lucky World Invasion Society: Sunlit Valley Society: Sunlit Valley All of Create All of Create Linggango Linggango Ascendra Ascendra Crazy Craft Updated Crazy Craft Updated Agmundr - Zombie Apocalypse Agmundr - Zombie Apocalypse Roguelike Adventures and Dungeons 2 Roguelike Adventures and Dungeons 2 Fear Nightfall: Remains of Chaos Fear Nightfall: Remains of Chaos Cisco's Fantasy Medieval RPG [Dragonfyre] Cisco's Fantasy Medieval RPG [Dragonfyre] Beyond Ocean Beyond Ocean Abyssal Ascent Abyssal Ascent One Block Horror One Block Horror All the Mods 9 - ATM9 All the Mods 9 - ATM9 BETTER FANTASY - Overture BETTER FANTASY - Overture Solo Leveling - Reawakening Solo Leveling - Reawakening Valhelsia 6 Valhelsia 6 DEADZONE - Multiplayer Zombie Apocalypse DEADZONE - Multiplayer Zombie Apocalypse Just Create SMP Just Create SMP From Magic To Tech From Magic To Tech Zombie Apocalypse: Last Days in the Wasteland | Survive Hordes of Zombies Zombie Apocalypse: Last Days in the Wasteland | Survive Hordes of Zombies New Simple Mods - Easy to Understand | 1.21 UPDATE! New Simple Mods - Easy to Understand | 1.21 UPDATE! Better MC [FABRIC] BMC3 Better MC [FABRIC] BMC3 Create: Perfect World Create: Perfect World BigChadGuys Plus (w/ Cobblemon!) BigChadGuys Plus (w/ Cobblemon!) Prehistoric World - Dinosaurs, Adventure & Quests | NEW PREHISTORY UPDATE! Prehistoric World - Dinosaurs, Adventure & Quests | NEW PREHISTORY UPDATE! Over Stars Over Stars Kimetsu no Yaiba (Demon-Slayer) ModPack Kimetsu no Yaiba (Demon-Slayer) ModPack Endless Rise Remastered Endless Rise Remastered SteamPunk [LPS] SteamPunk [LPS] Create: Perfect World 2 Create: Perfect World 2 Better MC Skyblock [BMCS] Better MC Skyblock [BMCS] Better MC [FABRIC] BMC2 Better MC [FABRIC] BMC2 More FPS [FORGE] - Increase FPS & Shaders (1.21 UPDATE) More FPS [FORGE] - Increase FPS & Shaders (1.21 UPDATE) waccyy's Fantasia waccyy's Fantasia Create: Above and Beyond Create: Above and Beyond The Fungal Infection | Co-Op Base Defense The Fungal Infection | Co-Op Base Defense Medieval MC [FORGE] MMC4 Medieval MC [FORGE] MMC4 The Last War - Guns And Adventure (Survivor's World with Guns) | QUESTS UPDATE! The Last War - Guns And Adventure (Survivor's World with Guns) | QUESTS UPDATE! Beyond Ascension Beyond Ascension Horrorland - New Horror Modpack (Herobrine, Cave Dweller...) | Horror+ Horrorland - New Horror Modpack (Herobrine, Cave Dweller...) | Horror+ SkyFactory One SkyFactory One All the Mods 8 - ATM8 All the Mods 8 - ATM8 Farming Crossing 5: Made to Order! Farming Crossing 5: Made to Order! MineColonies Official MineColonies Official All the Mods 7 - To the Sky - atm7sky All the Mods 7 - To the Sky - atm7sky Cave Horror Project 2 Cave Horror Project 2 Christmas Holidays - Ideal For Festivities | Christmas Quests Update! Christmas Holidays - Ideal For Festivities | Christmas Quests Update! ZS Pack (Tensura) ZS Pack (Tensura) Cottage Witch Cottage Witch Better MC [FORGE] BMC1 Better MC [FORGE] BMC1 Cisco's Fantasy Medieval RPG [Lite] Cisco's Fantasy Medieval RPG [Lite] Better MC [FABRIC] BMC1 Better MC [FABRIC] BMC1 MYTHCRAFT 5 MYTHCRAFT 5 All the Mods 9 - No Frills All the Mods 9 - No Frills BigChadGuys Plus (Non Cobblemon!) BigChadGuys Plus (Non Cobblemon!) Beyond Cosmo Beyond Cosmo

External Resources

CurseForge Source Code Issues