Modscraper Modscraper Minecraft

Sort By

Type

Content

Tags

Connectivity logo

Connectivity

Mod

by someaddon

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

Type

Mod

CurseForge Downloads

169,037,918

CurseForge ID

470193

Last Updated

Nov 7, 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

Compatibility

Mod Loaders

Client Fabric Server

Game Versions

26.3

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

Mini PC for self-hosting

Mini PC for Self-Hosting

A low-power box that can sit in a cupboard and run a modded server around the clock.

View on Amazon →

As an Amazon Associate I earn from qualifying purchases.

Similar Mods

Just Enough Items (JEI)

Just Enough Items (JEI)

View Items and Recipes

Mod 729,710,562
Cloth Config API (Fabric/Forge/NeoForge)

Cloth Config API (Fabric/Forge/NeoForge)

Config Screen API for Minecraft

Mod 571,041,654
Mouse Tweaks

Mouse Tweaks

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

Mod 550,397,647
Fabric API

Fabric API

Core API library for the Fabric toolchain

Mod 525,760,534
AppleSkin

AppleSkin

Adds some useful information about food/hunger to the HUD

Mod 520,912,147
GeckoLib

GeckoLib

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

Mod 505,459,734 354.7K this week

Included in Modpacks (1,840)

Show fewer
Create SMP Turkiye Create SMP Turkiye Farmer Academy Farmer Academy Cobblemoncolonies Cobblemoncolonies CobbledMon CobbledMon IsekaiANewWorld IsekaiANewWorld [Tensura] Multiversal Origins [Tensura] Multiversal Origins Project Heroes Project Heroes Tales of Horizon Tales of Horizon Bloom & Beyond Bloom & Beyond 💎 Legend Infinity Project 💎 Legend Infinity Project CaptCode's Just Create Easier CaptCode's Just Create Easier Cobbled RPG Cobbled RPG The House Diablo Cobblemon Experience The House Diablo Cobblemon Experience Time To Work Time To Work Ronin Frontiers Ronin Frontiers Create - The Adventurer Create - The Adventurer DarkSol DarkSol Craft Colonies Craft Colonies Mundo Mitico Mundo Mitico Faewilds SMP Faewilds SMP The Grand Quest The Grand Quest Better Fireteam Better Fireteam solo leveling the ragnarok solo leveling the ragnarok Cobblemon Netherite Cobblemon Netherite Simply Create SMP Simply Create SMP YUAL - Create w' Colony YUAL - Create w' Colony A2SMP A2SMP Nationcraft by Emmet Nationcraft by Emmet The Modded Rizoma DayZ The Modded Rizoma DayZ BoraLances Craft BoraLances Craft KubeSMP KubeSMP Community in the Skies (with Origins) Community in the Skies (with Origins) Rosecraft Reforged Rosecraft Reforged RequiemCraft RequiemCraft Forge-rune.fr Forge-rune.fr Kaelo's Fantasy RPG - Valthera Kaelo's Fantasy RPG - Valthera Castigo's Castigo's Sorcerer's Blade Sorcerer's Blade A Winterly Christmas World - WCW A Winterly Christmas World - WCW Rebirth RPG Rebirth RPG AstralisProject! AstralisProject! [ -NewFracTal-] [ -NewFracTal-] NAU NAU MineCity NewEra MineCity NewEra TakoPack Colonies 2 TakoPack Colonies 2 🚀 Tech & Industry: Beyond the Stars 🚀 Tech & Industry: Beyond the Stars Hephaestus Forge - Sky Hephaestus Forge - Sky Dimmas91: Legacy of Creation Dimmas91: Legacy of Creation ratt.co colonies ratt.co colonies Relic Realms [FORGE] RR1 Relic Realms [FORGE] RR1 Create block Create block Quebecs Goated Pack Quebecs Goated Pack Minecraft: Sensational Edition Minecraft: Sensational Edition Ducky's Fantasy Ducky's Fantasy The Sakura SMP The Sakura SMP team pkb pack team pkb pack SCBEE SCBEE NoSignal Infected NoSignal Infected Tensura - Tempest Origins Tensura - Tempest Origins MultiCraft: Realms & Rockets MultiCraft: Realms & Rockets Trolltopia Trolltopia Exodream Exodream Ooc Cobblemon Plus Expanded Ooc Cobblemon Plus Expanded Fallout Realms Fallout Realms OceanCastle-Modded Adventure OceanCastle-Modded Adventure Godzillawarz's Kitchen Sink Godzillawarz's Kitchen Sink LostCraft (2025) LostCraft (2025) Contemporary Spellcraft Contemporary Spellcraft Paleo Project 2 - Genesis Protocol Paleo Project 2 - Genesis Protocol CC - CreateCobble CC - CreateCobble Steampunk Wizard City Steampunk Wizard City Aeternam IV Aeternam IV ZooTech ZooTech Arcane Acres RPG 2 Arcane Acres RPG 2 Vox Terrae (O Recomeco) Vox Terrae (O Recomeco) Create in Wars Create in Wars XVIII-TheLunarSMP XVIII-TheLunarSMP Mantecraft Mantecraft Cobblemon Down The Kitchen Sink Cobblemon Down The Kitchen Sink Onion's Fantasy Pack Onion's Fantasy Pack Kingdom's Unbound Official Pack Kingdom's Unbound Official Pack Dreadforge Dreadforge Fever MC Fever MC GDSMP - Farm Fish Relax GDSMP - Farm Fish Relax HruskaMMO HruskaMMO Extra [Modified] Cobblemon Plus Extra [Modified] Cobblemon Plus WMI Experience WMI Experience Dimmas91 Pixelmon 2 Dimmas91 Pixelmon 2 Explore and Grow Explore and Grow Dank Division Dank Division The Fallen Worlds The Fallen Worlds Frontier of Creation Frontier of Creation Inquisition Perfected Inquisition Perfected Pandora's Cobblemon Pandora's Cobblemon Vani's Project Vani's Project AutoCrafted-Create & More! AutoCrafted-Create & More! Bitz Spoon Create Season 1 Bitz Spoon Create Season 1 TroulyCube TroulyCube Fleshmon Fleshmon Biggess Pack Cat Edition V2 Biggess Pack Cat Edition V2

External Resources

CurseForge Source Code Issues