901,955 Downloads Last Updated: Sep 20, 2021 Game Version: 1.17.1

Lightweight mod which solves several connection problems like DecoderException, Packet size larget than X bytes, Payload too large and more.

All these are configurable:


  • 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

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.


Network stats:
Client: show outgoing traffic:  /connectivity packetsClient

Messages sent by the client

Server: Traffic of all players:  /connectivity packetsAllPlayers
Player traffic list

 /connectivity packetsPlayer Dev

Server: Total traffic:  /connectivity packetsSummary

Packet overview over all packets sent in total