Connectivity Mod in Project Infinity 0.1

Same as in the All the Mods 10 8.1 guide

Connectivity Mod is part of the pack, and this version ships Connectivity Mod 7.6 (the file is connectivity-1.21.1-7.6.jar). It has been in the pack since version 2.25 or earlier, so it's a long-standing part of the mod list rather than a recent addition.^[1]

Unverified I couldn't confirm what Connectivity Mod does in the pack. There is no platform description or in-jar guidebook to draw from, so I'm not guessing at its features, items or who it's meant for.

Unverified I also found no information on where the mod fits in the pack's progression. No quests involving it turned up, and it doesn't appear to be on the ATM Star path, so treat it as outside the main questline until you see otherwise in-game.

Good news first: Connectivity doesn't ask you to craft anything to get going. From what I can confirm for this pack, it's a networking helper that works through one config file, so your first steps are about knowing what it's already doing for you and when to touch it.^[2]

Unverified The sources here show no items, recipes or quests for this mod in this pack, so there is no crafting order to follow.

First, know what's already switched on

The pack ships this config with several limit-related options already enabled. disableLoginLimits.disableLoginLimits is true, which turns off the login packet size limits.^[2]

disablePacketLimits.disablePacketLimits is also true, which turns off the play packet size limits. Its description ties this to the "Badly compressed packet" error.^[2]

disableChatVerificationDisconnect.disableChatVerificationDisconnect is true too. It's a client-side option that stops you being disconnected over chat message verification problems.^[2]

Notice the timeouts the pack changed

disconnectTimeout.disconnectTimeout is set to 120 in this pack, which is higher than the default its description gives. That's how long the game waits before disconnecting players in game.^[2]

logintimeout.logintimeout is set to 240 seconds in this pack, also above the default its description gives. It's the maximum login time, so you get more room before a slow login is dropped.^[2]

Server owners: check the proxy whitelist

Malformed traffic detection is on (malformedtraffic.enabled is true). If you run a proxy such as Velocity, add its IP to malformedtraffic.proxywhitelist, which is empty in this pack, so the proxy's address doesn't get blocked.^[2]

Turn on logging only when you're troubleshooting

If you hit a connection problem, set debugPrintMessages.debugPrintMessages to true for extra networking error logging. It's false in this pack.^[2]

showFullResourceLocationException.showFullResourceLocationException is also false, and enabling it shows the full log output for resource location exceptions.^[2]

Here's the honest picture for this one: the only thing the sources give us for this mod is its config file, and everything in it is about networking, meaning how the server and clients handle logins, packets and timeouts. There are no machines, multiblocks or automation details to cover, so this section walks through the settings the pack ships.^[2]

Timeouts and packet history

• disconnectTimeout.disconnectTimeout is the in-game disconnect timeout for players, in seconds. The pack sets it to 120, which is longer than the default its description mentions.^[2]
• logintimeout.logintimeout is the maximum login timeout in seconds. The pack sets it to 240, which is also longer than the default its description mentions.^[2]
• packetHistoryMinutes.packetHistoryMinutes is how many minutes of network packet history are kept. The pack uses 5.^[2]

Packet and login size limits

• disableLoginLimits.disableLoginLimits is true in the pack. It disables the login packet size limits, and the description ties it to the error about a payload being too large.^[2]
• disablePacketLimits.disablePacketLimits is true in the pack. It disables the play packet size limits, and the description ties it to the "Badly compressed packet" error.^[2]

Chat verification and malformed traffic

disableChatVerificationDisconnect.disableChatVerificationDisconnect is true in the pack. It is a client-side option that stops players being disconnected when chat message verification has problems.^[2]

malformedtraffic.enabled is also true. Its description says it detects and blocks malformed and/or malicious traffic.^[2]

Logging options

These options only affect what ends up in the logs, and both are false in the pack. debugPrintMessages.debugPrintMessages enables additional debug logging for networking errors. showFullResourceLocationException.showFullResourceLocationException shows the full log output for all resource location exceptions.^[2]

Unverified Anything beyond these config options, such as machines, multiblocks, power, fluid or item handling, is not described in the sources available for this mod.

Connectivity is all about keeping players connected on big modpacks, and everything lives in one file, config/connectivity.json. A couple of timeout values were raised by the pack above the defaults the option descriptions give, so let's start there.^[2]

Values this pack changed

• disconnectTimeout.disconnectTimeout is set to 120 in this pack. That is higher than the default its description gives, so the game waits longer before disconnecting a player.^[2]
• logintimeout.logintimeout is set to 240 in this pack. This is the max login timeout in seconds, and the pack's value is higher than the default in its description. That gives slow or heavy logins more room before they fail.^[2]

Packet and login limits

These options are all left at true, which matches the default in each description. Disabling the limits is aimed at specific errors that big packs can hit.^[2]

• disableLoginLimits.disableLoginLimits is true. It turns off the login packet size limits, which is aimed at the "Payload may not be larger than ... bytes" IOException.^[2]
• disablePacketLimits.disablePacketLimits is true. It turns off the play packet size limits, aimed at the "Badly compressed packet" error.^[2]
• disableChatVerificationDisconnect.disableChatVerificationDisconnect is true. This one is clientside and stops players being disconnected over chat message verification problems.^[2]

Traffic protection

malformedtraffic.enabled is true, so detection and blocking of malformed or malicious traffic is on. If you run the server behind a proxy such as Velocity, add the proxy's IP to malformedtraffic.proxywhitelist so it doesn't get blocked. In this pack the whitelist is empty.^[2]

Logging and debugging

• debugPrintMessages.debugPrintMessages is false, which matches the default. Turn it on for extra logging of networking errors. The chat verification option's description also says to enable it to see the message causing issues.^[2]
• showFullResourceLocationException.showFullResourceLocationException is false, the default. Enable it to see the full log output for all resource location exceptions.^[2]
• packetHistoryMinutes.packetHistoryMinutes is 5, which is the default. It sets how many minutes of network packet history are saved.^[2]