ViaFabric

ViaFabric

Mods
709k Downloads

Fails on e4mc and Essential regardless of client-side modes

Kichura opened this issue ยท 4 comments

commented

/viaversion dump Output

https://dump.viaversion.com/98fd26684595cf16bd6a36c39d498ca4051e74a659e32010566748775b1c82bb

Console Error

(No console errors were discovered during tests)

Bug Description

When opening the singleplayer to LAN whilst ViaFabric is deployed - Players are able to join properly using the required extensions that the server owner has also included in their modpack(s) which is ViaBackwards and optionally ViaRewind,

However when combining it with e4mc / essential mod, Both will cancel out ViaFabric's translation attempts and instead fallback to vanilla's "Outdated Client!" behavior instead.

Steps to Reproduce

  1. Get a 1.19.4 client and 1.18.2 client respectively,
  2. Deploy ViaFabric, ViaBackwards and either e4mc or essential mod onto the 1.19.4 client,
  3. Open any world on the 1.19.4 client and request it to be opened to LAN,
  4. Attempt to join the server using 1.18.2 client by using e4mc's IP or essential's friends system,
  5. Expect a kick from there.

Expected Behavior

ViaFabric is able to communicate with e4mc and essential mod properly and continues translating.

Additional Server Info

  1. The server is not running on a proxy,
  2. Two tests were platformed so far:

ViaFabric, ViaBackwards with e4mc,
and same thing again as above but instead essential mod was used.

  1. Client-Side was active during these attempts.

Checklist

  • I have checked if this is specific to ViaFabric platform, and doesn't happen when running it on other platforms (Paper/Sponge/Velocity/Waterfall).
  • I have included a ViaVersion dump.
  • If applicable, I have included a paste (not a screenshot) of the error.
  • I have tried the latest build(s) from https://ci.viaversion.com/ and the issue still persists.
commented

Something else i will have to point out in this entire issue:

  1. Essential mod is entirely closed-source, meaning it will be difficult to troubleshoot this mod due to how complicated it is,
  2. e4mc is open source but on dedicated GitTea instance, But this one reveals a generated sub-domain upon opening to LAN.
commented

try using world host

Make sure to open mod menu config and turn off try Upnp

commented

try using world host

Make sure to open mod menu config and turn off try Upnp

This mod works properly without issues during testing.

commented

Since these two mods essentially use a different method for connectivity, will not be fixed.