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XiPackets

XiPackets documents reverse-engineered Final Fantasy XI network behavior across its lobby, world, cache and patch services. Its notes cover packet definitions, server roles, message exchanges, and the compression, encryption and hashing used by those services.

Targets: Game · Protocol
Category: Protocol analysis tools
Relationship: Learning resource
Sources reviewed: 2026-11-06

Stars: 55
Last commit: 2026-03-11
License (GitHub): AGPL-3.0

GitHub data as of 2026-11-09

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Requirements & limits

License: AGPL-3.0 license.

Cite

BibTeX

@misc{xipackets,
  title = {{XiPackets}},
  howpublished = {\url{https://github.com/atom0s/XiPackets}},
  url = {https://github.com/atom0s/XiPackets},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/xipackets/}}
}

Plain text

XiPackets. https://github.com/atom0s/XiPackets (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/xipackets/

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Primary sources

README.md GitHub · atom0s/XiPackets · Revision ebe2216
lobby/Protocol.md GitHub · atom0s/XiPackets · Revision ebe2216