evilight
97eff6517e
LoginServer.exec() -> checkServerHealth() -> isPortInUse() shelled out to `lsof -i tcp:<port>` through /bin/bash and read the child's stdout until EOF. There is no timeout and no waitFor(), so a child that blocks is fatal: in the container lsof was observed stuck in uninterruptible I/O (D state) while it was scanning the busy world server. The login server then never returned from its startup path, the accept loop never started, and clients could open a TCP connection to 6000 and wait forever for the 100 byte DH handshake, surfacing as "Failed to open a server connection" after the client's own timeout. A container restart was the only way out. Replace the external probe with a bind probe: it cannot hang, needs no external tool, and SO_REUSEADDR still does not allow stealing a port that is actively listening, so a successful bind keeps meaning "free".
Magicbane Open-Source MMO Project
The Community written Shadowbane emulator
Magicbane
Public Repository
magicbot@magicbane.com
Magicbane is an emulator for the long dead but much beloved Ubisoft MMO, Shadowbane. The project was founded in 2013 with the concept of free availability of gameplay; players unencumbered by any factor other than a desire to again play a game they once loved. A game where the developers do not play is guaranteed to be the fairest game.
The Magicbane Team has wanted to open source Shadowbane for half a decade. We are excited to now finally have the opportunity, along with some new technology, to truly democratize Shadowbane.
- Written in some 80k lines of Java 8 and bash.
- Project with real infrastructure; Production and development servers supporting multiple containerized apps.
- MagicBox container technology enables instant deployment and trouble free development on modest hardware.
- MagicBox plugin capability allows for new and interesting player experiences.
Contributing
- Project is released under an MIT license. Please see the LICENSE file.
- Inbound == Outbound.
- IntelliJ is the supported IDE.
- Write code today see it running on the Magicbane production server tomorrow.
Support
Documentation is available through the Magicbane Wiki and Discord server.