Highly Performant & Scalable Ultima Online Server Emulator
https://www.modernuo.com
c-sharpcsharpcsharp-coredotnetdotnet-coreemulatorgplgplv3mmommo-enginemmorpgmmorpg-serveronlinerpgrunuoserverservuoultimaultima-onlineuo
6ffb63ec82
### Summary - Bump IORingGroup 1.0.0 → 1.0.1 — fixes a disconnect handling bug in the native ring layer - Fix ghost NetStates — Dispose() set _running = false before checking it, so the "force immediate disconnect" path was dead code. Capture wasRunning before clearing it, add [Obsolete] guard, and route internal callers through DisposeInternal() - Fix unauthenticated socket cleanup — graceful disconnect on unauthed connections could get stuck with pending sends; now force-immediate after Disconnect() if DisconnectPending is already set - Replace ConcurrentQueue<NetState> _disposed with Queue<NetState> — server is single-threaded; moved the field into the Network partial class where it's consumed - Move ConnectingSocketIdleLimit into the Network partial class alongside DisconnectUnattachedSockets - Reset activity timer on receive, not just send — receiving data directly proves liveness instead of relying on the ping→pong→send round-trip to reset the timer - Move CheckAllAlive from Timer into Slice — the timer fired before I/O completions were processed, so after server stalls (world saves), buffered client pings hadn't reset timestamps yet, causing false disconnects. Now runs at the end of Slice() after all recv completions are handled - Lower inactivity timeout 90s → 30s, check interval 90s → 5s — clients ping every ~1s, so 30s of silence is ~30 missed pings; worst-case detection drops from ~180s to ~35s - Simplify CheckAlive — early-return when socket is null or alive; force-kill stuck DisconnectPending sockets immediately instead of calling Disconnect() again - Remove unused imports from GameEncryption.cs |
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| .config | ||
| .github | ||
| Distribution/Data | ||
| docs | ||
| Projects | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| azure-pipelines.yml | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| Directory.Build.props | ||
| FAQ.md | ||
| global.json | ||
| LICENSE | ||
| mkdocs.yml | ||
| ModernUO.sln | ||
| publish.cmd | ||
| publish.sh | ||
| README.md | ||
| rider-settings.zip | ||
| Rules.ruleset | ||
| SPONSORS.md | ||
| stylecop.json | ||
| THIRD-PARTY-NOTICES | ||
| version.json | ||
ModernUO 
Ultima Online Server Emulator for the modern era!
Requirements
Supported Operating Systems
Required Frameworks
All Operating Systems
Windows
Development
Supported IDEs
Getting Started
- Install prerequisite requirements
- Clone this repository (or download the latest):
git clone https://github.com/modernuo/ModernUO.git
- Open
ModernUO.slnto start developing
Building/Publishing
- Run
./publish.cmd [release|debug (default: release)] [os] [arch (default: x64)]os- Supported operating systemsarchx64- Intel/AMD 64-bitarm64- ARM 64-bit (Windows not supported)
Linux Prerequisites
Fedora, CentOS, RHEL, etc
dnf upgrade --refresh -y
# CentOS does not come with EPEL enabled
dnf install -y epel-release epel-next-release
dnf install -y findutils libicu libdeflate-devel zstd libargon2-devel liburing-devel
Ubuntu, Debian, etc
apt-get update -y
apt-get install -y libicu-dev libdeflate-dev zstd libargon2-dev liburing-dev
OSX Requirements
brew install icu4c libdeflate zstd argon2
Running the Server
- Follow the publish instructions
- Run
ModernUO.exeordotnet ModernUO.dllfrom theDistributiondirectory
Troubleshooting / FAQ
- See FAQ
Want to sponsor?
Thank you for supporting us! You can find out how by visiting the sponsors page.
Collaborators
Thanks
- RunUO Team & Community
- Voxpire, the ServUO Team & Community
- Karasho, Jaedan and the ClassicUO Community
Development Tools & Plugins provided with ♥ by
