Ryl2 File Server

The RYL2 file server reads a master index called Server.dat. This file tells the file server which CRC (Cyclic Redundancy Check) values to expect. If a client’s .zsc file has a different CRC than what the file server lists, the client will either crash or fail to connect with a "File Mismatch" error.

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The RYL2 File Server performs two primary functions:

In many RYL2 private-server or small-scale deployments, the file server is combined with the login and game server processes on a single physical or virtual machine. ryl2 file server

Run these commands in PowerShell as Admin:

New-NetFirewallRule -DisplayName "RYL2 TCP" -Direction Inbound -Protocol TCP -LocalPort 4465 -Action Allow
New-NetFirewallRule -DisplayName "RYL2 UDP" -Direction Inbound -Protocol UDP -LocalPort 4466 -Action Allow

ryl2d --port 4465 --storage /srv/ryl2 --max-connections 128

To run as a systemd service:

sudo nano /etc/systemd/system/ryl2.service

Paste:

[Unit]
Description=RYL2 File Server
After=network.target
[Service]
ExecStart=/usr/local/bin/ryl2d --port 4465 --storage /srv/ryl2
Restart=always
User=nobody
[Install]
WantedBy=multi-user.target

Then:

sudo systemctl enable ryl2.service
sudo systemctl start ryl2.service

Never send the entire client (2GB+). Use binary diff patching or file-replacement patches.

For RYL2, stick to full replacement unless you have a commercial budget. Diff patching is fragile when dealing with encrypted GRFs. The RYL2 file server reads a master index called Server