add velocity

the server now utilizes the velocity proxy for
- domain based connection instead of ports (called forced-hosts in velocity)
- a fancy motd message indicating when only the minecraft server is down, but not the host system

server/MMS.container

@@ -1,12 +1,14 @@
 [Unit]
 Description=Modded Minecraft Server via Podman managed by Systemd
 Documentation=https://git.nanody.de/anonoe/MMS
+Wants=velocity.service
+After=velocity.service
 
 [Container]
 Image=git.nanody.de/anonoe/jre-alpine:latest
 AutoUpdate=registry
-PublishPort=25565:25565/tcp
-PublishPort=24454:24454/udp
+PublishPort=25566:25565/tcp
+PublishPort=24455:24455/udp
 UserNS=keep-id
 Mount=type=bind,src=/PATH/TO/server,dst=/mnt/server
 Mount=type=bind,src=/PATH/TO/rcon,dst=/mnt/rcon

server/compose.yml

@@ -1,14 +0,0 @@
-version: '3.8'
-services:
-  jre-hl-mc-MMS:
-    image: alp-jre-21-hl:latest
-    volumes:
-      - ./server:/mnt/server
-    working_dir: /mnt/server
-    command: ["java", "-Xmx4G", "-Xms1G", "-jar", "minecraft_server.jar", "--nogui"]
-    ports:
-      - "25565:25565/tcp" # minecraft
-      - "24454:24454/udp" # simple voicechat
-    tty: true
-    # restart: unless-stopped
-

server/podman-run.sh

@@ -1,12 +0,0 @@
-podman run \
- --rm \
- --name jre-hl-mc-MMS \
- --tty \
- --interactive \
- --publish 25565:25565/tcp \
- --publish 24454:24454/udp \
- --volume ./server:/mnt/server \
- --workdir /mnt/server \
-alp-jre-21-hl:latest \
-java -Xmx4G -Xms1G -jar minecraft_server.jar --nogui
-

server/server/config/FabricProxy-Lite.toml

@@ -0,0 +1,4 @@
+hackOnlineMode = true
+hackEarlySend = false
+hackMessageChain = false
+secret = "PUT SOMETHING HERE"

server/server/config/voicechat/voicechat-server.properties

@@ -6,7 +6,7 @@
 # Set this to '-1' to use the same port number that is used by the Minecraft server.
 # However, it is strongly recommended NOT to use the same port number because UDP on
 # it is also used by default for the server query. Doing so may crash the server!
-port=24454
+port=24455
 # The server IP address to bind the voice chat to
 # Leave blank to use the 'server-ip' property from the 'server.properties' config file
 # To bind to the wildcard IP address, use '*'

server/velocity.container

@@ -0,0 +1,23 @@
+[Unit]
+Description=Minecraft Proxy Velocity via Podman managed by Systemd
+Documentation=https://docs.papermc.io/velocity/
+
+[Container]
+Image=git.nanody.de/anonoe/jre-alpine:latest
+AutoUpdate=registry
+PublishPort=25565:25565/tcp
+PublishPort=24454:24454/udp
+UserNS=keep-id
+Mount=type=bind,src=PATH/TO/velocity,dst=/mnt/server
+WorkingDir=/mnt/server
+PodmanArgs=--tty --interactive
+Exec=java -Xms500M -Xmx500M -XX:+UseG1GC -XX:G1HeapRegionSize=4M -XX:+UnlockExperimentalVMOptions -XX:+ParallelRefProcEnabled -XX:+AlwaysPreTouch -XX:MaxInlineLevel=15 -jar velocity.jar
+
+[Service]
+SuccessExitStatus=0 143
+TimeoutStartSec=480
+TimeoutStopSec=480
+
+[Install]
+# Start by default on boot
+WantedBy=default.target

server/velocity/plugins/voicechat/voicechat-proxy.properties

@@ -0,0 +1,7 @@
+# Simple Voice Chat proxy config v2.6.4
+
+# The port number to use for the voice chat communication.
+# Audio packets are always transmitted via the UDP protocol on the port number
+# specified here, independently of other networking used for the game server.
+# Set this to '-1' to use the same port number as the one used by the proxy.
+port=24454

server/velocity/velocity.jar

@@ -0,0 +1 @@
+velocity-3.4.0-SNAPSHOT-558.jar

server/velocity/velocity.toml

@@ -0,0 +1,39 @@
+# Config version. Do not change this
+config-version = "2.7"
+
+# What should be the MOTD? This gets displayed when the player adds your server to
+# their server list. Only MiniMessage format is accepted.
+motd = "<#09add3>The Server is down (╯°□°)╯︵ ┻━┻"
+
+# Should we forward IP addresses and other data to backend servers?
+# Available options:
+# - "none":        No forwarding will be done. All players will appear to be connecting
+#                  from the proxy and will have offline-mode UUIDs.
+# - "legacy":      Forward player IPs and UUIDs in a BungeeCord-compatible format. Use this
+#                  if you run servers using Minecraft 1.12 or lower.
+# - "bungeeguard": Forward player IPs and UUIDs in a format supported by the BungeeGuard
+#                  plugin. Use this if you run servers using Minecraft 1.12 or lower, and are
+#                  unable to implement network level firewalling (on a shared host).
+# - "modern":      Forward player IPs and UUIDs as part of the login process using
+#                  Velocity's native forwarding. Only applicable for Minecraft 1.13 or higher.
+player-info-forwarding-mode = "modern"
+
+[servers]
+# Configure your servers here. Each key represents the server's name, and the value
+# represents the IP address of the server to connect to.
+#lobby = "127.0.0.1:30066"
+#factions = "127.0.0.1:30067"
+#minigames = "127.0.0.1:30068"
+mms = "host.containers.internal:25566"
+# In what order we should try servers when a player logs in or is kicked from a server.
+try = [
+    "mms"
+]
+
+[forced-hosts]
+"nanody.de" = [
+    "mms"
+]
+"mms.nanody.de" = [
+    "mms"
+]