Reintroduction of the MULTIHOME parameter (#384)

* Reintroduction of the MULTIHOME parameter * Simplify multihome check + support completely disabling it --------- Co-authored-by: Robert Thomas <[email protected]>
wolveix · Jan 24, 2025 · b38a1b1 · b38a1b1
1 parent d55afb9
commit b38a1b1
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diff --git a/Dockerfile b/Dockerfile
@@ -13,6 +13,7 @@ ENV AUTOSAVENUM="5" \
     MAXOBJECTS="2162688" \
     MAXPLAYERS="4" \
     MAXTICKRATE="30" \
+    MULTIHOME="::" \
     PGID="1000" \
     PUID="1000" \
     SERVERGAMEPORT="7777" \

diff --git a/README.md b/README.md
@@ -191,10 +191,10 @@ helm install satisfactory k8s-at-home/satisfactory -f values.yaml
 | `MAXOBJECTS`            | `2162688` | set the object limit for your server                      |
 | `MAXPLAYERS`            |    `4`    | set the player limit for your server                      |
 | `MAXTICKRATE`           |   `30`    | set the maximum sim tick rate for your server             |
+| `MULTIHOME`             |   `::`    | set the server's listening interface (usually not needed) |
 | `PGID`                  |  `1000`   | set the group ID of the user the server will run as       |
 | `PUID`                  |  `1000`   | set the user ID of the user the server will run as        |
 | `SERVERGAMEPORT`        |  `7777`   | set the game's port                                       |
-| `SERVERIP`              | `0.0.0.0` | set the game's ip (usually not needed)                    |
 | `SERVERSTREAMING`       |  `true`   | toggle whether the game utilizes asset streaming          |
 | `SKIPUPDATE`            |  `false`  | avoid updating the game on container start/restart        |
 | `STEAMBETA`             |  `false`  | set experimental game version                             |

diff --git a/run.sh b/run.sh
@@ -45,6 +45,33 @@ else
     DISABLESEASONALEVENTS=""
 fi
 
+# Validate and set multihome address for network connections (useful for v6-only networks).
+if [[ "$MULTIHOME" != "" ]]; then
+    if [[ "$MULTIHOME" != "" ]] && [[ "$MULTIHOME" != "::" ]]; then
+        # IPv4 regex matches addresses from 0.0.0.0 to 255.255.255.255.
+        IPv4='^([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$'
+
+        # IPv6 regex supports full and shortened formats like 2001:db8::1.
+        IPv6='^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:))$'
+
+        if [[ "$MULTIHOME" =~ $IPv4 ]]; then
+            printf "Multihome will accept IPv4 connections only\n"
+        elif [[ "$MULTIHOME" =~ $IPv6 ]]; then
+            printf "Multihome will accept IPv6 connections only\n"
+        else
+            printf "Invalid multihome address: %s (defaulting to ::)\n" "$MULTIHOME"
+            MULTIHOME="::"
+        fi
+    fi
+
+    if [[ "$MULTIHOME" == "::" ]]; then
+        printf "Multihome will accept IPv4 and IPv6 connections\n"
+    fi
+
+    printf "Setting multihome to %s\n" "$MULTIHOME"
+    MULTIHOME="-multihome=$MULTIHOME"
+fi
+
 ini_args=(
   "-ini:Engine:[/Script/FactoryGame.FGSaveSession]:mNumRotatingAutosaves=$AUTOSAVENUM"
   "-ini:Engine:[/Script/Engine.GarbageCollectionSettings]:gc.MaxObjectsInEditor=$MAXOBJECTS"
@@ -58,6 +85,7 @@ ini_args=(
   "-ini:Game:[/Script/Engine.GameSession]:MaxPlayers=$MAXPLAYERS"
   "-ini:GameUserSettings:[/Script/Engine.GameSession]:MaxPlayers=$MAXPLAYERS"
   "$DISABLESEASONALEVENTS"
+  "$MULTIHOME"
 )
 
 if [[ "${SKIPUPDATE,,}" != "false" ]] && [ ! -f "/config/gamefiles/FactoryServer.sh" ]; then