Derive RPC readiness probe and shutdown host from rpc-bind-address

README.md

@@ -334,6 +334,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **01.08.26:** - Derive the RPC readiness check and shutdown request from `rpc-bind-address`/`rpc-url` instead of hardcoding localhost, and raise the service finish timeout.
 * **31.05.26:** - Bind RPC to IPv6 interface by default, fall back to IPv4 if unavailable.
 * **29.11.24:** - Fix PEERPORT setting.
 * **07.10.23:** - Install unrar from [linuxserver repo](https://github.com/linuxserver/docker-unrar).

readme-vars.yml

@@ -106,6 +106,7 @@ init_diagram: |
   "transmission:latest" <- Base Images
 # changelog
 changelogs:
+  - {date: "01.08.26:", desc: "Derive the RPC readiness check and shutdown request from `rpc-bind-address`/`rpc-url` instead of hardcoding localhost, and raise the service finish timeout."}
   - {date: "31.05.26:", desc: "Bind RPC to IPv6 interface by default, fall back to IPv4 if unavailable."}
   - {date: "29.11.24:", desc: "Fix PEERPORT setting."}
   - {date: "07.10.23:", desc: "Install unrar from [linuxserver repo](https://github.com/linuxserver/docker-unrar)."}

root/etc/s6-overlay/s6-rc.d/svc-transmission/finish

@@ -3,11 +3,18 @@
 
 pid=$(pidof transmission-daemon)
 PORT=$(jq '.["rpc-port"]' /config/settings.json)
+HOST=$(jq -r '.["rpc-bind-address"] // empty' /config/settings.json | tr -d '[]')
+URL=$(jq -r '.["rpc-url"] // "/transmission/"' /config/settings.json)
+
+case "${HOST}" in
+    "" | 0.0.0.0 | ::) HOST="127.0.0.1" ;;
+    *:*) HOST="[${HOST}]" ;;
+esac
 
 if [[ -n "$USER" ]] && [[ -n "$PASS" ]]; then
-    /usr/bin/transmission-remote 127.0.0.1:${PORT:-9091} -n "$USER":"$PASS" --exit
+    /usr/bin/transmission-remote "http://${HOST}:${PORT:-9091}${URL%/}" -n "$USER":"$PASS" --exit
 else
-    /usr/bin/transmission-remote 127.0.0.1:${PORT:-9091} --exit
+    /usr/bin/transmission-remote "http://${HOST}:${PORT:-9091}${URL%/}" --exit
 fi
 
 tail --pid=${pid} -f /dev/null

root/etc/s6-overlay/s6-rc.d/svc-transmission/run

@@ -2,13 +2,18 @@
 # shellcheck shell=bash
 
 PORT=$(jq '.["rpc-port"]' /config/settings.json)
+HOST=$(jq -r '.["rpc-bind-address"] // empty' /config/settings.json | tr -d '[]')
+
+case "${HOST}" in
+    "" | 0.0.0.0 | ::) HOST="localhost" ;;
+esac
 
 if [[ -z ${LSIO_NON_ROOT_USER} ]]; then
-    s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z localhost ${PORT:-9091}" \
+    s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z ${HOST} ${PORT:-9091}" \
         s6-setuidgid abc /usr/bin/transmission-daemon \
         -g /config -f
 else
-    s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z localhost ${PORT:-9091}" \
+    s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z ${HOST} ${PORT:-9091}" \
         /usr/bin/transmission-daemon \
         -g /config -f
 fi

root/etc/s6-overlay/s6-rc.d/svc-transmission/timeout-finish

@@ -0,0 +1 @@
+30000