Use an internal url for the rest server to register for messages

docker/docker-compose/docker-compose.yml

@@ -19,6 +19,7 @@ services:
     ports:
       - "7880:7880"
     environment:
+      - DOCSPELL_SERVER_INTERNAL__URL=http://docspell-restserver:7880
       - DOCSPELL_SERVER_ADMIN__ENDPOINT_SECRET=admin123
       - DOCSPELL_SERVER_AUTH_SERVER__SECRET=
       - DOCSPELL_SERVER_BACKEND_JDBC_PASSWORD=dbpass

modules/restserver/src/main/resources/reference.conf

@@ -15,6 +15,12 @@ docspell.server {
   # to some other value, the request is not inspected.
   base-url = "http://localhost:7880"
 
+  # This url is the base url for reaching this server internally.
+  # While you might set `base-url` to some external address (like
+  # mydocs.myserver.com), the `internal-url` must be set such that
+  # other nodes can reach this server.
+  internal-url = "http://localhost:7880"
+
   # Where the server binds to.
   bind {
     address = "localhost"

modules/restserver/src/main/scala/docspell/restserver/Config.scala

@@ -22,6 +22,7 @@ case class Config(
     appName: String,
     appId: Ident,
     baseUrl: LenientUri,
+    internalUrl: LenientUri,
     bind: Config.Bind,
     backend: BackendConfig,
     auth: Login.Config,
@@ -39,7 +40,7 @@ case class Config(
   def pubSubConfig(headerValue: Ident): PubSubConfig =
     PubSubConfig(
       appId,
-      baseUrl / "internal" / "pubsub",
+      internalUrl / "internal" / "pubsub",
       100,
       InternalHeader.header(headerValue.id)
     )