From e849ac7f666d4e4e3099f0adac13e441ae3e94be Mon Sep 17 00:00:00 2001
From: Ben Harris <ben@tilde.team>
Date: Wed, 24 May 2023 18:53:37 -0400
Subject: [PATCH] add listenhost option (#28)

(cherry picked from commit 1b2f04af6af57b36e800903b943aa4e01023b341)
---
 .env.example  | 3 +++
 src/config.ts | 1 +
 src/index.ts  | 3 ++-
 src/server.ts | 2 +-
 4 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/.env.example b/.env.example
index 4cfdab3..49f71dc 100644
--- a/.env.example
+++ b/.env.example
@@ -1,6 +1,9 @@
 # Whichever port you want to run this on 
 FEEDGEN_PORT=3000
 
+# Change this to use a different bind address
+FEEDGEN_LISTENHOST="localhost"
+
 # Set to something like db.sqlite to store persistently
 FEEDGEN_SQLITE_LOCATION=":memory:"
 
diff --git a/src/config.ts b/src/config.ts
index 0ad8535..98c22e6 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -9,6 +9,7 @@ export type AppContext = {
 
 export type Config = {
   port: number
+  listenhost: string
   hostname: string
   sqliteLocation: string
   subscriptionEndpoint: string
diff --git a/src/index.ts b/src/index.ts
index 4960044..aa34a97 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -8,6 +8,7 @@ const run = async () => {
     maybeStr(process.env.FEEDGEN_SERVICE_DID) ?? `did:web:${hostname}`
   const server = FeedGenerator.create({
     port: maybeInt(process.env.FEEDGEN_PORT) ?? 3000,
+    listenhost: maybeStr(process.env.FEEDGEN_LISTENHOST) ?? 'localhost',
     sqliteLocation: maybeStr(process.env.FEEDGEN_SQLITE_LOCATION) ?? ':memory:',
     subscriptionEndpoint:
       maybeStr(process.env.FEEDGEN_SUBSCRIPTION_ENDPOINT) ??
@@ -17,7 +18,7 @@ const run = async () => {
   })
   await server.start()
   console.log(
-    `🤖 running feed generator at http://localhost:${server.cfg.port}`,
+    `🤖 running feed generator at http://${server.cfg.listenhost}:${server.cfg.port}`,
   )
 }
 
diff --git a/src/server.ts b/src/server.ts
index 4e1449c..90a227b 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -64,7 +64,7 @@ export class FeedGenerator {
   async start(): Promise<http.Server> {
     await migrateToLatest(this.db)
     this.firehose.run()
-    this.server = this.app.listen(this.cfg.port)
+    this.server = this.app.listen(this.cfg.port, this.cfg.listenhost)
     await events.once(this.server, 'listening')
     return this.server
   }