From e53852f056cb16c49c666a82d11f7b6f5055695d Mon Sep 17 00:00:00 2001
From: RJ Burnham <rj@consig.ai>
Date: Wed, 21 Aug 2024 22:58:55 +0100
Subject: [PATCH] Add support for configuring the IP address that is advertised
 to the API server. This is needed when running in fargate as ip.address()
 will return the wrong ip address.

---
 README.md                       | 1 +
 lib/config.js                   | 2 ++
 lib/utils/install-srf-locals.js | 4 +++-
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index e1adfd51..adf79ecf 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@ Configuration is provided via environment variables:
 |ENCRYPTION_SECRET| secret for credential encryption(JWT_SECRET is deprecated) |yes|
 |GOOGLE_APPLICATION_CREDENTIALS| path to gcp service key file|yes|
 |HTTP_PORT| tcp port to listen on for API requests from jambonz-api-server|yes|
+|HTTP_IP| IP Address for API requests from jambonz-api-server |no|
 |JAMBONES_GATHER_EARLY_HINTS_MATCH| if true and hints are provided, gather will opportunistically review interim transcripts if possible to reduce ASR latency |no|
 |JAMBONES_FREESWITCH| IP:port:secret for Freeswitch server (e.g. '127.0.0.1:8021:JambonzR0ck$'|yes|
 |JAMBONES_LOGLEVEL| log level for application, 'info' or 'debug'|no|
diff --git a/lib/config.js b/lib/config.js
index a909a41c..8f37ea6e 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -73,6 +73,7 @@ const JAMBONES_LOGLEVEL = process.env.JAMBONES_LOGLEVEL || 'info';
 const JAMBONES_INJECT_CONTENT = process.env.JAMBONES_INJECT_CONTENT;
 
 const PORT = parseInt(process.env.HTTP_PORT, 10) || 3000;
+const HTTP_IP = process.env.HTTP_IP;
 const HTTP_PORT_MAX = parseInt(process.env.HTTP_PORT_MAX, 10);
 
 const K8S = process.env.K8S;
@@ -170,6 +171,7 @@ module.exports = {
   JAMBONES_CLUSTER_ID,
   PORT,
   HTTP_PORT_MAX,
+  HTTP_IP,
   K8S,
   K8S_SBC_SIP_SERVICE_NAME,
   JAMBONES_SUBNET,
diff --git a/lib/utils/install-srf-locals.js b/lib/utils/install-srf-locals.js
index e6374b30..06c84e8c 100644
--- a/lib/utils/install-srf-locals.js
+++ b/lib/utils/install-srf-locals.js
@@ -12,6 +12,7 @@ const {
   JAMBONES_TIME_SERIES_HOST,
   JAMBONES_ESL_LISTEN_ADDRESS,
   PORT,
+  HTTP_IP,
   NODE_ENV,
 } = require('../config');
 const Registrar = require('@jambonz/mw-registrar');
@@ -193,7 +194,8 @@ function installSrfLocals(srf, logger) {
 
   let localIp;
   try {
-    localIp = ip.address();
+    // Either use the configured IP address or call ip.address() to find it
+    localIp = HTTP_IP || ip.address();
   } catch (err) {
     logger.error({err}, 'installSrfLocals - error detecting local ipv4 address');
   }