From 267b4f00f7004b62c376d95ca49cf0523f0b0ea0 Mon Sep 17 00:00:00 2001
From: Mononaut <github@monospace.live>
Date: Mon, 12 Jan 2026 11:05:19 +0000
Subject: [PATCH] [monitoring] fix liquid health check hostnames

---
 backend/src/api/bitcoin/esplora-api.ts | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/backend/src/api/bitcoin/esplora-api.ts b/backend/src/api/bitcoin/esplora-api.ts
index fb8ee76b2..3cb0ad93b 100644
--- a/backend/src/api/bitcoin/esplora-api.ts
+++ b/backend/src/api/bitcoin/esplora-api.ts
@@ -253,7 +253,12 @@ class FailoverRouter {
   private async $updateFrontendGitHash(host: FailoverHost): Promise<void> {
     try {
       const url = `${host.publicDomain}/resources/config.js`;
-      const response = await this.pollConnection.get<string>(url, { timeout: config.ESPLORA.FALLBACK_TIMEOUT });
+      const response = await this.pollConnection.get<string>(
+        url, {
+          timeout: config.ESPLORA.FALLBACK_TIMEOUT,
+          headers: Common.isLiquid() ? { 'Host': 'liquid.network' } : undefined
+        }
+      );
       const match = response.data.match(/GIT_COMMIT_HASH\s*=\s*['"](.*?)['"]/);
       if (match && match[1]?.length) {
         host.hashes.frontend = match[1];
@@ -276,7 +281,7 @@ class FailoverRouter {
           path: '/en-US/resources/config.js',
           method: 'GET',
           headers: {
-            'Host': 'mempool.space'
+            'Host': Common.isLiquid() ? 'liquid.network' : 'mempool.space'
           },
           timeout: config.ESPLORA.FALLBACK_TIMEOUT,
         }, (res) => {
@@ -307,7 +312,12 @@ class FailoverRouter {
   private async $updateBackendVersions(host: FailoverHost): Promise<void> {
     try {
       const url = `${host.publicDomain}/api/v1/backend-info`;
-      const response = await this.pollConnection.get<any>(url, { timeout: config.ESPLORA.FALLBACK_TIMEOUT });
+      const response = await this.pollConnection.get<any>(
+        url, {
+          timeout: config.ESPLORA.FALLBACK_TIMEOUT,
+          headers: Common.isLiquid() ? { 'Host': 'liquid.network' } : undefined
+        }
+      );
       if (response.data?.gitCommit) {
         host.hashes.backend = response.data.gitCommit;
       }
@@ -322,7 +332,12 @@ class FailoverRouter {
   private async $updateSSRGitHash(host: FailoverHost): Promise<void> {
     try {
       const url = `${host.publicDomain}/ssr/api/status`;
-      const response = await this.pollConnection.get<any>(url, { timeout: config.ESPLORA.FALLBACK_TIMEOUT });
+      const response = await this.pollConnection.get<any>(
+        url, {
+          timeout: config.ESPLORA.FALLBACK_TIMEOUT,
+          headers: Common.isLiquid() ? { 'Host': 'liquid.network' } : undefined
+        }
+      );
       if (response.data?.gitHash) {
         host.hashes.ssr = response.data.gitHash;
       }