From ac4e3e8ec94a5e11384642b23d0ecea3d2edef3a Mon Sep 17 00:00:00 2001
From: Christopher Rogers <chrissrogers@gmail.com>
Date: Sat, 9 Sep 2023 00:50:53 -0700
Subject: [PATCH] Adds hostname configuration pass-through

---
 lib/recurly.js            |  2 ++
 lib/recurly/request.js    |  4 ++++
 test/unit/request.test.js | 10 ++++++++++
 3 files changed, 16 insertions(+)

diff --git a/lib/recurly.js b/lib/recurly.js
index 114ab927d..01e017e82 100644
--- a/lib/recurly.js
+++ b/lib/recurly.js
@@ -234,6 +234,8 @@ export class Recurly extends Emitter {
 
     if (options.publicKey) {
       this.config.publicKey = options.publicKey;
+    } else if (options.hostname) {
+      this.config.hostname = options.hostname;
     } else if (!this.config.publicKey) {
       throw errors('config-missing-public-key');
     }
diff --git a/lib/recurly/request.js b/lib/recurly/request.js
index 1985c0b83..2730e5a07 100644
--- a/lib/recurly/request.js
+++ b/lib/recurly/request.js
@@ -297,6 +297,10 @@ export class Request {
         }
       };
 
+      if (this.recurly.config.hostname && req.setRequestHeader) {
+        req.setRequestHeader('Recurly-Credential-Checkout-Hostname', this.recurly.config.hostname);
+      }
+
       // XDR requests will abort if too many are sent simultaneously
       setTimeout(() => {
         if (method === 'post') {
diff --git a/test/unit/request.test.js b/test/unit/request.test.js
index 1cb4dd922..56aef92fa 100644
--- a/test/unit/request.test.js
+++ b/test/unit/request.test.js
@@ -240,11 +240,13 @@ describe('Request', () => {
         beforeEach(function () {
           sinon.spy(this.XHR.prototype, 'open');
           sinon.spy(this.XHR.prototype, 'send');
+          sinon.spy(this.XHR.prototype, 'setRequestHeader');
         });
 
         afterEach(function () {
           this.XHR.prototype.open.restore();
           this.XHR.prototype.send.restore();
+          this.XHR.prototype.setRequestHeader.restore();
         });
 
         describe('when performing a POST request', () => {
@@ -271,6 +273,14 @@ describe('Request', () => {
             assert(this.XHR.prototype.send.calledWith());
           });
         });
+
+        describe('when configured with a hostname', () => {
+          it('Applies the hostname as a header', function () {
+            this.recurly.configure({ hostname: 'test-hostname.recurly.com' });
+            this.request.request({ method: 'get', route: 'test' });
+            assert(this.XHR.prototype.setRequestHeader.calledWithMatch('Recurly-Credential-Checkout-Hostname', 'test-hostname.recurly.com'));
+          });
+        });
       });
     });
   });