From dabf0413dfb12d3ffa93ef06700581d0f3de67a0 Mon Sep 17 00:00:00 2001
From: cb-alish <alish.sapkota@chargebee.com>
Date: Wed, 3 Jun 2026 12:15:30 +0530
Subject: [PATCH] Releasing v3.24.1

---
 CHANGELOG.md                | 10 +++++++++
 VERSION                     |  2 +-
 package-lock.json           |  4 ++--
 package.json                |  2 +-
 src/RequestWrapper.ts       |  2 +-
 src/environment.ts          |  2 +-
 test/requestWrapper.test.ts | 42 +++++++++++++++++++++++++++++++++++++
 7 files changed, 58 insertions(+), 6 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 80d73ab..5c7d67e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+### v3.24.1 (2026-06-03)
+* * *
+### Bug Fixes:
+- Fixed `Content-Length` header being computed from the JavaScript string length (UTF-16 code units) instead of the UTF-8 byte length. Requests with non-ASCII payloads (e.g. accented characters, CJK, emoji) under-declared `Content-Length` and were rejected by Node's `fetch`/undici (≥ 7.26.0) with `Request body length does not match content-length header`. The header is now computed via `Buffer.byteLength(data, 'utf8')`. Resolves https://github.com/chargebee/chargebee-node/issues/119. 
+
+### Tests:
+- ASCII form-urlencoded body — `Content-Length` matches the UTF-8 byte length of the serialized body.
+- Multi-byte JSON body — `Content-Length` matches the UTF-8 byte length and is greater than the JS character count, ensuring the regression cannot return.
+
+
 ### v3.24.0 (2026-05-04)
 * * *
 ### New Resources:
diff --git a/VERSION b/VERSION
index 954e228..455cf2c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.24.0
+3.24.1
diff --git a/package-lock.json b/package-lock.json
index 203c313..c3a8724 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "chargebee",
-  "version": "3.24.0",
+  "version": "3.24.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "chargebee",
-      "version": "3.24.0",
+      "version": "3.24.1",
       "devDependencies": {
         "@types/chai": "^4.3.5",
         "@types/mocha": "^10.0.10",
diff --git a/package.json b/package.json
index 7a2889e..f25bbe5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "chargebee",
-  "version": "3.24.0",
+  "version": "3.24.1",
   "description": "A library for integrating with Chargebee.",
   "scripts": {
     "prepack": "npm install && npm run build",
diff --git a/src/RequestWrapper.ts b/src/RequestWrapper.ts
index 878304c..b3e004e 100644
--- a/src/RequestWrapper.ts
+++ b/src/RequestWrapper.ts
@@ -122,7 +122,7 @@ export class RequestWrapper {
       const requestHeaders: RequestHeaders = { ...this.httpHeaders };
       if (data && data.length) {
         extend(true, requestHeaders, {
-          'Content-Length': data.length,
+          'Content-Length': Buffer.byteLength(data, 'utf8'),
         });
       }
 
diff --git a/src/environment.ts b/src/environment.ts
index 09dc710..1de9b8f 100644
--- a/src/environment.ts
+++ b/src/environment.ts
@@ -9,7 +9,7 @@ export const Environment = {
   hostSuffix: '.chargebee.com',
   apiPath: '/api/v2',
   timeout: DEFAULT_TIME_OUT,
-  clientVersion: 'v3.24.0',
+  clientVersion: 'v3.24.1',
   port: DEFAULT_PORT,
   timemachineWaitInMillis: DEFAULT_TIME_MACHINE_WAIT,
   exportWaitInMillis: DEFAULT_EXPORT_WAIT,
diff --git a/test/requestWrapper.test.ts b/test/requestWrapper.test.ts
index 0d67057..d63cdb1 100644
--- a/test/requestWrapper.test.ts
+++ b/test/requestWrapper.test.ts
@@ -189,6 +189,48 @@ describe('RequestWrapper - request headers', () => {
     });
   });
 
+  describe('Content-Length header', () => {
+    it('should set Content-Length to the UTF-8 byte length for ASCII form-urlencoded bodies', async () => {
+      responseFactory = () =>
+        new Response(JSON.stringify({ customer: { id: 'cust_123' } }), {
+          status: 200,
+          headers: { 'Content-Type': 'application/json' },
+        });
+
+      const chargebee = createChargebee();
+      await chargebee.customer.create({ first_name: 'John' });
+
+      const body = await capturedRequests[0].text();
+      const expected = Buffer.byteLength(body, 'utf8');
+      expect(capturedRequests[0].headers.get('Content-Length')).to.equal(
+        String(expected),
+      );
+    });
+
+    it('should set Content-Length to the UTF-8 byte length (not character count) for multi-byte JSON bodies', async () => {
+      responseFactory = () =>
+        new Response(JSON.stringify({ personalized_offers: [] }), {
+          status: 200,
+          headers: { 'Content-Type': 'application/json' },
+        });
+
+      const chargebee = createChargebee();
+      await chargebee.personalizedOffer.personalizedOffers({
+        customer_id: 'cust_123',
+        first_name: 'Jürgen',
+        last_name: 'Müller — 🎉',
+      });
+
+      const body = await capturedRequests[0].text();
+      const byteLength = Buffer.byteLength(body, 'utf8');
+      const charLength = body.length;
+      expect(byteLength).to.be.greaterThan(charLength);
+      expect(capturedRequests[0].headers.get('Content-Length')).to.equal(
+        String(byteLength),
+      );
+    });
+  });
+
   describe('Lang-Version header', () => {
     it('should set Lang-Version to the current Node.js process.version', async () => {
       const chargebee = createChargebee();