From 625fd385b3a72348266ed3849c8a88391059e9dd Mon Sep 17 00:00:00 2001
From: Andreas Dolk <treverixdev@gmail.com>
Date: Mon, 5 Dec 2022 18:59:56 +0100
Subject: [PATCH] [#1576] Fixes unexpected premature close on chunked responses

---
 src/index.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/index.js b/src/index.js
index 7c4aee87b..961677014 100644
--- a/src/index.js
+++ b/src/index.js
@@ -397,10 +397,10 @@ function fixResponseChunkedTransferBadEnding(request, errorCallback) {
 
 			// Sometimes final 0-length chunk and end of message code are in separate packets
 			if (!properLastChunkReceived && previousChunk) {
-				properLastChunkReceived = (
-					Buffer.compare(previousChunk.slice(-3), LAST_CHUNK.slice(0, 3)) === 0 &&
-					Buffer.compare(buf.slice(-2), LAST_CHUNK.slice(3)) === 0
-				);
+				if (buf.length < 5) {
+					properLastChunkReceived = Buffer.compare(
+						Buffer.from([...previousChunk.slice(-5), ...buf]).slice(-5), LAST_CHUNK) === 0;
+				}
 			}
 
 			previousChunk = buf;