From 4a81f2cf5e693f5cbd8b3cdadd1e34ecd9efdf3f Mon Sep 17 00:00:00 2001
From: "lauren n. liberda" <msgh@selfisekai.rocks>
Date: Mon, 25 Mar 2024 20:04:58 +0100
Subject: [PATCH] core(network-request): recognize zstd compression algorithm
 (#15883)

---
 core/lib/network-request.js           |  2 +-
 core/test/lib/network-request-test.js | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/core/lib/network-request.js b/core/lib/network-request.js
index da45a527aa85..dd434495c3be 100644
--- a/core/lib/network-request.js
+++ b/core/lib/network-request.js
@@ -634,7 +634,7 @@ class NetworkRequest {
       /^content-encoding$/i,
       /^x-content-encoding-over-network$/i,
     ];
-    const compressionTypes = ['gzip', 'br', 'deflate'];
+    const compressionTypes = ['gzip', 'br', 'deflate', 'zstd'];
     return record.responseHeaders.some(header =>
       patterns.some(p => header.name.match(p)) && compressionTypes.includes(header.value)
     );
diff --git a/core/test/lib/network-request-test.js b/core/test/lib/network-request-test.js
index cc25dd691889..2a48e292621f 100644
--- a/core/test/lib/network-request-test.js
+++ b/core/test/lib/network-request-test.js
@@ -389,4 +389,22 @@ describe('NetworkRequest', () => {
       })).toBe(false);
     });
   });
+
+  describe('#isContentEncoded', () => {
+    const isContentEncoded = NetworkRequest.isContentEncoded;
+
+    it('correctly identifies no compression', () => {
+      expect(isContentEncoded({responseHeaders: []})).toBe(false);
+    });
+    it('correctly identifies brotli', () => {
+      expect(isContentEncoded({
+        responseHeaders: [{name: 'content-encoding', value: 'br'}],
+      })).toBe(true);
+    });
+    it('correctly identifies zstd', () => {
+      expect(isContentEncoded({
+        responseHeaders: [{name: 'content-encoding', value: 'zstd'}],
+      })).toBe(true);
+    });
+  });
 });