Tencent IMWeb Frontend Team

May 17, 2021 · Frontend Development

How a Hidden fetch Interception Caused Memory Leaks in FLV Live Streams (and How to Fix It)

This article details a severe memory‑leak crash observed on a Tencent Classroom FLV live‑stream page during IMWebConf 2020, outlines the systematic reproduction steps, identifies the culprit as a fetch‑interception mechanism in an internal reporting tool, and presents a whitelist‑based fix to prevent future crashes.