Bin's Tech Cabin

Jun 16, 2022 · Backend Development

Uncovering Netty’s TCP Connection Closure: From Normal Shutdown to Half‑Close Bug Fix

This article dives deep into Netty's handling of TCP connection termination, explaining normal and abnormal closures, the half‑close mechanism, the impact of the SO_LINGER option, a discovered bug that blocks half‑close reads, and the step‑by‑step fix submitted and merged into Netty.