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Technical Blog

Engineering notes, deep dives, implementation stories, and practical articles on Windows networking, packet filtering, proxies, VPNs, and related systems work.

August 10, 2025

A Rare CancelIoEx Hang in Go on Windows

A Go on Windows CancelIoEx hang investigation, with a pipe-race reproducer, kernel dump evidence and the upstream fix history.

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NT KERNEL

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Developed by Vadim Smirnov

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