Looking for feedback on this lightweight HTTP/HTTPS downloader library written in C

Discussion

Hey everyone,

I'd love to get some honest feedback on this project before calling it "finished."

It's a lightweight HTTP/HTTPS download library and CLI tool written in C. The goal is to keep it relatively small and readable while still supporting features you'd expect from a modern downloader.

Current features include:

HTTP/HTTPS (OpenSSL)
TLS certificate verification
Resume support
Parallel segmented downloads
Connection pooling
HTTP proxy support
gzip/deflate decompression
Chunked transfer decoding
Redirect handling
Progress callbacks
Unit tests and GitHub Actions CI

Repository:
https://github.com/TOTO-sys28/FetC

I'm mainly looking for feedback on things like:

Project structure
API design
Code quality
Missing features that would make sense
Performance
Thread safety
HTTP correctness
Documentation
Anything that looks questionable or could be improved

Don't hold back—I'd much rather hear what's wrong with it than only what looks good. Any suggestions, criticism, or ideas are appreciated.

Thanks!

https://github.com/TOTO-sys28/FetC

Posted Jul 4, 2026, 6:29 PM UTC

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