httpcodec is used at run time in 11 crates (of which 1 optionally). It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) httpcodec version
460 3 fibers_http_server ^0.2
frugalos ^0.2
1 fibers_http_client ^0.2
hb ^0.2
electrscash ^0.2.3
wstcp ^0.2
rostrum ^0.2.3
k3-wasm-sdk ^0.2.3
blockless-web-cgi ^0.2.3
mizumochi ^0.2
hi-push optional ^0.2.3
13K 6 rustracing_jaeger dev ^0.2