An alternative http library and web framework inspired by hyper

Requirement

Prefer less synchronization when possible and thread per core design is used.
100% safe Rust.¹
Low memory footprint. Avoid (pre)allocation when possible.
Lightweight dependency tree. Avoid adding unnecessary import when possible. Prefer no proc macro code generation when possible(proc macro feature are still offered as opt-in instead of opt-out).
Make async web frameworks easier to use. Experimental nightly Rust feature: impl_trait_in_assoc_type is used.
Make code base compact and simple. Reduce the barrier of understanding of source code for easier contributing.
Simplify ecosystem with no homebrew new type/crate wrapper. tokio(for async runtime) and http(for http types) are used directly as dependency.

only guaranteed inside project's own code. unsafe can and is used by dependencies ↩