MIO is a lightweight IO library for Rust with a focus on adding as little overhead as possible over the OS abstractions.

• API documentation

To use mio, first add this to your Cargo.toml:

[dependencies.mio]
git = "https://github.com/carllerche/mio"

mio is on Crates.io, but is not often updated.

Then, add this to your crate root:

extern crate mio;

• Event loop backed by epoll, kqueue.
• Zero allocations at runtime
• Non-blocking TCP, UDP and Unix domain sockets
• High performance timer system
• Thread safe message channel for cross thread communication

Coming soon

• Signal handling

The following are specifically omitted from MIO and are left to the user or higher level libraries.

• File operations
• Thread pools / multi-threaded event loop

Currently, MIO only supports Linux and Darwin. However, Windows support will be coming soon. The goal is to support all platforms that Rust supports.