websocket-lite

This repo contains three crates:

• websocket-lite, a fast, low-overhead async WebSocket client
• websocket-codec, a Tokio codec implementation of the WebSocket protocol
• hyper-websocket-lite, bindings between a hyper server and websocket-codec

websocket-lite

Documentation | Source

This crate is optimised for receiving a high volume of messages over a long period. A key feature is that it makes no memory allocations once the connection is set up and the initial messages have been sent and received; it reuses a single pair of buffers, which are sized for the longest message seen so far.

This crate provides sync and async, tokio-based functionality. The ssl-native-tls, ssl-rustls-native-roots and ssl-rustls-webpki-roots feature flags provide the TLS functionality for wss://... servers.

This crate is fully conformant with the fuzzingserver module in the Autobahn test suite.

websocket-codec

Documentation | Source

This is a standalone crate that does not do any I/O directly. For a full WebSocket client, see the websocket-lite crate.

hyper-websocket-lite

Documentation | Source

Provides the server_upgrade function, which bridges a client's HTTP Upgrade request to the WebSocket protocol.

Additional command line tools

• wsinspect: views the protocol-level WebSocket frame data from a binary file.

  cargo run --example wsinspect -- --help
  

• wsdump: a basic replica of the wsdump tool found in the websocket-client Python package.

  cargo run --example wsdump -- --help
  

async/await

Version 0.3.2 and above use std futures and the async and await keywords. They are based on tokio 0.2 and futures 0.3 and the earliest supported compiler is 1.39. Version 0.5.0 and above use tokio 1.x and futures 0.3.

Version 0.2.4 is the release prior to async/await. It is based on tokio 0.1 and futures 0.1.