RMP is a complete pure-Rust MessagePack implementation. MessagePack a compact self-describing binary serialization format.

This project consists of three crates:

• RMP-Serde (Documentation) — easy serializing/deserializing via Serde.
• RMP-Value (Documentation) — a universal Value enum that can hold any MessagePack type. Allows deserializing arbitrary messages without a known schema.
• RMP (Documentation) — low-level functions for reading/writing encoded data.

• Convenient and powerful APIs

  RMP is designed to be lightweight and straightforward. There is a high-level API with support for Serde, which provides you convenient interface for encode/decode Rust's data structures using derive attribute. There are also low-level APIs, which give you full control over data encoding/decoding process, with no-std support and without heap allocations.

• Zero-copy value decoding

  RMP allows to decode bytes from a buffer in a zero-copy manner. Parsing is implemented in safe Rust.

• Robust, stable and tested

  This project is developed using TDD and CI, so any found bugs will be fixed without breaking existing functionality.

It's smaller and much simpler to parse than JSON. The encoded data is self-describing and extensible, without using any schema definitions. It supports the same data types as JSON, plus binary data, non-string map keys, all float values, and 64-bit numbers. Msgpack values use <lenght><data> encoding, so they can be safely concatenated and read from a stream.

MessagePack is similar to CBOR, but has simpler data types (no bignums, decimal floats, dates, or indefinite-length sets, etc.)

• An up-to-date stable version of Rust, preferably from rustup.