Protobuf implementation in Rust.

• Written in pure rust
• Generates rust code
• Has runtime library support for generated code (Coded{Input|Output}Stream impl)
• Supports both Protobuf versions 2 and 3
• and more

Documentation is hosted on docs.rs.

Version 3 is current stable version. Compared to version 2 it implements:

• runtime reflection
• JSON and text format parsing and printing
• dynamic messages (messages which can be created from .proto file on the fly without code generation)

Version 2 is previous stable version. Only most critical bugfixes will be applied to 2.x version, otherwise it won't be maintained.

The crate needs help:

• a new maintainer, but also
• testing
• documentation
• examples to be used as documentation
• feedback on API design
• feedback on implementation
• pull requests

See CHANGELOG.md for a list of changes and compatility issues between versions.

• prost — another protobuf implementation in Rust, also has gRPC implementation
• quick-protobuf — alternative protobuf implementation in Rust
• grpc-rs — another gRPC implementation for Rust
• grpc-rust — incomplete implementation of gRPC based on this library