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A rust implementation of gRPC, a high performance, open source, general RPC framework that puts mobile and HTTP/2 first.

tonic is a gRPC over HTTP/2 implementation focused on high performance, interoperability, and flexibility. This library was created to have first class support of async/await and to act as a core building block for production systems written in Rust.

Examples | Website | Docs | Chat

tonic is composed of three main components: the generic gRPC implementation, the high performance HTTP/2 implementation and the codegen powered by prost. The generic implementation can support any HTTP/2 implementation and any encoding via a set of generic traits. The HTTP/2 implementation is based on hyper, a fast HTTP/1.1 and HTTP/2 client and server built on top of the robust tokio stack. The codegen contains the tools to build clients and servers from protobuf definitions.

• Bi-directional streaming
• High performance async io
• Interoperability
• TLS backed by rustls
• Load balancing
• Custom metadata
• Authentication

Examples can be found in examples and for more complex scenarios interop may be a good resource as it shows examples of many of the gRPC features.

tonic currently works on rust 1.39 and above as it requires support for the async_await feature.

$ rustup update
$ rustup component add rustfmt
$ cargo build

• The helloworld tutorial provides a basic example of using tonic, perfect for first time users!
• The routeguide tutorial provides a complete example of using tonic and all its features.

First, see if the answer to your question can be found in the API documentation. If the answer is not there, there is an active community in the Tonic Discord channel. We would be happy to try to answer your question. If that doesn't work, try opening an issue with the question.

• tonic: Generic gRPC and HTTP/2 client/server implementation.
• tonic-build: prost based service codegen.
• examples: Example gRPC implementations showing off tls, load balancing and bi-directional streaming.
• interop: Interop tests implementation.

🎈 Thanks for your help improving the project! We are so happy to have you! We have a contributing guide to help you get involved in the Tonic project.

This project is licensed under the MIT license.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Tonic by you, shall be licensed as MIT, without any additional terms or conditions.