gRPC-rs
is a Rust wrapper of gRPC Core. gRPC is a high performance, open source universal RPC framework that puts mobile and HTTP/2 first.
This project is still under development. The following features with the check marks are supported:
- Basic asynchronous unary/steaming call
- SSL
- Generic call
- Connection level compression
- Interoperability test
- QPS benchmark
- Custom metadata
- Health check
- Reflection
- Authentication
- Load balance, client side is fully supported, server side load report is not implemented yet.
- CMake >= 3.8.0
- Rust >= 1.36.0
- binutils >= 2.22
- LLVM and Clang >= 3.9 if you need to generate bindings at compile time.
For Linux and MacOS, you also need to install gcc 7.3+ (or clang 6+) too.
Bindings are pre-generated for x86_64/arm64 Linux. For other platforms, bindings are generated at compile time.
For Windows, you also need to install following software:
- Active State Perl
- yasm
- Visual Studio 2015+
$ cargo xtask submodule # if you just cloned the repository
$ cargo build
If you're getting linker errors when building your project using gRPC-rs
, head
down to the openssl
feature section for a possible fix.
To generate the sources from proto files:
- Install the protobuf compiler:
$ cargo install protobuf-codegen
- Install the gRPC compiler:
$ cargo install grpcio-compiler
- Generate the sources:
$ protoc --rust_out=. --grpc_out=. --plugin=protoc-gen-grpc=`which grpc_rust_plugin` example.proto
Programmatic generation can be used to generate Rust modules from proto files
via your build.rs
by using protoc-grpcio.
For more information and examples see README.
To include this project as a dependency:
[dependencies]
grpcio = "0.13"
boringssl
feature enables support for TLS encryption and some authentication
mechanism. When you do not need it, for example when working in intranet,
you can disable it by using the following configuration:
[dependencies]
grpcio = { version = "0.13", default-features = false, features = ["protobuf-codec"] }
gRPC-rs
uses protobuf
crate by default. If you want to use prost
instead, you can enable
prost-codec
feature. You probably only want to enable only one of the two features. Though
grpcio is completely fine with both features enabled at the same time, grpcio-compiler
will not going to work as expected.
gRPC-rs
comes vendored with gRPC Core
, which by default uses BoringSSL
instead of OpenSSL. This may cause linking issues due to symbol clashes and/or
missing symbols when another one of your dependencies uses OpenSSL. To resolve
this, you can tell gRPC-rs
to use OpenSSL too by specifying "openssl"
in
your Cargo.toml
's features list for gprcio
, which requires openssl (>=1.0.2). E.g.:
[dependencies]
grpcio = { version = "0.13", features = ["openssl"] }
Feature openssl-vendored
is the same as feature openssl
except it will build openssl from
bundled sources.
See benchmark to find out how to run a benchmark by yourself.
See cross_compile
Make sure to format and test the code before sending a PR.
If the content in grpc-sys/grpc is updated, you may need to regenerate bindings:
$ cargo xtask bindgen