Crate tonic_web_wasm_client 

Rust implementation of grpc-web protocol that allows using tonic in browsers via webassembly.

Usage

To use tonic-web-wasm-client, you need to add the following to your Cargo.toml:

[dependencies]
tonic-web-wasm-client = "0.8"

Example

To use tonic gRPC clients in browser, compile your code with tonic’s transport feature disabled (this will disable the default transport layer of tonic). Then initialize the query client as follows:

use tonic_web_wasm_client::Client;

let base_url = "http://localhost:9001"; // URL of the gRPC-web server
let query_client = QueryClient::new(Client::new(base_url)); // `QueryClient` is the client generated by tonic

let response = query_client.status().await; // Execute your queries the same way as you do with defaule transport layer

Building

Since tonic-web-wasm-client is primarily intended for use in browsers, a crate that uses tonic-web-wasm-client can only be built for wasm32 target architectures:

cargo build --target wasm32-unknown-unknown

Other option is to create a .cargo/config.toml in your crate repository and add a build target there:

[build]
target = "wasm32-unknown-unknown"

Custom Accept header:

This library allows you to set a custom Accept header for the requests. This can be useful if you need to specify a different content type for the responses. But, be aware that if you set a custom Accept header, the client may not be able to handle the response correctly.

Modules

options

Options for underlying fetch call

Structs

Client

grpc-web based transport layer for tonic clients

ResponseBody

Type to handle HTTP response

Enums

Error

Error type for tonic-web-wasm-client