Awesome
coap-rs
A fast and stable Constrained Application Protocol(CoAP) library implemented in Rust.
Features:
- CoAP core protocol RFC 7252
- CoAP Observe option RFC 7641
- Too Many Requests Response Code RFC 8516
- Block-Wise Transfers RFC 7959
- DTLS support via webrtc-rs
- Option to provide custom transports for client and server
Installation
First add this to your Cargo.toml
:
[dependencies]
coap = "0.19"
coap-lite = "0.11.3"
tokio = {version = "^1.32", features = ["full"]}
Example
Server:
use coap_lite::{RequestType as Method, CoapRequest};
use coap::Server;
use tokio::runtime::Runtime;
use std::net::SocketAddr;
fn main() {
let addr = "127.0.0.1:5683";
Runtime::new().unwrap().block_on(async move {
let mut server = Server::new_udp(addr).unwrap();
println!("Server up on {}", addr);
server.run(|mut request: Box<CoapRequest<SocketAddr>>| async {
match request.get_method() {
&Method::Get => println!("request by get {}", request.get_path()),
&Method::Post => println!("request by post {}", String::from_utf8(request.message.payload.clone()).unwrap()),
&Method::Put => println!("request by put {}", String::from_utf8(request.message.payload.clone()).unwrap()),
_ => println!("request by other method"),
};
match request.response {
Some(ref mut message) => {
message.message.payload = b"OK".to_vec();
},
_ => {}
};
return request
}).await.unwrap();
});
}
Client:
use coap_lite::{RequestType as Method, CoapRequest};
use coap::{UdpCoAPClient};
use tokio::main;
#[tokio::main]
async fn main() {
let url = "coap://127.0.0.1:5683/Rust";
println!("Client request: {}", url);
let response = UdpCoAPClient::get(url).await.unwrap();
println!("Server reply: {}", String::from_utf8(response.message.payload).unwrap());
}
Benchmark
$ cargo bench