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|
//! This example demonstrates how to make multiple outgoing connections on a single UDP socket.
//!
//! Checkout the `README.md` for guidance.
use std::{
error::Error,
net::{IpAddr, Ipv4Addr, SocketAddr},
};
use quinn::Endpoint;
mod common;
use common::{make_client_endpoint, make_server_endpoint};
use rustls::pki_types::CertificateDer;
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
let addr1 = SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), 5000);
let addr2 = SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), 5001);
let addr3 = SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), 5002);
let server1_cert = run_server(addr1)?;
let server2_cert = run_server(addr2)?;
let server3_cert = run_server(addr3)?;
let client = make_client_endpoint(
SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), 0),
&[&server1_cert, &server2_cert, &server3_cert],
)?;
// connect to multiple endpoints using the same socket/endpoint
tokio::join!(
run_client(&client, addr1),
run_client(&client, addr2),
run_client(&client, addr3),
);
// Make sure the server has a chance to clean up
client.wait_idle().await;
Ok(())
}
/// Runs a QUIC server bound to given address and returns server certificate.
fn run_server(
addr: SocketAddr,
) -> Result<CertificateDer<'static>, Box<dyn Error + Send + Sync + 'static>> {
let (endpoint, server_cert) = make_server_endpoint(addr)?;
// accept a single connection
tokio::spawn(async move {
let connection = endpoint.accept().await.unwrap().await.unwrap();
println!(
"[server] incoming connection: addr={}",
connection.remote_address()
);
});
Ok(server_cert)
}
/// Attempt QUIC connection with the given server address.
async fn run_client(endpoint: &Endpoint, server_addr: SocketAddr) {
let connect = endpoint.connect(server_addr, "localhost").unwrap();
let connection = connect.await.unwrap();
println!("[client] connected: addr={}", connection.remote_address());
}
|
