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#![cfg(any(feature = "rustls-aws-lc-rs", feature = "rustls-ring"))]
//! Commonly used code in most examples.
use quinn::{ClientConfig, Endpoint, ServerConfig};
use rustls::pki_types::{CertificateDer, PrivatePkcs8KeyDer};
use std::{error::Error, net::SocketAddr, sync::Arc};
/// Constructs a QUIC endpoint configured for use a client only.
///
/// ## Args
///
/// - server_certs: list of trusted certificates.
#[allow(unused)]
pub fn make_client_endpoint(
bind_addr: SocketAddr,
server_certs: &[&[u8]],
) -> Result<Endpoint, Box<dyn Error + Send + Sync + 'static>> {
let client_cfg = configure_client(server_certs)?;
let mut endpoint = Endpoint::client(bind_addr)?;
endpoint.set_default_client_config(client_cfg);
Ok(endpoint)
}
/// Constructs a QUIC endpoint configured to listen for incoming connections on a certain address
/// and port.
///
/// ## Returns
///
/// - a stream of incoming QUIC connections
/// - server certificate serialized into DER format
#[allow(unused)]
pub fn make_server_endpoint(
bind_addr: SocketAddr,
) -> Result<(Endpoint, CertificateDer<'static>), Box<dyn Error + Send + Sync + 'static>> {
let (server_config, server_cert) = configure_server()?;
let endpoint = Endpoint::server(server_config, bind_addr)?;
Ok((endpoint, server_cert))
}
/// Builds default quinn client config and trusts given certificates.
///
/// ## Args
///
/// - server_certs: a list of trusted certificates in DER format.
fn configure_client(
server_certs: &[&[u8]],
) -> Result<ClientConfig, Box<dyn Error + Send + Sync + 'static>> {
let mut certs = rustls::RootCertStore::empty();
for cert in server_certs {
certs.add(CertificateDer::from(*cert))?;
}
Ok(ClientConfig::with_root_certificates(Arc::new(certs))?)
}
/// Returns default server configuration along with its certificate.
fn configure_server(
) -> Result<(ServerConfig, CertificateDer<'static>), Box<dyn Error + Send + Sync + 'static>> {
let cert = rcgen::generate_simple_self_signed(vec!["localhost".into()]).unwrap();
let cert_der = CertificateDer::from(cert.cert);
let priv_key = PrivatePkcs8KeyDer::from(cert.key_pair.serialize_der());
let mut server_config =
ServerConfig::with_single_cert(vec![cert_der.clone()], priv_key.into())?;
let transport_config = Arc::get_mut(&mut server_config.transport).unwrap();
transport_config.max_concurrent_uni_streams(0_u8.into());
Ok((server_config, cert_der))
}
#[allow(unused)]
pub const ALPN_QUIC_HTTP: &[&[u8]] = &[b"hq-29"];
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