add .idea to gitignore

.gitignore

@@ -21,3 +21,4 @@ target/
 # Cargo root folder
 /.cargo
 
+.idea

src/quic/client.rs

@@ -0,0 +1,37 @@
+use std::error::Error;
+use std::net::SocketAddr;
+use std::sync::Arc;
+use quinn::{ClientConfig, Endpoint};
+use rustls::pki_types::CertificateDer;
+
+/// 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))?)
+}
+
+/// 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)
+}

src/quic/mod.rs

@@ -1 +1,2 @@
 mod server;
+mod client;

src/quic/server.rs

@@ -2,7 +2,6 @@ use std::error::Error;
 use std::net::SocketAddr;
 use std::sync::Arc;
 use quinn::{Endpoint, ServerConfig};
-use rcgen::Certificate;
 use rustls::pki_types::{CertificateDer, PrivatePkcs8KeyDer};
 use rustls::pki_types::pem::PemObject;