ui work

src/net/client.rs

@@ -0,0 +1,51 @@
+use quinn::{crypto::rustls::QuicClientConfig, rustls::pki_types::CertificateDer};
+use std::{
+    fs,
+    io::ErrorKind,
+    net::{IpAddr, Ipv6Addr, SocketAddr},
+    str::FromStr,
+    sync::Arc,
+};
+
+#[tokio::main]
+pub async fn connect() -> anyhow::Result<()> {
+    let dirs = directories_next::ProjectDirs::from("", "", "openworm").unwrap();
+    let mut roots = quinn::rustls::RootCertStore::empty();
+    match fs::read(dirs.data_local_dir().join("cert.der")) {
+        Ok(cert) => {
+            roots.add(CertificateDer::from(cert))?;
+        }
+        Err(ref e) if e.kind() == ErrorKind::NotFound => {
+            eprintln!("local server certificate not found");
+        }
+        Err(e) => {
+            eprintln!("failed to open local server certificate: {}", e);
+        }
+    }
+    let client_crypto = quinn::rustls::ClientConfig::builder()
+        .with_root_certificates(roots)
+        .with_no_client_auth();
+    let client_config =
+        quinn::ClientConfig::new(Arc::new(QuicClientConfig::try_from(client_crypto)?));
+    let mut endpoint = quinn::Endpoint::client(SocketAddr::from_str("[::]:0").unwrap())?;
+    endpoint.set_default_client_config(client_config);
+    let remote = SocketAddr::new(IpAddr::V6(Ipv6Addr::LOCALHOST), 4433);
+    let host = "localhost";
+    let conn = endpoint
+        .connect(remote, host)?
+        .await
+        .map_err(|e| anyhow::anyhow!("failed to connect: {}", e))?;
+
+    let (mut send, mut recv) = conn
+        .open_bi()
+        .await
+        .map_err(|e| anyhow::anyhow!("failed to open stream: {}", e))?;
+
+    drop(recv);
+
+    send.write_all(&[39]).await.expect("failed to send");
+    send.finish().unwrap();
+    send.stopped().await.unwrap();
+
+    Ok(())
+}