mirror of https://github.com/ctz/rustls
83 lines
2.4 KiB
Rust
83 lines
2.4 KiB
Rust
use std::sync::Arc;
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use std::io::{stdout, Read, Write};
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use std::net::TcpStream;
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use rustls::{OwnedTrustAnchor, RootCertStore};
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fn start_connection(config: &Arc<rustls::ClientConfig>, domain_name: &str) {
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let server_name = domain_name
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.try_into()
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.expect("invalid DNS name");
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let mut conn = rustls::ClientConnection::new(Arc::clone(config), server_name).unwrap();
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let mut sock = TcpStream::connect(format!("{domain_name}:443")).unwrap();
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sock.set_nodelay(true).unwrap();
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let request = format!(
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"GET / HTTP/1.1\r\n\
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Host: {domain_name}\r\n\
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Connection: close\r\n\
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Accept-Encoding: identity\r\n\
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\r\n",
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);
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// If early data is available with this server, then early_data()
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// will yield Some(WriteEarlyData) and WriteEarlyData implements
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// io::Write. Use this to send the request.
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if let Some(mut early_data) = conn.early_data() {
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early_data
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.write_all(request.as_bytes())
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.unwrap();
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}
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let mut stream = rustls::Stream::new(&mut conn, &mut sock);
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// Complete handshake.
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stream.flush().unwrap();
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// If we didn't send early data, or the server didn't accept it,
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// then send the request as normal.
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if !stream.conn.is_early_data_accepted() {
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stream
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.write_all(request.as_bytes())
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.unwrap();
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}
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let mut plaintext = Vec::new();
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stream
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.read_to_end(&mut plaintext)
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.unwrap();
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stdout().write_all(&plaintext).unwrap();
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}
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fn main() {
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env_logger::init();
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let mut root_store = RootCertStore::empty();
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root_store.add_server_trust_anchors(
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webpki_roots::TLS_SERVER_ROOTS
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.0
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.iter()
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.map(|ta| {
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OwnedTrustAnchor::from_subject_spki_name_constraints(
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ta.subject,
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ta.spki,
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ta.name_constraints,
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)
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}),
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);
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let mut config = rustls::ClientConfig::builder()
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.with_safe_defaults()
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.with_root_certificates(root_store)
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.with_no_client_auth();
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// Enable early data.
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config.enable_early_data = true;
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let config = Arc::new(config);
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// Do two connections. The first will be a normal request, the
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// second will use early data if the server supports it.
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start_connection(&config, "mesalink.io");
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start_connection(&config, "mesalink.io");
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}
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