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//! This is the simplest possible client using rustls-postquantum, based on
//! `simpleclient.rs`.
//!
//! It sends a HTTP request to pq.cloudflareresearch.com and prints the response to
//! stdout. Observe in that output: `kex=X25519MLKEM768`
//!
//! Note that `unwrap()` is used to deal with networking errors; this is not something
//! that is sensible outside of example code.
use std::io::{Read, Write, stdout};
use std::net::TcpStream;
use std::sync::Arc;
fn main() {
env_logger::init();
rustls_post_quantum::provider()
.install_default()
.unwrap();
let root_store = rustls::RootCertStore {
roots: webpki_roots::TLS_SERVER_ROOTS.into(),
};
let config = rustls::ClientConfig::builder()
.with_root_certificates(root_store)
.with_no_client_auth();
let server_name = "pq.cloudflareresearch.com"
.try_into()
.unwrap();
let mut conn = rustls::ClientConnection::new(Arc::new(config), server_name).unwrap();
let mut sock = TcpStream::connect("pq.cloudflareresearch.com:443").unwrap();
let mut tls = rustls::Stream::new(&mut conn, &mut sock);
tls.write_all(
concat!(
"GET /cdn-cgi/trace HTTP/1.0\r\n",
"Host: pq.cloudflareresearch.com\r\n",
"Connection: close\r\n",
"Accept-Encoding: identity\r\n",
"\r\n"
)
.as_bytes(),
)
.unwrap();
let ciphersuite = tls
.conn
.negotiated_cipher_suite()
.unwrap();
writeln!(
&mut std::io::stderr(),
"Current ciphersuite: {:?}",
ciphersuite.suite()
)
.unwrap();
let kx_group = tls
.conn
.negotiated_key_exchange_group()
.unwrap();
writeln!(
&mut std::io::stderr(),
"Current key exchange group: {kx_group:?}",
)
.unwrap();
let mut plaintext = Vec::new();
tls.read_to_end(&mut plaintext).unwrap();
stdout().write_all(&plaintext).unwrap();
}
|
