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//! This is the simplest possible client using rustls that does something useful:
//! it accepts the default configuration, loads some root certs, and then connects
//! to rust-lang.org and issues a basic HTTP request. The response is printed to stdout.
//!
//! It makes use of rustls::Stream to treat the underlying TLS connection as a basic
//! bi-directional stream -- the underlying IO is performed transparently.
//!
//! 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;
use rustls::RootCertStore;
use rustls_native_certs::load_native_certs;
fn main() {
let mut root_store = RootCertStore::empty();
for cert in load_native_certs().expect("could not load platform certs") {
root_store.add(cert)
.expect("could not add certificate");
};
let mut config = rustls::ClientConfig::builder()
.with_root_certificates(root_store)
.with_no_client_auth();
// Allow using SSLKEYLOGFILE.
config.key_log = Arc::new(rustls::KeyLogFile::new());
let server_name = "www.rust-lang.org".try_into().unwrap();
let mut conn = rustls::ClientConnection::new(Arc::new(config), server_name).unwrap();
let mut sock = TcpStream::connect("www.rust-lang.org:443").unwrap();
let mut tls = rustls::Stream::new(&mut conn, &mut sock);
tls.write_all(
concat!(
"GET / HTTP/1.1\r\n",
"Host: www.rust-lang.org\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 mut plaintext = Vec::new();
tls.read_to_end(&mut plaintext).unwrap();
stdout().write_all(&plaintext).unwrap();
}
|
