mirror of https://github.com/ctz/rustls
65 lines
2.1 KiB
Rust
65 lines
2.1 KiB
Rust
/// This is the simplest possible client using rustls that does something useful:
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/// it accepts the default configuration, loads some root certs, and then connects
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/// to google.com and issues a basic HTTP request. The response is printed to stdout.
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///
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/// It makes use of rustls::Stream to treat the underlying TLS connection as a basic
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/// bi-directional stream -- the underlying IO is performed transparently.
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///
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/// Note that `unwrap()` is used to deal with networking errors; this is not something
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/// that is sensible outside of example code.
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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 main() {
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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 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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let server_name = "google.com".try_into().unwrap();
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let mut conn = rustls::ClientConnection::new(Arc::new(config), server_name).unwrap();
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let mut sock = TcpStream::connect("google.com:443").unwrap();
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let mut tls = rustls::Stream::new(&mut conn, &mut sock);
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tls.write_all(
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concat!(
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"GET / HTTP/1.1\r\n",
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"Host: google.com\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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.as_bytes(),
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)
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.unwrap();
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let ciphersuite = tls
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.conn
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.negotiated_cipher_suite()
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.unwrap();
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writeln!(
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&mut std::io::stderr(),
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"Current ciphersuite: {:?}",
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ciphersuite.suite()
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)
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.unwrap();
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let mut plaintext = Vec::new();
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tls.read_to_end(&mut plaintext).unwrap();
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stdout().write_all(&plaintext).unwrap();
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}
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