The tls module

Encrypted connections: TLS 1.2 and 1.3 over TCP, for clients and servers.

Bring it in with import tls. A TlsConnector opens client connections and checks each server’s certificate; a TlsAcceptor accepts connections with a certificate and key from PEM files; a TlsStream reads and writes like an io.TcpStream. In a task, a call that has to wait parks only the task.

On Linux and macOS the module uses OpenSSL 3, loaded when the first connector or acceptor is made; on Windows it uses SChannel.

• Streams: TlsConnector, TlsAcceptor, and TlsStream

Example

import tls;

main(): int {
    var connector = tls.TlsConnector.create().value();
    var stream = connector.connect_host("localhost", 8443).value();
    stream.write_all("ping");
    var reply = Array<u8>();
    while (stream.read(reply, 4096).value() > 0) {
    }
    return 0;
}

Source: runtime/tls/module.pep