Async TLS streams backed by OpenSSL.

Provides SslStream, an async wrapper around openssl::ssl::SslStream that implements futures_io::AsyncRead and futures_io::AsyncWrite instead of the blocking std::io::Read / std::io::Write traits, making it usable with any runtime that builds on the futures-io ecosystem.

Forked from tokio-openssl and reworked to target the runtime-agnostic futures-io traits rather than the tokio-specific ones.

Example

use async_openssl::SslStream;
use openssl::ssl::{SslConnector, SslMethod};
use std::pin::Pin;

async fn connect(host: &str) -> Result<(), Box<dyn std::error::Error>> {
    use smol::net::TcpStream;

    let connector = SslConnector::builder(SslMethod::tls())?.build();
    let stream = TcpStream::connect((host, 443u16)).await?;
    let ssl = connector.configure()?.into_ssl(host)?;
    let mut stream = SslStream::new(ssl, stream)?;
    Pin::new(&mut stream).connect().await?;
    Ok(())
}

For a complete runnable example see examples/.

License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.