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async-tungstenite/src/async_tls.rs

117 lines
3.6 KiB

//! `async-tls` integration.
use tungstenite::client::{uri_mode, IntoClientRequest};
use tungstenite::handshake::client::{Request, Response};
use tungstenite::protocol::WebSocketConfig;
use tungstenite::Error;
use futures_io::{AsyncRead, AsyncWrite};
use super::{client_async_with_config, WebSocketStream};
use async_tls::client::TlsStream;
use async_tls::TlsConnector as AsyncTlsConnector;
use real_async_tls as async_tls;
use tungstenite::stream::Mode;
use crate::domain;
use crate::stream::Stream as StreamSwitcher;
type MaybeTlsStream<S> = StreamSwitcher<S, TlsStream<S>>;
pub(crate) type AutoStream<S> = MaybeTlsStream<S>;
async fn wrap_stream<S>(
socket: S,
domain: String,
connector: Option<AsyncTlsConnector>,
mode: Mode,
) -> Result<AutoStream<S>, Error>
where
S: 'static + AsyncRead + AsyncWrite + Unpin,
{
match mode {
Mode::Plain => Ok(StreamSwitcher::Plain(socket)),
Mode::Tls => {
let stream = {
let connector = connector.unwrap_or_else(AsyncTlsConnector::new);
connector.connect(&domain, socket).await?
};
Ok(StreamSwitcher::Tls(stream))
}
}
}
/// Type alias for the stream type of the `client_async()` functions.
pub type ClientStream<S> = AutoStream<S>;
/// Creates a WebSocket handshake from a request and a stream,
/// upgrading the stream to TLS if required.
pub async fn client_async_tls<R, S>(
request: R,
stream: S,
) -> Result<(WebSocketStream<ClientStream<S>>, Response), Error>
where
R: IntoClientRequest + Unpin,
S: 'static + AsyncRead + AsyncWrite + Unpin,
AutoStream<S>: Unpin,
{
client_async_tls_with_connector_and_config(request, stream, None, None).await
}
/// Creates a WebSocket handshake from a request and a stream,
/// upgrading the stream to TLS if required and using the given
/// WebSocket configuration.
pub async fn client_async_tls_with_config<R, S>(
request: R,
stream: S,
config: Option<WebSocketConfig>,
) -> Result<(WebSocketStream<ClientStream<S>>, Response), Error>
where
R: IntoClientRequest + Unpin,
S: 'static + AsyncRead + AsyncWrite + Unpin,
AutoStream<S>: Unpin,
{
client_async_tls_with_connector_and_config(request, stream, None, config).await
}
/// Creates a WebSocket handshake from a request and a stream,
/// upgrading the stream to TLS if required and using the given
/// connector.
pub async fn client_async_tls_with_connector<R, S>(
request: R,
stream: S,
connector: Option<AsyncTlsConnector>,
) -> Result<(WebSocketStream<ClientStream<S>>, Response), Error>
where
R: IntoClientRequest + Unpin,
S: 'static + AsyncRead + AsyncWrite + Unpin,
AutoStream<S>: Unpin,
{
client_async_tls_with_connector_and_config(request, stream, connector, None).await
}
/// Creates a WebSocket handshake from a request and a stream,
/// upgrading the stream to TLS if required and using the given
/// connector and WebSocket configuration.
pub async fn client_async_tls_with_connector_and_config<R, S>(
request: R,
stream: S,
connector: Option<AsyncTlsConnector>,
config: Option<WebSocketConfig>,
) -> Result<(WebSocketStream<ClientStream<S>>, Response), Error>
where
R: IntoClientRequest + Unpin,
S: 'static + AsyncRead + AsyncWrite + Unpin,
AutoStream<S>: Unpin,
{
let request: Request = request.into_client_request()?;
let domain = domain(&request)?;
// Make sure we check domain and mode first. URL must be valid.
let mode = uri_mode(request.uri())?;
let stream = wrap_stream(stream, domain, connector, mode).await?;
client_async_with_config(request, stream, config).await
}