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