aboutsummaryrefslogtreecommitdiff
path: root/net/src/transports/ws.rs
blob: 6107999fedea0d088d3bf96d230b6c2e1e10d4e9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
use std::net::SocketAddr;

#[cfg(feature = "tls")]
use std::sync::Arc;

use async_trait::async_trait;
#[cfg(feature = "tls")]
use rustls_pki_types as pki_types;

#[cfg(feature = "tokio")]
use async_tungstenite::tokio as async_tungstenite;

#[cfg(all(feature = "smol", feature = "tls"))]
use futures_rustls::{rustls, TlsAcceptor, TlsConnector};
#[cfg(all(feature = "tokio", feature = "tls"))]
use tokio_rustls::{rustls, TlsAcceptor, TlsConnector};

use karyon_core::async_runtime::{
    lock::Mutex,
    net::{TcpListener, TcpStream},
};

use crate::{
    codec::WebSocketCodec,
    connection::{Conn, Connection, ToConn},
    endpoint::Endpoint,
    listener::{ConnListener, Listener, ToListener},
    stream::WsStream,
    Result,
};

use super::tcp::TcpConfig;

/// WSS configuration
#[derive(Clone)]
pub struct ServerWssConfig {
    #[cfg(feature = "tls")]
    pub server_config: rustls::ServerConfig,
}

/// WSS configuration
#[derive(Clone)]
pub struct ClientWssConfig {
    #[cfg(feature = "tls")]
    pub client_config: rustls::ClientConfig,
    pub dns_name: String,
}

/// WS configuration
#[derive(Clone, Default)]
pub struct ServerWsConfig {
    pub tcp_config: TcpConfig,
    pub wss_config: Option<ServerWssConfig>,
}

/// WS configuration
#[derive(Clone, Default)]
pub struct ClientWsConfig {
    pub tcp_config: TcpConfig,
    pub wss_config: Option<ClientWssConfig>,
}

/// WS network connection implementation of the [`Connection`] trait.
pub struct WsConn<C> {
    // XXX: remove mutex
    inner: Mutex<WsStream<C>>,
    peer_endpoint: Endpoint,
    local_endpoint: Endpoint,
}

impl<C> WsConn<C>
where
    C: WebSocketCodec,
{
    /// Creates a new WsConn
    pub fn new(ws: WsStream<C>, peer_endpoint: Endpoint, local_endpoint: Endpoint) -> Self {
        Self {
            inner: Mutex::new(ws),
            peer_endpoint,
            local_endpoint,
        }
    }
}

#[async_trait]
impl<C> Connection for WsConn<C>
where
    C: WebSocketCodec,
{
    type Item = C::Item;
    fn peer_endpoint(&self) -> Result<Endpoint> {
        Ok(self.peer_endpoint.clone())
    }

    fn local_endpoint(&self) -> Result<Endpoint> {
        Ok(self.local_endpoint.clone())
    }

    async fn recv(&self) -> Result<Self::Item> {
        self.inner.lock().await.recv().await
    }

    async fn send(&self, msg: Self::Item) -> Result<()> {
        self.inner.lock().await.send(msg).await
    }
}

/// Ws network listener implementation of the `Listener` [`ConnListener`] trait.
pub struct WsListener<C> {
    inner: TcpListener,
    config: ServerWsConfig,
    codec: C,
    #[cfg(feature = "tls")]
    tls_acceptor: Option<TlsAcceptor>,
}

#[async_trait]
impl<C> ConnListener for WsListener<C>
where
    C: WebSocketCodec + Clone,
{
    type Item = C::Item;
    fn local_endpoint(&self) -> Result<Endpoint> {
        match self.config.wss_config {
            Some(_) => Ok(Endpoint::new_wss_addr(self.inner.local_addr()?)),
            None => Ok(Endpoint::new_ws_addr(self.inner.local_addr()?)),
        }
    }

    async fn accept(&self) -> Result<Conn<Self::Item>> {
        let (socket, _) = self.inner.accept().await?;
        socket.set_nodelay(self.config.tcp_config.nodelay)?;

        match &self.config.wss_config {
            #[cfg(feature = "tls")]
            Some(_) => match &self.tls_acceptor {
                Some(acceptor) => {
                    let peer_endpoint = socket.peer_addr().map(Endpoint::new_wss_addr)?;
                    let local_endpoint = socket.local_addr().map(Endpoint::new_wss_addr)?;

                    let tls_conn = acceptor.accept(socket).await?.into();
                    let conn = async_tungstenite::accept_async(tls_conn).await?;
                    Ok(Box::new(WsConn::new(
                        WsStream::new_wss(conn, self.codec.clone()),
                        peer_endpoint,
                        local_endpoint,
                    )))
                }
                None => unreachable!(),
            },
            None => {
                let peer_endpoint = socket.peer_addr().map(Endpoint::new_ws_addr)?;
                let local_endpoint = socket.local_addr().map(Endpoint::new_ws_addr)?;

                let conn = async_tungstenite::accept_async(socket).await?;

                Ok(Box::new(WsConn::new(
                    WsStream::new_ws(conn, self.codec.clone()),
                    peer_endpoint,
                    local_endpoint,
                )))
            }
            #[cfg(not(feature = "tls"))]
            _ => unreachable!(),
        }
    }
}

/// Connects to the given WS address and port.
pub async fn dial<C>(endpoint: &Endpoint, config: ClientWsConfig, codec: C) -> Result<WsConn<C>>
where
    C: WebSocketCodec,
{
    let addr = SocketAddr::try_from(endpoint.clone())?;
    let socket = TcpStream::connect(addr).await?;
    socket.set_nodelay(config.tcp_config.nodelay)?;

    match &config.wss_config {
        #[cfg(feature = "tls")]
        Some(conf) => {
            let peer_endpoint = socket.peer_addr().map(Endpoint::new_wss_addr)?;
            let local_endpoint = socket.local_addr().map(Endpoint::new_wss_addr)?;

            let connector = TlsConnector::from(Arc::new(conf.client_config.clone()));

            let altname = pki_types::ServerName::try_from(conf.dns_name.clone())?;
            let tls_conn = connector.connect(altname, socket).await?.into();
            let (conn, _resp) =
                async_tungstenite::client_async(endpoint.to_string(), tls_conn).await?;
            Ok(WsConn::new(
                WsStream::new_wss(conn, codec),
                peer_endpoint,
                local_endpoint,
            ))
        }
        None => {
            let peer_endpoint = socket.peer_addr().map(Endpoint::new_ws_addr)?;
            let local_endpoint = socket.local_addr().map(Endpoint::new_ws_addr)?;
            let (conn, _resp) =
                async_tungstenite::client_async(endpoint.to_string(), socket).await?;
            Ok(WsConn::new(
                WsStream::new_ws(conn, codec),
                peer_endpoint,
                local_endpoint,
            ))
        }
        #[cfg(not(feature = "tls"))]
        _ => unreachable!(),
    }
}

/// Listens on the given WS address and port.
pub async fn listen<C>(
    endpoint: &Endpoint,
    config: ServerWsConfig,
    codec: C,
) -> Result<WsListener<C>> {
    let addr = SocketAddr::try_from(endpoint.clone())?;

    let listener = TcpListener::bind(addr).await?;
    match &config.wss_config {
        #[cfg(feature = "tls")]
        Some(conf) => {
            let acceptor = TlsAcceptor::from(Arc::new(conf.server_config.clone()));
            Ok(WsListener {
                inner: listener,
                config,
                codec,
                tls_acceptor: Some(acceptor),
            })
        }
        None => Ok(WsListener {
            inner: listener,
            config,
            codec,
            #[cfg(feature = "tls")]
            tls_acceptor: None,
        }),
        #[cfg(not(feature = "tls"))]
        _ => unreachable!(),
    }
}

impl<C> From<WsListener<C>> for Listener<C::Item>
where
    C: WebSocketCodec + Clone,
{
    fn from(listener: WsListener<C>) -> Self {
        Box::new(listener)
    }
}

impl<C> ToConn for WsConn<C>
where
    C: WebSocketCodec,
{
    type Item = C::Item;
    fn to_conn(self) -> Conn<Self::Item> {
        Box::new(self)
    }
}

impl<C> ToListener for WsListener<C>
where
    C: WebSocketCodec + Clone,
{
    type Item = C::Item;
    fn to_listener(self) -> Listener<Self::Item> {
        self.into()
    }
}