mirror of https://github.com/fafhrd91/actix-web
102 lines
2.7 KiB
Rust
102 lines
2.7 KiB
Rust
//! Sets up a WebSocket server over TCP and TLS.
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//! Sends a heartbeat message every 4 seconds but does not respond to any incoming frames.
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extern crate tls_rustls_023 as rustls;
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use std::{
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io,
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pin::Pin,
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task::{Context, Poll},
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time::Duration,
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};
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use actix_http::{body::BodyStream, error::Error, ws, HttpService, Request, Response};
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use actix_rt::time::{interval, Interval};
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use actix_server::Server;
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use bytes::{Bytes, BytesMut};
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use bytestring::ByteString;
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use futures_core::{ready, Stream};
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use tokio_util::codec::Encoder;
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#[actix_rt::main]
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async fn main() -> io::Result<()> {
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env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
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Server::build()
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.bind("tcp", ("127.0.0.1", 8080), || {
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HttpService::build().h1(handler).tcp()
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})?
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.bind("tls", ("127.0.0.1", 8443), || {
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HttpService::build()
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.finish(handler)
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.rustls_0_23(tls_config())
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})?
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.run()
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.await
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}
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async fn handler(req: Request) -> Result<Response<BodyStream<Heartbeat>>, Error> {
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tracing::info!("handshaking");
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let mut res = ws::handshake(req.head())?;
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// handshake will always fail under HTTP/2
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tracing::info!("responding");
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res.message_body(BodyStream::new(Heartbeat::new(ws::Codec::new())))
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}
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struct Heartbeat {
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codec: ws::Codec,
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interval: Interval,
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}
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impl Heartbeat {
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fn new(codec: ws::Codec) -> Self {
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Self {
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codec,
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interval: interval(Duration::from_secs(4)),
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}
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}
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}
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impl Stream for Heartbeat {
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type Item = Result<Bytes, Error>;
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fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
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tracing::trace!("poll");
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ready!(self.as_mut().interval.poll_tick(cx));
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let mut buffer = BytesMut::new();
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self.as_mut()
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.codec
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.encode(
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ws::Message::Text(ByteString::from_static("hello world")),
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&mut buffer,
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)
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.unwrap();
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Poll::Ready(Some(Ok(buffer.freeze())))
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}
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}
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fn tls_config() -> rustls::ServerConfig {
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let rcgen::CertifiedKey { cert, key_pair } =
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rcgen::generate_simple_self_signed(["localhost".to_owned()]).unwrap();
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let cert_chain = vec![cert.der().clone()];
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let key_der = rustls_pki_types::PrivateKeyDer::Pkcs8(
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rustls_pki_types::PrivatePkcs8KeyDer::from(key_pair.serialize_der()),
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);
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let mut config = rustls::ServerConfig::builder()
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.with_no_client_auth()
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.with_single_cert(cert_chain, key_der)
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.unwrap();
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config.alpn_protocols.push(b"http/1.1".to_vec());
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config.alpn_protocols.push(b"h2".to_vec());
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config
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}
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