tokio-rustls/tokio-native-tls/examples/echo.rs

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2020-01-09 23:36:35 +00:00
#![warn(rust_2018_idioms)]
// A tiny async TLS echo server with Tokio
use native_tls;
use native_tls::Identity;
use tokio;
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tokio::net::TcpListener;
/**
an example to setup a tls server.
how to test:
wget https://127.0.0.1:12345 --no-check-certificate
*/
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
// Bind the server's socket
let addr = "127.0.0.1:12345".to_string();
let tcp: TcpListener = TcpListener::bind(&addr).await?;
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// Create the TLS acceptor.
let der = include_bytes!("identity.p12");
let cert = Identity::from_pkcs12(der, "mypass")?;
let tls_acceptor =
tokio_native_tls::TlsAcceptor::from(native_tls::TlsAcceptor::builder(cert).build()?);
loop {
// Asynchronously wait for an inbound socket.
let (socket, remote_addr) = tcp.accept().await?;
let tls_acceptor = tls_acceptor.clone();
println!("accept connection from {}", remote_addr);
tokio::spawn(async move {
// Accept the TLS connection.
let mut tls_stream = tls_acceptor.accept(socket).await.expect("accept error");
// In a loop, read data from the socket and write the data back.
let mut buf = [0; 1024];
let n = tls_stream
.read(&mut buf)
.await
.expect("failed to read data from socket");
if n == 0 {
return;
}
println!("read={}", unsafe {
String::from_utf8_unchecked(buf[0..n].into())
});
tls_stream
.write_all(&buf[0..n])
.await
.expect("failed to write data to socket");
});
}
}