mirror of
https://github.com/fafhrd91/actix-net
synced 2024-11-27 21:22:57 +01:00
101 lines
3.1 KiB
Rust
101 lines
3.1 KiB
Rust
//! Simple composite-service TCP echo server.
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//!
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//! Using the following command:
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//!
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//! ```sh
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//! nc 127.0.0.1 8080
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//! ```
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//!
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//! Start typing. When you press enter the typed line will be echoed back. The server will log
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//! the length of each line it echos and the total size of data sent when the connection is closed.
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use std::{
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io,
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sync::{
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atomic::{AtomicUsize, Ordering},
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Arc,
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},
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};
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use actix_rt::net::TcpStream;
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use actix_server::Server;
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use actix_service::{fn_service, ServiceFactoryExt as _};
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use bytes::BytesMut;
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use futures_util::future::ok;
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use tokio::io::{AsyncReadExt as _, AsyncWriteExt as _};
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async fn run() -> io::Result<()> {
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env_logger::init_from_env(env_logger::Env::default().default_filter_or("info"));
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let count = Arc::new(AtomicUsize::new(0));
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let addr = ("127.0.0.1", 8080);
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tracing::info!("starting server on port: {}", &addr.0);
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// Bind socket address and start worker(s). By default, the server uses the number of physical
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// CPU cores as the worker count. For this reason, the closure passed to bind needs to return
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// a service *factory*; so it can be created once per worker.
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Server::build()
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.bind("echo", addr, move || {
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let count = Arc::clone(&count);
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let num2 = Arc::clone(&count);
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fn_service(move |mut stream: TcpStream| {
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let count = Arc::clone(&count);
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async move {
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let num = count.fetch_add(1, Ordering::SeqCst);
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let num = num + 1;
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let mut size = 0;
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let mut buf = BytesMut::new();
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loop {
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match stream.read_buf(&mut buf).await {
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// end of stream; bail from loop
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Ok(0) => break,
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// more bytes to process
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Ok(bytes_read) => {
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tracing::info!("[{}] read {} bytes", num, bytes_read);
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stream.write_all(&buf[size..]).await.unwrap();
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size += bytes_read;
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}
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// stream error; bail from loop with error
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Err(err) => {
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tracing::error!("stream error: {:?}", err);
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return Err(());
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}
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}
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}
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// send data down service pipeline
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Ok((buf.freeze(), size))
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}
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})
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.map_err(|err| tracing::error!("service error: {:?}", err))
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.and_then(move |(_, size)| {
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let num = num2.load(Ordering::SeqCst);
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tracing::info!("[{}] total bytes read: {}", num, size);
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ok(size)
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})
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})?
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.workers(2)
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.run()
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.await
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}
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#[tokio::main]
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async fn main() -> io::Result<()> {
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run().await?;
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Ok(())
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}
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// alternatively:
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// #[actix_rt::main]
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// async fn main() -> io::Result<()> {
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// run().await?;
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// Ok(())
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// }
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