stuff

test-services/tcpecho/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "tcpecho"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+eyre.workspace = true

test-services/tcpecho/src/main.rs

@@ -0,0 +1,35 @@
+use std::{
+    io::{Read, Write},
+    net::{TcpListener, TcpStream},
+};
+
+use eyre::{Context, Result};
+
+fn main() -> Result<()> {
+    let addr = std::env::var("BIND_ADDR")
+        .ok()
+        .or(std::env::args().nth(1))
+        .unwrap_or("127.0.0.1:1000".to_owned());
+    println!("Listening on address {addr}");
+    let stream = TcpListener::bind(&addr).wrap_err_with(|| format!("binding socket on {addr}"))?;
+
+    loop {
+        let next = stream.accept()?;
+        std::thread::spawn(move || {
+            if let Err(err) = echo(next.0) {
+                eprintln!("{err:?}");
+            }
+        });
+    }
+}
+
+fn echo(mut stream: TcpStream) -> Result<()> {
+    let mut buf = [0; 1024];
+    loop {
+        let read = stream.read(&mut buf)?;
+        if read == 0 {
+            return Ok(());
+        }
+        stream.write_all(&buf[..read])?;
+    }
+}