use std::{env, io}; use actix_http::{Error, HttpService, Request, Response}; use actix_server::Server; use bytes::BytesMut; use futures_util::StreamExt; use http::header::HeaderValue; use log::info; #[actix_rt::main] async fn main() -> io::Result<()> { env::set_var("RUST_LOG", "echo=info"); env_logger::init(); Server::build() .bind("echo", "127.0.0.1:8080", || { HttpService::build() .client_timeout(1000) .client_disconnect(1000) .finish(|mut req: Request| async move { let mut body = BytesMut::new(); while let Some(item) = req.payload().next().await { body.extend_from_slice(&item?); } info!("request body: {:?}", body); Ok::<_, Error>( Response::Ok() .insert_header(( "x-head", HeaderValue::from_static("dummy value!"), )) .body(body), ) }) .tcp() })? .run() .await }