49 lines
1.5 KiB
Rust
49 lines
1.5 KiB
Rust
#![feature(async_await)]
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#![deny(warnings)]
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use hyper::{Client, Error, Server};
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use hyper::service::{make_service_fn, service_fn};
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use std::net::SocketAddr;
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#[tokio::main]
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async fn main() {
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pretty_env_logger::init();
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let in_addr = ([127, 0, 0, 1], 3001).into();
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let out_addr: SocketAddr = ([127, 0, 0, 1], 3000).into();
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let client_main = Client::new();
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let out_addr_clone = out_addr.clone();
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// The closure inside `make_service_fn` is run for each connection,
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// creating a 'service' to handle requests for that specific connection.
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let make_service = make_service_fn(move |_| {
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let client = client_main.clone();
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async move {
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// This is the `Service` that will handle the connection.
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// `service_fn` is a helper to convert a function that
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// returns a Response into a `Service`.
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Ok::<_, Error>(service_fn(move |mut req| {
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let uri_string = format!("http://{}/{}",
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out_addr_clone,
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req.uri().path_and_query().map(|x| x.as_str()).unwrap_or(""));
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let uri = uri_string.parse().unwrap();
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*req.uri_mut() = uri;
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client.request(req)
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}))
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}
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});
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let server = Server::bind(&in_addr)
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.serve(make_service);
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println!("Listening on http://{}", in_addr);
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println!("Proxying on http://{}", out_addr);
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if let Err(e) = server.await {
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eprintln!("server error: {}", e);
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}
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}
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