91 lines
3.0 KiB
Markdown
91 lines
3.0 KiB
Markdown
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# hyper-reverse-proxy
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[](https://travis-ci.org/brendanzab/hyper-reverse-proxy)
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[](https://docs.rs/hyper-reverse-proxy)
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[](https://crates.io/crates/hyper-reverse-proxy)
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[](https://github.com/brendanzab/hyper-reverse-proxy/blob/master/LICENSE)
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A simple reverse proxy, to be used with [Hyper].
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The implementation ensures that [Hop-by-hop headers] are stripped correctly in both directions,
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and adds the client's IP address to a comma-space-separated list of forwarding addresses in the
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`X-Forwarded-For` header.
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The implementation is based on Go's [`httputil.ReverseProxy`].
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[Hyper]: http://hyper.rs/
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[Hop-by-hop headers]: http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html
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[`httputil.ReverseProxy`]: https://golang.org/pkg/net/http/httputil/#ReverseProxy
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# Example
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Add these dependencies to your `Cargo.toml` file.
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```toml
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[dependencies]
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hyper-reverse-proxy = "0.4"
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hyper = "0.12"
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futures = "0.1"
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```
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The following example will set up a reverse proxy listening on `127.0.0.1:13900`,
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and will proxy these calls:
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* `"/target/first"` will be proxied to `http://127.0.0.1:13901`
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* `"/target/second"` will be proxied to `http://127.0.0.1:13902`
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* All other URLs will be handled by `debug_request` function, that will display request information.
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```rust,no_run
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use hyper::server::conn::AddrStream;
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use hyper::{Body, Request, Response, Server};
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use hyper::service::{service_fn, make_service_fn};
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use futures::future::{self, Future};
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type BoxFut = Box<Future<Item=Response<Body>, Error=hyper::Error> + Send>;
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fn debug_request(req: Request<Body>) -> BoxFut {
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let body_str = format!("{:?}", req);
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let response = Response::new(Body::from(body_str));
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Box::new(future::ok(response))
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}
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fn main() {
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// This is our socket address...
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let addr = ([127, 0, 0, 1], 13900).into();
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// A `Service` is needed for every connection.
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let make_svc = make_service_fn(|socket: &AddrStream| {
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let remote_addr = socket.remote_addr();
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service_fn(move |req: Request<Body>| { // returns BoxFut
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if req.uri().path().starts_with("/target/first") {
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// will forward requests to port 13901
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return hyper_reverse_proxy::call(remote_addr.ip(), "http://127.0.0.1:13901", req)
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} else if req.uri().path().starts_with("/target/second") {
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// will forward requests to port 13902
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return hyper_reverse_proxy::call(remote_addr.ip(), "http://127.0.0.1:13902", req)
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} else {
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debug_request(req)
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}
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})
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});
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let server = Server::bind(&addr)
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.serve(make_svc)
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.map_err(|e| eprintln!("server error: {}", e));
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println!("Running server on {:?}", addr);
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// Run this server for... forever!
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hyper::rt::run(server);
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}
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```
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