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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| use bytes::{Buf, BufMut}; | ||
| use futures::{future, Async, Future, Poll}; | ||
| use std::io::{self, Read, Write}; | ||
| use std::net::SocketAddr; | ||
| use tokio::io::{AsyncRead, AsyncWrite}; | ||
| use tokio::net::TcpStream; | ||
|
|
||
| use std::io::BufRead; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct ProxyTcpStream { | ||
| stream: TcpStream, | ||
| remote_addr: SocketAddr, | ||
| } | ||
|
|
||
| impl ProxyTcpStream { | ||
| pub fn peek(stream: TcpStream) -> impl Future<Item = Self, Error = io::Error> { | ||
| let mut bytes = [0; 107]; | ||
| let mut stream = Some(stream); | ||
| future::poll_fn(move || { | ||
| let n = try_ready!(stream.as_mut().unwrap().poll_peek(&mut bytes)); | ||
| // TODO: check bytes[..n] for PROXY line | ||
| let mut stream = stream.take().unwrap(); | ||
| let mut remote_addr: SocketAddr = stream.peer_addr().unwrap(); | ||
| let mut s = String::new(); | ||
| match bytes.as_ref().read_line(&mut s) { | ||
| Ok(ln) => { | ||
| if s.starts_with("PROXY TCP") { | ||
| // read that line for real (no peeking!) | ||
| let mut v = vec![0; ln]; | ||
| stream.read_exact(&mut v).unwrap(); | ||
| let mut split = s.split(" ").skip(2); | ||
| let ip = split.next().unwrap(); | ||
| let port = split.skip(1).next().unwrap(); | ||
| remote_addr = format!("{}:{}", ip, port).parse().unwrap(); | ||
| debug!("using proxy proto, remote addr: {}", remote_addr); | ||
| } | ||
| } | ||
| Err(e) => error!("error reading PROXY line: {}", e), | ||
| }; | ||
| Ok(Async::Ready(ProxyTcpStream { | ||
| stream, | ||
| remote_addr, | ||
| })) | ||
| }) | ||
| } | ||
|
|
||
| pub fn peer_addr(&self) -> io::Result<SocketAddr> { | ||
| Ok(self.remote_addr.clone()) | ||
| } | ||
| } | ||
|
|
||
| impl Read for ProxyTcpStream { | ||
| fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { | ||
| self.stream.read(buf) | ||
| } | ||
| } | ||
|
|
||
| impl Write for ProxyTcpStream { | ||
| fn write(&mut self, buf: &[u8]) -> io::Result<usize> { | ||
| self.stream.write(buf) | ||
| } | ||
| fn flush(&mut self) -> io::Result<()> { | ||
| self.stream.flush() | ||
| } | ||
| } | ||
|
|
||
| impl AsyncRead for ProxyTcpStream { | ||
| unsafe fn prepare_uninitialized_buffer(&self, buf: &mut [u8]) -> bool { | ||
| self.stream.prepare_uninitialized_buffer(buf) | ||
| } | ||
|
|
||
| fn read_buf<B: BufMut>(&mut self, buf: &mut B) -> Poll<usize, io::Error> { | ||
| <&TcpStream>::read_buf(&mut &self.stream, buf) | ||
| } | ||
| } | ||
|
|
||
| impl AsyncWrite for ProxyTcpStream { | ||
| fn shutdown(&mut self) -> Poll<(), io::Error> { | ||
| <&TcpStream>::shutdown(&mut &self.stream) | ||
| } | ||
|
|
||
| fn write_buf<B: Buf>(&mut self, buf: &mut B) -> Poll<usize, io::Error> { | ||
| <&TcpStream>::write_buf(&mut &self.stream, buf) | ||
| } | ||
| } |