🚧 wip: further POC
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			@ -1,12 +1,18 @@
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use clap::{App, SubCommand};
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use reqwest::Client;
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use tokio::{
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	io::AsyncWriteExt,
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	io::{
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		AsyncReadExt,
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		AsyncWriteExt,
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	},
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	net::{
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		TcpStream,
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		TcpListener,
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		tcp::OwnedReadHalf,
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	},
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	spawn,
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	stream::StreamExt,
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	sync::mpsc,
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};
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#[tokio::main]
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			@ -27,10 +33,10 @@ async fn main () -> anyhow::Result <()> {
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	let client = Client::builder ()
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	.build ()?;
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	let mut tcp_stream = if let Some (matches) = matches.subcommand_matches ("server") { 
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	let tcp_stream = if let Some (_matches) = matches.subcommand_matches ("server") { 
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		TcpStream::connect ("127.0.0.1:4010").await?
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	}
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	else if let Some (matches) = matches.subcommand_matches ("client") {
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	else if let Some (_matches) = matches.subcommand_matches ("client") {
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		let mut listener = TcpListener::bind ("127.0.0.1:4020").await?;
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		let (stream, _addr) = listener.accept ().await?;
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		stream
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			@ -39,12 +45,47 @@ async fn main () -> anyhow::Result <()> {
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		panic! ("Must use server or client subcommand.");
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	};
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	let (tcp_upstream, mut writer) = tcp_stream.into_split ();
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	let (upstream_tx, upstream_rx) = mpsc::channel (1);
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	spawn (async move {
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		handle_upstream (tcp_upstream, upstream_tx).await
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	});
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	let upstream = client.post ("http://127.0.0.1:4003/").body (reqwest::Body::wrap_stream (upstream_rx));
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	spawn (async move {
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		upstream.send ().await
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	});
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	let resp = client.get ("http://127.0.0.1:4003/").send ().await?;
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	let mut downstream = resp.bytes_stream ();
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	while let Some (Ok (item)) = downstream.next ().await {
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		println! ("Chunk: {:?}", item);
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		tcp_stream.write_all (&item).await?;
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		writer.write_all (&item).await?;
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	}
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	Ok (())
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}
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async fn handle_upstream (
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	mut tcp_upstream: OwnedReadHalf,
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	mut upstream_tx: mpsc::Sender <Result <Vec <u8>, anyhow::Error>>
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) -> anyhow::Result <()> {
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	loop {
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		let mut buffer = vec! [0u8; 65_536];
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		let bytes_read = tcp_upstream.read (&mut buffer).await?;
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		buffer.truncate (bytes_read);
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		println! ("Read {} bytes", bytes_read);
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		if bytes_read == 0 {
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			break;
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		}
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		upstream_tx.send (Ok (buffer)).await?;
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	}
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	Ok (())
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			@ -12,6 +12,7 @@ use hyper::{
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};
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use tokio::{
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	spawn,
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	stream::StreamExt,
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	sync::mpsc,
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	time::interval,
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};
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			@ -78,6 +79,9 @@ impl HttpService {
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		if req.method () == Method::GET {
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			return Self::handle_gets (req, &*state).await;
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		}
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		if req.method () == Method::POST {
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			return Self::handle_posts (req, &*state).await;
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		}
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		Ok::<_, anyhow::Error> (Response::builder ()
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		.body (Body::from ("hello\n"))?)
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			@ -99,6 +103,21 @@ impl HttpService {
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		.body (Body::wrap_stream (rx))?)
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	}
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	async fn handle_posts (req: Request <Body>, state: &RelayState)
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	-> Result <Response <Body>, anyhow::Error>
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	{
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		let id = Ulid::new ().to_string ();
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		trace! ("Upstream {} started", id);
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		let mut body = req.into_body ();
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		while let Some (Ok (item)) = body.next ().await {
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			println! ("Chunk: {:?}", item);
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		}
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		trace! ("Upstream {} ended", id);
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		Ok::<_, anyhow::Error> (Response::builder ()
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		.body (Body::from ("hello\n"))?)
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	}
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	async fn handle_downstream (mut tx: mpsc::Sender <anyhow::Result <String>>) -> Result <(), anyhow::Error> {
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		let mut int = interval (Duration::from_secs (1));
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		let mut counter = 0u64;
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