88 lines
2.1 KiB
Rust
88 lines
2.1 KiB
Rust
#![feature(async_await)]
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use futures::{ready, Stream};
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use h2::client;
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use h2::RecvStream;
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use http::{HeaderMap, Request};
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use std::future::Future;
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use std::pin::Pin;
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use std::task::{Context, Poll};
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use std::error::Error;
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use tokio::net::TcpStream;
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struct Process {
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body: RecvStream,
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trailers: bool,
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}
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impl Future for Process {
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type Output = Result<(), h2::Error>;
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fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
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loop {
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if self.trailers {
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let trailers = ready!(self.body.poll_trailers(cx));
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println!("GOT TRAILERS: {:?}", trailers);
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return Poll::Ready(Ok(()));
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} else {
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match ready!(Pin::new(&mut self.body).poll_next(cx)) {
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Some(Ok(chunk)) => {
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println!("GOT CHUNK = {:?}", chunk);
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}
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Some(Err(e)) => return Poll::Ready(Err(e)),
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None => {
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self.trailers = true;
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}
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}
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}
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}
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}
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}
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#[tokio::main]
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pub async fn main() -> Result<(), Box<dyn Error>> {
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let _ = env_logger::try_init();
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let tcp = TcpStream::connect(&"127.0.0.1:5928".parse().unwrap()).await?;
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let (mut client, h2) = client::handshake(tcp).await?;
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println!("sending request");
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let request = Request::builder()
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.uri("https://http2.akamai.com/")
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.body(())
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.unwrap();
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let mut trailers = HeaderMap::new();
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trailers.insert("zomg", "hello".parse().unwrap());
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let (response, mut stream) = client.send_request(request, false).unwrap();
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// send trailers
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stream.send_trailers(trailers).unwrap();
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// Spawn a task to run the conn...
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tokio::spawn(async move {
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if let Err(e) = h2.await {
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println!("GOT ERR={:?}", e);
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}
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});
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let response = response.await?;
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println!("GOT RESPONSE: {:?}", response);
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// Get the body
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let (_, body) = response.into_parts();
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Process {
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body,
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trailers: false,
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}
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.await?;
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Ok(())
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}
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