forked from hyperium/h2
/
client.rs
87 lines (68 loc) · 2.09 KB
/
client.rs
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#![feature(async_await)]
use futures::{ready, Stream};
use h2::client;
use h2::RecvStream;
use http::{HeaderMap, Request};
use std::future::Future;
use std::pin::Pin;
use std::task::{Context, Poll};
use std::error::Error;
use tokio::net::TcpStream;
struct Process {
body: RecvStream,
trailers: bool,
}
impl Future for Process {
type Output = Result<(), h2::Error>;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
loop {
if self.trailers {
let trailers = ready!(self.body.poll_trailers(cx));
println!("GOT TRAILERS: {:?}", trailers);
return Poll::Ready(Ok(()));
} else {
match ready!(Pin::new(&mut self.body).poll_next(cx)) {
Some(Ok(chunk)) => {
println!("GOT CHUNK = {:?}", chunk);
}
Some(Err(e)) => return Poll::Ready(Err(e)),
None => {
self.trailers = true;
}
}
}
}
}
}
#[tokio::main]
pub async fn main() -> Result<(), Box<dyn Error>> {
let _ = env_logger::try_init();
let tcp = TcpStream::connect(&"127.0.0.1:5928".parse().unwrap()).await?;
let (mut client, h2) = client::handshake(tcp).await?;
println!("sending request");
let request = Request::builder()
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let mut trailers = HeaderMap::new();
trailers.insert("zomg", "hello".parse().unwrap());
let (response, mut stream) = client.send_request(request, false).unwrap();
// send trailers
stream.send_trailers(trailers).unwrap();
// Spawn a task to run the conn...
tokio::spawn(async move {
if let Err(e) = h2.await {
println!("GOT ERR={:?}", e);
}
});
let response = response.await?;
println!("GOT RESPONSE: {:?}", response);
// Get the body
let (_, body) = response.into_parts();
Process {
body,
trailers: false,
}
.await?;
Ok(())
}