00ca534c4a
The old `tokio-core` crate is deprecated in favour of the `tokio` crate, which also provides the new multithreaded Tokio runtime. Although `h2` is generic over the runtime, the examples do depend on `tokio`. This branch update the example code to use the new `tokio` library rather than `tokio-core`. It also updates the examples in `RustDoc`. For the most part, this was pretty trivial --- simply replacing `handle.spawn(...)` with `tokio::spawn(...)` and `core.run(...)` with `tokio::run(...)`. There were a couple of cases where error and item types from spawned futures had to be mapped to `(), ()`. Alternatively, this could have been avoided by using the single-threaded runtime and calling `block_on` instead to await the value of those futures, but I thought it was better to reduce the amount of tokio-specific code in the examples. Signed-off-by: Eliza Weisman <eliza@buoyant.io>
94 lines
2.3 KiB
Rust
94 lines
2.3 KiB
Rust
extern crate env_logger;
|
|
extern crate futures;
|
|
extern crate h2;
|
|
extern crate http;
|
|
extern crate tokio;
|
|
|
|
use h2::client;
|
|
use h2::RecvStream;
|
|
|
|
use futures::*;
|
|
use http::*;
|
|
|
|
use tokio::net::TcpStream;
|
|
|
|
struct Process {
|
|
body: RecvStream,
|
|
trailers: bool,
|
|
}
|
|
|
|
impl Future for Process {
|
|
type Item = ();
|
|
type Error = h2::Error;
|
|
|
|
fn poll(&mut self) -> Poll<(), h2::Error> {
|
|
loop {
|
|
if self.trailers {
|
|
let trailers = try_ready!(self.body.poll_trailers());
|
|
|
|
println!("GOT TRAILERS: {:?}", trailers);
|
|
|
|
return Ok(().into());
|
|
} else {
|
|
match try_ready!(self.body.poll()) {
|
|
Some(chunk) => {
|
|
println!("GOT CHUNK = {:?}", chunk);
|
|
},
|
|
None => {
|
|
self.trailers = true;
|
|
},
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn main() {
|
|
let _ = env_logger::try_init();
|
|
|
|
let tcp = TcpStream::connect(&"127.0.0.1:5928".parse().unwrap());
|
|
|
|
let tcp = tcp.then(|res| {
|
|
let tcp = res.unwrap();
|
|
client::handshake(tcp)
|
|
}).then(|res| {
|
|
let (mut client, h2) = res.unwrap();
|
|
|
|
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(h2.map_err(|e| println!("GOT ERR={:?}", e)));
|
|
|
|
response
|
|
.and_then(|response| {
|
|
println!("GOT RESPONSE: {:?}", response);
|
|
|
|
// Get the body
|
|
let (_, body) = response.into_parts();
|
|
|
|
Process {
|
|
body,
|
|
trailers: false,
|
|
}
|
|
})
|
|
.map_err(|e| {
|
|
println!("GOT ERR={:?}", e);
|
|
})
|
|
});
|
|
|
|
tokio::run(tcp);
|
|
}
|