0c8ee93d7f
This removes the `tcp` feature from hyper's `Cargo.toml`, and the code it enabled: - `HttpConnector` - `GaiResolver` - `AddrStream` And parts of `Client` and `Server` that used those types. Alternatives will be available in the `hyper-util` crate. Closes #2856 Co-authored-by: MrGunflame <mrgunflame@protonmail.com>
66 lines
1.9 KiB
Rust
66 lines
1.9 KiB
Rust
#![deny(warnings)]
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#![warn(rust_2018_idioms)]
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use std::env;
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use hyper::{body::HttpBody as _, Body, Request};
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use tokio::io::{self, AsyncWriteExt as _};
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use tokio::net::TcpStream;
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// A simple type alias so as to DRY.
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type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
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#[tokio::main]
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async fn main() -> Result<()> {
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pretty_env_logger::init();
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// Some simple CLI args requirements...
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let url = match env::args().nth(1) {
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Some(url) => url,
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None => {
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println!("Usage: client <url>");
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return Ok(());
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}
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};
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// HTTPS requires picking a TLS implementation, so give a better
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// warning if the user tries to request an 'https' URL.
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let url = url.parse::<hyper::Uri>().unwrap();
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if url.scheme_str() != Some("http") {
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println!("This example only works with 'http' URLs.");
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return Ok(());
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}
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fetch_url(url).await
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}
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async fn fetch_url(url: hyper::Uri) -> Result<()> {
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let host = url.host().expect("uri has no host");
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let port = url.port_u16().unwrap_or(80);
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let addr = format!("{}:{}", host, port);
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let stream = TcpStream::connect(addr).await?;
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let (mut sender, conn) = hyper::client::conn::handshake(stream).await?;
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tokio::task::spawn(async move {
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if let Err(err) = conn.await {
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println!("Connection failed: {:?}", err);
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}
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});
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let req = Request::builder().uri(url).body(Body::empty()).unwrap();
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let mut res = sender.send_request(req).await?;
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println!("Response: {}", res.status());
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println!("Headers: {:#?}\n", res.headers());
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// Stream the body, writing each chunk to stdout as we get it
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// (instead of buffering and printing at the end).
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while let Some(next) = res.data().await {
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let chunk = next?;
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io::stdout().write_all(&chunk).await?;
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}
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println!("\n\nDone!");
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Ok(())
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}
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