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Cargo.toml

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+[package]
+name = "browser-engineering"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.68"
+hyper = { version = "0.14.23", features = ["full"] }
+tokio = { version = "1.24.1", features = ["full"] }

src/main.rs

@@ -0,0 +1,45 @@
+use std::env::args;
+
+use anyhow::anyhow;
+use hyper::Body;
+use hyper::{Request, Uri};
+use tokio::net::TcpStream;
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    let arguments: Vec<String> = args().collect();
+
+    let url_text = arguments.get(1).ok_or_else(|| anyhow!("Url required"))?;
+    let url = url_text.parse::<Uri>()?;
+
+    let host = url.host().unwrap();
+    let port = url.port_u16().unwrap_or(80);
+    let address = format!("{}:{}", host, port);
+
+    let stream = TcpStream::connect(address).await?;
+
+    let (mut sender, conn) = hyper::client::conn::handshake(stream).await?;
+
+    tokio::task::spawn(async move {
+        if let Err(err) = conn.await {
+            eprintln!("connection failed: {}", err);
+        }
+    });
+
+    let authority = url.authority().unwrap().clone();
+
+    let req = Request::builder()
+        .uri(url)
+        .header(hyper::header::HOST, authority.as_str())
+        .body(Body::from(""))?;
+
+    let res = sender.send_request(req).await?;
+    let body = res.into_body();
+    let body_bytes = hyper::body::to_bytes(body).await?;
+
+    let body_text = String::from_utf8(body_bytes.to_vec())?;
+
+    println!("{}", body_text);
+
+    Ok(())
+}