use std::{
    env, fs,
    io::{self, Read as _, Write as _},
    net::TcpStream,
    path::PathBuf,
};

fn main() -> io::Result<()> {
    let mut v = Vec::new();
    let mut server = TcpStream::connect("example.com:80")?;
    server.write_all("GET / HTTP/1.0\r\nHost: example.com\r\n\r\n".as_bytes())?;
    server.read_to_end(&mut v)?;
    let example = PathBuf::from(env::var("OUT_DIR").expect("build script always has OUT_DIR set"))
        .join("example");
    fs::write(&example, v)?;
    println!("cargo:warning=wrote {}", example.display());
    Ok(())
}