tokio-rs : two url example -> many url example

main.rs

extern crate curl;
extern crate futures;
extern crate time;
extern crate tokio_core;
extern crate tokio_curl;
extern crate tokio_timer;

use curl::easy::Easy;
use futures::{Future, Stream};
use futures::stream::futures_unordered;
use time::PreciseTime;
use tokio_core::reactor::Core;
use tokio_curl::Perform;
use tokio_curl::Session;


fn main() {
    let mut lp = Core::new().unwrap();
    let session = Session::new(lp.handle());
    let urls = ["http://www.github.com",
                "http://google.com",
                "http://apple.com"];
    let sessions = urls.into_iter()
        .map(|url| {
                 let mut ret = Easy::new();
                 ret.get(true).unwrap();
                 ret.url(url).unwrap();
                 ret.write_function(|data| Ok(data.len())).unwrap();
                 ret
             })
        .map(|s| session.perform(s));

    let req = futures_unordered(sessions).and_then(|mut result| {
                                                       println!("{:?}", result.response_code());
                                                       Ok(())
                                                   });
    lp.run(req.for_each(|_| Ok(()))).unwrap();
}