我刚刚开始在Rust中尝试使用futures/tokio。我可以只使用futures或只使用streams进行基本操作。我想知道如何在future和stream之间进行选择。
我该如何扩展tokio文档中的玩具问题,以使用tokio_timer::Timer
来进行定时的HTTPS请求?
extern crate futures; // v0.1 (old)
extern crate native_tls;
extern crate tokio_core;
extern crate tokio_io;
extern crate tokio_tls;
use std::io;
use std::net::ToSocketAddrs;
use futures::Future;
use native_tls::TlsConnector;
use tokio_core::net::TcpStream;
use tokio_core::reactor::Core;
use tokio_tls::TlsConnectorExt;
fn main() {
let mut core = Core::new().unwrap();
let handle = core.handle();
let addr = "www.rust-lang.org:443".to_socket_addrs().unwrap().next().unwrap();
let cx = TlsConnector::builder().unwrap().build().unwrap();
let socket = TcpStream::connect(&addr, &handle);
let tls_handshake = socket.and_then(|socket| {
let tls = cx.connect_async("www.rust-lang.org", socket);
tls.map_err(|e| {
io::Error::new(io::ErrorKind::Other, e)
})
});
let request = tls_handshake.and_then(|socket| {
tokio_io::io::write_all(socket, "\
GET / HTTP/1.0\r\n\
Host: www.rust-lang.org\r\n\
\r\n\
".as_bytes())
});
let response = request.and_then(|(socket, _request)| {
tokio_io::io::read_to_end(socket, Vec::new())
});
let (_socket, data) = core.run(response).unwrap();
println!("{}", String::from_utf8_lossy(&data));
}