scan_short.rs

let scanner = iter(port_iter_res).map(|port: u16| {
	let saddr = SocketAddr::new(addr, port);
	let strm = pool2.handle().tcp_connect(&saddr);
	strm.then(|r| -> Result<_, ()> {
		let status = match r {    	
			Ok(s) => {		
	    		let _ = s.shutdown(Shutdown::Both);
	    		"open"
	    	}
	
	    	Err(_) => "closed",
		};

		println!("{}/tcp\t{}", port, status);
		Ok(())
	})
});

pool.run(scanner.into_future());

/*
src\main.rs:90:2: 90:6 error: cannot borrow `pool` as mutable because it is also borrowed as immutable [E0502]
src\main.rs:90  pool.run(scanner.into_future());
                ^~~~
src\main.rs:72:43: 72:54 note: immutable borrow occurs here
src\main.rs:72     let scanner = iter(port_iter_res).map(|port: u16| {
                                                         ^~~~~~~~~~~
src\main.rs:91:1: 91:2 note: immutable borrow ends here
src\main.rs:91 }
               ^
src\main.rs:74:17: 74:21 note: previous borrow occurs due to use of `pool` in closure
src\main.rs:74          let strm = pool.handle().tcp_connect(&saddr);
                                   ^~~~
src\main.rs:90:2: 90:6 help: run `rustc --explain E0502` to see a detailed explanation
src\main.rs:75:16: 75:36 error: `port` does not live long enough
src\main.rs:75          strm.then(|r| -> Result<_, ()> {
                                  ^~~~~~~~~~~~~~~~~~~~
src\main.rs:88:8: 91:2 note: reference must be valid for the block suffix following statement 5 at 88:7...
src\main.rs:88     });
                      ^
src\main.rs:72:55: 88:6 note: ...but borrowed value is only valid for the scope of function body at 72:54
src\main.rs:72     let scanner = iter(port_iter_res).map(|port: u16| {
*/