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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use option::{Option, Some, None};
use result::{Ok, Err};
use rt::io::io_error;
use rt::io::net::ip::IpAddr;
use rt::rtio::{IoFactory, IoFactoryObject};
use rt::local::Local;
pub mod tcp;
pub mod udp;
pub mod ip;
#[cfg(unix)]
pub mod unix;
/// Simplistic name resolution
pub fn get_host_addresses(host: &str) -> Option<~[IpAddr]> {
/*!
* Get the IP addresses for a given host name.
*
* Raises io_error on failure.
*/
let ipaddrs = unsafe {
let io: *mut IoFactoryObject = Local::unsafe_borrow();
(*io).get_host_addresses(host)
};
match ipaddrs {
Ok(i) => Some(i),
Err(ioerr) => {
io_error::cond.raise(ioerr);
None
}
}
}
#[cfg(test)]
mod test {
use option::Some;
use rt::io::net::ip::Ipv4Addr;
use super::*;
#[test]
fn dns_smoke_test() {
let ipaddrs = get_host_addresses("localhost").unwrap();
let mut found_local = false;
let local_addr = &Ipv4Addr(127, 0, 0, 1);
for addr in ipaddrs.iter() {
found_local = found_local || addr == local_addr;
}
assert!(found_local);
}
}
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