blob: 6399466a38724edce7c54d48efdf79750d7e6198 [file] [log] [blame]
// Copyright 2015 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.
#![allow(bad_style)]
use std::io;
use std::mem;
use std::net::{TcpListener, TcpStream, UdpSocket};
use std::os::windows::io::FromRawSocket;
use std::sync::{Once, ONCE_INIT};
use winapi::*;
use ws2_32::*;
use kernel32::*;
const WSA_FLAG_OVERLAPPED: DWORD = 0x01;
const HANDLE_FLAG_INHERIT: DWORD = 0x00000001;
pub mod c {
pub use winapi::*;
pub use ws2_32::*;
pub use winapi::SOCKADDR as sockaddr;
pub use winapi::SOCKADDR_STORAGE as sockaddr_storage;
pub use winapi::SOCKADDR_IN as sockaddr_in;
pub fn sockaddr_in_u32(sa: &sockaddr_in) -> u32 {
::ntoh(sa.sin_addr.S_un)
}
}
mod impls;
fn init() {
static INIT: Once = ONCE_INIT;
INIT.call_once(|| {
// Initialize winsock through the standard library by just creating a
// dummy socket. Whether this is successful or not we drop the result as
// libstd will be sure to have initialized winsock.
let _ = UdpSocket::bind("127.0.0.1:34254");
});
}
pub struct Socket {
socket: SOCKET,
}
impl Socket {
pub fn new(family: c_int, ty: c_int) -> io::Result<Socket> {
init();
let socket = try!(unsafe {
match WSASocketW(family, ty, 0, 0 as *mut _, 0,
WSA_FLAG_OVERLAPPED) {
INVALID_SOCKET => Err(io::Error::last_os_error()),
n => Ok(Socket { socket: n }),
}
});
try!(socket.set_no_inherit());
Ok(socket)
}
pub fn raw(&self) -> SOCKET { self.socket }
fn into_socket(self) -> SOCKET {
let socket = self.socket;
mem::forget(self);
socket
}
pub fn into_tcp_listener(self) -> TcpListener {
unsafe { TcpListener::from_raw_socket(self.into_socket()) }
}
pub fn into_tcp_stream(self) -> TcpStream {
unsafe { TcpStream::from_raw_socket(self.into_socket()) }
}
pub fn into_udp_socket(self) -> UdpSocket {
unsafe { UdpSocket::from_raw_socket(self.into_socket()) }
}
fn set_no_inherit(&self) -> io::Result<()> {
::cvt_win(unsafe {
SetHandleInformation(self.socket as HANDLE, HANDLE_FLAG_INHERIT, 0)
}).map(|_| ())
}
}
impl ::FromInner for Socket {
type Inner = SOCKET;
fn from_inner(socket: SOCKET) -> Socket {
Socket { socket: socket }
}
}
impl Drop for Socket {
fn drop(&mut self) {
unsafe {
let _ = closesocket(self.socket);
}
}
}