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// 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.
use prelude::v1::*;
use ffi::CStr;
use io;
use libc::{self, c_int, size_t};
use str;
use sys::c;
use net::{SocketAddr, IpAddr};
use sys::fd::FileDesc;
use sys_common::AsInner;
pub use sys::{cvt, cvt_r};
pub type wrlen_t = size_t;
pub struct Socket(FileDesc);
pub fn init() {}
pub fn cvt_gai(err: c_int) -> io::Result<()> {
if err == 0 { return Ok(()) }
let detail = unsafe {
str::from_utf8(CStr::from_ptr(c::gai_strerror(err)).to_bytes()).unwrap()
.to_string()
};
Err(io::Error::new(io::ErrorKind::Other,
"failed to lookup address information", Some(detail)))
}
impl Socket {
pub fn new(addr: &SocketAddr, ty: c_int) -> io::Result<Socket> {
let fam = match addr.ip() {
IpAddr::V4(..) => libc::AF_INET,
IpAddr::V6(..) => libc::AF_INET6,
};
unsafe {
let fd = try!(cvt(libc::socket(fam, ty, 0)));
Ok(Socket(FileDesc::new(fd)))
}
}
pub fn accept(&self, storage: *mut libc::sockaddr,
len: *mut libc::socklen_t) -> io::Result<Socket> {
let fd = try!(cvt_r(|| unsafe {
libc::accept(self.0.raw(), storage, len)
}));
Ok(Socket(FileDesc::new(fd)))
}
pub fn duplicate(&self) -> io::Result<Socket> {
cvt(unsafe { libc::dup(self.0.raw()) }).map(|fd| {
Socket(FileDesc::new(fd))
})
}
pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
self.0.read(buf)
}
}
impl AsInner<c_int> for Socket {
fn as_inner(&self) -> &c_int { self.0.as_inner() }
}
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