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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 io::net::ip::SocketAddr;
use io::{Reader, Writer};
use io::{io_error, EndOfFile};
use rt::rtio::{RtioSocket, RtioUdpSocket, IoFactory, LocalIo};
pub struct UdpSocket {
priv obj: ~RtioUdpSocket
}
impl UdpSocket {
pub fn bind(addr: SocketAddr) -> Option<UdpSocket> {
LocalIo::maybe_raise(|io| {
io.udp_bind(addr).map(|s| UdpSocket { obj: s })
})
}
pub fn recvfrom(&mut self, buf: &mut [u8]) -> Option<(uint, SocketAddr)> {
match self.obj.recvfrom(buf) {
Ok((nread, src)) => Some((nread, src)),
Err(ioerr) => {
// EOF is indicated by returning None
if ioerr.kind != EndOfFile {
io_error::cond.raise(ioerr);
}
None
}
}
}
pub fn sendto(&mut self, buf: &[u8], dst: SocketAddr) {
match self.obj.sendto(buf, dst) {
Ok(_) => (),
Err(ioerr) => io_error::cond.raise(ioerr),
}
}
pub fn connect(self, other: SocketAddr) -> UdpStream {
UdpStream { socket: self, connectedTo: other }
}
pub fn socket_name(&mut self) -> Option<SocketAddr> {
match self.obj.socket_name() {
Ok(sn) => Some(sn),
Err(ioerr) => {
debug!("failed to get socket name: {:?}", ioerr);
io_error::cond.raise(ioerr);
None
}
}
}
}
pub struct UdpStream {
priv socket: UdpSocket,
priv connectedTo: SocketAddr
}
impl UdpStream {
pub fn as_socket<T>(&mut self, f: |&mut UdpSocket| -> T) -> T {
f(&mut self.socket)
}
pub fn disconnect(self) -> UdpSocket { self.socket }
}
impl Reader for UdpStream {
fn read(&mut self, buf: &mut [u8]) -> Option<uint> {
let peer = self.connectedTo;
self.as_socket(|sock| {
match sock.recvfrom(buf) {
Some((_nread, src)) if src != peer => Some(0),
Some((nread, _src)) => Some(nread),
None => None,
}
})
}
fn eof(&mut self) -> bool { fail!() }
}
impl Writer for UdpStream {
fn write(&mut self, buf: &[u8]) {
self.as_socket(|sock| sock.sendto(buf, self.connectedTo));
}
}
#[cfg(test)]
mod test {
use super::*;
use io::net::ip::{SocketAddr};
iotest!(fn bind_error() {
let mut called = false;
io_error::cond.trap(|e| {
assert_eq!(e.kind, PermissionDenied);
called = true;
}).inside(|| {
let addr = SocketAddr { ip: Ipv4Addr(0, 0, 0, 0), port: 1 };
let socket = UdpSocket::bind(addr);
assert!(socket.is_none());
});
assert!(called);
} #[ignore(cfg(windows))])
iotest!(fn socket_smoke_test_ip4() {
let server_ip = next_test_ip4();
let client_ip = next_test_ip4();
let (port, chan) = Chan::new();
let (port2, chan2) = Chan::new();
do spawn {
match UdpSocket::bind(client_ip) {
Some(ref mut client) => {
port.recv();
client.sendto([99], server_ip)
}
None => fail!()
}
chan2.send(());
}
match UdpSocket::bind(server_ip) {
Some(ref mut server) => {
chan.send(());
let mut buf = [0];
match server.recvfrom(buf) {
Some((nread, src)) => {
assert_eq!(nread, 1);
assert_eq!(buf[0], 99);
assert_eq!(src, client_ip);
}
None => fail!()
}
}
None => fail!()
}
port2.recv();
})
iotest!(fn socket_smoke_test_ip6() {
let server_ip = next_test_ip6();
let client_ip = next_test_ip6();
let (port, chan) = Chan::<()>::new();
do spawn {
match UdpSocket::bind(client_ip) {
Some(ref mut client) => {
port.recv();
client.sendto([99], server_ip)
}
None => fail!()
}
}
match UdpSocket::bind(server_ip) {
Some(ref mut server) => {
chan.send(());
let mut buf = [0];
match server.recvfrom(buf) {
Some((nread, src)) => {
assert_eq!(nread, 1);
assert_eq!(buf[0], 99);
assert_eq!(src, client_ip);
}
None => fail!()
}
}
None => fail!()
}
})
iotest!(fn stream_smoke_test_ip4() {
let server_ip = next_test_ip4();
let client_ip = next_test_ip4();
let (port, chan) = Chan::new();
let (port2, chan2) = Chan::new();
do spawn {
match UdpSocket::bind(client_ip) {
Some(client) => {
let client = ~client;
let mut stream = client.connect(server_ip);
port.recv();
stream.write([99]);
}
None => fail!()
}
chan2.send(());
}
match UdpSocket::bind(server_ip) {
Some(server) => {
let server = ~server;
let mut stream = server.connect(client_ip);
chan.send(());
let mut buf = [0];
match stream.read(buf) {
Some(nread) => {
assert_eq!(nread, 1);
assert_eq!(buf[0], 99);
}
None => fail!()
}
}
None => fail!()
}
port2.recv();
})
iotest!(fn stream_smoke_test_ip6() {
let server_ip = next_test_ip6();
let client_ip = next_test_ip6();
let (port, chan) = Chan::new();
let (port2, chan2) = Chan::new();
do spawn {
match UdpSocket::bind(client_ip) {
Some(client) => {
let client = ~client;
let mut stream = client.connect(server_ip);
port.recv();
stream.write([99]);
}
None => fail!()
}
chan2.send(());
}
match UdpSocket::bind(server_ip) {
Some(server) => {
let server = ~server;
let mut stream = server.connect(client_ip);
chan.send(());
let mut buf = [0];
match stream.read(buf) {
Some(nread) => {
assert_eq!(nread, 1);
assert_eq!(buf[0], 99);
}
None => fail!()
}
}
None => fail!()
}
port2.recv();
})
pub fn socket_name(addr: SocketAddr) {
let server = UdpSocket::bind(addr);
assert!(server.is_some());
let mut server = server.unwrap();
// Make sure socket_name gives
// us the socket we binded to.
let so_name = server.socket_name();
assert!(so_name.is_some());
assert_eq!(addr, so_name.unwrap());
}
iotest!(fn socket_name_ip4() {
socket_name(next_test_ip4());
})
iotest!(fn socket_name_ip6() {
socket_name(next_test_ip6());
})
}
|
