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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 io::prelude::*;
use fmt;
use io;
use net::{ToSocketAddrs, SocketAddr, Shutdown};
use sys_common::net as net_imp;
use sys_common::{AsInner, FromInner, IntoInner};
use time::Duration;
/// A structure which represents a TCP stream between a local socket and a
/// remote socket.
///
/// The socket will be closed when the value is dropped.
///
/// # Examples
///
/// ```no_run
/// use std::io::prelude::*;
/// use std::net::TcpStream;
///
/// {
/// let mut stream = TcpStream::connect("127.0.0.1:34254").unwrap();
///
/// // ignore the Result
/// let _ = stream.write(&[1]);
/// let _ = stream.read(&mut [0; 128]); // ignore here too
/// } // the stream is closed here
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub struct TcpStream(net_imp::TcpStream);
/// A structure representing a socket server.
///
/// # Examples
///
/// ```no_run
/// use std::net::{TcpListener, TcpStream};
///
/// let listener = TcpListener::bind("127.0.0.1:80").unwrap();
///
/// fn handle_client(stream: TcpStream) {
/// // ...
/// }
///
/// // accept connections and process them, spawning a new thread for each one
/// for stream in listener.incoming() {
/// match stream {
/// Ok(stream) => {
/// handle_client(stream);
/// }
/// Err(e) => { /* connection failed */ }
/// }
/// }
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub struct TcpListener(net_imp::TcpListener);
/// An infinite iterator over the connections from a `TcpListener`.
///
/// This iterator will infinitely yield `Some` of the accepted connections. It
/// is equivalent to calling `accept` in a loop.
///
/// This `struct` is created by the [`incoming`] method on [`TcpListener`].
///
/// [`incoming`]: struct.TcpListener.html#method.incoming
/// [`TcpListener`]: struct.TcpListener.html
#[stable(feature = "rust1", since = "1.0.0")]
pub struct Incoming<'a> { listener: &'a TcpListener }
impl TcpStream {
/// Opens a TCP connection to a remote host.
///
/// `addr` is an address of the remote host. Anything which implements
/// `ToSocketAddrs` trait can be supplied for the address; see this trait
/// documentation for concrete examples.
/// In case `ToSocketAddrs::to_socket_addrs()` returns more than one entry,
/// then the first valid and reachable address is used.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn connect<A: ToSocketAddrs>(addr: A) -> io::Result<TcpStream> {
super::each_addr(addr, net_imp::TcpStream::connect).map(TcpStream)
}
/// Returns the socket address of the remote peer of this TCP connection.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn peer_addr(&self) -> io::Result<SocketAddr> {
self.0.peer_addr()
}
/// Returns the socket address of the local half of this TCP connection.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn local_addr(&self) -> io::Result<SocketAddr> {
self.0.socket_addr()
}
/// Shuts down the read, write, or both halves of this connection.
///
/// This function will cause all pending and future I/O on the specified
/// portions to return immediately with an appropriate value (see the
/// documentation of `Shutdown`).
#[stable(feature = "rust1", since = "1.0.0")]
pub fn shutdown(&self, how: Shutdown) -> io::Result<()> {
self.0.shutdown(how)
}
/// Creates a new independently owned handle to the underlying socket.
///
/// The returned `TcpStream` is a reference to the same stream that this
/// object references. Both handles will read and write the same stream of
/// data, and options set on one stream will be propagated to the other
/// stream.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn try_clone(&self) -> io::Result<TcpStream> {
self.0.duplicate().map(TcpStream)
}
/// Sets the read timeout to the timeout specified.
///
/// If the value specified is `None`, then `read` calls will block
/// indefinitely. It is an error to pass the zero `Duration` to this
/// method.
///
/// # Note
///
/// Platforms may return a different error code whenever a read times out as
/// a result of setting this option. For example Unix typically returns an
/// error of the kind `WouldBlock`, but Windows may return `TimedOut`.
#[stable(feature = "socket_timeout", since = "1.4.0")]
pub fn set_read_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
self.0.set_read_timeout(dur)
}
/// Sets the write timeout to the timeout specified.
///
/// If the value specified is `None`, then `write` calls will block
/// indefinitely. It is an error to pass the zero `Duration` to this
/// method.
///
/// # Note
///
/// Platforms may return a different error code whenever a write times out
/// as a result of setting this option. For example Unix typically returns
/// an error of the kind `WouldBlock`, but Windows may return `TimedOut`.
#[stable(feature = "socket_timeout", since = "1.4.0")]
pub fn set_write_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
self.0.set_write_timeout(dur)
}
/// Returns the read timeout of this socket.
///
/// If the timeout is `None`, then `read` calls will block indefinitely.
///
/// # Note
///
/// Some platforms do not provide access to the current timeout.
#[stable(feature = "socket_timeout", since = "1.4.0")]
pub fn read_timeout(&self) -> io::Result<Option<Duration>> {
self.0.read_timeout()
}
/// Returns the write timeout of this socket.
///
/// If the timeout is `None`, then `write` calls will block indefinitely.
///
/// # Note
///
/// Some platforms do not provide access to the current timeout.
#[stable(feature = "socket_timeout", since = "1.4.0")]
pub fn write_timeout(&self) -> io::Result<Option<Duration>> {
self.0.write_timeout()
}
/// Sets the value of the `TCP_NODELAY` option on this socket.
///
/// If set, this option disables the Nagle algorithm. This means that
/// segments are always sent as soon as possible, even if there is only a
/// small amount of data. When not set, data is buffered until there is a
/// sufficient amount to send out, thereby avoiding the frequent sending of
/// small packets.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn set_nodelay(&self, nodelay: bool) -> io::Result<()> {
self.0.set_nodelay(nodelay)
}
/// Gets the value of the `TCP_NODELAY` option on this socket.
///
/// For more information about this option, see [`set_nodelay`][link].
///
/// [link]: #method.set_nodelay
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn nodelay(&self) -> io::Result<bool> {
self.0.nodelay()
}
/// Sets the value for the `IP_TTL` option on this socket.
///
/// This value sets the time-to-live field that is used in every packet sent
/// from this socket.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn set_ttl(&self, ttl: u32) -> io::Result<()> {
self.0.set_ttl(ttl)
}
/// Gets the value of the `IP_TTL` option for this socket.
///
/// For more information about this option, see [`set_ttl`][link].
///
/// [link]: #method.set_ttl
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn ttl(&self) -> io::Result<u32> {
self.0.ttl()
}
/// Get the value of the `SO_ERROR` option on this socket.
///
/// This will retrieve the stored error in the underlying socket, clearing
/// the field in the process. This can be useful for checking errors between
/// calls.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn take_error(&self) -> io::Result<Option<io::Error>> {
self.0.take_error()
}
/// Moves this TCP stream into or out of nonblocking mode.
///
/// On Unix this corresponds to calling fcntl, and on Windows this
/// corresponds to calling ioctlsocket.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> {
self.0.set_nonblocking(nonblocking)
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl Read for TcpStream {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { self.0.read(buf) }
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
self.0.read_to_end(buf)
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl Write for TcpStream {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> { self.0.write(buf) }
fn flush(&mut self) -> io::Result<()> { Ok(()) }
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a> Read for &'a TcpStream {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { self.0.read(buf) }
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
self.0.read_to_end(buf)
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a> Write for &'a TcpStream {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> { self.0.write(buf) }
fn flush(&mut self) -> io::Result<()> { Ok(()) }
}
impl AsInner<net_imp::TcpStream> for TcpStream {
fn as_inner(&self) -> &net_imp::TcpStream { &self.0 }
}
impl FromInner<net_imp::TcpStream> for TcpStream {
fn from_inner(inner: net_imp::TcpStream) -> TcpStream { TcpStream(inner) }
}
impl IntoInner<net_imp::TcpStream> for TcpStream {
fn into_inner(self) -> net_imp::TcpStream { self.0 }
}
#[stable(feature = "rust1", since = "1.0.0")]
impl fmt::Debug for TcpStream {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
impl TcpListener {
/// Creates a new `TcpListener` which will be bound to the specified
/// address.
///
/// The returned listener is ready for accepting connections.
///
/// Binding with a port number of 0 will request that the OS assigns a port
/// to this listener. The port allocated can be queried via the
/// `local_addr` method.
///
/// The address type can be any implementor of `ToSocketAddrs` trait. See
/// its documentation for concrete examples.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn bind<A: ToSocketAddrs>(addr: A) -> io::Result<TcpListener> {
super::each_addr(addr, net_imp::TcpListener::bind).map(TcpListener)
}
/// Returns the local socket address of this listener.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn local_addr(&self) -> io::Result<SocketAddr> {
self.0.socket_addr()
}
/// Creates a new independently owned handle to the underlying socket.
///
/// The returned `TcpListener` is a reference to the same socket that this
/// object references. Both handles can be used to accept incoming
/// connections and options set on one listener will affect the other.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn try_clone(&self) -> io::Result<TcpListener> {
self.0.duplicate().map(TcpListener)
}
/// Accept a new incoming connection from this listener.
///
/// This function will block the calling thread until a new TCP connection
/// is established. When established, the corresponding `TcpStream` and the
/// remote peer's address will be returned.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn accept(&self) -> io::Result<(TcpStream, SocketAddr)> {
self.0.accept().map(|(a, b)| (TcpStream(a), b))
}
/// Returns an iterator over the connections being received on this
/// listener.
///
/// The returned iterator will never return `None` and will also not yield
/// the peer's `SocketAddr` structure.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn incoming(&self) -> Incoming {
Incoming { listener: self }
}
/// Sets the value for the `IP_TTL` option on this socket.
///
/// This value sets the time-to-live field that is used in every packet sent
/// from this socket.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn set_ttl(&self, ttl: u32) -> io::Result<()> {
self.0.set_ttl(ttl)
}
/// Gets the value of the `IP_TTL` option for this socket.
///
/// For more information about this option, see [`set_ttl`][link].
///
/// [link]: #method.set_ttl
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn ttl(&self) -> io::Result<u32> {
self.0.ttl()
}
/// Sets the value for the `IPV6_V6ONLY` option on this socket.
///
/// If this is set to `true` then the socket is restricted to sending and
/// receiving IPv6 packets only. In this case two IPv4 and IPv6 applications
/// can bind the same port at the same time.
///
/// If this is set to `false` then the socket can be used to send and
/// receive packets from an IPv4-mapped IPv6 address.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn set_only_v6(&self, only_v6: bool) -> io::Result<()> {
self.0.set_only_v6(only_v6)
}
/// Gets the value of the `IPV6_V6ONLY` option for this socket.
///
/// For more information about this option, see [`set_only_v6`][link].
///
/// [link]: #method.set_only_v6
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn only_v6(&self) -> io::Result<bool> {
self.0.only_v6()
}
/// Get the value of the `SO_ERROR` option on this socket.
///
/// This will retrieve the stored error in the underlying socket, clearing
/// the field in the process. This can be useful for checking errors between
/// calls.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn take_error(&self) -> io::Result<Option<io::Error>> {
self.0.take_error()
}
/// Moves this TCP stream into or out of nonblocking mode.
///
/// On Unix this corresponds to calling fcntl, and on Windows this
/// corresponds to calling ioctlsocket.
#[stable(feature = "net2_mutators", since = "1.9.0")]
pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> {
self.0.set_nonblocking(nonblocking)
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a> Iterator for Incoming<'a> {
type Item = io::Result<TcpStream>;
fn next(&mut self) -> Option<io::Result<TcpStream>> {
Some(self.listener.accept().map(|p| p.0))
}
}
impl AsInner<net_imp::TcpListener> for TcpListener {
fn as_inner(&self) -> &net_imp::TcpListener { &self.0 }
}
impl FromInner<net_imp::TcpListener> for TcpListener {
fn from_inner(inner: net_imp::TcpListener) -> TcpListener {
TcpListener(inner)
}
}
impl IntoInner<net_imp::TcpListener> for TcpListener {
fn into_inner(self) -> net_imp::TcpListener { self.0 }
}
#[stable(feature = "rust1", since = "1.0.0")]
impl fmt::Debug for TcpListener {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
#[cfg(all(test, not(target_os = "emscripten")))]
mod tests {
use io::ErrorKind;
use io::prelude::*;
use net::*;
use net::test::{next_test_ip4, next_test_ip6};
use sync::mpsc::channel;
use sys_common::AsInner;
use time::{Instant, Duration};
use thread;
fn each_ip(f: &mut FnMut(SocketAddr)) {
f(next_test_ip4());
f(next_test_ip6());
}
macro_rules! t {
($e:expr) => {
match $e {
Ok(t) => t,
Err(e) => panic!("received error for `{}`: {}", stringify!($e), e),
}
}
}
#[test]
fn bind_error() {
match TcpListener::bind("1.1.1.1:9999") {
Ok(..) => panic!(),
Err(e) =>
assert_eq!(e.kind(), ErrorKind::AddrNotAvailable),
}
}
#[test]
fn connect_error() {
match TcpStream::connect("0.0.0.0:1") {
Ok(..) => panic!(),
Err(e) => assert!(e.kind() == ErrorKind::ConnectionRefused ||
e.kind() == ErrorKind::InvalidInput ||
e.kind() == ErrorKind::AddrInUse ||
e.kind() == ErrorKind::AddrNotAvailable,
"bad error: {} {:?}", e, e.kind()),
}
}
#[test]
fn listen_localhost() {
let socket_addr = next_test_ip4();
let listener = t!(TcpListener::bind(&socket_addr));
let _t = thread::spawn(move || {
let mut stream = t!(TcpStream::connect(&("localhost",
socket_addr.port())));
t!(stream.write(&[144]));
});
let mut stream = t!(listener.accept()).0;
let mut buf = [0];
t!(stream.read(&mut buf));
assert!(buf[0] == 144);
}
#[test]
fn connect_loopback() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
let host = match addr {
SocketAddr::V4(..) => "127.0.0.1",
SocketAddr::V6(..) => "::1",
};
let mut stream = t!(TcpStream::connect(&(host, addr.port())));
t!(stream.write(&[66]));
});
let mut stream = t!(acceptor.accept()).0;
let mut buf = [0];
t!(stream.read(&mut buf));
assert!(buf[0] == 66);
})
}
#[test]
fn smoke_test() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let (tx, rx) = channel();
let _t = thread::spawn(move|| {
let mut stream = t!(TcpStream::connect(&addr));
t!(stream.write(&[99]));
tx.send(t!(stream.local_addr())).unwrap();
});
let (mut stream, addr) = t!(acceptor.accept());
let mut buf = [0];
t!(stream.read(&mut buf));
assert!(buf[0] == 99);
assert_eq!(addr, t!(rx.recv()));
})
}
#[test]
fn read_eof() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
let _stream = t!(TcpStream::connect(&addr));
// Close
});
let mut stream = t!(acceptor.accept()).0;
let mut buf = [0];
let nread = t!(stream.read(&mut buf));
assert_eq!(nread, 0);
let nread = t!(stream.read(&mut buf));
assert_eq!(nread, 0);
})
}
#[test]
fn write_close() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let (tx, rx) = channel();
let _t = thread::spawn(move|| {
drop(t!(TcpStream::connect(&addr)));
tx.send(()).unwrap();
});
let mut stream = t!(acceptor.accept()).0;
rx.recv().unwrap();
let buf = [0];
match stream.write(&buf) {
Ok(..) => {}
Err(e) => {
assert!(e.kind() == ErrorKind::ConnectionReset ||
e.kind() == ErrorKind::BrokenPipe ||
e.kind() == ErrorKind::ConnectionAborted,
"unknown error: {}", e);
}
}
})
}
#[test]
fn multiple_connect_serial() {
each_ip(&mut |addr| {
let max = 10;
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
for _ in 0..max {
let mut stream = t!(TcpStream::connect(&addr));
t!(stream.write(&[99]));
}
});
for stream in acceptor.incoming().take(max) {
let mut stream = t!(stream);
let mut buf = [0];
t!(stream.read(&mut buf));
assert_eq!(buf[0], 99);
}
})
}
#[test]
fn multiple_connect_interleaved_greedy_schedule() {
const MAX: usize = 10;
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
let acceptor = acceptor;
for (i, stream) in acceptor.incoming().enumerate().take(MAX) {
// Start another thread to handle the connection
let _t = thread::spawn(move|| {
let mut stream = t!(stream);
let mut buf = [0];
t!(stream.read(&mut buf));
assert!(buf[0] == i as u8);
});
}
});
connect(0, addr);
});
fn connect(i: usize, addr: SocketAddr) {
if i == MAX { return }
let t = thread::spawn(move|| {
let mut stream = t!(TcpStream::connect(&addr));
// Connect again before writing
connect(i + 1, addr);
t!(stream.write(&[i as u8]));
});
t.join().ok().unwrap();
}
}
#[test]
fn multiple_connect_interleaved_lazy_schedule() {
const MAX: usize = 10;
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
for stream in acceptor.incoming().take(MAX) {
// Start another thread to handle the connection
let _t = thread::spawn(move|| {
let mut stream = t!(stream);
let mut buf = [0];
t!(stream.read(&mut buf));
assert!(buf[0] == 99);
});
}
});
connect(0, addr);
});
fn connect(i: usize, addr: SocketAddr) {
if i == MAX { return }
let t = thread::spawn(move|| {
let mut stream = t!(TcpStream::connect(&addr));
connect(i + 1, addr);
t!(stream.write(&[99]));
});
t.join().ok().unwrap();
}
}
#[test]
fn socket_and_peer_name() {
each_ip(&mut |addr| {
let listener = t!(TcpListener::bind(&addr));
let so_name = t!(listener.local_addr());
assert_eq!(addr, so_name);
let _t = thread::spawn(move|| {
t!(listener.accept());
});
let stream = t!(TcpStream::connect(&addr));
assert_eq!(addr, t!(stream.peer_addr()));
})
}
#[test]
fn partial_read() {
each_ip(&mut |addr| {
let (tx, rx) = channel();
let srv = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
let mut cl = t!(srv.accept()).0;
cl.write(&[10]).unwrap();
let mut b = [0];
t!(cl.read(&mut b));
tx.send(()).unwrap();
});
let mut c = t!(TcpStream::connect(&addr));
let mut b = [0; 10];
assert_eq!(c.read(&mut b).unwrap(), 1);
t!(c.write(&[1]));
rx.recv().unwrap();
})
}
#[test]
fn double_bind() {
each_ip(&mut |addr| {
let _listener = t!(TcpListener::bind(&addr));
match TcpListener::bind(&addr) {
Ok(..) => panic!(),
Err(e) => {
assert!(e.kind() == ErrorKind::ConnectionRefused ||
e.kind() == ErrorKind::Other ||
e.kind() == ErrorKind::AddrInUse,
"unknown error: {} {:?}", e, e.kind());
}
}
})
}
#[test]
fn fast_rebind() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
t!(TcpStream::connect(&addr));
});
t!(acceptor.accept());
drop(acceptor);
t!(TcpListener::bind(&addr));
});
}
#[test]
fn tcp_clone_smoke() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
let mut s = t!(TcpStream::connect(&addr));
let mut buf = [0, 0];
assert_eq!(s.read(&mut buf).unwrap(), 1);
assert_eq!(buf[0], 1);
t!(s.write(&[2]));
});
let mut s1 = t!(acceptor.accept()).0;
let s2 = t!(s1.try_clone());
let (tx1, rx1) = channel();
let (tx2, rx2) = channel();
let _t = thread::spawn(move|| {
let mut s2 = s2;
rx1.recv().unwrap();
t!(s2.write(&[1]));
tx2.send(()).unwrap();
});
tx1.send(()).unwrap();
let mut buf = [0, 0];
assert_eq!(s1.read(&mut buf).unwrap(), 1);
rx2.recv().unwrap();
})
}
#[test]
fn tcp_clone_two_read() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let (tx1, rx) = channel();
let tx2 = tx1.clone();
let _t = thread::spawn(move|| {
let mut s = t!(TcpStream::connect(&addr));
t!(s.write(&[1]));
rx.recv().unwrap();
t!(s.write(&[2]));
rx.recv().unwrap();
});
let mut s1 = t!(acceptor.accept()).0;
let s2 = t!(s1.try_clone());
let (done, rx) = channel();
let _t = thread::spawn(move|| {
let mut s2 = s2;
let mut buf = [0, 0];
t!(s2.read(&mut buf));
tx2.send(()).unwrap();
done.send(()).unwrap();
});
let mut buf = [0, 0];
t!(s1.read(&mut buf));
tx1.send(()).unwrap();
rx.recv().unwrap();
})
}
#[test]
fn tcp_clone_two_write() {
each_ip(&mut |addr| {
let acceptor = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
let mut s = t!(TcpStream::connect(&addr));
let mut buf = [0, 1];
t!(s.read(&mut buf));
t!(s.read(&mut buf));
});
let mut s1 = t!(acceptor.accept()).0;
let s2 = t!(s1.try_clone());
let (done, rx) = channel();
let _t = thread::spawn(move|| {
let mut s2 = s2;
t!(s2.write(&[1]));
done.send(()).unwrap();
});
t!(s1.write(&[2]));
rx.recv().unwrap();
})
}
#[test]
fn shutdown_smoke() {
each_ip(&mut |addr| {
let a = t!(TcpListener::bind(&addr));
let _t = thread::spawn(move|| {
let mut c = t!(a.accept()).0;
let mut b = [0];
assert_eq!(c.read(&mut b).unwrap(), 0);
t!(c.write(&[1]));
});
let mut s = t!(TcpStream::connect(&addr));
t!(s.shutdown(Shutdown::Write));
assert!(s.write(&[1]).is_err());
let mut b = [0, 0];
assert_eq!(t!(s.read(&mut b)), 1);
assert_eq!(b[0], 1);
})
}
#[test]
fn close_readwrite_smoke() {
each_ip(&mut |addr| {
let a = t!(TcpListener::bind(&addr));
let (tx, rx) = channel::<()>();
let _t = thread::spawn(move|| {
let _s = t!(a.accept());
let _ = rx.recv();
});
let mut b = [0];
let mut s = t!(TcpStream::connect(&addr));
let mut s2 = t!(s.try_clone());
// closing should prevent reads/writes
t!(s.shutdown(Shutdown::Write));
assert!(s.write(&[0]).is_err());
t!(s.shutdown(Shutdown::Read));
assert_eq!(s.read(&mut b).unwrap(), 0);
// closing should affect previous handles
assert!(s2.write(&[0]).is_err());
assert_eq!(s2.read(&mut b).unwrap(), 0);
// closing should affect new handles
let mut s3 = t!(s.try_clone());
assert!(s3.write(&[0]).is_err());
assert_eq!(s3.read(&mut b).unwrap(), 0);
// make sure these don't die
let _ = s2.shutdown(Shutdown::Read);
let _ = s2.shutdown(Shutdown::Write);
let _ = s3.shutdown(Shutdown::Read);
let _ = s3.shutdown(Shutdown::Write);
drop(tx);
})
}
#[test]
fn close_read_wakes_up() {
each_ip(&mut |addr| {
let a = t!(TcpListener::bind(&addr));
let (tx1, rx) = channel::<()>();
let _t = thread::spawn(move|| {
let _s = t!(a.accept());
let _ = rx.recv();
});
let s = t!(TcpStream::connect(&addr));
let s2 = t!(s.try_clone());
let (tx, rx) = channel();
let _t = thread::spawn(move|| {
let mut s2 = s2;
assert_eq!(t!(s2.read(&mut [0])), 0);
tx.send(()).unwrap();
});
// this should wake up the child thread
t!(s.shutdown(Shutdown::Read));
// this test will never finish if the child doesn't wake up
rx.recv().unwrap();
drop(tx1);
})
}
#[test]
fn clone_while_reading() {
each_ip(&mut |addr| {
let accept = t!(TcpListener::bind(&addr));
// Enqueue a thread to write to a socket
let (tx, rx) = channel();
let (txdone, rxdone) = channel();
let txdone2 = txdone.clone();
let _t = thread::spawn(move|| {
let mut tcp = t!(TcpStream::connect(&addr));
rx.recv().unwrap();
t!(tcp.write(&[0]));
txdone2.send(()).unwrap();
});
// Spawn off a reading clone
let tcp = t!(accept.accept()).0;
let tcp2 = t!(tcp.try_clone());
let txdone3 = txdone.clone();
let _t = thread::spawn(move|| {
let mut tcp2 = tcp2;
t!(tcp2.read(&mut [0]));
txdone3.send(()).unwrap();
});
// Try to ensure that the reading clone is indeed reading
for _ in 0..50 {
thread::yield_now();
}
// clone the handle again while it's reading, then let it finish the
// read.
let _ = t!(tcp.try_clone());
tx.send(()).unwrap();
rxdone.recv().unwrap();
rxdone.recv().unwrap();
})
}
#[test]
fn clone_accept_smoke() {
each_ip(&mut |addr| {
let a = t!(TcpListener::bind(&addr));
let a2 = t!(a.try_clone());
let _t = thread::spawn(move|| {
let _ = TcpStream::connect(&addr);
});
let _t = thread::spawn(move|| {
let _ = TcpStream::connect(&addr);
});
t!(a.accept());
t!(a2.accept());
})
}
#[test]
fn clone_accept_concurrent() {
each_ip(&mut |addr| {
let a = t!(TcpListener::bind(&addr));
let a2 = t!(a.try_clone());
let (tx, rx) = channel();
let tx2 = tx.clone();
let _t = thread::spawn(move|| {
tx.send(t!(a.accept())).unwrap();
});
let _t = thread::spawn(move|| {
tx2.send(t!(a2.accept())).unwrap();
});
let _t = thread::spawn(move|| {
let _ = TcpStream::connect(&addr);
});
let _t = thread::spawn(move|| {
let _ = TcpStream::connect(&addr);
});
rx.recv().unwrap();
rx.recv().unwrap();
})
}
#[test]
fn debug() {
let name = if cfg!(windows) {"socket"} else {"fd"};
let socket_addr = next_test_ip4();
let listener = t!(TcpListener::bind(&socket_addr));
let listener_inner = listener.0.socket().as_inner();
let compare = format!("TcpListener {{ addr: {:?}, {}: {:?} }}",
socket_addr, name, listener_inner);
assert_eq!(format!("{:?}", listener), compare);
let stream = t!(TcpStream::connect(&("localhost",
socket_addr.port())));
let stream_inner = stream.0.socket().as_inner();
let compare = format!("TcpStream {{ addr: {:?}, \
peer: {:?}, {}: {:?} }}",
stream.local_addr().unwrap(),
stream.peer_addr().unwrap(),
name,
stream_inner);
assert_eq!(format!("{:?}", stream), compare);
}
// FIXME: re-enabled bitrig/openbsd tests once their socket timeout code
// no longer has rounding errors.
#[cfg_attr(any(target_os = "bitrig", target_os = "netbsd", target_os = "openbsd"), ignore)]
#[test]
fn timeouts() {
let addr = next_test_ip4();
let listener = t!(TcpListener::bind(&addr));
let stream = t!(TcpStream::connect(&("localhost", addr.port())));
let dur = Duration::new(15410, 0);
assert_eq!(None, t!(stream.read_timeout()));
t!(stream.set_read_timeout(Some(dur)));
assert_eq!(Some(dur), t!(stream.read_timeout()));
assert_eq!(None, t!(stream.write_timeout()));
t!(stream.set_write_timeout(Some(dur)));
assert_eq!(Some(dur), t!(stream.write_timeout()));
t!(stream.set_read_timeout(None));
assert_eq!(None, t!(stream.read_timeout()));
t!(stream.set_write_timeout(None));
assert_eq!(None, t!(stream.write_timeout()));
drop(listener);
}
#[test]
fn test_read_timeout() {
let addr = next_test_ip4();
let listener = t!(TcpListener::bind(&addr));
let mut stream = t!(TcpStream::connect(&("localhost", addr.port())));
t!(stream.set_read_timeout(Some(Duration::from_millis(1000))));
let mut buf = [0; 10];
let start = Instant::now();
let kind = stream.read(&mut buf).err().expect("expected error").kind();
assert!(kind == ErrorKind::WouldBlock || kind == ErrorKind::TimedOut);
assert!(start.elapsed() > Duration::from_millis(400));
drop(listener);
}
#[test]
fn test_read_with_timeout() {
let addr = next_test_ip4();
let listener = t!(TcpListener::bind(&addr));
let mut stream = t!(TcpStream::connect(&("localhost", addr.port())));
t!(stream.set_read_timeout(Some(Duration::from_millis(1000))));
let mut other_end = t!(listener.accept()).0;
t!(other_end.write_all(b"hello world"));
let mut buf = [0; 11];
t!(stream.read(&mut buf));
assert_eq!(b"hello world", &buf[..]);
let start = Instant::now();
let kind = stream.read(&mut buf).err().expect("expected error").kind();
assert!(kind == ErrorKind::WouldBlock || kind == ErrorKind::TimedOut);
assert!(start.elapsed() > Duration::from_millis(400));
drop(listener);
}
#[test]
fn nodelay() {
let addr = next_test_ip4();
let _listener = t!(TcpListener::bind(&addr));
let stream = t!(TcpStream::connect(&("localhost", addr.port())));
assert_eq!(false, t!(stream.nodelay()));
t!(stream.set_nodelay(true));
assert_eq!(true, t!(stream.nodelay()));
t!(stream.set_nodelay(false));
assert_eq!(false, t!(stream.nodelay()));
}
#[test]
fn ttl() {
let ttl = 100;
let addr = next_test_ip4();
let listener = t!(TcpListener::bind(&addr));
t!(listener.set_ttl(ttl));
assert_eq!(ttl, t!(listener.ttl()));
let stream = t!(TcpStream::connect(&("localhost", addr.port())));
t!(stream.set_ttl(ttl));
assert_eq!(ttl, t!(stream.ttl()));
}
#[test]
fn set_nonblocking() {
let addr = next_test_ip4();
let listener = t!(TcpListener::bind(&addr));
t!(listener.set_nonblocking(true));
t!(listener.set_nonblocking(false));
let mut stream = t!(TcpStream::connect(&("localhost", addr.port())));
t!(stream.set_nonblocking(false));
t!(stream.set_nonblocking(true));
let mut buf = [0];
match stream.read(&mut buf) {
Ok(_) => panic!("expected error"),
Err(ref e) if e.kind() == ErrorKind::WouldBlock => {}
Err(e) => panic!("unexpected error {}", e),
}
}
}
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