1 files changed, 89 insertions, 0 deletions
diff --git a/third_party/rust/net2/src/udp.rs b/third_party/rust/net2/src/udp.rs
new file mode 100644
index 0000000000..d061ab5c6f
--- /dev/null
+++ b/third_party/rust/net2/src/udp.rs
@@ -0,0 +1,89 @@
+// 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 std::cell::RefCell;
+use std::fmt;
+use std::io;
+use std::net::{ToSocketAddrs, UdpSocket};
+
+use IntoInner;
+use socket::Socket;
+use sys::c;
+
+/// An "in progress" UDP socket which has not yet been connected.
+///
+/// Allows configuration of a socket before the socket is connected.
+pub struct UdpBuilder {
+    socket: RefCell<Option<Socket>>,
+}
+
+impl UdpBuilder {
+    /// Constructs a new UdpBuilder with the `AF_INET` domain, the `SOCK_DGRAM`
+    /// type, and with a protocol argument of 0.
+    ///
+    /// Note that passing other kinds of flags or arguments can be done through
+    /// the `FromRaw{Fd,Socket}` implementation.
+    pub fn new_v4() -> io::Result<UdpBuilder> {
+        Socket::new(c::AF_INET, c::SOCK_DGRAM).map(::FromInner::from_inner)
+    }
+
+    /// Constructs a new UdpBuilder with the `AF_INET6` domain, the `SOCK_DGRAM`
+    /// type, and with a protocol argument of 0.
+    ///
+    /// Note that passing other kinds of flags or arguments can be done through
+    /// the `FromRaw{Fd,Socket}` implementation.
+    pub fn new_v6() -> io::Result<UdpBuilder> {
+        Socket::new(c::AF_INET6, c::SOCK_DGRAM).map(::FromInner::from_inner)
+    }
+
+    /// Binds this socket to the specified address.
+    ///
+    /// This function directly corresponds to the bind(2) function on Windows
+    /// and Unix.
+    pub fn bind<T>(&self, addr: T) -> io::Result<UdpSocket>
+        where T: ToSocketAddrs
+    {
+        try!(self.with_socket(|sock| {
+            let addr = try!(::one_addr(addr));
+            sock.bind(&addr)
+        }));
+        Ok(self.socket.borrow_mut().take().unwrap().into_inner().into_udp_socket())
+    }
+
+    fn with_socket<F>(&self, f: F) -> io::Result<()>
+        where F: FnOnce(&Socket) -> io::Result<()>
+    {
+        match *self.socket.borrow() {
+            Some(ref s) => f(s),
+            None => Err(io::Error::new(io::ErrorKind::Other,
+                                       "builder has already finished its socket")),
+        }
+    }
+}
+
+impl fmt::Debug for UdpBuilder {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "UdpBuilder {{ socket: {:?} }}",
+               self.socket.borrow().as_ref().unwrap())
+    }
+}
+
+impl ::AsInner for UdpBuilder {
+    type Inner = RefCell<Option<Socket>>;
+    fn as_inner(&self) -> &RefCell<Option<Socket>> { &self.socket }
+}
+
+impl ::FromInner for UdpBuilder {
+    type Inner = Socket;
+    fn from_inner(sock: Socket) -> UdpBuilder {
+        UdpBuilder { socket: RefCell::new(Some(sock)) }
+    }
+}
+