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-rw-r--r--src/librustuv/net.rs851
1 files changed, 851 insertions, 0 deletions
diff --git a/src/librustuv/net.rs b/src/librustuv/net.rs
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+++ b/src/librustuv/net.rs
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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 std::libc::{size_t, ssize_t, c_int, c_void, c_uint};
+use std::vec;
+use std::str;
+use std::rt::io::net::ip::{SocketAddr, Ipv4Addr, Ipv6Addr};
+
+use uvll;
+use uvll::*;
+use super::{AllocCallback, ConnectionCallback, ReadCallback, UdpReceiveCallback,
+            UdpSendCallback, Loop, Watcher, Request, UvError, Buf, NativeHandle,
+            status_to_maybe_uv_error, empty_buf};
+
+pub struct UvAddrInfo(*uvll::addrinfo);
+
+pub enum UvSocketAddr {
+    UvIpv4SocketAddr(*sockaddr_in),
+    UvIpv6SocketAddr(*sockaddr_in6),
+}
+
+pub fn sockaddr_to_UvSocketAddr(addr: *uvll::sockaddr) -> UvSocketAddr {
+    unsafe {
+        assert!((is_ip4_addr(addr) || is_ip6_addr(addr)));
+        assert!(!(is_ip4_addr(addr) && is_ip6_addr(addr)));
+        match addr {
+            _ if is_ip4_addr(addr) => UvIpv4SocketAddr(addr as *uvll::sockaddr_in),
+            _ if is_ip6_addr(addr) => UvIpv6SocketAddr(addr as *uvll::sockaddr_in6),
+            _ => fail!(),
+        }
+    }
+}
+
+fn socket_addr_as_uv_socket_addr<T>(addr: SocketAddr, f: &fn(UvSocketAddr) -> T) -> T {
+    let malloc = match addr.ip {
+        Ipv4Addr(*) => malloc_ip4_addr,
+        Ipv6Addr(*) => malloc_ip6_addr,
+    };
+    let wrap = match addr.ip {
+        Ipv4Addr(*) => UvIpv4SocketAddr,
+        Ipv6Addr(*) => UvIpv6SocketAddr,
+    };
+    let free = match addr.ip {
+        Ipv4Addr(*) => free_ip4_addr,
+        Ipv6Addr(*) => free_ip6_addr,
+    };
+
+    let addr = unsafe { malloc(addr.ip.to_str(), addr.port as int) };
+    do (|| {
+        f(wrap(addr))
+    }).finally {
+        unsafe { free(addr) };
+    }
+}
+
+fn uv_socket_addr_as_socket_addr<T>(addr: UvSocketAddr, f: &fn(SocketAddr) -> T) -> T {
+    let ip_size = match addr {
+        UvIpv4SocketAddr(*) => 4/*groups of*/ * 3/*digits separated by*/ + 3/*periods*/,
+        UvIpv6SocketAddr(*) => 8/*groups of*/ * 4/*hex digits separated by*/ + 7 /*colons*/,
+    };
+    let ip_name = {
+        let buf = vec::from_elem(ip_size + 1 /*null terminated*/, 0u8);
+        unsafe {
+            let buf_ptr = vec::raw::to_ptr(buf);
+            match addr {
+                UvIpv4SocketAddr(addr) => uvll::ip4_name(addr, buf_ptr, ip_size as size_t),
+                UvIpv6SocketAddr(addr) => uvll::ip6_name(addr, buf_ptr, ip_size as size_t),
+            }
+        };
+        buf
+    };
+    let ip_port = unsafe {
+        let port = match addr {
+            UvIpv4SocketAddr(addr) => uvll::ip4_port(addr),
+            UvIpv6SocketAddr(addr) => uvll::ip6_port(addr),
+        };
+        port as u16
+    };
+    let ip_str = str::from_utf8_slice(ip_name).trim_right_chars(&'\x00');
+    let ip_addr = FromStr::from_str(ip_str).unwrap();
+
+    // finally run the closure
+    f(SocketAddr { ip: ip_addr, port: ip_port })
+}
+
+pub fn uv_socket_addr_to_socket_addr(addr: UvSocketAddr) -> SocketAddr {
+    use std::util;
+    uv_socket_addr_as_socket_addr(addr, util::id)
+}
+
+#[cfg(test)]
+#[test]
+fn test_ip4_conversion() {
+    use std::rt;
+    let ip4 = rt::test::next_test_ip4();
+    assert_eq!(ip4, socket_addr_as_uv_socket_addr(ip4, uv_socket_addr_to_socket_addr));
+}
+
+#[cfg(test)]
+#[test]
+fn test_ip6_conversion() {
+    use std::rt;
+    let ip6 = rt::test::next_test_ip6();
+    assert_eq!(ip6, socket_addr_as_uv_socket_addr(ip6, uv_socket_addr_to_socket_addr));
+}
+
+// uv_stream_t is the parent class of uv_tcp_t, uv_pipe_t, uv_tty_t
+// and uv_file_t
+pub struct StreamWatcher(*uvll::uv_stream_t);
+impl Watcher for StreamWatcher { }
+
+impl StreamWatcher {
+    pub fn read_start(&mut self, alloc: AllocCallback, cb: ReadCallback) {
+        unsafe {
+            match uvll::read_start(self.native_handle(), alloc_cb, read_cb) {
+                0 => {
+                    let data = self.get_watcher_data();
+                    data.alloc_cb = Some(alloc);
+                    data.read_cb = Some(cb);
+                }
+                n => {
+                    cb(*self, 0, empty_buf(), Some(UvError(n)))
+                }
+            }
+        }
+
+        extern fn alloc_cb(stream: *uvll::uv_stream_t, suggested_size: size_t) -> Buf {
+            let mut stream_watcher: StreamWatcher = NativeHandle::from_native_handle(stream);
+            let alloc_cb = stream_watcher.get_watcher_data().alloc_cb.get_ref();
+            return (*alloc_cb)(suggested_size as uint);
+        }
+
+        extern fn read_cb(stream: *uvll::uv_stream_t, nread: ssize_t, buf: Buf) {
+            uvdebug!("buf addr: {}", buf.base);
+            uvdebug!("buf len: {}", buf.len);
+            let mut stream_watcher: StreamWatcher = NativeHandle::from_native_handle(stream);
+            let cb = stream_watcher.get_watcher_data().read_cb.get_ref();
+            let status = status_to_maybe_uv_error(nread as c_int);
+            (*cb)(stream_watcher, nread as int, buf, status);
+        }
+    }
+
+    pub fn read_stop(&mut self) {
+        // It would be nice to drop the alloc and read callbacks here,
+        // but read_stop may be called from inside one of them and we
+        // would end up freeing the in-use environment
+        let handle = self.native_handle();
+        unsafe { assert_eq!(uvll::read_stop(handle), 0); }
+    }
+
+    pub fn write(&mut self, buf: Buf, cb: ConnectionCallback) {
+        let req = WriteRequest::new();
+        return unsafe {
+            match uvll::write(req.native_handle(), self.native_handle(),
+                              [buf], write_cb) {
+                0 => {
+                    let data = self.get_watcher_data();
+                    assert!(data.write_cb.is_none());
+                    data.write_cb = Some(cb);
+                }
+                n => {
+                    req.delete();
+                    cb(*self, Some(UvError(n)))
+                }
+            }
+        };
+
+        extern fn write_cb(req: *uvll::uv_write_t, status: c_int) {
+            let write_request: WriteRequest = NativeHandle::from_native_handle(req);
+            let mut stream_watcher = write_request.stream();
+            write_request.delete();
+            let cb = stream_watcher.get_watcher_data().write_cb.take_unwrap();
+            let status = status_to_maybe_uv_error(status);
+            cb(stream_watcher, status);
+        }
+    }
+
+
+    pub fn listen(&mut self, cb: ConnectionCallback) -> Result<(), UvError> {
+        {
+            let data = self.get_watcher_data();
+            assert!(data.connect_cb.is_none());
+            data.connect_cb = Some(cb);
+        }
+
+        return unsafe {
+            static BACKLOG: c_int = 128; // XXX should be configurable
+            match uvll::listen(self.native_handle(), BACKLOG, connection_cb) {
+                0 => Ok(()),
+                n => Err(UvError(n))
+            }
+        };
+
+        extern fn connection_cb(handle: *uvll::uv_stream_t, status: c_int) {
+            uvdebug!("connection_cb");
+            let mut stream_watcher: StreamWatcher = NativeHandle::from_native_handle(handle);
+            let cb = stream_watcher.get_watcher_data().connect_cb.get_ref();
+            let status = status_to_maybe_uv_error(status);
+            (*cb)(stream_watcher, status);
+        }
+    }
+
+    pub fn accept(&mut self, stream: StreamWatcher) {
+        let self_handle = self.native_handle() as *c_void;
+        let stream_handle = stream.native_handle() as *c_void;
+        assert_eq!(0, unsafe { uvll::accept(self_handle, stream_handle) } );
+    }
+}
+
+impl NativeHandle<*uvll::uv_stream_t> for StreamWatcher {
+    fn from_native_handle(handle: *uvll::uv_stream_t) -> StreamWatcher {
+        StreamWatcher(handle)
+    }
+    fn native_handle(&self) -> *uvll::uv_stream_t {
+        match self { &StreamWatcher(ptr) => ptr }
+    }
+}
+
+pub struct TcpWatcher(*uvll::uv_tcp_t);
+impl Watcher for TcpWatcher { }
+
+impl TcpWatcher {
+    pub fn new(loop_: &Loop) -> TcpWatcher {
+        unsafe {
+            let handle = malloc_handle(UV_TCP);
+            assert!(handle.is_not_null());
+            assert_eq!(0, uvll::tcp_init(loop_.native_handle(), handle));
+            let mut watcher: TcpWatcher = NativeHandle::from_native_handle(handle);
+            watcher.install_watcher_data();
+            return watcher;
+        }
+    }
+
+    pub fn bind(&mut self, address: SocketAddr) -> Result<(), UvError> {
+        do socket_addr_as_uv_socket_addr(address) |addr| {
+            let result = unsafe {
+                match addr {
+                    UvIpv4SocketAddr(addr) => uvll::tcp_bind(self.native_handle(), addr),
+                    UvIpv6SocketAddr(addr) => uvll::tcp_bind6(self.native_handle(), addr),
+                }
+            };
+            match result {
+                0 => Ok(()),
+                _ => Err(UvError(result)),
+            }
+        }
+    }
+
+    pub fn connect(&mut self, address: SocketAddr, cb: ConnectionCallback) {
+        unsafe {
+            assert!(self.get_watcher_data().connect_cb.is_none());
+            self.get_watcher_data().connect_cb = Some(cb);
+
+            let connect_handle = ConnectRequest::new().native_handle();
+            uvdebug!("connect_t: {}", connect_handle);
+            do socket_addr_as_uv_socket_addr(address) |addr| {
+                let result = match addr {
+                    UvIpv4SocketAddr(addr) => uvll::tcp_connect(connect_handle,
+                                                      self.native_handle(), addr, connect_cb),
+                    UvIpv6SocketAddr(addr) => uvll::tcp_connect6(connect_handle,
+                                                       self.native_handle(), addr, connect_cb),
+                };
+                assert_eq!(0, result);
+            }
+
+            extern fn connect_cb(req: *uvll::uv_connect_t, status: c_int) {
+                uvdebug!("connect_t: {}", req);
+                let connect_request: ConnectRequest = NativeHandle::from_native_handle(req);
+                let mut stream_watcher = connect_request.stream();
+                connect_request.delete();
+                let cb = stream_watcher.get_watcher_data().connect_cb.take_unwrap();
+                let status = status_to_maybe_uv_error(status);
+                cb(stream_watcher, status);
+            }
+        }
+    }
+
+    pub fn as_stream(&self) -> StreamWatcher {
+        NativeHandle::from_native_handle(self.native_handle() as *uvll::uv_stream_t)
+    }
+}
+
+impl NativeHandle<*uvll::uv_tcp_t> for TcpWatcher {
+    fn from_native_handle(handle: *uvll::uv_tcp_t) -> TcpWatcher {
+        TcpWatcher(handle)
+    }
+    fn native_handle(&self) -> *uvll::uv_tcp_t {
+        match self { &TcpWatcher(ptr) => ptr }
+    }
+}
+
+pub struct UdpWatcher(*uvll::uv_udp_t);
+impl Watcher for UdpWatcher { }
+
+impl UdpWatcher {
+    pub fn new(loop_: &Loop) -> UdpWatcher {
+        unsafe {
+            let handle = malloc_handle(UV_UDP);
+            assert!(handle.is_not_null());
+            assert_eq!(0, uvll::udp_init(loop_.native_handle(), handle));
+            let mut watcher: UdpWatcher = NativeHandle::from_native_handle(handle);
+            watcher.install_watcher_data();
+            return watcher;
+        }
+    }
+
+    pub fn bind(&mut self, address: SocketAddr) -> Result<(), UvError> {
+        do socket_addr_as_uv_socket_addr(address) |addr| {
+            let result = unsafe {
+                match addr {
+                    UvIpv4SocketAddr(addr) => uvll::udp_bind(self.native_handle(), addr, 0u32),
+                    UvIpv6SocketAddr(addr) => uvll::udp_bind6(self.native_handle(), addr, 0u32),
+                }
+            };
+            match result {
+                0 => Ok(()),
+                _ => Err(UvError(result)),
+            }
+        }
+    }
+
+    pub fn recv_start(&mut self, alloc: AllocCallback, cb: UdpReceiveCallback) {
+        {
+            let data = self.get_watcher_data();
+            data.alloc_cb = Some(alloc);
+            data.udp_recv_cb = Some(cb);
+        }
+
+        unsafe { uvll::udp_recv_start(self.native_handle(), alloc_cb, recv_cb); }
+
+        extern fn alloc_cb(handle: *uvll::uv_udp_t, suggested_size: size_t) -> Buf {
+            let mut udp_watcher: UdpWatcher = NativeHandle::from_native_handle(handle);
+            let alloc_cb = udp_watcher.get_watcher_data().alloc_cb.get_ref();
+            return (*alloc_cb)(suggested_size as uint);
+        }
+
+        extern fn recv_cb(handle: *uvll::uv_udp_t, nread: ssize_t, buf: Buf,
+                          addr: *uvll::sockaddr, flags: c_uint) {
+            // When there's no data to read the recv callback can be a no-op.
+            // This can happen if read returns EAGAIN/EWOULDBLOCK. By ignoring
+            // this we just drop back to kqueue and wait for the next callback.
+            if nread == 0 {
+                return;
+            }
+
+            uvdebug!("buf addr: {}", buf.base);
+            uvdebug!("buf len: {}", buf.len);
+            let mut udp_watcher: UdpWatcher = NativeHandle::from_native_handle(handle);
+            let cb = udp_watcher.get_watcher_data().udp_recv_cb.get_ref();
+            let status = status_to_maybe_uv_error(nread as c_int);
+            let addr = uv_socket_addr_to_socket_addr(sockaddr_to_UvSocketAddr(addr));
+            (*cb)(udp_watcher, nread as int, buf, addr, flags as uint, status);
+        }
+    }
+
+    pub fn recv_stop(&mut self) {
+        unsafe { uvll::udp_recv_stop(self.native_handle()); }
+    }
+
+    pub fn send(&mut self, buf: Buf, address: SocketAddr, cb: UdpSendCallback) {
+        {
+            let data = self.get_watcher_data();
+            assert!(data.udp_send_cb.is_none());
+            data.udp_send_cb = Some(cb);
+        }
+
+        let req = UdpSendRequest::new();
+        do socket_addr_as_uv_socket_addr(address) |addr| {
+            let result = unsafe {
+                match addr {
+                    UvIpv4SocketAddr(addr) => uvll::udp_send(req.native_handle(),
+                                                   self.native_handle(), [buf], addr, send_cb),
+                    UvIpv6SocketAddr(addr) => uvll::udp_send6(req.native_handle(),
+                                                    self.native_handle(), [buf], addr, send_cb),
+                }
+            };
+            assert_eq!(0, result);
+        }
+
+        extern fn send_cb(req: *uvll::uv_udp_send_t, status: c_int) {
+            let send_request: UdpSendRequest = NativeHandle::from_native_handle(req);
+            let mut udp_watcher = send_request.handle();
+            send_request.delete();
+            let cb = udp_watcher.get_watcher_data().udp_send_cb.take_unwrap();
+            let status = status_to_maybe_uv_error(status);
+            cb(udp_watcher, status);
+        }
+    }
+}
+
+impl NativeHandle<*uvll::uv_udp_t> for UdpWatcher {
+    fn from_native_handle(handle: *uvll::uv_udp_t) -> UdpWatcher {
+        UdpWatcher(handle)
+    }
+    fn native_handle(&self) -> *uvll::uv_udp_t {
+        match self { &UdpWatcher(ptr) => ptr }
+    }
+}
+
+// uv_connect_t is a subclass of uv_req_t
+pub struct ConnectRequest(*uvll::uv_connect_t);
+impl Request for ConnectRequest { }
+
+impl ConnectRequest {
+
+    pub fn new() -> ConnectRequest {
+        let connect_handle = unsafe { malloc_req(UV_CONNECT) };
+        assert!(connect_handle.is_not_null());
+        ConnectRequest(connect_handle as *uvll::uv_connect_t)
+    }
+
+    fn stream(&self) -> StreamWatcher {
+        unsafe {
+            let stream_handle = uvll::get_stream_handle_from_connect_req(self.native_handle());
+            NativeHandle::from_native_handle(stream_handle)
+        }
+    }
+
+    fn delete(self) {
+        unsafe { free_req(self.native_handle() as *c_void) }
+    }
+}
+
+impl NativeHandle<*uvll::uv_connect_t> for ConnectRequest {
+    fn from_native_handle(handle: *uvll:: uv_connect_t) -> ConnectRequest {
+        ConnectRequest(handle)
+    }
+    fn native_handle(&self) -> *uvll::uv_connect_t {
+        match self { &ConnectRequest(ptr) => ptr }
+    }
+}
+
+pub struct WriteRequest(*uvll::uv_write_t);
+
+impl Request for WriteRequest { }
+
+impl WriteRequest {
+    pub fn new() -> WriteRequest {
+        let write_handle = unsafe { malloc_req(UV_WRITE) };
+        assert!(write_handle.is_not_null());
+        WriteRequest(write_handle as *uvll::uv_write_t)
+    }
+
+    pub fn stream(&self) -> StreamWatcher {
+        unsafe {
+            let stream_handle = uvll::get_stream_handle_from_write_req(self.native_handle());
+            NativeHandle::from_native_handle(stream_handle)
+        }
+    }
+
+    pub fn delete(self) {
+        unsafe { free_req(self.native_handle() as *c_void) }
+    }
+}
+
+impl NativeHandle<*uvll::uv_write_t> for WriteRequest {
+    fn from_native_handle(handle: *uvll:: uv_write_t) -> WriteRequest {
+        WriteRequest(handle)
+    }
+    fn native_handle(&self) -> *uvll::uv_write_t {
+        match self { &WriteRequest(ptr) => ptr }
+    }
+}
+
+pub struct UdpSendRequest(*uvll::uv_udp_send_t);
+impl Request for UdpSendRequest { }
+
+impl UdpSendRequest {
+    pub fn new() -> UdpSendRequest {
+        let send_handle = unsafe { malloc_req(UV_UDP_SEND) };
+        assert!(send_handle.is_not_null());
+        UdpSendRequest(send_handle as *uvll::uv_udp_send_t)
+    }
+
+    pub fn handle(&self) -> UdpWatcher {
+        let send_request_handle = unsafe {
+            uvll::get_udp_handle_from_send_req(self.native_handle())
+        };
+        NativeHandle::from_native_handle(send_request_handle)
+    }
+
+    pub fn delete(self) {
+        unsafe { free_req(self.native_handle() as *c_void) }
+    }
+}
+
+impl NativeHandle<*uvll::uv_udp_send_t> for UdpSendRequest {
+    fn from_native_handle(handle: *uvll::uv_udp_send_t) -> UdpSendRequest {
+        UdpSendRequest(handle)
+    }
+    fn native_handle(&self) -> *uvll::uv_udp_send_t {
+        match self { &UdpSendRequest(ptr) => ptr }
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use std::util::ignore;
+    use std::cell::Cell;
+    use std::vec;
+    use std::unstable::run_in_bare_thread;
+    use std::rt::thread::Thread;
+    use std::rt::test::*;
+    use super::super::{Loop, AllocCallback};
+    use super::super::{vec_from_uv_buf, vec_to_uv_buf, slice_to_uv_buf};
+
+    #[test]
+    fn connect_close_ip4() {
+        do run_in_bare_thread() {
+            let mut loop_ = Loop::new();
+            let mut tcp_watcher = { TcpWatcher::new(&mut loop_) };
+            // Connect to a port where nobody is listening
+            let addr = next_test_ip4();
+            do tcp_watcher.connect(addr) |stream_watcher, status| {
+                uvdebug!("tcp_watcher.connect!");
+                assert!(status.is_some());
+                assert_eq!(status.unwrap().name(), ~"ECONNREFUSED");
+                stream_watcher.close(||());
+            }
+            loop_.run();
+            loop_.close();
+        }
+    }
+
+    #[test]
+    fn connect_close_ip6() {
+        do run_in_bare_thread() {
+            let mut loop_ = Loop::new();
+            let mut tcp_watcher = { TcpWatcher::new(&mut loop_) };
+            // Connect to a port where nobody is listening
+            let addr = next_test_ip6();
+            do tcp_watcher.connect(addr) |stream_watcher, status| {
+                uvdebug!("tcp_watcher.connect!");
+                assert!(status.is_some());
+                assert_eq!(status.unwrap().name(), ~"ECONNREFUSED");
+                stream_watcher.close(||());
+            }
+            loop_.run();
+            loop_.close();
+        }
+    }
+
+    #[test]
+    fn udp_bind_close_ip4() {
+        do run_in_bare_thread() {
+            let mut loop_ = Loop::new();
+            let mut udp_watcher = { UdpWatcher::new(&mut loop_) };
+            let addr = next_test_ip4();
+            udp_watcher.bind(addr);
+            udp_watcher.close(||());
+            loop_.run();
+            loop_.close();
+        }
+    }
+
+    #[test]
+    fn udp_bind_close_ip6() {
+        do run_in_bare_thread() {
+            let mut loop_ = Loop::new();
+            let mut udp_watcher = { UdpWatcher::new(&mut loop_) };
+            let addr = next_test_ip6();
+            udp_watcher.bind(addr);
+            udp_watcher.close(||());
+            loop_.run();
+            loop_.close();
+        }
+    }
+
+    #[test]
+    fn listen_ip4() {
+        do run_in_bare_thread() {
+            static MAX: int = 10;
+            let mut loop_ = Loop::new();
+            let mut server_tcp_watcher = { TcpWatcher::new(&mut loop_) };
+            let addr = next_test_ip4();
+            server_tcp_watcher.bind(addr);
+            let loop_ = loop_;
+            uvdebug!("listening");
+            let mut stream = server_tcp_watcher.as_stream();
+            let res = do stream.listen |mut server_stream_watcher, status| {
+                uvdebug!("listened!");
+                assert!(status.is_none());
+                let mut loop_ = loop_;
+                let client_tcp_watcher = TcpWatcher::new(&mut loop_);
+                let mut client_tcp_watcher = client_tcp_watcher.as_stream();
+                server_stream_watcher.accept(client_tcp_watcher);
+                let count_cell = Cell::new(0);
+                let server_stream_watcher = server_stream_watcher;
+                uvdebug!("starting read");
+                let alloc: AllocCallback = |size| {
+                    vec_to_uv_buf(vec::from_elem(size, 0u8))
+                };
+                do client_tcp_watcher.read_start(alloc) |stream_watcher, nread, buf, status| {
+
+                    uvdebug!("i'm reading!");
+                    let buf = vec_from_uv_buf(buf);
+                    let mut count = count_cell.take();
+                    if status.is_none() {
+                        uvdebug!("got {} bytes", nread);
+                        let buf = buf.unwrap();
+                        for byte in buf.slice(0, nread as uint).iter() {
+                            assert!(*byte == count as u8);
+                            uvdebug!("{}", *byte as uint);
+                            count += 1;
+                        }
+                    } else {
+                        assert_eq!(count, MAX);
+                        do stream_watcher.close {
+                            server_stream_watcher.close(||());
+                        }
+                    }
+                    count_cell.put_back(count);
+                }
+            };
+
+            assert!(res.is_ok());
+
+            let client_thread = do Thread::start {
+                uvdebug!("starting client thread");
+                let mut loop_ = Loop::new();
+                let mut tcp_watcher = { TcpWatcher::new(&mut loop_) };
+                do tcp_watcher.connect(addr) |mut stream_watcher, status| {
+                    uvdebug!("connecting");
+                    assert!(status.is_none());
+                    let msg = ~[0, 1, 2, 3, 4, 5, 6 ,7 ,8, 9];
+                    let buf = slice_to_uv_buf(msg);
+                    let msg_cell = Cell::new(msg);
+                    do stream_watcher.write(buf) |stream_watcher, status| {
+                        uvdebug!("writing");
+                        assert!(status.is_none());
+                        let msg_cell = Cell::new(msg_cell.take());
+                        stream_watcher.close(||ignore(msg_cell.take()));
+                    }
+                }
+                loop_.run();
+                loop_.close();
+            };
+
+            let mut loop_ = loop_;
+            loop_.run();
+            loop_.close();
+            client_thread.join();
+        };
+    }
+
+    #[test]
+    fn listen_ip6() {
+        do run_in_bare_thread() {
+            static MAX: int = 10;
+            let mut loop_ = Loop::new();
+            let mut server_tcp_watcher = { TcpWatcher::new(&mut loop_) };
+            let addr = next_test_ip6();
+            server_tcp_watcher.bind(addr);
+            let loop_ = loop_;
+            uvdebug!("listening");
+            let mut stream = server_tcp_watcher.as_stream();
+            let res = do stream.listen |mut server_stream_watcher, status| {
+                uvdebug!("listened!");
+                assert!(status.is_none());
+                let mut loop_ = loop_;
+                let client_tcp_watcher = TcpWatcher::new(&mut loop_);
+                let mut client_tcp_watcher = client_tcp_watcher.as_stream();
+                server_stream_watcher.accept(client_tcp_watcher);
+                let count_cell = Cell::new(0);
+                let server_stream_watcher = server_stream_watcher;
+                uvdebug!("starting read");
+                let alloc: AllocCallback = |size| {
+                    vec_to_uv_buf(vec::from_elem(size, 0u8))
+                };
+                do client_tcp_watcher.read_start(alloc)
+                    |stream_watcher, nread, buf, status| {
+
+                    uvdebug!("i'm reading!");
+                    let buf = vec_from_uv_buf(buf);
+                    let mut count = count_cell.take();
+                    if status.is_none() {
+                        uvdebug!("got {} bytes", nread);
+                        let buf = buf.unwrap();
+                        let r = buf.slice(0, nread as uint);
+                        for byte in r.iter() {
+                            assert!(*byte == count as u8);
+                            uvdebug!("{}", *byte as uint);
+                            count += 1;
+                        }
+                    } else {
+                        assert_eq!(count, MAX);
+                        do stream_watcher.close {
+                            server_stream_watcher.close(||());
+                        }
+                    }
+                    count_cell.put_back(count);
+                }
+            };
+            assert!(res.is_ok());
+
+            let client_thread = do Thread::start {
+                uvdebug!("starting client thread");
+                let mut loop_ = Loop::new();
+                let mut tcp_watcher = { TcpWatcher::new(&mut loop_) };
+                do tcp_watcher.connect(addr) |mut stream_watcher, status| {
+                    uvdebug!("connecting");
+                    assert!(status.is_none());
+                    let msg = ~[0, 1, 2, 3, 4, 5, 6 ,7 ,8, 9];
+                    let buf = slice_to_uv_buf(msg);
+                    let msg_cell = Cell::new(msg);
+                    do stream_watcher.write(buf) |stream_watcher, status| {
+                        uvdebug!("writing");
+                        assert!(status.is_none());
+                        let msg_cell = Cell::new(msg_cell.take());
+                        stream_watcher.close(||ignore(msg_cell.take()));
+                    }
+                }
+                loop_.run();
+                loop_.close();
+            };
+
+            let mut loop_ = loop_;
+            loop_.run();
+            loop_.close();
+            client_thread.join();
+        }
+    }
+
+    #[test]
+    fn udp_recv_ip4() {
+        do run_in_bare_thread() {
+            static MAX: int = 10;
+            let mut loop_ = Loop::new();
+            let server_addr = next_test_ip4();
+            let client_addr = next_test_ip4();
+
+            let mut server = UdpWatcher::new(&loop_);
+            assert!(server.bind(server_addr).is_ok());
+
+            uvdebug!("starting read");
+            let alloc: AllocCallback = |size| {
+                vec_to_uv_buf(vec::from_elem(size, 0u8))
+            };
+
+            do server.recv_start(alloc) |mut server, nread, buf, src, flags, status| {
+                server.recv_stop();
+                uvdebug!("i'm reading!");
+                assert!(status.is_none());
+                assert_eq!(flags, 0);
+                assert_eq!(src, client_addr);
+
+                let buf = vec_from_uv_buf(buf);
+                let mut count = 0;
+                uvdebug!("got {} bytes", nread);
+
+                let buf = buf.unwrap();
+                for &byte in buf.slice(0, nread as uint).iter() {
+                    assert!(byte == count as u8);
+                    uvdebug!("{}", byte as uint);
+                    count += 1;
+                }
+                assert_eq!(count, MAX);
+
+                server.close(||{});
+            }
+
+            let thread = do Thread::start {
+                let mut loop_ = Loop::new();
+                let mut client = UdpWatcher::new(&loop_);
+                assert!(client.bind(client_addr).is_ok());
+                let msg = ~[0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
+                let buf = slice_to_uv_buf(msg);
+                do client.send(buf, server_addr) |client, status| {
+                    uvdebug!("writing");
+                    assert!(status.is_none());
+                    client.close(||{});
+                }
+
+                loop_.run();
+                loop_.close();
+            };
+
+            loop_.run();
+            loop_.close();
+            thread.join();
+        }
+    }
+
+    #[test]
+    fn udp_recv_ip6() {
+        do run_in_bare_thread() {
+            static MAX: int = 10;
+            let mut loop_ = Loop::new();
+            let server_addr = next_test_ip6();
+            let client_addr = next_test_ip6();
+
+            let mut server = UdpWatcher::new(&loop_);
+            assert!(server.bind(server_addr).is_ok());
+
+            uvdebug!("starting read");
+            let alloc: AllocCallback = |size| {
+                vec_to_uv_buf(vec::from_elem(size, 0u8))
+            };
+
+            do server.recv_start(alloc) |mut server, nread, buf, src, flags, status| {
+                server.recv_stop();
+                uvdebug!("i'm reading!");
+                assert!(status.is_none());
+                assert_eq!(flags, 0);
+                assert_eq!(src, client_addr);
+
+                let buf = vec_from_uv_buf(buf);
+                let mut count = 0;
+                uvdebug!("got {} bytes", nread);
+
+                let buf = buf.unwrap();
+                for &byte in buf.slice(0, nread as uint).iter() {
+                    assert!(byte == count as u8);
+                    uvdebug!("{}", byte as uint);
+                    count += 1;
+                }
+                assert_eq!(count, MAX);
+
+                server.close(||{});
+            }
+
+            let thread = do Thread::start {
+                let mut loop_ = Loop::new();
+                let mut client = UdpWatcher::new(&loop_);
+                assert!(client.bind(client_addr).is_ok());
+                let msg = ~[0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
+                let buf = slice_to_uv_buf(msg);
+                do client.send(buf, server_addr) |client, status| {
+                    uvdebug!("writing");
+                    assert!(status.is_none());
+                    client.close(||{});
+                }
+
+                loop_.run();
+                loop_.close();
+            };
+
+            loop_.run();
+            loop_.close();
+            thread.join();
+        }
+    }
+}