added sys.net.UdpSocket with neko implementation

std/neko/_std/sys/net/Socket.hx

@@ -122,7 +122,7 @@ class Socket {
 	public var custom : Dynamic;
 
 	public function new() : Void {
-		__s = socket_new(false);
+		if( __s == null ) __s = socket_new(false);
 		input = new SocketInput(__s);
 		output = new SocketOutput(__s);
 	}

std/neko/_std/sys/net/UdpSocket.hx

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C)2005-2012 Haxe Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+package sys.net;
+import haxe.io.Error;
+
+@:coreApi
+class UdpSocket extends Socket {
+
+	public function new() : Void {
+		__s = Socket.socket_new(true);
+		super();
+	}
+
+	public function sendTo( buf : haxe.io.Bytes, pos : Int, len : Int, addr : { host : Int, port : Int } ) : Int {
+		return try {
+			socket_send_to(__s, buf.getData(), pos, len, addr);
+		} catch( e : Dynamic ) {
+			if( e == "Blocking" )
+				throw Blocked;
+			else
+				throw Custom(e);
+		}
+	}
+	
+	public function readFrom( buf : haxe.io.Bytes, pos : Int, len : Int, addr : { host : Int, port : Int } ) : Int {
+		var r;
+		try {
+			r = socket_recv_from(__s,buf.getData(),pos,len,addr);
+		} catch( e : Dynamic ) {
+			if( e == "Blocking" )
+				throw Blocked;
+			else
+				throw Custom(e);
+		}
+		if( r == 0 )
+			throw new haxe.io.Eof();
+		return r;
+	}
+	
+	static var socket_recv_from = neko.Lib.loadLazy("std", "socket_recv_from", 5);
+	static var socket_send_to = neko.Lib.loadLazy("std", "socket_send_to", 5);
+	
+}

std/sys/net/UdpSocket.hx

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C)2005-2012 Haxe Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+package sys.net;
+
+/**
+	A UDP socket class
+**/
+class UdpSocket extends Socket {
+	
+	public function new() {
+		throw "Not available on this platform";
+		super();
+	}
+
+	/**
+		Sends data to the specified target host/port address.
+	**/
+	public function sendTo( buf : haxe.io.Bytes, pos : Int, len : Int, addr : { host : Int, port : Int } ) : Int {
+		return 0;
+	}
+	
+	/**
+		Reads data from any incoming address and store the receiver address into the addr object.
+	**/
+	public function readFrom( buf : haxe.io.Bytes, pos : Int, len : Int, addr : { host : Int, port : Int } ) : Int {
+		return 0;
+	}
+
+}