UDPServer and PacketPeerUDP connect_to_host.

UDP sockets can be "connected" to filter packets from a specific source.
In case of a bound socket (e.g. server), a new socket can be created on
the same address/port that will receive all packets that are not
filtered by a more specific socket (e.g. the previously connect socket).

This way, a UDPServer can listen to new packets, and return a new
PacketPeerUDP when receiving one, knowing that is a "new client".

1 files changed, 58 insertions, 0 deletions

diff --git a/core/io/udp_server.h b/core/io/udp_server.h
new file mode 100644
index 0000000000..5182a04246
--- /dev/null
+++ b/core/io/udp_server.h
@@ -0,0 +1,58 @@
+/*************************************************************************/
+/*  udp_server.h                                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* 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.                */
+/*************************************************************************/
+
+#ifndef UDP_SERVER_H
+#define UDP_SERVER_H
+
+#include "core/io/net_socket.h"
+#include "core/io/packet_peer_udp.h"
+
+class UDPServer : public Reference {
+	GDCLASS(UDPServer, Reference);
+
+protected:
+	static void _bind_methods();
+	int bind_port;
+	IP_Address bind_address;
+	Ref<NetSocket> _sock;
+
+public:
+	Error listen(uint16_t p_port, const IP_Address &p_bind_address = IP_Address("*"));
+	bool is_listening() const;
+	bool is_connection_available() const;
+	Ref<PacketPeerUDP> take_connection();
+
+	void stop();
+
+	UDPServer();
+	~UDPServer();
+};
+
+#endif // UDP_SERVER_H