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+/*************************************************************************/
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+/* udp_server.cpp */
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+/*************************************************************************/
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+/* This file is part of: */
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+/* GODOT ENGINE */
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+/* https://godotengine.org */
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+/*************************************************************************/
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+/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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+/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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+/* */
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+/* Permission is hereby granted, free of charge, to any person obtaining */
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+/* a copy of this software and associated documentation files (the */
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+/* "Software"), to deal in the Software without restriction, including */
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+/* without limitation the rights to use, copy, modify, merge, publish, */
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+/* distribute, sublicense, and/or sell copies of the Software, and to */
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+/* permit persons to whom the Software is furnished to do so, subject to */
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+/* the following conditions: */
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+/* */
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+/* The above copyright notice and this permission notice shall be */
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+/* included in all copies or substantial portions of the Software. */
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+/* */
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+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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+/*************************************************************************/
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+
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+#include "udp_server.h"
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+
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+void UDPServer::_bind_methods() {
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+
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+ ClassDB::bind_method(D_METHOD("listen", "port", "bind_address"), &UDPServer::listen, DEFVAL("*"));
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+ ClassDB::bind_method(D_METHOD("is_connection_available"), &UDPServer::is_connection_available);
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+ ClassDB::bind_method(D_METHOD("is_listening"), &UDPServer::is_listening);
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+ ClassDB::bind_method(D_METHOD("take_connection"), &UDPServer::take_connection);
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+ ClassDB::bind_method(D_METHOD("stop"), &UDPServer::stop);
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+}
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+
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+Error UDPServer::listen(uint16_t p_port, const IP_Address &p_bind_address) {
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+
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+ ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE);
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+ ERR_FAIL_COND_V(_sock->is_open(), ERR_ALREADY_IN_USE);
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+ ERR_FAIL_COND_V(!p_bind_address.is_valid() && !p_bind_address.is_wildcard(), ERR_INVALID_PARAMETER);
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+
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+ Error err;
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+ IP::Type ip_type = IP::TYPE_ANY;
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+
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+ if (p_bind_address.is_valid())
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+ ip_type = p_bind_address.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
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+
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+ err = _sock->open(NetSocket::TYPE_UDP, ip_type);
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+
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+ if (err != OK)
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+ return ERR_CANT_CREATE;
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+
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+ _sock->set_blocking_enabled(false);
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+ _sock->set_reuse_address_enabled(true);
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+ err = _sock->bind(p_bind_address, p_port);
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+
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+ if (err != OK) {
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+ stop();
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+ return err;
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+ }
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+ bind_address = p_bind_address;
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+ bind_port = p_port;
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+ return OK;
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+}
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+
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+bool UDPServer::is_listening() const {
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+ ERR_FAIL_COND_V(!_sock.is_valid(), false);
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+
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+ return _sock->is_open();
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+}
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+
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+bool UDPServer::is_connection_available() const {
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+
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+ ERR_FAIL_COND_V(!_sock.is_valid(), false);
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+
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+ if (!_sock->is_open())
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+ return false;
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+
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+ Error err = _sock->poll(NetSocket::POLL_TYPE_IN, 0);
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+ return (err == OK);
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+}
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+
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+Ref<PacketPeerUDP> UDPServer::take_connection() {
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+
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+ Ref<PacketPeerUDP> conn;
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+ if (!is_connection_available()) {
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+ return conn;
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+ }
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+
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+ conn = Ref<PacketPeerUDP>(memnew(PacketPeerUDP));
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+ conn->connect_socket(_sock);
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+ _sock = Ref<NetSocket>(NetSocket::create());
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+ listen(bind_port, bind_address);
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+ return conn;
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+}
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+
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+void UDPServer::stop() {
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+
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+ if (_sock.is_valid()) {
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+ _sock->close();
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+ }
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+ bind_port = 0;
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+ bind_address = IP_Address();
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+}
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+
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+UDPServer::UDPServer() :
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+ _sock(Ref<NetSocket>(NetSocket::create())) {
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+}
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+
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+UDPServer::~UDPServer() {
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+
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+ stop();
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+}
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