147bbe2155
UDPServer now uses a single socket which is shared with the PacketPeerUDP it creates and has a new `poll` function to read incoming packets on that socket and delivers them to the appropriate peer. PacketPeerUDP created this way never reads from the socket, but are allowed to write on it using sendto. This is needed because Windows (unlike Linux/BSD) does not support packet routing when multiple sockets are bound on the same address/port.
101 lines
4.2 KiB
C++
101 lines
4.2 KiB
C++
/*************************************************************************/
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/* packet_peer_udp.h */
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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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 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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#ifndef PACKET_PEER_UDP_H
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#define PACKET_PEER_UDP_H
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#include "core/io/ip.h"
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#include "core/io/net_socket.h"
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#include "core/io/packet_peer.h"
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class UDPServer;
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class PacketPeerUDP : public PacketPeer {
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GDCLASS(PacketPeerUDP, PacketPeer);
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protected:
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enum {
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PACKET_BUFFER_SIZE = 65536
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};
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RingBuffer<uint8_t> rb;
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uint8_t recv_buffer[PACKET_BUFFER_SIZE];
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uint8_t packet_buffer[PACKET_BUFFER_SIZE];
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IP_Address packet_ip;
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int packet_port = 0;
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int queue_count = 0;
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IP_Address peer_addr;
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int peer_port = 0;
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bool connected = false;
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bool blocking = true;
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bool broadcast = false;
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UDPServer *udp_server = nullptr;
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Ref<NetSocket> _sock;
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static void _bind_methods();
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String _get_packet_ip() const;
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Error _set_dest_address(const String &p_address, int p_port);
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Error _poll();
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public:
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void set_blocking_mode(bool p_enable);
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Error listen(int p_port, const IP_Address &p_bind_address = IP_Address("*"), int p_recv_buffer_size = 65536);
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void close();
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Error wait();
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bool is_listening() const;
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Error connect_shared_socket(Ref<NetSocket> p_sock, IP_Address p_ip, uint16_t p_port, UDPServer *ref); // Used by UDPServer
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void disconnect_shared_socket(); // Used by UDPServer
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Error store_packet(IP_Address p_ip, uint32_t p_port, uint8_t *p_buf, int p_buf_size); // Used internally and by UDPServer
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Error connect_to_host(const IP_Address &p_host, int p_port);
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bool is_connected_to_host() const;
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IP_Address get_packet_address() const;
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int get_packet_port() const;
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void set_dest_address(const IP_Address &p_address, int p_port);
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Error put_packet(const uint8_t *p_buffer, int p_buffer_size) override;
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Error get_packet(const uint8_t **r_buffer, int &r_buffer_size) override;
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int get_available_packet_count() const override;
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int get_max_packet_size() const override;
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void set_broadcast_enabled(bool p_enabled);
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Error join_multicast_group(IP_Address p_multi_address, String p_if_name);
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Error leave_multicast_group(IP_Address p_multi_address, String p_if_name);
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PacketPeerUDP();
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~PacketPeerUDP();
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};
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#endif // PACKET_PEER_UDP_H
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