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virtualx-engine/core/io/udp_server.h

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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".
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/*************************************************************************/
/* udp_server.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
Update copyright statements to 2022 Happy new year to the wonderful Godot community!
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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".
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/* */
/* 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"
Rename Reference to RefCounted
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class UDPServer : public RefCounted {
GDCLASS(UDPServer, RefCounted);
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".
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protected:
UDPServer handles PacketPeerUDP-client association 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.
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enum {
PACKET_BUFFER_SIZE = 65536
};
struct Peer {
Zero initialize all pointer class and struct members This prevents the pitfall of UB when checking if they have been assigned something valid by comparing to nullptr.
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PacketPeerUDP *peer = nullptr;
Rename `IP_Unix`, `IP_Address` and `TCP_Server` to remove underscores
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IPAddress ip;
UDPServer handles PacketPeerUDP-client association 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.
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uint16_t port = 0;
bool operator==(const Peer &p_other) const {
return (ip == p_other.ip && port == p_other.port);
}
};
uint8_t recv_buffer[PACKET_BUFFER_SIZE];
List<Peer> peers;
List<Peer> pending;
int max_pending_connections = 16;
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".
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Ref<NetSocket> _sock;
UDPServer handles PacketPeerUDP-client association 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.
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static void _bind_methods();
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".
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public:
Rename `IP_Unix`, `IP_Address` and `TCP_Server` to remove underscores
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void remove_peer(IPAddress p_ip, int p_port);
Error listen(uint16_t p_port, const IPAddress &p_bind_address = IPAddress("*"));
UDPServer handles PacketPeerUDP-client association 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.
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Error poll();
Allow local port control on net_socket connections
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int get_local_port() const;
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".
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bool is_listening() const;
bool is_connection_available() const;
UDPServer handles PacketPeerUDP-client association 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.
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void set_max_pending_connections(int p_max);
int get_max_pending_connections() const;
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".
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Ref<PacketPeerUDP> take_connection();
void stop();
UDPServer();
~UDPServer();
};
#endif // UDP_SERVER_H
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