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144 | /**************************************************************************/
/* enet_connection.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 ENET_CONNECTION_H
#define ENET_CONNECTION_H
#include "enet_packet_peer.h"
#include "core/crypto/crypto.h"
#include "core/object/ref_counted.h"
#include <enet/enet.h>
template <typename T>
class TypedArray;
class ENetConnection : public RefCounted {
GDCLASS(ENetConnection, RefCounted);
public:
enum CompressionMode {
COMPRESS_NONE = 0,
COMPRESS_RANGE_CODER,
COMPRESS_FASTLZ,
COMPRESS_ZLIB,
COMPRESS_ZSTD,
};
enum HostStatistic {
HOST_TOTAL_SENT_DATA,
HOST_TOTAL_SENT_PACKETS,
HOST_TOTAL_RECEIVED_DATA,
HOST_TOTAL_RECEIVED_PACKETS,
};
enum EventType {
EVENT_ERROR = -1,
EVENT_NONE = 0,
EVENT_CONNECT,
EVENT_DISCONNECT,
EVENT_RECEIVE,
};
struct Event {
Ref<ENetPacketPeer> peer;
enet_uint8 channel_id = 0;
enet_uint32 data = 0;
ENetPacket *packet = nullptr;
};
protected:
static void _bind_methods();
private:
ENetHost *host = nullptr;
List<Ref<ENetPacketPeer>> peers;
EventType _parse_event(const ENetEvent &p_event, Event &r_event);
Error _create(ENetAddress *p_address, int p_max_peers, int p_max_channels, int p_in_bandwidth, int p_out_bandwidth);
Array _service(int p_timeout = 0);
void _broadcast(int p_channel, PackedByteArray p_packet, int p_flags);
TypedArray<ENetPacketPeer> _get_peers();
class Compressor {
private:
CompressionMode mode = COMPRESS_NONE;
Vector<uint8_t> src_mem;
Vector<uint8_t> dst_mem;
ENetCompressor enet_compressor;
Compressor(CompressionMode mode);<--- Class 'Compressor' has a constructor with 1 argument that is not explicit. [+]Class 'Compressor' has a constructor with 1 argument that is not explicit. Such constructors should in general be explicit for type safety reasons. Using the explicit keyword in the constructor means some mistakes when using the class can be avoided.
static size_t enet_compress(void *context, const ENetBuffer *inBuffers, size_t inBufferCount, size_t inLimit, enet_uint8 *outData, size_t outLimit);
static size_t enet_decompress(void *context, const enet_uint8 *inData, size_t inLimit, enet_uint8 *outData, size_t outLimit);
static void enet_compressor_destroy(void *context) {
memdelete((Compressor *)context);<--- C-style pointer casting [+]C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.
}
public:
static void setup(ENetHost *p_host, CompressionMode p_mode);
};
public:
void broadcast(enet_uint8 p_channel, ENetPacket *p_packet);
void socket_send(const String &p_address, int p_port, const PackedByteArray &p_packet);
Error create_host_bound(const IPAddress &p_bind_address = IPAddress("*"), int p_port = 0, int p_max_peers = 32, int p_max_channels = 0, int p_in_bandwidth = 0, int p_out_bandwidth = 0);
Error create_host(int p_max_peers = 32, int p_max_channels = 0, int p_in_bandwidth = 0, int p_out_bandwidth = 0);
void destroy();
Ref<ENetPacketPeer> connect_to_host(const String &p_address, int p_port, int p_channels, int p_data = 0);
EventType service(int p_timeout, Event &r_event);
int check_events(EventType &r_type, Event &r_event);
void flush();
void bandwidth_limit(int p_in_bandwidth = 0, int p_out_bandwidth = 0);
void channel_limit(int p_max_channels);
void bandwidth_throttle();
void compress(CompressionMode p_mode);
double pop_statistic(HostStatistic p_stat);
int get_max_channels() const;
// Extras
void get_peers(List<Ref<ENetPacketPeer>> &r_peers);
int get_local_port() const;
// Godot additions
Error dtls_server_setup(const Ref<TLSOptions> &p_options);
Error dtls_client_setup(const String &p_hostname, const Ref<TLSOptions> &p_options);
void refuse_new_connections(bool p_refuse);
ENetConnection() {}
~ENetConnection();
};
VARIANT_ENUM_CAST(ENetConnection::CompressionMode);
VARIANT_ENUM_CAST(ENetConnection::EventType);
VARIANT_ENUM_CAST(ENetConnection::HostStatistic);
#endif // ENET_CONNECTION_H
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