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base.h
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base.h
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#ifndef NETWORKBASE_H
#define NETWORKBASE_H
#include <string>
#include <map>
#include <utility>
#include <iostream>
#include <raknet/MessageIdentifiers.h>
#include <raknet/RakPeerInterface.h>
#include <raknet/RakNetTypes.h>
#include <raknet/BitStream.h>
#include <fast-event-system/bind.h>
#include <fast-event-system/clock.h>
#include <fast-event-system/async_fast.h>
#include <coroutine/coroutine.h>
#include "serialize.h"
#include "deserialize.h"
#include "api.h"
#define DEFAULT_CONNECTION_TIMEOUT 5000
#define MAX_CLIENTS_DEFAULT 16000
#define ROOM_DEFAULT "default"
#define DEFAULT_RELIABLE_TIMEOUT 1000
namespace ser {
using string = RakNet::RakString;
using stream = RakNet::BitStream;
// version, pipe, sender
using net_channel = fes::bind<int, ser::stream, ser::string>;
using net_connection = fes::connection<int, ser::stream, ser::string>;
enum InternalMessages
{
// received by server
NET_MESSAGE_BROADCAST = ID_USER_PACKET_ENUM + 1,
NET_MESSAGE_FORWARD = ID_USER_PACKET_ENUM + 2,
// received by both (client and server)
NET_MESSAGE_DATA = ID_USER_PACKET_ENUM + 3,
NET_MESSAGE_DISCOVERY = ID_USER_PACKET_ENUM + 4,
NET_MESSAGE_NEW_CLIENT = ID_USER_PACKET_ENUM + 5,
NET_MESSAGE_DISCONNECT_CLIENT = ID_USER_PACKET_ENUM + 6,
// entrar y salir de un canal
NET_MESSAGE_ROOM_SUBSCRIBE = ID_USER_PACKET_ENUM + 7,
NET_MESSAGE_ROOM_UNSUBSCRIBE = ID_USER_PACKET_ENUM + 8,
// hablar a través de un canal
NET_MESSAGE_ROOM_FORWARD = ID_USER_PACKET_ENUM + 9,
// enviar desde el servidor al cliente
NET_MESSAGE_ROOM_DATA = ID_USER_PACKET_ENUM + 10,
// TODO: whois: pedir listado de canales de un cliente
// NET_MESSAGE_WHOIS = ID_USER_PACKET_ENUM + 11,
//
NET_MESSAGE_CUSTOM = ID_USER_PACKET_ENUM + 12
};
class serializer_API network_base
{
public:
explicit network_base(const ser::string& alias);
virtual ~network_base();
network_base(const network_base&) = delete;
network_base& operator=(const network_base&) = delete;
void update()
{
dispatch_one();
}
void update(cu::yield_type& yield)
{
dispatch_one();
yield( cu::control_type{} );
}
void wait(fes::deltatime timeout = fes::deltatime(0))
{
if(timeout > fes::deltatime(0))
{
auto mark = fes::high_resolution_clock() + timeout;
while(fes::high_resolution_clock() <= mark)
{
if(dispatch_one())
{
break;
}
}
}
else
{
while(true)
{
if(dispatch_one())
{
break;
}
#ifndef _WIN32
// for avoid sleeps, use coroutines
usleep(100);
#endif
}
}
}
void wait(cu::yield_type& yield, fes::deltatime timeout = fes::deltatime(0))
{
if(timeout > fes::deltatime(0))
{
auto mark = fes::high_resolution_clock() + timeout;
while(fes::high_resolution_clock() <= mark)
{
if(dispatch_one())
{
break;
}
yield( cu::control_type{} );
}
}
else
{
while(true)
{
if(dispatch_one())
{
break;
}
yield( cu::control_type{} );
}
}
}
bool dispatch_one();
virtual void on_new_incoming_connection(RakNet::Packet* packet) { ; }
virtual void on_package(RakNet::Packet* packet) = 0;
template <typename ... Args>
void unpack(RakNet::Packet* packet, Args& ... data) const
{
RakNet::BitStream pipe(packet->data, packet->length, false);
read_header(pipe);
ser::deserialize(pipe, data...);
}
void read_header(ser::stream& stream) const
{
stream.IgnoreBytes(sizeof(RakNet::MessageID));
}
void write_header(ser::stream& stream, RakNet::MessageID id_interface) const
{
// static_assert( (sizeof(RakNet::MessageID) == sizeof(id_interface)) );
stream.Write(id_interface);
}
ser::string get_guid_sender(RakNet::Packet* packet) const
{
auto& guid = _peer->GetGuidFromSystemAddress(packet->systemAddress);
return ser::string( guid.ToString() );
}
ser::string get_guid() const
{
auto& guid = _peer->GetMyGUID();
return ser::string( guid.ToString() );
}
ser::string get_name() const
{
auto& guid = _peer->GetMyGUID();
auto client = _peer->GetSystemAddressFromGuid(guid);
return ser::string( client.ToString() );
}
RakNet::SystemAddress convert_to_address(const ser::string& guid) const
{
RakNet::RakNetGUID rak_guid;
rak_guid.FromString(guid.C_String());
return _peer->GetSystemAddressFromGuid(rak_guid);
}
ser::string convert_to_guid(const RakNet::SystemAddress& addr) const
{
RakNet::RakNetGUID guid = _peer->GetGuidFromSystemAddress(addr);
return ser::string( guid.ToString() );
}
auto& get_channel(int port) { return _requests[port]; }
auto& get_room(const std::string& room) { return _rooms[room]; }
const auto& get_alias() const {return _alias;}
bool valid_alias() const { return _alias.GetLength() > 0; }
// can throw exceptions
ser::string get_alias(const ser::string& guid) const
{
auto it = _resolver.find(guid);
auto ite = _resolver.end();
if(it != ite)
{
return it->second;
}
else
{
throw std::exception();
}
}
// can throw exceptions
ser::string get_guid(const ser::string& alias) const
{
for(auto& pair : _resolver)
{
if(pair.second == alias)
{
return pair.first;
}
}
throw std::exception();
}
uint64 get_lag(const ser::string& guid) const
{
auto address = convert_to_address(guid);
return _peer->GetClockDifferential(address);
}
void set_alias(const ser::string& alias)
{
_alias = alias;
notify_alias(get_guid(), alias);
}
void print_resolver_table()
{
if(!_resolver.empty())
{
std::cout << "-- resolver table --" << std::endl;
for(auto& pair : _resolver)
{
std::cout << pair.second << " (" << pair.first << ")" << std::endl;
}
}
else
{
std::cout << "-- resolver table empty --" << std::endl;
}
}
protected:
virtual void notify_alias(const ser::string& guid, const ser::string& alias) = 0;
public:
// connection by client is failed (guid)
fes::bind<ser::string> id_connection_attempt_failed;
// connection by client is ok
fes::bind<ser::string> on_connection_request_accepted;
// other side is disconnected (client or server) (guid)
fes::bind<ser::string> on_id_connection_lost;
// a client request disconnection (guid)
fes::bind<ser::string> on_id_disconnection_notification;
// guid
fes::bind<ser::string> on_new_client;
fes::bind<ser::string> on_disconnect;
// guid, alias
fes::bind<ser::string, ser::string> on_changed_alias;
protected:
RakNet::RakPeerInterface* _peer;
std::unordered_map<int, ser::net_channel> _requests;
std::unordered_map<std::string, ser::net_channel> _rooms;
std::map<ser::string, ser::string> _resolver;
ser::string _alias;
};
}
#endif