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 | #include "WorldSocket.hpp"
#include "Service.hpp"
#include <algorithm>
#include <string>
#include <iostream>
#include <typeinfo>
#include <stdexcept>
#include <string.h>
 
namespace Akhynia { namespace SDK { namespace Network {
 
	/// Constructor
	WorldSocket::WorldSocket()
		:	pHandler(0), pSocket(Base::Service::GetSingleton()->GetIoService()), 
			pListenSocket(0), pIsConnected(false), pIsServer(false), pListenOnceCheck(false)
	{
		Base::Service::GetSingleton()->Init();
	}
	/// Destructor
	WorldSocket::~WorldSocket()
	{
		pPacketQueueMutex.lock();
		while (pPacketQueue.empty() == false)
			pPacketQueue.pop();
		pPacketQueueMutex.unlock();
 
		Disconnect();
 
		if (pListenSocket != 0)
		{
			delete pListenSocket;
		}
 
		Base::Service::GetSingleton()->UnInit();
	}
 
	// ============================================================================================ //
 
	/// Connect to a server
	/// @param _Host : URL of server
	void WorldSocket::Connect(IpAddress & _Host)
	{
		pRemoteHost = _Host;
		pSocket.async_connect(_Host.GetEndPoint(), boost::bind(&WorldSocket::Async_Connect, this, boost::asio::placeholders::error));		
	}
	/// Listen on a port
	/// @param _Port : Port to listen
	void WorldSocket::Listen(const int &  _Port)
	{
		boost::system::error_code _Error;
 
		pListenSocket = new boost::asio::ip::tcp::acceptor(Base::Service::GetSingleton()->GetIoService(), boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), _Port));
 
		pPendingClient = new WorldSocket();
		pListenSocket->async_accept(pPendingClient->pSocket, boost::bind(&WorldSocket::Async_Accept, this, boost::asio::placeholders::error));
 
		pIsServer = true;
	}
	/// Disconnect to server
	void WorldSocket::Disconnect()
	{
		if (pIsConnected == true)
		{
			pSocket.close();
		}
		else if (pIsServer == true)
		{
			pListenSocket->close();
		}
	}
 
	// ============================================================================================ //
 
	/// Send a packet
	/// @param _Packet : Packet to send
	void WorldSocket::Send(Packet * _Packet)
	{
		std::string								_OutboundHeader;
		std::string								_OutboundData;
		std::vector<boost::asio::const_buffer>	_Buffers;
		std::ostringstream						_HeaderStream;
 
		_HeaderStream << std::setw(8) << std::hex <<  _Packet->GetDataSize();
		if (!_HeaderStream || _HeaderStream.str().size() != 8)
		{
			return ;
		}
 
		_OutboundHeader = _HeaderStream.str();
		_OutboundData	= _Packet->GetData();
 
		_Buffers.push_back(boost::asio::buffer(_OutboundHeader));
		_Buffers.push_back(boost::asio::buffer((void*)_Packet->GetData(), _Packet->GetDataSize()));
 
		pSocket.async_send(_Buffers, boost::bind(&WorldSocket::Async_Send, this, boost::asio::placeholders::error));
	}
	/// Recv a packet
	/// @return Packet
	Packet WorldSocket::Receive()
	{
		if (pPacketQueue.empty() == true)
			return Packet();
 
		pPacketQueueMutex.lock();
		Packet _Received = pPacketQueue.front();
		pPacketQueue.pop();
		pPacketQueueMutex.unlock();
 
		return _Received;
	}
	/// Release a Network packer
	/// @param _Packet : Packet to release
	void WorldSocket::ReleasePacket(Packet & _Packet)
	{
 
	}
 
	// ============================================================================================ //
 
	/// Set the socket handler
	/// @param Handler : New socket functions handler
	void WorldSocket::SetSocketHandler(SocketHandler * _Handler)
	{
		this->pHandler = _Handler;
	}
 
	// ============================================================================================ //
 
	/// Get the socket handler
	/// @return The current socket handler
	SocketHandler * WorldSocket::GetSocketHandler()
	{
		return this->pHandler;
	}
 
	// ============================================================================================ //
 
	/// Async connect handle
	void WorldSocket::Async_Connect(const boost::system::error_code& _Error)
	{
		Packet _Tmp;
 
		if (!_Error)
		{
			pIsConnected = true;
 
			_Tmp << OpCode(OPCODE_CONNECTION_REQUEST_ACCEPTED); 
			Logger::GetSingleton()->sLog("WorldSocket", "Connection request accepted to : %s:%d", pRemoteHost.GetEndPoint().address().to_string().c_str(), pRemoteHost.GetEndPoint().port());
 
			if (pHandler)
				pHandler->SocketHandle_ConnectionRequestAccepted(this);
 
			StartRecursiveReceive();
		}
		else
		{
			pIsConnected = false;
 
			_Tmp << OpCode(OPCODE_CONNECTION_REQUEST_FAILED); 
			Logger::GetSingleton()->sLog("WorldSocket", "Connection request failed to : %s:%d", pRemoteHost.GetEndPoint().address().to_string().c_str(), pRemoteHost.GetEndPoint().port());	
 
			if (pHandler)
				pHandler->SocketHandle_ConnectionRequestFailed(this);	
		}
	}
	/// Async accept handle
	void WorldSocket::Async_Accept(const boost::system::error_code& _Error)
	{
		Packet _Tmp;
 
		if (!_Error)
		{
			if (pListenOnceCheck == false)
			{
				Logger::GetSingleton()->sLog("WorldSocket", "Listen start");
 
				pListenOnceCheck = true;
 
				if (pHandler)
					pHandler->SocketHandle_ListenStart(this);
			}
 
			Logger::GetSingleton()->sLog("WorldSocket", "New client : %s:%d", pPendingClient->pSocket.remote_endpoint().address().to_string().c_str(), pPendingClient->pSocket.remote_endpoint().port());
 
			pPendingClient->pIsConnected	= true;
			pPendingClient->StartRecursiveReceive();
 
			if (pHandler)
				pHandler->SocketHandle_NewClient(this, pPendingClient);
		}
		else
		{
			if (pListenOnceCheck == false)
			{
				Logger::GetSingleton()->eLog("WorldSocket", "Listen error");
 
				pListenOnceCheck = true;
 
				if (pHandler)
					pHandler->SocketHandle_ListenError(this);	
			}
 
			Logger::GetSingleton()->eLog("WorldSocket", "New client accept failed");
 
			if (pHandler)
				pHandler->SocketHandle_NewClientAcceptError(this);
		}
 
		pPendingClient = new WorldSocket();
		pListenSocket->async_accept(pPendingClient->pSocket, boost::bind(&WorldSocket::Async_Accept, this, boost::asio::placeholders::error));
	}
	/// Async send handle
	void WorldSocket::Async_Send(const boost::system::error_code& _Error)
	{
		if (_Error)
		{
			Logger::GetSingleton()->eLog("WorldSocket", "Send packet failed");
 
			Disconnect();
 
			if (pHandler)	
				pHandler->SocketHandle_ConnectionLostedOrDisconnected(this);
		}
	}
	/// Async receive handle
	void WorldSocket::Async_Receive(const boost::system::error_code& _Error, size_t _Received)
	{
		if (!_Error)
		{
			std::istringstream _Is(std::string(pInboundTcpHeader, 8));
			pInboundTcpSize = 0;
 
			if (!(_Is >> std::hex >> pInboundTcpSize))
			{
				return;
			}
 
			pInboundTcpData.resize(pInboundTcpSize);
 
			boost::asio::async_read(pSocket, boost::asio::buffer(pInboundTcpData), boost::bind(&WorldSocket::Async_ReceiveData, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));			
		}
		else
		{
			Logger::GetSingleton()->eLog("WorldSocket", "Receive packet failed");
 
			Disconnect();
 
			if (pHandler)		
				pHandler->SocketHandle_ConnectionLostedOrDisconnected(this);
		}
	}
	/// Async receive handle
	void WorldSocket::Async_ReceiveData(const boost::system::error_code& _Error, size_t _Received)
	{
		if (!_Error)
		{
			Packet _Packet;
			_Packet.Append(&pInboundTcpData[0], pInboundTcpData.size());
 
			pPacketQueueMutex.lock();
			pPacketQueue.push(_Packet);
			pPacketQueueMutex.unlock();
 
			if(pHandler)
				pHandler->SocketHandle_ReceivePacket(this);	
 
			if (pIsConnected == true)
				StartRecursiveReceive();
		}
		else
		{
			Logger::GetSingleton()->eLog("WorldSocket", "Receive packet failed");
 
			Disconnect();
 
			if (pHandler)		
				pHandler->SocketHandle_ConnectionLostedOrDisconnected(this);
		}
	}
 
	// ============================================================================================ //
 
	/// Process a internal packet
	/// @param _Packet : packet to process
	void WorldSocket::InternalPacket(Packet * _Packet)
	{
 
	}
	/// Loop of async_recv
	void WorldSocket::StartRecursiveReceive()
	{
		if (pIsConnected == true)
			boost::asio::async_read(pSocket, boost::asio::buffer(pInboundTcpHeader), boost::bind(&WorldSocket::Async_Receive, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
	}
 
}	// Network
}	// SDK
}	// Akhynia | 
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