756 lines
18 KiB
C++
756 lines
18 KiB
C++
//////////////////////////////////////
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// Created by Pontus Fransson 2013 //
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// Modified by Dennis Andersen 2014 //
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//////////////////////////////////////
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#ifndef INCLUDE_WINSOCK_LIB
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#define INCLUDE_WINSOCK_LIB
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#pragma comment(lib, "ws2_32.lib")
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#endif
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#include "NetworkClient.h"
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#include "Translator.h"
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#include "CustomNetProtocol.h"
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#include "NetworkSession.h"
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#include "../NetworkDependencies/ConnectionUDP.h"
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#include "../NetworkDependencies/Connection.h"
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#include "../NetworkDependencies/PostBox.h"
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#include "../NetworkDependencies/WinsockFunctions.h"
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#include "Utilities.h"
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#include "Thread/IThreadObject.h"
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#include "Thread/OysterThread.h"
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#include "Packing/Packing.h"
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#include <queue>
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#include <WinSock2.h>
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#include <thread>
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//For conversion from wstring to string
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#include <codecvt>
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using namespace Oyster::Network;
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using namespace Oyster::Thread;
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using namespace Utility::DynamicMemory;
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using namespace Utility::Container;
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using namespace std;
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/*************************************
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PrivateData
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*************************************/
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typedef NetworkClient::ClientEventArgs CEA;
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void OnRecieve_Default(NetEvent<NetworkClient*, NetworkClient::ClientEventArgs> e) {}
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struct NetworkClient::PrivateData : public IThreadObject
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{
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NetworkSession *owner;
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NetworkClient *parent;
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Connection connection;
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Translator translator;
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OysterThread thread;
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bool outputEvent;
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OysterByte recieveBuffer;
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//Message queue for sending and recieving
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ThreadSafeQueue<CustomNetProtocol> sendQueue;
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ThreadSafeQueue<NetEvent<NetworkClient*, NetworkClient::ClientEventArgs>> recieveQueue;
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//Testing for eventSelect.
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HANDLE socketEvents[2];
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HANDLE shutdownEvent;
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//Broadcasting
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bool broadcastingStarted;
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HANDLE broadcastEvent;
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HANDLE broadcastShutdownEvent;
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std::thread broadcastThread;
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ConnectionUDP broadcastConnection;
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OysterByte broadcastTempMessage;
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Translator broadcastTranslator;
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//The OysterByte each message is packed in.
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OysterByte tempMessage;
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//Used to buffer messages
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OysterByte bufferedSend;
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int numPackages;
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//ID
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static unsigned int currID;
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const unsigned int ID;
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PrivateData()
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: ID(currID++)
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, parent(0)
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, owner(0)
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, outputEvent(0)
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{
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broadcastingStarted = false;
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numPackages = 0;
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bufferedSend.Resize(MAX_NETWORK_MESSAGE_SIZE);
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tempMessage.Resize(MAX_NETWORK_MESSAGE_SIZE);
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InitWinSock();
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this->thread.Create(this, false);
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this->thread.SetPriority(Oyster::Thread::OYSTER_THREAD_PRIORITY_1);
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}
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~PrivateData()
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{
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SetEvent(shutdownEvent);
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this->thread.Wait();
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ShutdownWinSock();
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this->connection.Disconnect();
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this->owner = 0;
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this->parent = 0;
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}
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void ThreadEntry()
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{
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//Create alla events used in the thread
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shutdownEvent = CreateEvent(NULL, true, false, NULL);
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socketEvents[0] = WSACreateEvent();
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socketEvents[1] = WSACreateEvent();
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if(socketEvents[0] == WSA_INVALID_EVENT)
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{
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//Error
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}
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if(WSAEventSelect(this->connection.GetSocket(), socketEvents[0], FD_READ) == SOCKET_ERROR)
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{
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//Error
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}
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}
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void ThreadExit()
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{
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WSACloseEvent(socketEvents[0]);
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WSACloseEvent(socketEvents[1]);
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CloseHandle(shutdownEvent);
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}
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//Thread for receiving broadcast messages
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void BroadcastThread()
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{
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WSANETWORKEVENTS wsaEvents;
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while(WaitForSingleObject(broadcastShutdownEvent, 0) != WAIT_OBJECT_0)
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{
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int result = WSAWaitForMultipleEvents(1, &broadcastEvent, FALSE, 100, FALSE) - WSA_WAIT_EVENT_0;
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if(result == 0)
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{
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WSAEnumNetworkEvents(this->broadcastConnection.GetSocket(), broadcastEvent, &wsaEvents);
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if((wsaEvents.lNetworkEvents & FD_READ) && (wsaEvents.iErrorCode[FD_READ_BIT] == 0))
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{
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//Recieve a message
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RecvUDP();
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}
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}
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}
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}
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bool DoWork() override
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{
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WSANETWORKEVENTS wsaEvents;
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while(WaitForSingleObject(shutdownEvent, 0) != WAIT_OBJECT_0)
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{
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if(!this->connection.IsConnected()) return false;
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int result = WSAWaitForMultipleEvents(3, socketEvents, FALSE, 100, FALSE) - WSA_WAIT_EVENT_0;
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if(result == 0)
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{
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WSAEnumNetworkEvents(this->connection.GetSocket(), socketEvents[0], &wsaEvents);
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if((wsaEvents.lNetworkEvents & FD_READ) && (wsaEvents.iErrorCode[FD_READ_BIT] == 0))
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{
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//Recieve a message
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Recv();
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}
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}
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else if(result == 1)
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{
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//Send all messages in the sendQueue
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int i = this->sendQueue.Size();
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WSAResetEvent(socketEvents[1]);
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if(i == 1)
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{
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Send();
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}
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else if(i > 1)
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{
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for(int j = 0; j < i; j++)
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BufferMessage();
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SendBuffer();
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}
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}
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}
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return false;
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}
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void RecvUDP()
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{
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int errorCode = -1;
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errorCode = this->broadcastConnection.Recieve(broadcastTempMessage);
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if(errorCode == 0 && broadcastTempMessage.GetSize())
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{
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CustomNetProtocol protocol;
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bool ok = this->broadcastTranslator.Unpack(protocol, broadcastTempMessage);
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//Check if the protocol was unpacked correctly
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if(ok)
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{
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CEA parg;
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parg.type = CEA::EventType_ProtocolRecieved;
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parg.data.protocol = protocol;
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NetEvent<NetworkClient*, NetworkClient::ClientEventArgs> e;
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e.sender = this->parent;
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e.args.data.protocol = parg.data.protocol;
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e.args.type = parg.type;
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this->recieveQueue.Push(e);
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) Message recieved!\n", this->ID, this->connection.GetIpAddress().c_str(), protocol[0].value.netShort);
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}
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}
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else
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{
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s) Failed to unpack CustomNetProtocol!\n", this->ID, this->connection.GetIpAddress().c_str());
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}
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}
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broadcastTempMessage.Clear();
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}
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}
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void SendBuffer()
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{
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if(bufferedSend.GetSize() > 0)
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{
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this->connection.Send(bufferedSend);
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//printf("2. %d, %d\n", numPackages, bufferedSend.GetSize());
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bufferedSend.Clear();
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//Debug
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numPackages = 0;
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}
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}
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void BufferMessage()
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{
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int errorCode = 0;
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if(!this->sendQueue.IsEmpty())
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{
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CustomNetProtocol p = this->sendQueue.Pop();
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this->translator.Pack(tempMessage, p);
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if(tempMessage.GetSize() > MAX_NETWORK_MESSAGE_SIZE - bufferedSend.GetSize())
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{
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//Send buffered message
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errorCode = this->connection.Send(bufferedSend);
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//printf("2. %d, %d\n", numPackages, bufferedSend.GetSize());
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bufferedSend.Clear();
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//Debug
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numPackages = 0;
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}
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bufferedSend += tempMessage;
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tempMessage.Clear();
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//Debug
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numPackages++;
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if(errorCode != 0 && errorCode != WSAEWOULDBLOCK)
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{
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if( errorCode == WSAECONNABORTED || errorCode == WSAENOTCONN)
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{
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CEA parg;
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parg.type = CEA::EventType_Disconnect;
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parg.data.protocol = p;
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NetEvent<NetworkClient*, CEA> e = { this->parent, parg };
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this->recieveQueue.Push(e);
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) - EventType_Disconnect && EventType_ProtocolFailedToSend \n", this->ID, this->connection.GetIpAddress().c_str(), p[0].value.netShort);
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}
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}
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else
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{
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CEA parg;
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parg.type = CEA::EventType_ProtocolFailedToSend;
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parg.data.protocol = p;
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NetEvent<NetworkClient*, CEA> e = { this->parent, parg };
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this->recieveQueue.Push(e);
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) - EventType_ProtocolFailedToSend\n", this->ID, this->connection.GetIpAddress().c_str(), p[0].value.netShort);
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}
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}
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}
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) Message sent!\n", this->ID, this->connection.GetIpAddress().c_str(), p[0].value.netShort);
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}
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}
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}
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int Send()
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{
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int errorCode = 0;
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if(!this->sendQueue.IsEmpty())
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{
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//printf("\t(%i)\n", this->sendQueue.Size());
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CustomNetProtocol p = this->sendQueue.Pop();
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this->translator.Pack(tempMessage, p);
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errorCode = this->connection.Send(tempMessage);
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tempMessage.Clear();
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if(errorCode != 0 && errorCode != WSAEWOULDBLOCK)
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{
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if( errorCode == WSAECONNABORTED || errorCode == WSAENOTCONN)
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{
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CEA parg;
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parg.type = CEA::EventType_Disconnect;
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parg.data.protocol = p;
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NetEvent<NetworkClient*, CEA> e = { this->parent, parg };
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this->recieveQueue.Push(e);
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) - EventType_Disconnect && EventType_ProtocolFailedToSend \n", this->ID, this->connection.GetIpAddress().c_str(), p[0].value.netShort);
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}
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}
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else
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{
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CEA parg;
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parg.type = CEA::EventType_ProtocolFailedToSend;
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parg.data.protocol = p;
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NetEvent<NetworkClient*, CEA> e = { this->parent, parg };
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this->recieveQueue.Push(e);
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) - EventType_ProtocolFailedToSend\n", this->ID, this->connection.GetIpAddress().c_str(), p[0].value.netShort);
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}
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}
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}
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) Message sent!\n", this->ID, this->connection.GetIpAddress().c_str(), p[0].value.netShort);
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}
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}
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return errorCode;
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}
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int Recv()
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{
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int errorCode = -1;
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errorCode = this->connection.Recieve(tempMessage);
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if(errorCode == 0 && tempMessage.GetSize())
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{
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HandleRecievedData(tempMessage);
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tempMessage.Clear();
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/* Replaced with EmptyOutbufferedQueue() and HandleRecievedData(OysterByte)
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CustomNetProtocol protocol;
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bool ok = this->translator.Unpack(protocol, temp);
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//Check if the protocol was unpacked correctly
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if(ok)
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{
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CEA parg;
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parg.type = CEA::EventType_ProtocolRecieved;
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parg.data.protocol = protocol;
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NetEvent<NetworkClient*, NetworkClient::ClientEventArgs> e = { this->parent, parg };
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this->recieveQueue.Push(e);
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}*/
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}
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//else
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//{
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// CEA parg;
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// parg.type = CEA::EventType_ProtocolFailedToRecieve;
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// parg.data.nothing = 0;
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// NetEvent<NetworkClient*, NetworkClient::ClientEventArgs> e = { this->parent, parg };
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// this->recieveQueue.Push(e);
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//}
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return errorCode;
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}
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void HandleRecievedData(OysterByte& data)
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{
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//Loop through all packages that was recieved and add them to the queue.
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unsigned int size = 0;
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Oyster::Network::OysterByte msg;
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//If there is part of a message in the buffer.
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if(recieveBuffer.GetSize() > 0)
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{
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//cout << "the buffer size: " << recvBuffer.GetSize() <<endl;
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unsigned int temp = recieveBuffer.GetSize();
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size = Oyster::Packing::Unpacki(recieveBuffer);
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if(temp + data.GetSize() > size)
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{
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msg = recieveBuffer;
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recieveBuffer.Clear();
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size -= msg.GetSize();
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msg.AppendPartOfArray(data, 0, size);
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UnpackMessageAndAddToQueue(msg);
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}
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else if(temp + data.GetSize() == size)
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{
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msg = recieveBuffer;
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recieveBuffer.Clear();
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size -= msg.GetSize();
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msg += data;
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UnpackMessageAndAddToQueue(msg);
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return;
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}
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else
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{
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recieveBuffer += data;
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size = data.GetSize();
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return;
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}
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}
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for(unsigned int i = size; i < data.GetSize(); i += size)
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{
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size = Oyster::Packing::Unpacki(&data.GetByteArray()[i]);
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if(i+size > data.GetSize())
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{
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//Add it to the recvBuffer instead.
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recieveBuffer.AppendPartOfArray(data, i, data.GetSize());
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break;
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}
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msg.Clear();
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msg.AppendPartOfArray(data, i, i+size);
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UnpackMessageAndAddToQueue(msg);
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}
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}
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void UnpackMessageAndAddToQueue(OysterByte& msg)
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{
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CustomNetProtocol protocol;
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bool ok = this->translator.Unpack(protocol, msg);
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//Check if the protocol was unpacked correctly
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if(ok)
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{
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CEA parg;
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parg.type = CEA::EventType_ProtocolRecieved;
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parg.data.protocol = protocol;
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NetEvent<NetworkClient*, NetworkClient::ClientEventArgs> e;
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e.sender = this->parent;
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e.args.data.protocol = parg.data.protocol;
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e.args.type = parg.type;
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this->recieveQueue.Push(e);
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s | Protocol: %i) Message recieved!\n", this->ID, this->connection.GetIpAddress().c_str(), protocol[0].value.netShort);
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}
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}
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else
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{
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if(this->outputEvent)
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{
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printf("\t(ID: %i | IP: %s) Failed to unpack CustomNetProtocol!\n", this->ID, this->connection.GetIpAddress().c_str());
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}
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}
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}
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};
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unsigned int NetworkClient::PrivateData::currID = 0;
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/*************************************
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NetworkClient
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*************************************/
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NetworkClient::NetworkClient()
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: privateData(nullptr),
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OnRecieve(OnRecieve_Default)
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{ }
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NetworkClient::~NetworkClient()
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{
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if(this->privateData)
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{
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delete this->privateData;
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this->privateData = NULL;
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}
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}
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bool NetworkClient::operator ==(const NetworkClient& obj)
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{
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return (this->privateData->ID == obj.privateData->ID);
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}
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bool NetworkClient::operator ==(const int& ID)
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{
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return this->privateData->ID == ID;
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}
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void NetworkClient::Update()
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{
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while ( this->privateData && !this->privateData->recieveQueue.IsEmpty())
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{
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NetEvent<NetworkClient*, ClientEventArgs> temp = this->privateData->recieveQueue.Pop();
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this->DataRecieved(temp);
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}
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}
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bool NetworkClient::Connect(ConnectionInfo& socket)
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{
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if(this->privateData) return false;
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if(!this->privateData) this->privateData = new PrivateData();
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if(this->IsConnected()) return true;
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int result = this->privateData->connection.Connect(socket, true);
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//Connect has succeeded
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if(result != 0) return false;
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this->privateData->parent = this;
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this->privateData->thread.Start();
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//Connect has failed
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return true;
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}
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bool NetworkClient::Connect(unsigned short port, const char serverIP[])
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{
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if(!this->privateData)
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this->privateData = new PrivateData();
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//Return true if you are already connected.
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if(this->IsConnected())
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return true;
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int result = this->privateData->connection.Connect(port, serverIP, true);
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//Connect has succeeded
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if(result != 0) return false;
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this->privateData->owner = 0;
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this->privateData->parent = this;
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this->privateData->thread.Start();
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//Connect has failed
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return true;
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}
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bool NetworkClient::Connect(unsigned short port, std::wstring serverIP)
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{
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//Convert from wstring to string.
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typedef std::codecvt_utf8<wchar_t> convert_typeX;
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std::wstring_convert<convert_typeX, wchar_t> converterX;
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std::string ip = converterX.to_bytes(serverIP);
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return this->Connect(port, ip.c_str());
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}
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bool NetworkClient::Reconnect()
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{
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if(!this->privateData)
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this->privateData = new PrivateData();
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//Return true if you are already connected.
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if(this->IsConnected())
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return true;
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int result = this->privateData->connection.Reconnect();
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if(result != 0)
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{
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return false;
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}
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this->privateData->owner = 0;
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this->privateData->parent = this;
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this->privateData->thread.Start();
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return true;
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}
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void NetworkClient::Disconnect()
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{
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if(!privateData) return;
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delete this->privateData;
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this->privateData = 0;
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}
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void NetworkClient::Send(CustomProtocolObject& protocol)
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{
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this->privateData->sendQueue.Push(protocol.GetProtocol());
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WSASetEvent(this->privateData->socketEvents[1]);
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}
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void NetworkClient::Send(CustomNetProtocol& protocol)
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{
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this->privateData->sendQueue.Push(protocol);
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WSASetEvent(this->privateData->socketEvents[1]);
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}
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void NetworkClient::SetOwner(NetworkSession* owner)
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{
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this->privateData->owner = owner;
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}
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void NetworkClient::SetMessagePump( NetworkClient::ClientEventFunction func )
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{
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if( func )
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{
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this->OnRecieve = func;
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}
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else
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{
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this->OnRecieve = OnRecieve_Default;
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}
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}
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bool NetworkClient::IsConnected()
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{
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if(!this->privateData) return false;
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return privateData->connection.IsConnected();
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}
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int NetworkClient::GetID() const
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{
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if(!this->privateData) return false;
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return this->privateData->ID;
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}
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void NetworkClient::DataRecieved(NetEvent<NetworkClient*, ClientEventArgs> e)
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{
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if(this->privateData->owner)
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{
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this->privateData->owner->ClientEventCallback(e);
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}
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else
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{
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this->OnRecieve( e );
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}
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}
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std::string NetworkClient::GetIpAddress()
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{
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return this->privateData->connection.GetIpAddress();
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}
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void NetworkClient::OutputEventData(bool output)
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{
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this->privateData->outputEvent;
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}
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bool NetworkClient::StartListeningForBroadcasting(unsigned short port)
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{
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//Create privateData if it doesn't exists.
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if(this->privateData == NULL)
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{
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privateData = new PrivateData;
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}
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//Initiate broadcasting only if it's not started.
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if(!this->privateData->broadcastingStarted)
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{
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//Create UDP connection
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int result = this->privateData->broadcastConnection.InitiateBroadcastClient(port);
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if(result)
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{
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return false;
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}
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//Create event for closing the thread.
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this->privateData->broadcastShutdownEvent = CreateEvent(NULL, true, false, NULL);
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if(this->privateData->broadcastShutdownEvent == NULL)
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{
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this->privateData->broadcastConnection.Disconnect();
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return false;
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}
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//Creating event for broadcast messages on the UDP connection.
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this->privateData->broadcastEvent = WSACreateEvent();
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if(this->privateData->broadcastEvent == WSA_INVALID_EVENT)
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{
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this->privateData->broadcastConnection.Disconnect();
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CloseHandle(this->privateData->broadcastShutdownEvent);
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return false;
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}
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//Set the event for only Receiving.
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if(WSAEventSelect(this->privateData->broadcastConnection.GetSocket(), this->privateData->broadcastEvent, FD_READ) == SOCKET_ERROR)
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{
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this->privateData->broadcastConnection.Disconnect();
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CloseHandle(this->privateData->broadcastShutdownEvent);
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WSACloseEvent(this->privateData->broadcastEvent);
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return false;
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}
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//Start thread receiving broadcast messages.
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this->privateData->broadcastThread = thread(&PrivateData::BroadcastThread, this->privateData);
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if(!this->privateData->broadcastThread.joinable())
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{
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this->privateData->broadcastConnection.Disconnect();
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CloseHandle(this->privateData->broadcastShutdownEvent);
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WSACloseEvent(this->privateData->broadcastEvent);
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return false;
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}
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this->privateData->broadcastingStarted = true;
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}
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return true;
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}
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void NetworkClient::StopListeningForBroadcasting()
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{
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if(this->privateData)
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{
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if(this->privateData->broadcastingStarted)
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{
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//Tell the thread to shutdown
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WSASetEvent(this->privateData->broadcastShutdownEvent);
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//Wait for thread
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this->privateData->broadcastThread.join();
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WSACloseEvent(this->privateData->broadcastEvent);
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CloseHandle(this->privateData->broadcastShutdownEvent);
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this->privateData->broadcastConnection.Disconnect();
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this->privateData->broadcastingStarted = false;
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}
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}
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}
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