SimpleRemoter/client/IOCPKCPClient.cpp

#include "IOCPKCPClient.h"
#include <windows.h>
#include <chrono>
#include <iostream>

IOCPKCPClient::IOCPKCPClient(State& bExit, bool exit_while_disconnect)
    : IOCPUDPClient(bExit, exit_while_disconnect), kcp_(nullptr), running_(false)
{
}

IOCPKCPClient::~IOCPKCPClient()
{
    running_ = false;
    if (updateThread_.joinable())
        updateThread_.join();

    if (kcp_)
        ikcp_release(kcp_);
}

BOOL IOCPKCPClient::ConnectServer(const char* szServerIP, unsigned short uPort)
{
    BOOL ret = IOCPUDPClient::ConnectServer(szServerIP, uPort);
    if (!ret)
        return FALSE;

    // <20><>ʼ<EFBFBD><CABC>KCP
    uint32_t conv = KCP_SESSION_ID; // conv Ҫ<><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƥ<EFBFBD><C6A5>
    kcp_ = ikcp_create(conv, this);
    if (!kcp_)
        return FALSE;

    // <20><><EFBFBD><EFBFBD>KCP<43><50><EFBFBD><EFBFBD>
    ikcp_nodelay(kcp_, 1, 40, 2, 0);
    kcp_->rx_minrto = 30;
    kcp_->snd_wnd = 128;
    kcp_->rcv_wnd = 128;

    // <20><><EFBFBD>÷<EFBFBD><C3B7>ͻص<CDBB><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>KCP<43><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>ã<EFBFBD>
    kcp_->output = IOCPKCPClient::kcpOutput;

    running_ = true;
    updateThread_ = std::thread(&IOCPKCPClient::KCPUpdateLoop, this);
    m_bConnected = TRUE;

    return TRUE;
}

// UDP<44>հ<EFBFBD><D5B0>̵߳<DFB3><CCB5>ã<EFBFBD><C3A3><EFBFBD><EFBFBD>յ<EFBFBD><D5B5><EFBFBD>UDP<44><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD>KCP<43><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٳ<EFBFBD><D9B3>Զ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>Ӧ<EFBFBD>ð<EFBFBD>
int IOCPKCPClient::ReceiveData(char* buffer, int bufSize, int flags)
{
    // <20>ȵ<EFBFBD><C8B5>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>UDPԭʼ<D4AD><CABC><EFBFBD><EFBFBD>
    char udpBuffer[1500] = { 0 };
    int recvLen = IOCPUDPClient::ReceiveData(udpBuffer, sizeof(udpBuffer), flags);
    if (recvLen <= 0)
        return recvLen;

    // <20><><EFBFBD><EFBFBD>KCPЭ<50><D0AD>ջ
    int inputRet = ikcp_input(kcp_, udpBuffer, recvLen);
    if (inputRet < 0)
        return -1;

    // <20><>KCP<43>ж<EFBFBD>ȡӦ<C8A1>ò<EFBFBD><C3B2><EFBFBD><EFBFBD>ݣ<EFBFBD>д<EFBFBD><D0B4>buffer
    int kcpRecvLen = ikcp_recv(kcp_, buffer, bufSize);
    return kcpRecvLen; // >0<><30>ʾ<EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD>0<EFBFBD><30>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}

bool IOCPKCPClient::ProcessRecvData(CBuffer* m_CompressedBuffer, char* szBuffer, int len, int flag)
{
    int iReceivedLength = ReceiveData(szBuffer, len, flag);
    if (iReceivedLength <= 0)
    {}
    else {
        szBuffer[iReceivedLength] = 0;
        //<2F><>ȷ<EFBFBD><C8B7><EFBFBD>վ͵<D5BE><CDB5><EFBFBD>OnRead<61><64><EFBFBD><EFBFBD>,ת<><D7AA>OnRead
        OnServerReceiving(m_CompressedBuffer, szBuffer, iReceivedLength);
    }
    return true;
}

// <20><><EFBFBD><EFBFBD>Ӧ<EFBFBD>ò<EFBFBD><C3B2><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>ã<EFBFBD>ת<EFBFBD><D7AA><EFBFBD><EFBFBD>KCPЭ<50><D0AD>ջ
int IOCPKCPClient::SendTo(const char* buf, int len, int flags)
{
    if (!kcp_)
        return -1;

    int ret = ikcp_send(kcp_, buf, len);
    if (ret < 0)
        return -1;

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>flush<73><68><EFBFBD>ӿ췢<D3BF><ECB7A2>
    ikcp_flush(kcp_);
    return ret;
}

// KCP<43><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݻص<DDBB><D8B5><EFBFBD><EFBFBD><EFBFBD>KCP<43><50><EFBFBD>ɵ<EFBFBD>UDP<44><50><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD>ȥ
int IOCPKCPClient::kcpOutput(const char* buf, int len, struct IKCPCB* kcp, void* user)
{
    IOCPKCPClient* client = reinterpret_cast<IOCPKCPClient*>(user);
    if (client->m_sClientSocket == INVALID_SOCKET)
        return -1;

    int sentLen = sendto(client->m_sClientSocket, buf, len, 0, (sockaddr*)&client->m_ServerAddr, sizeof(client->m_ServerAddr));
    if (sentLen == len)
        return 0;
    else
        return -1;
}

// <20><><EFBFBD><EFBFBD><EFBFBD>̶߳<DFB3>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ikcp_update<74><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD>KCPЭ<50><D0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void IOCPKCPClient::KCPUpdateLoop()
{
    while (running_ && !g_bExit) {
        IUINT32 current = GetTickCount64();
        ikcp_update(kcp_, current);
        std::this_thread::sleep_for(std::chrono::milliseconds(20)); // 20ms<6D><73><EFBFBD>ڣ<EFBFBD><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    }
}