C++怎么實(shí)現(xiàn)iocp進(jìn)行SOCKET通信

要使用IOCP（I/O Completion Ports）來實(shí)現(xiàn)C++中的Socket通信，可以按照以下步驟進(jìn)行操作：

1. 創(chuàng)建一個(gè)IOCP對象：

HANDLE hIOCP = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 0);

2. 創(chuàng)建Socket并綁定到IOCP對象上：

SOCKET sock = socket(AF_INET, SOCK_STREAM, 0);
bind(sock, (SOCKADDR*)&addr, sizeof(addr));
CreateIoCompletionPort((HANDLE)sock, hIOCP, (ULONG_PTR)sock, 0);

3. 使用WSARecv或WSASend函數(shù)進(jìn)行數(shù)據(jù)的接收和發(fā)送：

WSABUF wsaBuf;
wsaBuf.buf = // 緩沖區(qū)指針
wsaBuf.len = // 緩沖區(qū)長度

DWORD bytesTransferred = 0;
DWORD flags = 0;
OVERLAPPED* pOverlapped = nullptr;

WSARecv(sock, &wsaBuf, 1, &bytesTransferred, &flags, pOverlapped, nullptr);

4. 創(chuàng)建一個(gè)線程用于接收完成包：

DWORD WINAPI WorkerThread(LPVOID lpParam) {
    while (true) {
        DWORD bytesTransferred = 0;
        ULONG_PTR completionKey = 0;
        LPOVERLAPPED lpOverlapped = nullptr;

        GetQueuedCompletionStatus(hIOCP, &bytesTransferred, &completionKey, &lpOverlapped, INFINITE);

        // 處理接收到的數(shù)據(jù)

        // 重新投遞接收請求
        WSARecv(sock, &wsaBuf, 1, &bytesTransferred, &flags, pOverlapped, nullptr);
    }

    return 0;
}

5. 創(chuàng)建多個(gè)工作線程來處理IOCP中的完成包：

for (int i = 0; i < numThreads; ++i) {
    HANDLE hThread = CreateThread(NULL, 0, WorkerThread, NULL, 0, NULL);
    CloseHandle(hThread);
}

通過以上步驟，就可以使用IOCP來進(jìn)行Socket通信了。注意，這只是一個(gè)基本示例，實(shí)際使用時(shí)可能需要根據(jù)具體需求進(jìn)行調(diào)整和擴(kuò)展。