windows进程通信socket源代码

以下是一个简单的 Windows 进程间通信的示例，使用了 socket 进行通信。其中，一个进程作为服务端，另一个进程作为客户端，通过 socket 进行通信。

服务端代码：

#include <winsock2.h>
#include <iostream>

#pragma comment(lib, "ws2_32.lib")

using namespace std;

int main()
{
    // 初始化 Winsock
    WSADATA wsaData;
    int iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (iResult != 0) {
        cout << "WSAStartup failed: " << iResult << endl;
        return 1;
    }

    // 创建 socket
    SOCKET listenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (listenSocket == INVALID_SOCKET) {
        cout << "Error at socket(): " << WSAGetLastError() << endl;
        WSACleanup();
        return 1;
    }

    // 绑定 socket
    sockaddr_in service;
    service.sin_family = AF_INET;
    service.sin_addr.s_addr = INADDR_ANY;
    service.sin_port = htons(27015);

    iResult = bind(listenSocket, (SOCKADDR*)&service, sizeof(service));
    if (iResult == SOCKET_ERROR) {
        cout << "bind failed with error: " << WSAGetLastError() << endl;
        closesocket(listenSocket);
        WSACleanup();
        return 1;
    }

    // 监听 socket
    if (listen(listenSocket, 1) == SOCKET_ERROR) {
        cout << "listen failed with error: " << WSAGetLastError() << endl;
        closesocket(listenSocket);
        WSACleanup();
        return 1;
    }

    // 等待客户端连接
    cout << "Waiting for client to connect..." << endl;

    SOCKET clientSocket = INVALID_SOCKET;
    while (clientSocket == INVALID_SOCKET) {
        clientSocket = accept(listenSocket, NULL, NULL);
    }

    // 客户端已连接
    cout << "Client connected." << endl;

    // 发送数据到客户端
    const char* sendData = "Hello, client!";
    iResult = send(clientSocket, sendData, strlen(sendData), 0);
    if (iResult == SOCKET_ERROR) {
        cout << "send failed with error: " << WSAGetLastError() << endl;
        closesocket(clientSocket);
        WSACleanup();
        return 1;
    }

    // 关闭连接
    closesocket(clientSocket);
    closesocket(listenSocket);
    WSACleanup();

    return 0;
}

客户端代码：

#include <winsock2.h>
#include <iostream>

#pragma comment(lib, "ws2_32.lib")

using namespace std;

int main()
{
    // 初始化 Winsock
    WSADATA wsaData;
    int iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (iResult != 0) {
        cout << "WSAStartup failed: " << iResult << endl;
        return 1;
    }

    // 创建 socket
    SOCKET connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (connectSocket == INVALID_SOCKET) {
        cout << "Error at socket(): " << WSAGetLastError() << endl;
        WSACleanup();
        return 1;
    }

    // 连接到服务端
    sockaddr_in clientService;
    clientService.sin_family = AF_INET;
    clientService.sin_addr.s_addr = inet_addr("127.0.0.1");
    clientService.sin_port = htons(27015);

    iResult = connect(connectSocket, (SOCKADDR*)&clientService, sizeof(clientService));
    if (iResult == SOCKET_ERROR) {
        cout << "Unable to connect to server: " << WSAGetLastError() << endl;
        closesocket(connectSocket);
        WSACleanup();
        return 1;
    }

    // 接收服务端发送的数据
    char recvBuffer[1024];
    iResult = recv(connectSocket, recvBuffer, 1024, 0);
    if (iResult > 0) {
        recvBuffer[iResult] = '\0';
        cout << "Received: " << recvBuffer << endl;
    }
    else if (iResult == 0) {
        cout << "Connection closed." << endl;
    }
    else {
        cout << "recv failed with error: " << WSAGetLastError() << endl;
        closesocket(connectSocket);
        WSACleanup();
        return 1;
    }

    // 关闭连接
    closesocket(connectSocket);
    WSACleanup();

    return 0;
}

上述代码中，服务端使用 `socket` 创建一个监听 socket，并调用 `bind` 绑定到一个指定的 IP 地址和端口上。然后，使用 `listen` 开始监听客户端连接请求。当有客户端连接时，服务端调用 `accept` 接收客户端连接，并使用 `send` 发送数据到客户端。最后，关闭连接。

客户端使用 `socket` 创建一个连接 socket，并调用 `connect` 连接到服务端。然后，使用 `recv` 接收服务端发送的数据。最后，关闭连接。

注意：以上代码仅作为示例，实际应用中还需要考虑安全性、错误处理等问题。