tcp通信程序c++
时间: 2024-06-14 19:04:33 浏览: 16
以下是一个简单的C++ TCP通信程序的示例:
```cpp
#include <iostream>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib")
int main() {
// 初始化Winsock
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
std::cout << "Failed to initialize winsock" << std::endl;
return 1;
}
// 创建套接字
SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, 0);
if (serverSocket == INVALID_SOCKET) {
std::cout << "Failed to create socket" << std::endl;
WSACleanup();
return 1;
}
// 设置服务器地址和端口
sockaddr_in serverAddress;
serverAddress.sin_family = AF_INET;
serverAddress.sin_addr.s_addr = INADDR_ANY;
serverAddress.sin_port = htons(8888);
// 绑定套接字
if (bind(serverSocket, (struct sockaddr*)&serverAddress, sizeof(serverAddress)) == SOCKET_ERROR) {
std::cout << "Failed to bind socket" << std::endl;
closesocket(serverSocket);
WSACleanup();
return 1;
}
// 监听连接请求
if (listen(serverSocket, SOMAXCONN) == SOCKET_ERROR) {
std::cout << "Failed to listen on socket" << std::endl;
closesocket(serverSocket);
WSACleanup();
return 1;
}
std::cout << "Server started, waiting for connections..." << std::endl;
// 接受连接请求
SOCKET clientSocket;
sockaddr_in clientAddress;
int clientAddressSize = sizeof(clientAddress);
clientSocket = accept(serverSocket, (struct sockaddr*)&clientAddress, &clientAddressSize);
if (clientSocket == INVALID_SOCKET) {
std::cout << "Failed to accept connection" << std::endl;
closesocket(serverSocket);
WSACleanup();
return 1;
}
std::cout << "Client connected" << std::endl;
// 接收和发送数据
char buffer[1024];
while (true) {
memset(buffer, 0, sizeof(buffer));
int bytesRead = recv(clientSocket, buffer, sizeof(buffer), 0);
if (bytesRead <= 0) {
std::cout << "Connection closed by client" << std::endl;
break;
}
std::cout << "Received: " << buffer << std::endl;
std::string response = "Hello from server";
send(clientSocket, response.c_str(), response.length(), 0);
}
// 关闭套接字和清理Winsock
closesocket(clientSocket);
closesocket(serverSocket);
WSACleanup();
return 0;
}
```
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