功能
实现基于sokcet的Cpp服务端
TIPS：功能包括接收客户端的数据，向客户端发送数据。
源码
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#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <iostream>
//#include <windows.h>
#include <WinSock2.h>
#pragma comment(lib,"ws2_32")
using std::cout;
using std::endl;
using std::cin;
int main()
{
system("chcp 65001");
//SetConsoleOutputCP(65001);
WSADATA wsaData;
WSAStartup(MAKEWORD(2, 2), &wsaData);//启动window动态网络库
//1.创建socket
//SOCKET == 句柄 == 文件描述符 == 套接字
//socket(协议族类型,协议类型,0);
//协议族类型 IPV4（AF_INET） IPV6
//协议类型 TCP（SOCK_STREAM)，UDP(SOCK_DROP)
SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, 0);//IPPROTO_TCP
if (serverSocket == INVALID_SOCKET)
{
cout << "创建socket失败" << endl;
return 0;
}
//2.绑定ip和端口号
//127.0.0.1 永远指向本机
//0.0.0.o 绑定所有网卡的ip
SOCKADDR_IN serverAddr;
serverAddr.sin_family = AF_INET;
serverAddr.sin_port = htons(7890);//host to networks short，将主机字节序转化为网络字节序
serverAddr.sin_addr.s_addr = inet_addr("127.0.0.1");//点分十进制转换为10进制
if (SOCKET_ERROR == bind(serverSocket, (sockaddr *)&serverAddr, sizeof(SOCKADDR_IN)))
{
cout << "bind 失败" << endl;
return 0;
}
cout << "bind 成功" << endl;
//3.监听，提示本机的操作系统
if (INVALID_SOCKET == listen(serverSocket, 5))
{
cout << "listen 失败" << endl;
return 0;
}
cout << "listen 成功" << endl;
while(true)
{
//4.等待客户端连接
SOCKADDR_IN clientAddr;
int addrLen = sizeof(SOCKADDR_IN);
SOCKET clientSocket = accept(serverSocket, (SOCKADDR *)&clientAddr, &addrLen);
if (INVALID_SOCKET == clientSocket)
{
cout << "客户端连接失败 " << endl;
return 0;
}
cout << "client ok " << inet_ntoa(clientAddr.sin_addr) << endl;
cout << "port " << ntohs(clientAddr.sin_port) << endl;
//5.收发数据
//接收数据
char recvBuffer[1024]{ 0 };
int nRecv = recv(clientSocket, recvBuffer, 1024, 0);
cout << "recvLen:" << nRecv << "内容:" << recvBuffer << endl;
//发送数据
int nSend = send(clientSocket, recvBuffer, nRecv, 0);
cout << "send Len:" << nSend << endl;
//6.关闭客户端
closesocket(clientSocket);
}
//7.关闭服务端
closesocket(serverSocket);
WSACleanup();//卸载window动态网络库
return 0;
}
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效果
TIPS：利用sokit模拟工具模拟一个客户端终端。
总结
本篇文章就到这里了，希望能够给你带来帮助，也希望您能够多多关注服务器之家的更多内容!
原文链接：https://blog.csdn.net/qq135595696/article/details/121076451