文章作者:里海
来源网站:https://blog.csdn.net/WangPaiFeiXingYuan
简介:
使用socket判断ip是否能联通
效果:
代码:
cpp
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <winsock2.h>
#include <string>
#include <chrono>
#pragma comment(lib, "ws2_32.lib")
using namespace std;
bool canConnectToRouter(string ipAddress)
{
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) // 初始化Windows Socket库
return false;
int sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); // 创建一个TCP socket
if (sockfd < 0)
return false;
struct sockaddr_in serveraddr;
serveraddr.sin_addr.s_addr = inet_addr(ipAddress.c_str());
serveraddr.sin_family = AF_INET;
serveraddr.sin_port = htons(139);
int ret = connect(sockfd, (struct sockaddr*)&serveraddr, sizeof(serveraddr)); // 连接服务器
if (ret < 0)
{
closesocket(sockfd);
return false;
}
closesocket(sockfd);
return true;
}
int main()
{
for (int i = 0; i < 256; i++)
{
string ip = "192.168.16." + to_string(i);
std::cout << ip << "\t";
auto start = chrono::steady_clock::now(); // 记录开始时间
if (canConnectToRouter(ip.c_str()))
std::cout << "InCompany\t";
else
std::cout << "NotInCompany\t";
auto end = chrono::steady_clock::now(); // 记录结束时间
auto duration = chrono::duration_cast<chrono::milliseconds>(end - start); // 计算执行时间,单位为毫秒
cout << "耗时:" << duration.count() << "毫秒" << endl;
}
cin.get();
}