Shulou(Shulou.com)05/31 Report--

Today, the editor will share with you the relevant knowledge points on how to judge whether the host is connected to the network in C++. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.

The specific code is as follows

# include#include # pragma comment (lib, "ws2_32.lib") # define LEN 1024 / / receive data size using namespace std; int main () {/ / load socket library WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD (1,1); / / initialize Socket dynamic link library, request version 1.1 winsocket library err = WSAStartup (wVersionRequested, & wsaData); if (err! = 0) {return 0 } if (LOBYTE (wsaData.wVersion)! = 1 | | / determine whether the requested winsocket is version 1.1 HIBYTE (wsaData.wVersion)! = 1) {WSACleanup (); / / liquidate return 0; / / terminate the use of winsocket} / / WSADATA ws; / / WSAStartup (MAKEWORD (2jue 2), & ws); / / char http [60] = "www.google.com" / / visit the Google web page SOCKET sock = socket (AF_INET,SOCK_STREAM,0); / / create a socket if (sock = = INVALID_SOCKET) {cout

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