Что-то наподобие программы ping

#include <Winsock2.h>
#include <errno.h>
#include <string>
 
 
enum CONNECTION_STATUS
{
    CONNECTION_STATUS_OK,
    CONNECTION_STATUS_BAD,
    CONNECTION_STATUS_UNKNOWN
};
 
CONNECTION_STATUS GetConnectState(const char* host, int port)
{
    int socket_desc;
    struct sockaddr_in server;
    struct timeval timeout;
 
    socket_desc = socket(AF_INET , SOCK_STREAM , IPPROTO_TCP);
    if (socket_desc == -1)
    {
        puts(strerror(errno));
        return CONNECTION_STATUS_UNKNOWN;
    }
 
    memset(&server, 0, sizeof(struct sockaddr_in));
    server.sin_addr.s_addr = inet_addr(host);
    server.sin_family = AF_INET;
    server.sin_port = htons(port);
    timeout.tv_sec = 5;
    timeout.tv_usec = 0;
    if (setsockopt(socket_desc, SOL_SOCKET, SO_SNDTIMEO, (char*)&timeout, sizeof(timeout)))
    {
        puts(strerror(errno));
        return CONNECTION_STATUS_UNKNOWN;
    }
 
    if (connect(socket_desc , (struct sockaddr *)&server , sizeof(server)) < 0)
    {
        puts(strerror(errno));
        return CONNECTION_STATUS_BAD;
    }
 
    closesocket(socket_desc);
    return CONNECTION_STATUS_OK;
}