If you want to get server time to check something in your application. This tips is for C# developer.
Condition: your applications much connect to internet
Check below code!
public static DateTime GetNISTDate()
{
Random ran = new Random(DateTime.Now.Millisecond);
DateTime date = GetDummyDate();
string serverResponse = string.Empty;
// Represents the list of NIST servers
string[] servers = new string[] {
"nist1-ny.ustiming.org",
"time-a.nist.gov",
"nist1-chi.ustiming.org",
"time.nist.gov",
"ntp-nist.ldsbc.edu",
"nist1-la.ustiming.org"
};
// Try each server in random order to avoid blocked requests due to too frequent request
for (int i = 0; i < 5; i++)
{
try
{
// Open a StreamReader to a random time server
StreamReader reader = new StreamReader(new System.Net.Sockets.TcpClient(servers[ran.Next(0, servers.Length)], 13).GetStream());
serverResponse = reader.ReadToEnd();
reader.Close();
// Check to see that the signature is there
if (serverResponse.Length > 47 && serverResponse.Substring(38, 9).Equals("UTC(NIST)"))
{
// Parse the date
int jd = int.Parse(serverResponse.Substring(1, 5));
int yr = int.Parse(serverResponse.Substring(7, 2));
int mo = int.Parse(serverResponse.Substring(10, 2));
int dy = int.Parse(serverResponse.Substring(13, 2));
int hr = int.Parse(serverResponse.Substring(16, 2));
int mm = int.Parse(serverResponse.Substring(19, 2));
int sc = int.Parse(serverResponse.Substring(22, 2));
if (jd > 51544)
yr += 2000;
else
yr += 1999;
return new DateTime(yr, mo, dy, hr, mm, sc);
}
}
catch {
/* Do Nothing...try the next server */
}
}
return date;
}
Any feedback leave your comment, we can discuss about it!
Reference for C++ Developer:
https://learn-tech-tips.blogspot.com/2015/08/get-server-time-in-c-plus-plus.html
Zidane