Lianja

Get Current Date/Time from NIST Time Server

See more Socket/SSL/TLS Examples

Demonstrates using Chilkat Socket to connect to an NIST time server and (using the old Time Protocol (RFC 868)), will read the current GMT time.

Note: This is not necessarily the very best means for getting the current date/time. The most commonly used time protocol is the Network Time Protocol (RFC-1305).

Lianja

llSuccess = .F.

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loSocket = createobject("CkSocket")

// Connect to an NIST time server and read the current date/time
lnMaxWaitMs = 4000
llUseTls = .F.
llSuccess = loSocket.Connect("time-c.nist.gov",37,llUseTls,lnMaxWaitMs)
if (llSuccess <> .T.) then
    ? loSocket.LastErrorText
    release loSocket
    return
endif

// The time server will send a big-endian 32-bit integer representing
// the number of seconds since since 00:00 (midnight) 1 January 1900 GMT.
// The ReceiveInt32 method will receive a 4-byte integer, but returns
// .T. or .F. to indicate success.  If successful, the integer
// is obtained via the ReceivedInt property.
llBigEndian = .T.
llSuccess = loSocket.ReceiveInt32(llBigEndian)
if (llSuccess <> .T.) then
    ? loSocket.LastErrorText
    release loSocket
    return
endif

loDt = createobject("CkDateTime")
loDt.SetFromNtpTime(loSocket.ReceivedInt)

// Show the current local date/time
llBLocalTime = .T.
? "Current local date/time: " + loDt.GetAsRfc822(llBLocalTime)

lnMaxWaitMs = 10
loSocket.Close(lnMaxWaitMs)


release loSocket
release loDt