Ruby

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).

Ruby

require 'chilkat'

success = false

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

socket = Chilkat::CkSocket.new()

# Connect to an NIST time server and read the current date/time
maxWaitMs = 4000
useTls = false
success = socket.Connect("time-c.nist.gov",37,useTls,maxWaitMs)
if (success != true)
    print socket.lastErrorText() + "\n";
    exit
end

# 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
# true or false to indicate success.  If successful, the integer
# is obtained via the ReceivedInt property.
bigEndian = true
success = socket.ReceiveInt32(bigEndian)
if (success != true)
    print socket.lastErrorText() + "\n";
    exit
end

dt = Chilkat::CkDateTime.new()
dt.SetFromNtpTime(socket.get_ReceivedInt())

# Show the current local date/time
bLocalTime = true
print "Current local date/time: " + dt.getAsRfc822(bLocalTime) + "\n";

maxWaitMs = 10
socket.Close(maxWaitMs)