Implements a Simple Network Time Protocol client.
TIdSNTP = class(TIdUDPClient);
The TIdSNTP implements a client for the Simple Network Time Protocol (SNTP), as described in the Internet standards document:
SNTP is an extremely reliable protocol for time-synchronization on the Internet with accuracy from 1 to 50 milliseconds, even over great distances.
SNTP Version 4 includes certain optional extensions to the basic Version 3 model. TIdSNTP does not implement the optional extensions for either Key Identifier or Message Digest portions of the NTP/SNTP message format.
TIdSNTP, a descendant of TIdUDPClient, utilizes SNTP in the unicast client mode.
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