Classe TSNTPSend

Campos

Unit

type TSNTPSend = class(TSynaClient)

Implementation of NTP and SNTP client protocol

, include time synchronisation. It can send NTP or SNTP time queries, or it can receive NTP broadcasts too.

Note: Are you missing properties for specify server address and port? Look to parent TSynaClient too!

	`constructor Create;`
	`destructor Destroy; override;`
	`function DecodeTs(Nsec, Nfrac: Longint): TDateTime;`
	`procedure EncodeTs(dt: TDateTime; var Nsec, Nfrac: Longint);`
	`function GetSNTP: Boolean;`
	`function GetNTP: Boolean;`
	`function GetBroadcastNTP: Boolean;`

	`property NTPReply: TNtp read FNTPReply;`
	`property NTPTime: TDateTime read FNTPTime;`
	`property NTPOffset: Double read FNTPOffset;`
	`property NTPDelay: Double read FNTPDelay;`
	`property MaxSyncDiff: double read FMaxSyncDiff write FMaxSyncDiff;`
	`property SyncTime: Boolean read FSyncTime write FSyncTime;`
	`property Sock: TUDPBlockSocket read FSock;`

	`constructor Create;`

	`destructor Destroy; override;`

	`function DecodeTs(Nsec, Nfrac: Longint): TDateTime;`
Decode 128 bit timestamp used in NTP packet to TDateTime type.

	`procedure EncodeTs(dt: TDateTime; var Nsec, Nfrac: Longint);`
Decode TDateTime type to 128 bit timestamp used in NTP packet.

	`function GetSNTP: Boolean;`
Send request to TSynaClient.TargetHost and wait for reply. If all is OK, then result is `True` and NTPReply and NTPTime are valid.

	`function GetNTP: Boolean;`
Send request to TSynaClient.TargetHost and wait for reply. If all is OK, then result is `True` and NTPReply and NTPTime are valid. Result time is after all needed corrections.

	`function GetBroadcastNTP: Boolean;`
Wait for broadcast NTP packet. If all OK, result is `True` and NTPReply and NTPTime are valid.

	`property NTPReply: TNtp read FNTPReply;`
Holds last received NTP packet.

	`property NTPTime: TDateTime read FNTPTime;`
Date and time of remote NTP or SNTP server. (UTC time!!!)

	`property NTPOffset: Double read FNTPOffset;`
Offset between your computer and remote NTP or SNTP server.

	`property NTPDelay: Double read FNTPDelay;`
Delay between your computer and remote NTP or SNTP server.

	`property MaxSyncDiff: double read FMaxSyncDiff write FMaxSyncDiff;`
Define allowed maximum difference between your time and remote time for synchronising time. If difference is bigger, your system time is not changed!

	`property SyncTime: Boolean read FSyncTime write FSyncTime;`
If `True`, after successfull getting time is local computer clock synchronised to given time. For synchronising time you must have proper rights! (Usually Administrator)

	`property Sock: TUDPBlockSocket read FSock;`
Socket object used for TCP/IP operation. Good for seting OnStatus hook, etc.

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