TPing

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Overview

unit		Ping.pas
inheritance

The TPing component implements at least parts of the ICMP protocoll.

It can be used to check whether some other host is reachable or not.

Properties

Address		The host's IP or DNS address which will be pinged.
DNSResult		The IP address of the remote host if it was specified as DNS address in address property
ErrorCode		Numerical error code of the ping operation.
ErrorString		Textual error message.
Flags		Integer?
Name		Name of the instance.
PingMsg		Text to be sent as content of the ICMP packet sent via Ping.
ReplyIP		?.
ReplyRTT		?.
ReplySize		?.
ReplyStatus		?.
Size		Size of the ICMP packet sent in bytes.
SocketFamily		Kind of the socket to be used: IPv4, IPv6....
ScrAddress		Source address of the host starting the ping?
ScrAddress6		The same as SrcAddress but for IPv6
Tag		Integer value which can be used for your own purposes, e.g. when iterating through all controls of a form.
Timeout		Time in miliseconds which may elapse between sending and receiving the ICMP packet.
TTL		Sets the Time To Live value within the packet being sent.

Methods

CancelDNSLookup		Cancel a running DNS lookup.
Create		Create the instance.
DNSLoopup		Look up the IP to a given DNS address.
Ping		Sends the ICMP packet.

Events

BgException		?.
OnDisplay		?.
OnDNSLookupDone		Called when the DNS Lookuop ?.
OnEchoReply		Called when the answer to the ping arrive.
OnEchoRequest		Called when the request is being sent.

How to

• Ping a single host
• Ping a host in the background

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ICS Components Reference