TPing
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Contents
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 | ?. | |
| ErrorCode | ?. | |
| ErrorString | ErrorMessage. | |
| Flags | Integer? | |
| HostName | ?. | |
| HostIP | ?. | |
| ICMPDLLHandle | TPing uses the ICMP internally via this handle. | |
| Name | Name of the instance. | |
| Reply | ?. | |
| Size | Size of the ICMP packet sent in bytes. | |
| 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
| OnDisplay | ?. | |
| OnDNSLookupDone | Called when the DNS Lookuop ?. | |
| OnEchoRequest | Called when the request is being sent. | |
| OnEchoReply | Called when the answer to the ping arrive. |
How to
