Checks whether a network address can be reached by using the ICMP protocol (similar to the PING network utility).
IF Ping("www.mysite.com") = True THEN
Info("The server is available. You can see the News")
ELSE
Info("Server temporarily unavailable")
END
Sintaxis
<Result> = Ping(<Address> [, <Maximum Duration>])
<Result>: Boolean
- True if the sought address is "visible" on the network,
- False otherwise.
<Address>: Character string (with quotes)
Address for which the network connection must be checked. This IP address can have the following format:- Address in XXX.XXX.XXX.XXX format (125.5.110.100 for example). This syntax is recommended.
- DNS address of the computer (www.windev.com for instance).
- Address returned by NetIPAddress
<Maximum Duration>: Optional integer or optional Duration
Maximum duration allowed to find the address (in milliseconds). This parameter can correspond to: - an integer corresponding to the number of milliseconds,
- a Duration variable,
Versiones 23 y posterioresthe direct indication of duration (1 s or 10 ms for example).
Nueva funcionalidad versión 23the direct indication of duration (1 s or 10 ms for example).
This duration is set to 1000 by default.
Observaciones
Ping is mainly a tool for network diagnostic. It does not guarantee that:
- the computer will respond on a given port (to do so, use SocketConnect).
- the computer is broken. Indeed, if the ping service is stopped on the computer, this computer will stop responding while it is still operating properly.
Clasificación Lógica de negocio / GUI : Lógica de negocio
Componente : wd250com.dll