SocketExist (Function)

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SocketExist (Function)

In french: SocketExiste

Checks the existence of socket.

Notes:

To check the connection validity, use SocketClientInfo to check the IP address of client socket and the port number.
The socket exists as long as the created socket was not closed by SocketClose.
If the communication is interrupted, SocketExist may still return a positive result even if the dialog is stopped.

Versions 15 and later

This function is now available for the Android applications.

New in version 15

This function is now available for the Android applications.

Versions 17 and later

This function is now available for the iPhone/iPad applications.

This function is now available for the Windows Phone applications.

New in version 17

This function is now available for the iPhone/iPad applications.

This function is now available for the Windows Phone applications.

This function is now available for the iPhone/iPad applications.

This function is now available for the Windows Phone applications.

Versions 18 and later

This function is now available in Android Widget mode.

New in version 18

This function is now available in Android Widget mode.

Versions 22 and later

This function is now available in browser code.

New in version 22

This function is now available in browser code.

Versions 23 and later

This function is now available in Universal Windows 10 App mode.

New in version 23

This function is now available in Universal Windows 10 App mode.

Example

// Check the existence before the creation
IF SocketExist("MySocket") = False THEN
IF SocketCreate("MySocket", 8000) = False THEN
Error("Creation error" + ErrorInfo(errMessage))
END
ELSE
SocketRead("MySocket", False)
END

Syntax

<Result> = SocketExist(<Socket Name>)

<Result>: Boolean

True if the socket exists,
False otherwise.

<Socket Name>: Character string (with quotes)

Name of socket to check.
For a WINDEV application, this name was defined:
by SocketCreate, SocketCreateSSL or SocketCreateInfrared (for a simplified server).
by SocketAccept (for a standard server).
by SocketConnect (for a WEBDEV site).
Caution: the socket name is case sensitive.

Remarks

Required permissions

The call to this function modifies the permissions required by the application.
Required permission : INTERNET
This permission allows the applications to open the network sockets.

Component : wd250com.dll