SocketExist (Function)

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SocketExist (Function)

In french: SocketExiste

Checks if a socket already exists.

Remarks:

To check the validity of the connection, use SocketClientInfo to check the IP address of the client socket and the port number.
The socket exists if it has not yet been closed with SocketClose.
If the communication is interrupted, SocketExist may still return a positive result even if the dialog is stopped.

Example

// Vérification de l'existence avant la création
IF SocketExist("MaSocket") = False THEN
	IF SocketCreate("MaSocket", 8000) = False THEN
		 Error("Erreur création " + ErrorInfo(errMessage))
	 END
ELSE
	 SocketRead("MaSocket", False)
END

Syntax

<Result> = SocketExist(<Socket name>)

<Result>: Boolean

True if the socket exists,
False otherwise.

<Socket name>: Character string

Name of the socket to be checked.
For a WINDEV application, this name is defined:
by SocketCreate, SocketCreateSSL or SocketCreateInfrared (for a simplified server).
by SocketAccept (for a standard server).
by SocketConnect (for a WEBDEV website).
Warning: the socket name is "case-sensitive".

Remarks

Required permissions

This function changes the permissions required by the application.
Required permission: INTERNET
This permission allows the applications to open the network sockets.

Component: wd300com.dll