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Wait for a Socket to Become Readable

See more Socket/SSL/TLS Examples

Demonstrates Socket.SelectForReading, which waits for read-ready activity on the socket, or on any contained socket when the object is a socket set. It returns 1 if ready, 0 on timeout, or -1 on error.

Background. A timeoutMs of 0 performs a nonblocking poll. With a socket set, this monitors many connections at once for readability.

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Local $bSuccess = False

$oSocket = ObjCreate("Chilkat.Socket")

;  Connect to the server using TLS.
Local $bTls = True
Local $iMaxWaitMs = 5000
$bSuccess = $oSocket.Connect("example.com",5000,$bTls,$iMaxWaitMs)
If ($bSuccess = False) Then
    ConsoleWrite($oSocket.LastErrorText & @CRLF)
    Exit
EndIf

;  Wait up to 5 seconds for read-ready activity on the socket (or, for a socket set, on any contained
;  socket).  Returns 1 if ready, 0 on timeout, or -1 on error.
Local $iReady = $oSocket.SelectForReading(5000)
If ($iReady < 0) Then
    ConsoleWrite($oSocket.LastErrorText & @CRLF)
    Exit
EndIf

If ($iReady <> 1) Then
    ConsoleWrite("No data became available before the timeout." & @CRLF)
    Exit
EndIf

ConsoleWrite("The socket has data ready to read." & @CRLF)