AutoIt

Poll a Socket for Available Data

Demonstrates Socket.PollDataAvailable, which performs a nonblocking check for readable activity and returns whether data or another read-ready condition is present.

Background. This lets an application check for incoming data without blocking, for example in an event loop that services multiple tasks.

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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

;  Perform a nonblocking check for readable data.  Returns True when data or another read-ready
;  condition is present, and False when nothing is immediately available.
Local $bAvailable = $oSocket.PollDataAvailable()
If ($bAvailable <> True) Then
    ConsoleWrite("No data is immediately available." & @CRLF)
Else
    ConsoleWrite("Data is available to read." & @CRLF)
EndIf