AutoIt

Check Internet Connectivity

See more Socket/SSL/TLS Examples

Demonstrates an efficient way to test for Internet connectivity. AutoIt

Local $bSuccess = False

$oSocket = ObjCreate("Chilkat.Socket")
;  1. Use a reliable Anycast IP. 
;     8.8.8.8 (Google) or 1.1.1.1 (Cloudflare) are the industry standards.
Local $sTargetIp = "8.8.8.8"

;  2. Use Port 53 (DNS). 
;     DNS servers typically listen on TCP Port 53 as well as UDP. 
;     (Alternatively, use port 443 if you suspect port 53 is blocked).
Local $iPort = 53

;  3. Disable SSL (0). 
;     We are not doing a handshake, just a TCP connection.
Local $bSsl = False

;  4. Short Timeout (1500ms).
;     If you can't reach Google in 1.5 seconds, the connection is 
;     likely too poor for practical use anyway.
Local $iTimeoutMs = 1500

;  Connect
$bSuccess = $oSocket.Connect($sTargetIp,$iPort,$bSsl,$iTimeoutMs)
If ($bSuccess = False) Then
    ConsoleWrite($oSocket.LastErrorText & @CRLF)
    Exit
EndIf

$oSocket.Close(10)

ConsoleWrite("We have Internet connectivity." & @CRLF)