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Socket TLS Mutual Authentication (Client-Side Certificate)

See more Socket/SSL/TLS Examples

This example demonstrates how to provide a client-side certificate, also known as "two-way authentication" or "mutual authentication" for servers that require a client certificate.

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Local $bSuccess = False

; This example assumes the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

$oSock = ObjCreate("Chilkat.Socket")

; Set the certificate to be used for mutual TLS authentication
; (i.e. sets the client-side certificate for two-way TLS authentication)
$bSuccess = $oSock.SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword")
If ($bSuccess <> True) Then
    ConsoleWrite($oSock.LastErrorText & @CRLF)
    Exit
EndIf

; Note: The certificate used for the client-side of TLS mutual authentication
; must have the associated private key available. (.pfx/.p12 files typically store both
; the certificate and associated private key.)

; Establish the connection using the socket object (with client certificate authentication).
Local $bTls = True
Local $iPort = 443
Local $iMaxWaitMs = 5000
$bSuccess = $oSock.Connect("www.example.com",$iPort,$bTls,$iMaxWaitMs)
If ($bSuccess <> True) Then
    ConsoleWrite("Connect Failure Error Code: " & $oSock.ConnectFailReason & @CRLF)
    ConsoleWrite($oSock.LastErrorText & @CRLF)
    Exit
EndIf

; At this point, the Socket object is connected and authenticated using the client-side cert

; ...
; ..