(VB.NET) OCSP Check Domain's Server Certificate Revocation Status

Sends an OCSP request to determine the revocation status for an SSL server certificate.

Note: This example requires Chilkat v9.5.0.84 or greater.

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

Dim http As New Chilkat.Http

' Check the revocation status of the SSL server certificate for chilkatsoft.com
Dim status As Integer = http.OcspCheck("chilkatsoft.com",443)

Debug.WriteLine("chilkatsoft.com status = " & status)

' The status can have 4 values:
' -1: Unable to check because of an error.
'  0: Good
'  1: Revoked
'  2: Unknown

If (status < 0) Then
    Debug.WriteLine(http.LastErrorText)
End If


' Now check the status for a revoked server certificate.
status = http.OcspCheck("revoked.badssl.com",443)

Debug.WriteLine("revoked.badssl.com status = " & status)