B4X Requires Chilkat v11.0.0+

Get the Server Certificate, Certificate Chain, and Root CA Certificate

See more HTTP Examples

Demonstrates how to get the HTTP server certificate, its certificate chain, and the root CA certificate. B4X

Dim success As Boolean = False

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

Dim http As ChilkatHttp
http.Initialize("http")

'  We're getting the SSL/TLS certificate, so make sure to connect to the SSL/TLS port (443).
Dim sslCert As ChilkatCert
sslCert.Initialize("sslCert")
success = http.GetServerCert("apple.com", 443, sslCert)
If success = False Then
    Log(http.LastErrorText)
    Return
End If


Dim certChain As ChilkatCertChain
certChain.Initialize
success = sslCert.BuildCertChain(certChain)
If success = False Then
    Log(sslCert.LastErrorText)
    Return
End If


Dim cert As ChilkatCert
cert.Initialize("cert")
Dim i As Int = 0
Dim numCerts As Int = certChain.NumCerts
Do While i < numCerts
    certChain.CertAt(i, cert)
    Log("SubjectDN " & i & ": " & cert.SubjectDN)
    Log("IssuerDN " & i & ": " & cert.IssuerDN)
    i = i + 1
Loop

'  If the certificate chain reaches the root CA cert, then the last cert in the chain
'  is the root CA cert.
If certChain.ReachesRoot = True Then
    Dim caCert As ChilkatCert
    caCert.Initialize("caCert")
    certChain.CertAt(numCerts - 1, caCert)
    Log("CA Root Cert: " & caCert.SubjectDN)
End If