Get a Received Client Certificate (Server Side)

See more Socket/SSL/TLS Examples

Demonstrates Socket.GetRcvdClientCert, which copies a client certificate presented during the TLS handshake of an accepted server-side connection into a Cert object.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Dim success As Long
success = 0

Dim socket As New ChilkatSocket

'  The file path is relative to the application's current working directory.  An absolute path
'  may also be used.  Supply the path appropriate to your own environment.
'  The PFX password should come from a secure source rather than being hard-coded.
Dim pfxPassword As String
pfxPassword = "myPfxPassword"
Dim cert As New ChilkatCert
success = cert.LoadPfxFile("qa_data/server.pfx",pfxPassword)
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

success = socket.InitSslServer(cert)
If (success = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

success = socket.BindAndListen(5000,25)
If (success = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

'  Accept a client connection.  The accepted connection carries any client certificate presented
'  during the TLS handshake.
Dim connectedSock As New ChilkatSocket
success = socket.AcceptNext(20000,connectedSock)
If (success = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

'  Copy each received client certificate and inspect it.
Dim numClientCerts As Long
numClientCerts = connectedSock.NumReceivedClientCerts
Dim clientCert As New ChilkatCert
Dim i As Long
For i = 0 To numClientCerts - 1
    success = connectedSock.GetRcvdClientCert(i,clientCert)
    If (success = 0) Then
        Debug.Print connectedSock.LastErrorText
        Exit Sub
    End If

    Debug.Print "Client certificate subject: " & clientCert.SubjectCN
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