B4X Requires Chilkat v10.1.2+

SSL Client Certificate

See more Socket/SSL/TLS Examples

Demonstrates how to connect to an SSL server using a client-side certificate, send a simple message, receive a simple response, and disconnect. B4X

Dim success As Boolean = False

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

Dim socket As ChilkatSocket
socket.Initialize("socket")

'  Create an instance of a certificate store object, load a PFX file,
'  locate the certificate we need, and use it for signing.
'  (a PFX file may contain more than one certificate.)
Dim certStore As ChilkatCertStore
certStore.Initialize
'  The 1st argument is the filename, the 2nd arg is the 
'  PFX file's password:
success = certStore.LoadPfxFile("chilkat_secret.pfx", "secret")
If success <> True Then
    Log(certStore.LastErrorText)
    Return
End If


'  Find the certificate by the subject common name:
Dim jsonCN As ChilkatJsonObject
jsonCN.Initialize
jsonCN.UpdateString("CN", "cert common name")

Dim cert As ChilkatCert
cert.Initialize("cert")
success = certStore.FindCert(jsonCN, cert)
If success = False Then
    Log(certStore.LastErrorText)
    Return
End If


success = socket.SetSslClientCert(cert)

Dim ssl As Boolean = True
Dim maxWaitMillisec As Int = 20000

'  The SSL server hostname may be an IP address, a domain name,
'  or "localhost".  You'll need to change this:
Dim sslServerHost As String
sslServerHost = "123.123.88.88"
Dim sslServerPort As Int = 8123

'  Connect to the SSL server:
success = socket.Connect(sslServerHost, sslServerPort, ssl, maxWaitMillisec)
If success <> True Then
    Log(socket.LastErrorText)
    Return
End If


'  Set maximum timeouts for reading an writing (in millisec)
socket.MaxReadIdleMs = 20000
socket.MaxSendIdleMs = 20000

'  Send a "Hello Server! -EOM-" message:
success = socket.SendString("Hello Server! -EOM-")
If success <> True Then
    Log(socket.LastErrorText)
    Return
End If


'  The server (in this example) is going to send a "Hello Client! -EOM-" 
'  message.  Read it:
Dim receivedMsg As String = socket.ReceiveUntilMatch("-EOM-")
If socket.LastMethodSuccess <> True Then
    Log(socket.LastErrorText)
    Return
End If


'  Close the connection with the server
'  Wait a max of 20 seconds (20000 millsec)
success = socket.Close(20000)

Log(receivedMsg)