VB.NET Non-Interactive Login Attempt...

[JayBee]

See below...

[JayBee]

Okay, I fiddled around and this works...

Try
Dim postData As String = "username=XXX&password=YYY"
Dim cert As New X509Certificate2("E:\CCC.p12", "")

Dim request As HttpWebRequest = WebRequest.Create("https://identitysso-api.betfair.com/api/certlogin")

request.Method = "POST"
request.ContentType = "application/x-www-form-urlencoded"
request.Headers.Add("X-Application: ZZZ")
request.ClientCertificates.Add(cert)
request.Accept = "application/json"

Using dataStream As Stream = request.GetRequestStream()
Using writer As New StreamWriter(dataStream, Encoding.[Default])
writer.Write(postData)
End Using
End Using

Using stream As Stream = DirectCast(request.GetResponse(), HttpWebResponse).GetResponseStream()
Using reader As New StreamReader(stream, Encoding.[Default])
Dim responseFromServer As String = reader.ReadToEnd()
Print(responseFromServer)
End Using
End Using

Catch ex As Exception

Print("Exception " & ex.Message)

End Try

XXX is username, YYY is password, CCC is certificate name and ZZZ is AppKey.

The JSON response can be serialized to strip out the SSOID. Phew!