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(Excel) HTTPS Windows Integrated Authentication
This example pertains to running on the Windows operating system only.
It provides guidance on how to send HTTP requests using the current logged-on Windows user credentials. This is where NTLM/Negotiate authentication is used, but the login/password credentials are not explicitly provided by the application, but are implicitly provided based on the Windows logged-on user (i.e. the Windows account for the running process).
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim http As Chilkat.Http Set http = Chilkat.NewHttp ' Chilkat implements the NTLM protocol directly, which is how it can be used on non-Windows systems. ' However, Chilkat can also optionally use Microsoft's SSPI (see https://docs.microsoft.com/en-us/windows/desktop/secauthn/ssp-packages-provided-by-microsoft) ' to allow for Windows Integrated Authentication. ' Setting the HTTP Login equal to the empty string, and the Password equal to the keyword "default" ' will cause Chilkat to use the Microsoft SSPI w/ integrated authentication. http.Login = "" http.Password = "default" ' We can also explicitly indicate that NTLM or Negotiate authentication is to be used: http.NegotiateAuth = True ' Set various properties unrelated to authentication.. ' Automatically follow redirects. http.FollowRedirects = True ' Give verbose logging in the LastErrorText (in case there are errors) http.VerboseLogging = True ' Optionally log the exact session to a file (for debugging) http.SessionLogFilename = "c:/someDir/session.txt" ' Perhaps you wish to be seen as a browser on Mac OS X.. http.UserAgent = "Mozilla/5.0 (Windows NT; Windows NT 6.1; en-GB) AppleWebKit/534.6 (KHTML, like Gecko) Chrome/7.0.500.0 Safari/534.6" ' Note: If the result of authentication is to set Cookies that are used in subsequent requests, ' then make sure Chilkat both saves and sends cookies: http.SaveCookies = True http.SendCookies = True http.CookieDir = "memory" ' Send a GET request to a URL, using Windows Integrated Authentication... responseStr = http.QuickGetStr("https://somewhere.net/api/user") If (http.LastMethodSuccess <> True) Then Debug.Print http.LastErrorText Exit Sub End If Debug.Print "response status code = "; http.LastStatus Debug.Print "response header:" Debug.Print http.LastHeader Debug.Print "----" Debug.Print responseStr
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