Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

Excel Examples

Web API Categories

ASN.1
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Azure Cloud Storage
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text
HTTP

HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Excel) HTTP Authentication (Basic, NTLM, Digest, Negotiate)

Demonstrates how to use HTTP authentication. Authentication can be added to any method that sends an HTTP request to the server, such as SynchronousRequest, QuickGetStr, PostXml, etc. To add authentication, simply set the Login and Password properties.

By default, Chilkat will use basic HTTP authentication, which sends the login/password clear-text over the connection. This is bad if SSL/TLS (i.e. HTTPS) is not used. However, if the connection is secure, there should be nothing wrong with using basic authentication.

Chilkat supports more secure authentication types as well, including Digest, NTLM, and Negotiate. To use Digest authentication, simply set the DigestAuth property = True. To use NTLM authentication, set the NtlmAuth property = True. Likewise, to use Negotiate authentication, set the NegotiateAuth property = True.

Important: Negotiate authentication is only supported for the Chilkat implementations that run on the Windows platform. This is because it is implemented internally using Microsoft's SSPI API. NTLM authentication however, is available for all supported operating systems because Chilkat implements NTLM directlly (i.e. does not use Microsoft SSPI for the underlying implementation.)

Download Excel Class Modules

Chilkat Excel Class Modules

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

Dim http As Chilkat.Http
Set http = Chilkat.NewHttp

' Set the Login and Password properties for authentication.
http.Login = "chilkat"
http.Password = "myPassword"

' To use HTTP Basic authentication..
http.BasicAuth = True


html = http.QuickGetStr("http://localhost/xyz.html")
If (http.LastMethodSuccess <> True) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

' Examine the HTTP status code returned.  
' A status code of 401 is typically returned for "access denied"
' if no login/password is provided, or if the credentials (login/password)
' are incorrect.
Debug.Print "HTTP status code for Basic authentication: "; http.LastStatus

' Examine the HTML returned for the URL:
Debug.Print html

Dim http2 As Chilkat.Http
Set http2 = Chilkat.NewHttp

' To use NTLM authentication, set the 
' NtlmAuth property = True
http2.NtlmAuth = True

' The session log can be captured to a file by
' setting the SessionLogFilename property:
http2.SessionLogFilename = "ntlmAuthLog.txt"

' Examination of the HTTP session log will show the NTLM
' back-and-forth exchange between the client and server.

' This call will now use NTLM authentication (assuming it
' is supported by the web server).
html = http2.QuickGetStr("http://localhost/xyz.html")
' Note: 
If (http2.LastMethodSuccess <> True) Then
    Debug.Print http2.LastErrorText
    Exit Sub
End If

Debug.Print "HTTP status code for NTLM authentication: "; http2.LastStatus

Dim http3 As Chilkat.Http
Set http3 = Chilkat.NewHttp

' To use Digest Authentication, set the DigestAuth property = True
' Also, no more than one of the authentication type properties 
' (NtlmAuth, DigestAuth, and NegotiateAuth)  should be set
' to True.  
http3.DigestAuth = True

http3.SessionLogFilename = "digestAuthLog.txt"

' This call will now use Digest authentication (assuming it
' is supported by the web server).
html = http3.QuickGetStr("http://localhost/xyz.html")
If (http3.LastMethodSuccess <> True) Then
    Debug.Print http3.LastErrorText
    Exit Sub
End If

Debug.Print "HTTP status code for Digest authentication: "; http3.LastStatus

 

© 2000-2022 Chilkat Software, Inc. All Rights Reserved.