WebASP ActiveX Control (HTTP and HTTPS)

Use the WebASP control to communicate with Web Servers using HTTP and HTTPS. The WebASP control differs from the Web control in the following ways:

It is WinInet independent, making this control suitable for high-performance web server applications.
It uses a powerful WebMessage object which represents an HTTP Request and Response, resulting in more intuitive use.
It is integrated with the WebPage object, which can be used for powerful HTML parsing and resource collecting.

Features include:

Easily fetch a complete web page with only one method call.
Post files to the server using the PostedFile property.
Use the included WebPage object to gather HTML resources and to parse HTML.
Cookie object makes it easy to create and send cookies within your code.
Secure (HTTPS) connections fully supported. In fact, you can custom handle received certificates.
Client authentication fully supported.

Development Environments

Visual Studio .NET (.NET Framework)
Visual Basic (VB)
Visual C++ (VC++)
FoxPro
PowerBuilder
Delphi
C++ Builder
ASP
Office 97/2000

Interface

Public Properties
Blocked	A True value indicates the control is currently executing a blocking method (Timeout is greater than 0), which has neither completed nor timed out with a ptTimeout error.
Certificate	Certificate Object to use when authenticating to the remote host.
LocalAddress	Returns the address of the local host in dot notation (for example, nnn.nnn.nnn.nnn). When not connected, it returns an empty string.
LocalPort	Returns the port number that the socket is bound to. When not connected, it returns 0.
MaxMemBuffer	Maximum number of memory bytes used when receiving the body of a request.
Protocol	Specifies the security protocol used.
ProxyHost	Specifies the name or address of the proxy server that requests are to be routed through.
ProxyPassword	Password to be sent on all requests through a proxy server that requires authentication.
ProxyPort	Specifies the port used by proxy server that requests are to be routed through.
ProxyType	The type of proxy server used for this connection.
ProxyUsername	Username to be sent on all requests through a proxy server that requires authentication.
Redirect	Determines if auto redirection is to take place.
RemoteCertificate	The certificate from the remote machine.
Request	WebMessage Object, the request to be sent to the server.
Response	WebMessage Object, the response from the server.
Security	Sets the security level during communication.
State	Provides status information to the user interface. The State event fires to signal that this property has changed.
Timeout	Controls the blocking behavior of methods that can be used in blocking and non-blocking ways.
Public Methods
Abort	Abort any blocking method and release all system resources.
About	Show the About Box.
ClearCertificate	Clears the Certificate object contained in the Cerificate property.
Command	Use the Command method to send any command to the server.
Get	Use the Get method to retrieve data from the server.
Head	Use the Head method to retrieve header data from the server.
Post	Use the Post method to send data to the server for processing.
Put	Use the Put method to store data on the server.
Trace	Start or stop the accumulation of trace or debug data. Once started, this method accumulates data until it is turned off.
Public Events
Authenticate	Fires when the remote host has sent a certificate to be authenticated.
Certificate	Fires when the remote host is requesting a certificate and the Certificate property is not set to a valid Certificate Object.
Error	Fires when an error condition occurs.
Progress	Fires when a method has completed, the server has sent a reply, or progress information is available.
Redirect	Fires when the remote host has sent a certificate to be authenticated.
State	Fires when the State property changes.

Code Example

How easy is the WebASP control to use? Check out the following VB example below, which demonstrates grabbing an HTML file and saving it.

WebASP1.Timeout = 30000

'Reset the Request Message
WebASP1.Request.Content = ""

' GET a file
WebASP1.Request.Url = "www.test.com/testweb.html"
WebASP1.Get

'check the result
If WebASP1.Response.Status = 200 Then
   ' good response from server
   ' save it to a file
   WebASP1.Response.Body.Filename = "C:\temp\TestWeb.txt"
End If

Related Content:

WebASP ActiveX Control

WebPage Object

HTTP Stock Quote Sample

HTTP Web Site Scraping Sample

PowerTCP for ActiveX:

Emulation for ActiveX