HTTP Request Description

The HttpRequest component provides the request data to be sent to the server with the POST or GET methods. This component only prepares the HTTP request data. It does not send it over the HTTP protocol.

HttpRequest is an independent stand-alone component. So it is possible to use it with any other http client engines / components for composing Web HTTP requests formatted according to RFC standards: RFC 1867, RFC 1521

Please see the BuildFormPostRequest method to learn more on how to extract the Web Form POST request from existing HTML source and create the HTTP request data.

The most common members of the HttpRequest component can be seen below:

Supported HTTP request content types

Name   Description  TclBinaryRequestItem Implements the binary HTTP request storage for the Internet components.  TclFormFieldRequestItem Is a container for the web form field request data.  TclSubmitFileRequestItem Implements the file HTTP request storage for the Internet components.  TclTextRequestItem Provides the text HTTP request storage for the Internet components.

Property List

Name   Description  Boundary Represents a character sequence that delimits the multipart request items.  FormFields Gets the TclFormFieldRequestItem object with the specified name.  Header Gets or sets the necessary information about the request header fields (TclHttpRequestHeader object).  HeaderSource Returns a string list that represents the current Web HTTP request header.  Items Gets the request item at the specified index in the collection.  RequestSource Returns a string list that represents the current Web HTTP request.  TotalSize Gets the total data size in the request items collection.

Method List

Name   Description  Add Adds a new TclHttpRequestItem or its descendant to the Items array.  AddBinaryData Creates a new TclBinaryRequestItem instance and adds it to the Items array.  AddFormField Creates a new TclFormFieldRequestItem instance and adds it to the Items array.  AddSubmitFile Creates a new TclSubmitFileRequestItem instance and adds it to the Items array.  AddTextData Creates a new TclTextRequestItem instance and adds it to the Items array.  BuildFormPostRequest Allows extracting the Web Form POST request from given html source and building the HTTP request items.  Clear Deletes all items from the collection.  Delete Deletes a request item from the Items array.

Event List

Name   Description  OnGetDataStream Occurs when the request builder is about to build the TclBinaryRequestItem request item and substitute its data to the resulting HTTP request.  OnGetFormNumber Occurs when the request builder detects more than one Web FORM tags within the HTML source and requires for specifying which of Form tags should be processed.

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