RAD Studio |  |

The structure of a Web Broker application
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Topics

Name | Description
Accessing client request information |
Adding Actions to the Dispatcher | Open the action editor from the Object Inspector by clicking the ellipsis on the Actions property of the dispatcher. Action items can be added to the dispatcher by clicking the Add button in the action editor. Add actions to the dispatcher to respond to different request methods or target URIs. You can set up your action items in a variety of ways. You can start with action items that preprocess requests, and end with a default action that checks whether the response is complete and either sends the response or returns an error code. Or, you can add a separate... more
Action items |
Dispatching Request Messages | When the dispatcher receives the client request, it generates a BeforeDispatch event. This provides your application with a chance to preprocess the request message before it is seen by any of the action items. Next, the dispatcher iterates over its list of action items, looking for an entry that matches the PathInfo portion of the request message's target URL and that also provides the service specified as the method of the request message. It does this by comparing the PathInfo and MethodType properties of the TWebRequest object with the property of the same name on the action item. When... more
Creating HTTP response messages |
The Structure of a Web Broker Application | When the Web application receives an HTTP request message, it creates a TWebRequest object to represent the HTTP request message, and a TWebResponse object to represent the response that should be returned. The application then passes these objects to the Web dispatcher (either the Web module or a TWebDispatcher component). The Web dispatcher controls the flow of the Web server application. The dispatcher maintains a collection of action items (TWebActionItem) that know how to handle certain types of HTTP request messages. The dispatcher identifies the appropriate action items or auto-dispatching components to handle the HTTP request message, and... more
The Web dispatcher |

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