Daraja HTTP Framework
Daraja is a flexible HTTP server framework for Object Pascal, based on the stand-alone HTTP server in the free open source library Internet Direct (Indy).
Daraja provides the core foundation for serving HTTP resources of all content-types such as HTML pages, images, scripts, web service responses etc. by mapping resource paths to your own code. Your code then can create the response content, or let the framework serve a static file.
A simple logging facade with support for LazLogger, Log4D, and other logging frameworks.
You can find this project at https://github.com/michaelJustin/daraja-framework
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Getting Started PDF
A Getting Started document (PDF) is available at https://www.habarisoft.com/daraja_framework/2.5/docs/DarajaFrameworkGettingStarted.pdf
Project home page
Visit https://www.habarisoft.com/daraja_framework.html for more information.
- The project search path must include the Indy and Daraja source directories.
- The project search path for Include files must include the Indy Core path.
Some useful (but optional) units are located in the
optional subfolder. Include it when needed:
Usage example: contexts
In the Daraja Framework, contexts are used for the high-level separation of HTTP resources, depending on their first path segment. Here is an example which uses two contexts, 'context1' and 'context2':
This example uses 'news', 'files' and 'admin' contexts:
http://example.com/news/index.html http://example.com/files/doc1.pdf http://example.com/admin/login.html
In the Daraja Framework, creating a context only requires the context name as the parameter of the TdjWebAppContext constructor:
Server := TdjServer.Create; try Context1 := TdjWebAppContext.Create('context1'); Server.AddContext(Context1); Context2 := TdjWebAppContext.Create('context2'); Server.AddContext(Context2); Server.Start; ...
Dynamic resource handlers
Contexts need resource handlers to process requests. A resource handler is responsible for the generation of the HTTP response matching a specific client request.
However, the routing between the actual HTTP request and the resource handler is performed via 'mapping' rules.
For example, a resource handler which returns a HTML document could be mapped to the
/context1/index.html resource path with this absolute path resource handler mapping:
Alternatively, a more general suffix mapping resource handler may be used, which should handle requests to any resources with the extension
This resource handler will be invoked for all requests for *.html resources - independent of their actual document name, and also for resources in sub-paths like
/context1/this/works/with_any_page.html. (But note: the resource handler will not receive requests for other context, such as