CustWeb unit

The custweb unit provides the base functionality common to all HTTP hosting implementations in Free Pascal: CGI, FastCGI, HTTP server and Apache loadable modules. It contains the foundational classes TWebHandler and TCustomWebApplication that handle HTTP requests and provide web application functionality.

The unit supports module-based request handling, error management, event logging, and various configuration options for different hosting environments. It provides the infrastructure for routing requests to appropriate HTTP modules and managing the complete request-response cycle.

Classes and records

EFpWebError	class	Exception class for web application errors
TCustomWebApplication	class	Base class for web applications with integrated request handling
TWebHandler	class	Base class for handling HTTP requests in web applications

Procedures and functions

ExceptionToHTML

procedure

Utility function to format exceptions as HTML error pages

Types

TGetModuleEvent	procedure type	Event type for determining HTTP module class for a request
TInitModuleEvent	procedure type	Event type for HTTP module initialization
TLogEvent	procedure type	Event type for logging web application events
TOnShowRequestException	procedure type	Event type for custom exception handling in HTTP requests

Uses

• CustApp
• Classes
• SysUtils
• HTTPDefs
• fpHTTP
• EventLog