Send an HTML error message to the client.
@param req a request object @param error the HTTP error code @param reason a brief explanation of the error. If this is NULL, we'll just use the standard meaning of the error code.
See Implementation
Send an HTML error message to the client.
@param req a request object @param error the HTTP error code @param reason a brief explanation of the error. If this is NULL, we'll just use the standard meaning of the error code.