Blue Coat Systems Time Clock Proxy SG Manuale Utente

ProxySG Content Policy Language Guide

178

exception( )

Selects a built-in or user-defined response to be returned to the user.

The 

exception( )

 property is overridden by 

allow

 or 

deny( )

. To set an exception that cannot be 

overridden by allow, use 

force_exception( )

.

The identity of the exception being returned can be tested in an 

<Exception>

 layer using 

exception.id=.

When the exception response selected would have a Content-Length of 512 or fewer bytes, 
Internet Explorer may substitute “friendly” error messages. To prevent this behaviour use 

exception.autopad(yes)

.

exception(exception_id, details)

where:

•

—Either the name of a built-in exception (refer to Chapter 14: “Advanced Policy” 

in the ProxySG Configuration and Management Guide for the list of built-in exceptions), or a name of 
the form 

user_defined.exception_id 

that

refers to a user-defined exception page.

•

—A text string that is substituted for 

$(exception.details)

 within the selected 

exception.

•

Use  in 

<Cache>

, 

<Proxy>

, and 

<Admin>

 layers.

•

Applies to all transactions.

•

Conditions: 

exception.id=

•

Properties:

 allow

, 

deny( )

, 

deny.unauthorized( )

, 

exception.autopad( )

, 

force_deny( )

, 

force_exception( )