Blue Coat Systems Proxy SG User Manual

Chapter 5: Action Reference

241

Any change to the server form of the request URL must be respected by policy controlling upstream 
connections. The server form of the URL is tested by the 

server_url=

 conditions, which are the only 

URL tests allowed in 

<Forward>

 layers.

All forms of the URL are available for access logging. The version of the URL that appears in a specific 
access log is selected by including the appropriate substitution variable in the access log format: 

•

c-uri

—The original URL.

•

cs-uri

—The log URL, used when generating log messages.

•

s-uri

—The cache URL, used to address the object in the local cache.

•

sr-uri

—The server URL, used in the upstream request.

In the absence of actions that modify the URL, all of these substitution variables represent the same 
value.

•

Do not use in 

<Admin>

 or 

<Forward>

 layers.

•

Use with 

exception.response.header.header_name 

in 

<Proxy>

 or 

<Exception>

 layers; 

otherwise use only from 

<Proxy>

 or 

<Cache>

 layers.

•

When used with headers, applies to HTTP transactions.

•

When used with 

im.message.text

, applies to IM transactions.

•

When used with 

url.port

, applies to all transactions.

; Modifies the URL port component to 8081 for requests sent to the server and cache.

set(url.port, 8081, server, cache)

•

Actions: 

append( )

, 

delete( )

, 

delete_matching( )

, 

redirect( )

, 

rewrite(url.host, 

regex_pattern, replacement_host)

, 

rewrite(url, regex_pattern, replacement_url)

•

Conditions: 

request.header.header_name=

, 

request.header.header_name.address=

, 

request.x_header.header_name=

, 

request.x_header.header_name.address=

, 

response.header.header_name=

, 

response.x_header.header_name=

, 

server_url=