Blue Coat Systems Time Clock Proxy SG Manuel D’Utilisation

ProxySG Content Policy Language Guide

238

URL is considered complete, and replaces any URL that contains a substring matching the 

 substring. Sub-patterns of the 

 matched can be substituted in 

 using the 

$(n)

 syntax, where 

 is an integer from 1 to 32, specifying the 

matched sub-pattern. For more information, see Appendix D: "CPL Substitutions".

•

—A quoted string that can optionally include one or more variable 

substitutions, which replaces the host portion of the URL once the substitutions are performed. 
Note that the resulting host is considered complete, and it replaces the host in the URL forms 
specified. Sub-patterns of the 

 matched can be substituted in 

 

using the 

$(n)

 syntax, where 

 is an integer from 1 to 32, specifying the matched sub-pattern. For 

more information, see Appendix D: "CPL Substitutions".

•

—An optional list of up to three forms of the request URLs that will have the 

URL or host replaced. If this parameter is left blank, all three forms are rewritten. The following 
are the possible values:

❐

log

Request URL used when generating log messages.

❐

cache

Request URL used to address the object in the local cache .

❐

server

Request URL sent to the origin server.

•

—A quoted string that can optionally include one or more variable 

substitutions, which replaces the entire component of the header matched by the 

 

substring. Sub-patterns of the 

 matched can be substituted in 

 using the 

$(n)

 syntax, where 

 is an integer from 1 to 32, indicating the 

matched sub-pattern. For more information, see Appendix D: "CPL Substitutions".

Any rewrite of 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.

•

Use in 

<Proxy>

 and 

<Cache>

 layers.

•

Do not use in 

<Exception>

, 

<Forward>

, or 

<Admin>

 layers.

•

URL and host rewrites apply to all transactions. Header rewrites apply to HTTP transactions.

rewrite(url, "^http://www\.ijk\.com/(.*)", "http://www.server1.ijk.com/$(1)")