Blue Coat Systems Proxy SG

ProxySG Content Policy Language Guide

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•server_url_substring—A string that, if found in the server URL, will be replaced by the

client_url_substring. The comparison is done against original normalized URLs embedded in

the document.

Note: Both client_url_substring and server_url_substring are literal strings. Wildcard

characters and regular expression patterns are not supported.

Discussion

If there are a series of subst_embedded and subst_prefix statements in a url_rewrite definition,

the first statement to match a URL takes effect and terminates processing for that URL.

Layer and Transaction Notes

Applies to proxy transactions.

Example

<Proxy> ; server portal for IJK

url=ijk.com/ action.ijk_server_portal(yes)

; This transformation provides server portaling for IJK non video content

define url_rewrite ijk_portal

caseless

subst_embedded "http://www.ijk.com/" "http://www.server1.ijk.com/"

end

; This action runs the transform for IJK server portaling for http content

; Note that the action is responsible for rewriting related headers

define action ijk_server_portal

; request rewriting

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

rewrite( request.header.Referer, "^http://www\.ijk\.com/(.*)",

"http://www.server1.ijk.com/`(1)" )

; response rewriting

transform ijk_portal

rewrite( response.header.Location, "^http://www\.server1\.ijk\.com/(.*)",

"http://www.ijk.com/`(1)" )

end