Feature: Store URL Rewriting? • Goal: Separate out the URL used for storage lookups from the URL used for forwarding. This allows for multiple destination URLs to reference the same backend content and cut back on duplicated content, both for forward proxies (think 'google maps') and CDN type reverse proxies. • Status: deprecated. See • Version: 2.7 (only) • Developer:.

• More: Background information about Google Maps content - (Disclaimer: No, I don't work for Google. No, never have.) • Sponsored by: Xenion Communications. Contents • • • • • • Details My main focus with this feature is to support caching various CDN-supplied content which maps the same resource/content to multiple locations. Input line received from Squid: [channel-ID] URL [key-extras] channel-ID • This is the concurrency channel number. When concurrency is turned off (set to 1) this field and the following space will be completely missing. URL • The URL received from the client. In Squid with ICAP support, this is the URL after ICAP REQMOD has taken place.

This allows for multiple destination URLs to. Storeurl_rewrite_program /Users/adrian/work/squid/run/local/store_url_rewrite. Squid with php or perl “url. Linux Related — Tags: squid rewrite, squid url redirection. To the bottom of this file: /etc/squid3/squid.conf. For example to.

Key-extras • Starting with additional parameters passed to the helper which may be configured with. For backward compatibility the default key-extras for URL helpers matches the format fields sent by and older in this field position: • ip/fqdn ident method [urlgroup] kv-pair ip • This is the IP address of the client. Followed by a slash ( /) as shown above.

Fqdn • The FQDN rDNS of the client, if any is known. Squid does not normally perform lookup unless needed by logging or ACLs.

Squid does not wait for any results unless ACLs are configured to wait. If none is available - will be sent to the helper instead. How To Youtube Video Using Tubemate on this page. Ident • The IDENT protocol username (if known) of the client machine. Squid will not wait for IDENT username to become known unless there are ACL which depend on it.

So at the time re-writers are run the IDENT username may not yet be known. If none is available - will be sent to the helper instead. Method • The HTTP request method.

URL alterations and particularly redirection are only possible on certain methods, and some such as POST and CONNECT require special care. Urlgroup • Squid-2 will send this field with the URL-grouping tag which can be configured on. Squid-3.x will not send this field. Kv-pair • One or more key=value pairs. Only 'myip' and 'myport' pairs documented below were ever defined and are sent unconditionally by and older. Tag the client TCP connection () message=.

Reserved rewrite-url=. Re-write the transaction to the given URL. Reserved ttl=. Reserved *_=.

Key names ending in (_) are reserved for local administrators use. • the kv-pair field is only accepted by and newer.

• the kv-pair returned by this helper can be logged by the%note code. URL • The URL to be used instead of the one sent by the client.

If no action is required leave the URL field blank. The URL sent must be an absolute URL. Ie starting with or etc. Testing Finally, restart Squid-2.HEAD and browse google maps; check your access.log and store.log to make sure URLs are being cached! Check store.log to make sure that the google maps/earth images are being stored in the cache (SWAPOUT) and not just RELEASEd immediately. Features/StoreUrlRewrite (last edited 2013-07-27 04:58:20 by ).

Contents • • • • • • • • • • • • • • • • • • • • • • • • Details Every network and installation have their own criteria for operation. The squid developers and community do not have the time or inclination to write code for every minor situation. Instead we provide ways to easily extend various operations with local add-on scripts or programs we call helpers. What language are helper meant to be written in?

Helpers can be written in any language you like. They can be executable programs or interpreted scripts. The helpers bundled with Squid are currently written in Bash shell script, awk script, perl script, and C++.

There are also frameworks available for helpers built in Python or Ruby. • There are several languages which encounter difficulties though. Perl, Python Certain methods of writing output to stdout automatically append newline characters.