Squid configuration directive ie_refresh

This directive is not available in the v8 version of Squid.

This directive is not available in the v7 version of Squid.

This directive is not available in the v6 version of Squid.

This directive is not available in the v5 version of Squid.

For older versions than v5 see the linked pages above


Option Name:	ie_refresh
Replaces:
Requires:
Default Value:	ie_refresh off
Suggested Config:
Microsoft Internet Explorer up until version 5.5 Service Pack 1 has an issue with transparent proxies, wherein it is impossible to force a refresh. Turning this on provides a partial fix to the problem, by causing all IMS-REFRESH requests from older IE versions to check the origin server for fresh content. This reduces hit ratio by some amount (~10% in my experience), but allows users to actually get fresh content when they want it. Note because Squid cannot tell if the user is using 5.5 or 5.5SP1, the behavior of 5.5 is unchanged from old versions of Squid (i.e. a forced refresh is impossible). Newer versions of IE will, hopefully, continue to have the new behavior and will be handled based on that assumption. This option defaults to the old Squid behavior, which is better for hit ratios but worse for clients using IE, if they need to be able to force fresh content.

ie_refresh