[lp_client_isPrefetch]

Description

Google Web Accelerator and Mozilla browsers can prefetch pages, basically load pages that appear as links on the current page.  This tag looks to see if  the header "x-moz: prefetch" is present, if so, the page is being prefetched by the client browser.

Sample Usage

if: lp_client_isPrefetch;
  'You are prefetching this content!';
/if;

Source Code

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[

define_tag: 'lp_client_isPrefetch',
	-description='Returns true if client is doing a prefetch.',
	-priority='replace';

	// looks for header "x-moz: prefetch" currently sent by Google Web Accelerator and Mozilla browsers

	// more info on prefetching:
	//   http://webaccelerator.google.com/webmasterhelp.html
	//   http://www.mozilla.org/projects/netlib/Link_Prefetching_FAQ.html#Do_prefetched_requests_contain_a
	//   http://david.backpackit.com/pub/37983

	if: (string_findregexp: client_headers, -find='x-moz:\\s+.*prefetch', -ignorecase)->size;
		return: true;
	/if;
	return: false;

/define_tag;

]

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