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COUNTER parameter == COUNTER=listOfCounterControl counterControl == do | total | acc | ssi | ref | err | ro | no | mntpV -- default: COUNTER=no -- restriction: applicable to HTTP, SMTP, FTP and DNS
Each access counter is stored in a file at "ADMDIR/counts/access/URL#count". Each counter file starts with a line consists of the numbers of accesses in ASCII decimal format so that it can be initialized or modified manually. The line can contain three numbers; the first one is the total count, the second one is the count excluding repetitive accesses from the same client, and the third one is the count excluding repetitive access from one of recent ten clients. Each count are represented as %T, %U and %V respectively in the format string described below.
The counter can be displayed in a specified format using SSI as the PAGE_COUNT or COUNTER value. If no "url" attribute is specified in a tag, the URL of the SHTML file containing the tag is implied. Counter values are converted to a printable character string following to the format string given in the "fmt=..." attribute. The default format is "%T".
The total count is displayed by TOTAL_HITS tag or by COUNTER tag with "sel=total". The referrer counter of a URL is incremented when the URL is in "Referer:" header in a HTTP request. Each referrer counter is stored in a file at "ADMDIR/counts/referer/URL#count-ref". The referrer counter can be displayed with "sel=ref" attribute in the COUNTER tag.
Enabling all counters for each URL can be expensive and/or unnecessary. You can reduce counters by using the counter of a MOUNT point as the representative, or using only total access counters of the server. In the following example, counters for all URLs is enabled by default (with COUNTER=do), while counters for URLs under /srv1/ is represented by the counter of /srv1/, and only the server's total counter and SSI counters are enabled for URLs under /mine/. As shown in this example, COUNTER can be specified as a MountOption of which initial value is inherited from the COUNTER parameter.
COUNTER=do MOUNT="/srv1/* http://srv1/* COUNTER=mntpV" MOUNT="/mine/* file:dirpath/* COUNTER=no,total,ssi"