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Subject [Bug 54015] New: Combined (bytes received + bytes sent) logging directive
Date Tue, 16 Oct 2012 19:35:57 GMT

          Priority: P2
            Bug ID: 54015
           Summary: Combined (bytes received + bytes sent) logging
          Severity: enhancement
    Classification: Unclassified
                OS: All
          Hardware: PC
            Status: NEW
           Version: 2.5-HEAD
         Component: mod_logio
           Product: Apache httpd-2

mod_logio currently adds two logging directives: %I for bytes received (in) and
%O for bytes sent (out). They are very handy in several situations. However,
many packages that help the user translate the access logs into statistics,
only provide for a single 'byte counter' when reading access_log, as by popular
and accepted log formats.

Before mod_logio was available this counter was usually used to count %b, which
doesn't include received bytes, and is inaccurate on partial downloads (it
implies '100 MB sent' when a 100 MB file download is cancelled after 5 MB for

It seems that some distributions (at least Ubuntu) now include %O instead of %b
to accurately record true sent bytes, but this still completely leaves out
received bytes.

I would like to suggest adding a logging directive that has the cumulative
result of %I and %O so that:
- sent and received data can be measured with the currently available packages
for statistics;
- this data can be recorded with those tools, without adding extra columns/data
to the already available and well accepted log formats.

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