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  1. Traffic Server
  2. TS-2942

Weird value on %<fsiz> field in log files

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 7.1.0
    • Component/s: Logging, Metrics
    • Labels:
      None

      Description

      We've configured ATS as a reverse proxy, and We've been noticed a really weird traffic value in our monitoring system. After spend some time digging through log files, I could notice that, in some cases the field %<fsiz> brings a huge value (20 characters) instead of the file size.

      I found this closed issue regarding the <fsiz> implementation, and I think there might be a issue when there is no Content-Length from the origin server.

      https://issues.apache.org/jira/browse/TS-2212

      Log format:
      ##########################
      <LogFormat>
      <Name = "myformat"/>
      <Format = "%<ttmsf> %<

      {Host}

      cqh> %<chi> [%<cqtn>] %<cqhm> %<cquup> %<cqhv> %<pssc> %<cqhm> %<fsiz> %<cquup> %<

      {User-Agent}

      cqh> %<

      {Referer}

      cqh> %<crc>"/>
      </LogFormat>
      ##########################

      Log result:

      ##########################
      0.181 myhostname.com 123.123.123.123 [17/Jul/2014:15:50:33 -0000] GET /foo/bar/file.jpg HTTP/1.1 200 GET 3904675161847313968 /foo/bar/file.jpg Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36 http://myreferer.com TCP_MISS

      ###########################

      In that case, the <fsiz> field has the value "3904675161847313968" instead the value of a few bytes.
      I believe when there is no way to get the real content-length, we should return 0 in order to avoid misinterpretation.

      Thanks in advance,
      Daniel

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            • Assignee:
              tstroh Tyler Stroh
              Reporter:
              picollib@gmail.com Daniel Picolli Biazus
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              Dates

              • Created:
                Updated: