[RTEMS Project] #3324: mhttpd's http etag can result in invalid caching in a browser.

[RTEMS trac]

#3324: mhttpd's http etag can result in invalid caching in a browser.
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  Reporter:  Chris Johns  |      Owner:  Chris Johns
      Type:  defect       |     Status:  assigned
  Priority:  normal       |  Milestone:  4.11.4
 Component:  lib          |    Version:  4.11
  Severity:  normal       |   Keywords:
Blocked By:  3323         |   Blocking:
--------------------------+-------------------------
 The mhttp's http etag uses the mtime and file length and this can cause
  subtle issues if a target has no RTC or it is incorrect and files are
  being copied without preserving the mtime or changes happen that do not
  change the length.

  The `cp` and `untar` code do not update a file's time.

  Add support for an etag callback so a user can manage the tag, ie MD5 or
  something similar.

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Ticket URL: <http://devel.rtems.org/ticket/3324>
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