Zero Status Code in Log

To all of you,

what do all those HTTP status codes of 000 in the access log mean ?
I think 'TCP_IFMODSINCE/000/NONE' is just an IMS hit that got an 304
answer from squid. I'd prefer that to read 'TCP_IFMODSINCE/304/NONE'
though.

But what about these:
TCP_MISS/000/FIRST_PARENT_MISS
TCP_MISS/000/DIRECT
TCP_EXPIRED/000/FIRST_PARENT_MISS
TCP_REFRESH/000/DIRECT

All of those requests have a size of 0. I checked the parent cache and
it lists those requests as ERR_CONNECT_FAIL. I wasn't able to check on
the DIRECTs.

All of this is with squid 1.0.0pl1 with native logging.

Thanks for any help,
  Heino

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Heino Peters         | email:                      | Tel.:
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