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generated ETag header value is invalid #24

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avdv opened this issue Dec 23, 2014 · 0 comments
Open

generated ETag header value is invalid #24

avdv opened this issue Dec 23, 2014 · 0 comments

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@avdv
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avdv commented Dec 23, 2014

According to http://tools.ietf.org/html/rfc7232#section-2.3 an ETag header has the format:

ETag       = entity-tag

     entity-tag = [ weak ] opaque-tag
     weak       = %x57.2F ; "W/", case-sensitive
     opaque-tag = DQUOTE *etagc DQUOTE
     etagc      = %x21 / %x23-7E / obs-text
                ; VCHAR except double quotes, plus obs-text

Ie. the tag has to be wrapped in double quotes.

The StaticFileHandler generates ETags without those quotes. Found using the REDbot tool, which complains thusly:

  • The etag header's syntax isn't valid.

    The value for this header doesn't conform to its specified syntax; see
    its definition for more information.
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@avdv