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https://issues.apache.org/jira/browse/TS-2614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13924119#comment-13924119
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James Peach commented on TS-2614:
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Thanks [~rwbarber2] and [~hua zhang]
> Response to invalid Content-Length for POST should be a 400 error
> -----------------------------------------------------------------
>
> Key: TS-2614
> URL: https://issues.apache.org/jira/browse/TS-2614
> Project: Traffic Server
> Issue Type: Bug
> Components: HTTP
> Reporter: Ron Barber
> Assignee: James Peach
> Labels: review
> Fix For: 5.0.0
>
> Attachments:
> 0001-TS-2614-Response-to-invalid-Content-Length-for-POST-.patch
>
>
> We have some users attempting to POST where the content length is -1.
> POST /services/rest HTTP/1.1\r\n
> Host: api.flickr.com\r\n
> Accept: */*\r\n
> Content-Length: -1\r\n
> Content-Type: application/x-www-form-urlencoded\r\n
> Expect: 100-continue\r\n
> ATS goes ahead with this request and connects to the origin and passes the
> invalid content length.
> Preferable, and consistent with the spec, ATS should immediately respond to
> the client with an error.
> RFC-2616 Section 14.13 says 'Any Content-Length greater than or equal to zero
> is a valid value.' I interpret that as a negative content length value is
> invalid.
> I propose that ATS respond with a '400 Invalid Request' for PUT/POST/PUSH
> requests when the user provided content-length is less than 0.
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