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From Jeff Trawick <traw...@gmail.com>
Subject Re: [users@httpd] Why does a DELETE transaction check for locks on Parent Collection
Date Thu, 27 Sep 2012 00:35:44 GMT
adding dev@...

On Wed, Sep 26, 2012 at 4:53 PM, Bennett, Tony <Bennett.Tony@con-way.com> wrote:
> Environment:
>         Version:            2.2.16
>         Platform OS:    AIX 6.1
>         Configuration:  WebDav enabled
>         Client:     Windows 7 "Mapped Network Drive"
>
> Here is the interaction:
>
> Client  sends a PUT
> Server  responds with a 200
> Client  sends a LOCK request
> Server  responds with a 200 and this header is in the response:
>                 Lock-Token: <opaquelocktoken:f86e1996-0726-11e2-b22c-c30f656528a6>
> Client  sends a DELETE and includes this header in the request:
>                 If: (<opaquelocktoken:f86e1996-0726-11e2-b22c-c30f656528a6>)
> Server  responds with a 424 Failed Dependency and includes this text in its response
body:
>        <?xml version="1.0" encoding="utf-8"?>
>        <D:multistatus xmlns:D="DAV:">
>        <D:response>
>        <D:href>/TEST_DIR</D:href>
>        <D:status>HTTP/1.1 412 Precondition Failed</D:status>
>        <D:responsedescription>A validation error has occurred on the parent resource,
>        preventing the operation on the resource specified by the Request-URI. The error
was:
>        The precondition(s) specified by the "If:" header did not match this resource.
At
>        least one failure is because: a State-token was supplied, but it was not found
in the
>        locks on this resource.</D:responsedescription>
>        </D:response>
>        </D:multistatus>
>
> Here is a subset of the Apache Error Log:
>       Could not DELETE /TEST_DIR/~$EXCEL_File.xlsx due to a failed precondition (e.g.
locks).  [424, #0]
>      (11)Resource temporarily unavailable: An error occurred on another resource, preventing
the requested operation on this resource.  [424, #0]
>
> I tried locking/deleting with cadaver, which worked.... it had a slightly different "If"
header:
>      If: <http://dmsa.con-way.com/TEST_DIR/~%24EXCEL_File.xlsx> (<opaquelocktoken:fec89268-081a-11e2-a1d7-c30f65659e0a>)
>
> My question is why did Apache check for the "opaquetoken" against the parent collection
when the request came from Win7...???
>
> I can't find a requirement to do so in the standard (RFC2518 or RFC4918).
>
> NOTE:  I tried locking/deleting with cadaver, which worked.... it had a slightly different
"If" header:
>      If: <http://dmsa.con-way.com/TEST_DIR/~%24EXCEL_File.xlsx> (<opaquelocktoken:fec89268-081a-11e2-a1d7-c30f65659e0a>)
>
> Any insight would be helpful.
>
> -tony
>
>
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