[Tickets #12486] Re: Can't download attachments over ActiveSync

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Ticket URL: http://bugs.horde.org/ticket/12486
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  Ticket             | 12486
  Updated By         | ryu at ryux.org
  Summary            | Can't download attachments over ActiveSync
  Queue              | Synchronization
  Version            | Git master
  Type               | Bug
  State              | Feedback
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             | Michael Rubinsky
+New Attachment     | capture_image_getAttachment.dump
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ryu at ryux.org (2013-08-14 18:08) wrote:

Ok, good news for you ;)
I finish new tests and all is clear for me, I think

This time, i was afraid than the content type was not sent because of  
the ouput buffer. And it was the case.

You returns the Content-Type at the end of the method _handle()  
(because you don't know if it is multipart or no) in  
ActiveSync_Request_ItemOperations.php.
And so, in case of bigger files which are greater than 1MB, the fluh  
send the first part of the stream withtout the valuable header...

I add a new dump from the GetAttachment command. In this case, the  
content-type is image/jpeg. And all is good.

Then, I removed my previous patch with the output buffer size and  
forced the header to Content-Type: application/vnd.ms-sync.wbxml  
before to read the stream.
All was ok.
You're right with the buffer. Not needed to change it.

So, the questions are :

1. Why the content-type is sent with a bad value (text/html, see the  
dump). My feeling is the Apache server which autodetects and adds a  
type. (And fails with the binary of the wbxml and add text/html, but  
success with the GetAttachment command).

2. Why the client makes a new call  and breaks the connection after  
retrieving the first part (1MB) of the file. Maybe it checks the  
format, does not detect a valid HTML format and retry one more time.

I think I correctly sum up the problem.

I'm going to check if I can remove default Content-Type in apache.

What do you think about this deeper investigation ?



ryu at ryux.org (2013-08-14 18:08) uploaded: capture_image_getAttachment.dump

http://bugs.horde.org/h/services/download/?app=whups&actionID=download_file&file=capture_image_getAttachment.dump&ticket=12486&fn=%2Fcapture_image_getAttachment.dump