problem with attachments via a proxy page

Question

Hi I have a feature service being accessed via a proxy page so that it can be secured, and accessed using a dynamically generated token. (However, this problem appears to happen regardless of whether the service is secured - it's a proxy page issue). I am using the attachment inspector, out of the box in the Flex API. the problem is that new attachments do not hit the rest endpoint correctly. Instead of a standard response, I receive a string of HTML which represents the "Add Features" rest endpoint: Add Attachment (Feature ID: 420)

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Home > PointsEdit (FeatureServer) > sde.DBO.WWTW_Points > 420

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Add Attachment (Feature ID: 420)

Note: This operation is only supported via POST

So the POST which pushes an attachment to the endpoint is causing the service to respond with its HTML page prompt - as if the attachment data is not being delivered correctly. If I remove the proxy page and route the request directly, everything works correctly. I have stepped through the proxy page, and confirmed that the POST data does get transferred to the request to ArcGIS Server; it does seem to be pushing the bytestream across to the new request. I noticed though that the content type on the new request (inside the proxy) is defined as "application/x-www-form-urlencoded". However, the original content type posted from the Flex application is "multipart/form-data". I wonder if this is the problem - as it's binary data we're trying to push up as an attachment. I have briefly tried changing this to multipart/form-data in the proxy, but this causes the connection to close prematurely and the service request fails. I havent figured out why. Is there any further guidance here? Is there a known issue where attachments cannot be added via a proxy page connection?

AHay · Answer

I have been struggling with this for ages

Did you use the new proxy page from flex API help,

namely 
http://help.arcgis.com/en/webapi/flex/help/index.html#/Using_the_proxy_page/017p0000000v000000/

it asks for the proxy page info ( passwords etc) to be included in appsettings tag of webconfig.

Does anyone know the syntax i should use , i have tried a lot of variations and if i put anything in that tag my application throws a gen 500 error (get nothing at all) and if i remove tag i get application with no secured services ( i.e proxy page is not reachable)

any ideas

MarkWells · Answer

Dasa,

Thank you! This appears to have solved it. I must have been using an older version of the proxy code.

Mark

DasaPaddock · Answer

Are you using the proxy code from http://help.arcgis.com/en/webapi/flex/help/content/proxy.htm

These do pass through the "Content-Type".