topic Re: error trying to post an attachment in ArcGIS Runtime SDK for iOS Questions

error trying to post an attachment

ChrisRiver — Sun, 30 Sep 2012 19:51:58 GMT

AGSAttachmentManager *attachmentManager = [featureLayer attachmentManagerForFeature:feature]; attachmentManager.delegate = self; [attachmentManager addAttachmentAsJpgWithImage:image name:@"New Image"]; [attachmentManager postLocalEditsToServer];

results in:

Domain=org.brautaset.json.parser.ErrorDomain Code=0 "Illegal start of token [<]" UserInfo=0x910380 {NSLocalizedDescription=Illegal start of token [<]}

Any ideas?

Re: error trying to post an attachment

NimeshJarecha — Mon, 01 Oct 2012 17:57:12 GMT

Is this "feature" belong to feature layer (feature.layer has to be feature layer)? If yes, feature layer's "attachments" property is TRUE?

Regards,
Nimesh

Re: error trying to post an attachment

ChrisRiver — Mon, 01 Oct 2012 19:59:56 GMT

Thanks for your response Nimesh!

Yes, feature belongs to featureLayer. feature is obtained using the featureLayer:featureWithTemplate method.
I then add a few attributes to the feature, then perform the addFeature operation. Once features are added I invoke the addAttachmentAsJpgWithImage method with the image, then postLocalEdits.

..and yes, featureLayer's attachment property is set to true.

Hope this helps!

Re: error trying to post an attachment

ChrisRiver — Tue, 02 Oct 2012 17:56:53 GMT

As a side note, I'm pretty sure the service is set up correctly as I was able to upload an attachment using the web interface.

Re: error trying to post an attachment

NimeshJarecha — Tue, 02 Oct 2012 17:58:27 GMT

Are you getting error for your feature layer or any public feature layer as well? If all feature layers then please post a sample application here so I can have a look at it.

Regards,
Nimesh

Re: error trying to post an attachment

ChrisRiver — Wed, 03 Oct 2012 11:23:28 GMT

Thanks again Nimesh.

I just Saved an attachment to the public feature layer without a problem, so it would seem the issue with with my feature class.

There are a few differences between the public layer and mine, though seemingly insignificant for the most part. One of the differences though, is that my feature class is of type table, not feature layer. Could this be causing an issue?

Re: error trying to post an attachment

NimeshJarecha — Wed, 03 Oct 2012 17:19:19 GMT

The table should not make any difference. It should just work. Are you testing this on device or simulator? If device, then are you able to browse to rest end point of the layer in device browser?

Regards,
Nimesh

Re: error trying to post an attachment

NimeshJarecha — Mon, 08 Oct 2012 15:38:26 GMT

Chris,

Any update on this?

Regards,
Nimesh

Re: error trying to post an attachment

ChrisRiver — Wed, 10 Oct 2012 15:14:23 GMT

Hi Nimesh, thanks for checking in.

I still have not found a solution to this issue. The "[<]" leads me to believe that the server is returning an html error page, but I have not yet been able to isolate the actual error. I have set up a way to sniff for packet traffic to and from my iPad device, but have had to move on to other functionality for the project I'm working on, so haven't had a chance to pursue it any further.

I will update you when I pick up this ball again. Meanwhile if you have any insights of course they'd be well received 🙂

Thanks

Re: error trying to post an attachment

NimeshJarecha — Wed, 10 Oct 2012 15:54:53 GMT

Yes, your guess is correct. Server returns HTML which JSON parser fails to parse and you have that error. Intercepting the request and response will help you. Let me know if you need further help with this whenever you get a chance to look at it.

Regards,
Nimesh

Re: error trying to post an attachment

ChrisRiver — Thu, 25 Oct 2012 14:38:55 GMT

Ok, so I'm back at this again.

What does postLocalEditsToServer /actually/ do? When I call this method I am seeing no http traffic coming out of the device. I just get the error:

Domain=org.brautaset.json.parser.ErrorDomain Code=0 "Illegal start of token [<]" UserInfo=0x232b8ff0

Does postLocalEditsToServer initially try to convert the data into JSON format before sending it off? That would explain why it is getting hung up and I'm not seeing any traffic (if it is choking on the json conversion process).

Thanks

Re: error trying to post an attachment

ChrisRiver — Fri, 26 Oct 2012 15:55:24 GMT

I was finally able to capture and decrypt some of the traffic coming back from the addAttachment request. A couple of things I noticed.

1. I am receiving 403 Forbidden response (which would be the source of the json parse error)
2. The token string seems to be passed in the request querystring, event though it is a POST. This doesn't make much sense to me, but if there is no token being passed in the header that would explain why I'm getting a 403 (right?)

Any thoughts?

Thanks!

Re: error trying to post an attachment

NimeshJarecha — Fri, 26 Oct 2012 16:29:08 GMT

1. Which version of ArcGIS Server are you using?
2. I'm assuming based on information on thread so far that server is secured with token authentication. Is this HTTPS? or HTTP?
3. Could you please post the request/response information you captured (remove sensitive information).

Regards,
Nimesh

Re: error trying to post an attachment

ChrisRiver — Fri, 26 Oct 2012 16:35:17 GMT

1. Which version of ArcGIS Server are you using?

10.1

2. I'm assuming based on information on thread so far that server is secured with token authentication. Is this HTTPS? or HTTP?

Yes that is correct. Sorry if I didn't make this clear from the beginning. it is https

3. Could you please post the request/response information you captured (remove sensitive information).

The best I can do is the request/response header info:
Request:

POST /arcgis/rest/services/nih/IncidentMgt/FeatureServer/4/0/addAttachment?token=[MY TOKEN] HTTP/1.1
Host: [HOST IP]
Referer: arcgisios
Accept-Encoding: gzip, deflate
Content-Type: multipart/form-data; boundary=AaB03x
Accept-Language: en-us
Accept: */*
Cookie: AGS_ROLES="CMjxZtgDgUJqTp/x20IHHvxNuLoNDmLPZRtlQhmgzqDVz3AOXJf4Qw=="
Content-Length: 392277
Connection: keep-alive
User-Agent: ArcGISiOS-2.3.2/6.0/x86_64

Response:

HTTP/1.1 403 Forbidden
Cache-Control: private
Content-Type: text/html;charset=utf-8
Content-Encoding: gzip
Server: Microsoft-IIS/7.5
Server: Apache-Coyote/1.1
X-AspNet-Version: 2.0.50727
X-Powered-By: ASP.NET
Date: Fri, 26 Oct 2012 17:13:18 GMT
Content-Length: 356

Thanks!

Re: error trying to post an attachment

ChrisRiver — Fri, 26 Oct 2012 17:52:33 GMT

Through more tedious digging through wireshark I found:

"Error: Error in uploading attachment file, File size or type not supported for this service"

The problem is that I can upload the same image file using the web interface.

Thoughts?

Re: error trying to post an attachment

NimeshJarecha — Fri, 26 Oct 2012 17:58:26 GMT

What is the size of file? Are you specifying a file extension?

In the following code line...specify "NewImage.jpg"
[attachmentManager addAttachmentAsJpgWithImage:image name:@"New Image"];

Regards,
Nimesh

Re: error trying to post an attachment

ChrisRiver — Fri, 26 Oct 2012 18:22:19 GMT

Thank you Nimesh, that did it.

If you have a second maybe you could pass on that the documentation here:
http://resources.arcgis.com/en/help/runtime-ios-sdk/concepts/index.html#/Attachment_Manager/00pw00000059000000/

Does not specify that this is required and it shows an example of an image name /without/ a file extension.

Thanks again!

Re: error trying to post an attachment

NimeshJarecha — Fri, 26 Oct 2012 21:00:27 GMT

Great! Good to know that it's working now. We'll update the documentation.

Regards,
Nimesh