topic Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask... in ArcGIS Runtime SDK for iOS Questions

ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Tue, 05 Oct 2021 04:10:34 GMT

Hi there,

I'm loading layers in a feature service to map using AGSGeodatabaseSyncTask. The feature service is not secured. Everything works just fine but occasionally not always though, the ArcGIS credential dialog appears on loading the syncTask as shown in the attached image. Once the dialog is out I can't skip or sign in as the sign in button is greyed out. The only way out is to kill the app...

let gdbSyncTask = AGSGeodatabaseSyncTask(url: url)

gdbSyncTask.load { (error) -> Void in

... loading layers to the map after gdbSyncTask loaded without error...

}

I tried to set the gdbSyncTask.credential property with a valid credential of username and password but the dialog still pops up randomly. How can I stop it popping up?

Thanks,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Tue, 05 Oct 2021 22:24:19 GMT

Further to the mix: the first time and second time load of gdbSyncTask are ok, but on the third time the load method gets an error of "Request Forbidden" in the completion block. Thanks.

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

NimeshJarecha — Wed, 06 Oct 2021 16:07:22 GMT

Hi Shimin,

If possible, can you please send us the reproducible code and all request/response log so we can investigate what is going on?

Regards,

Nimesh

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Thu, 07 Oct 2021 04:56:24 GMT

Hi Nimesh,

I created a reproducible Xcode project which is about 400 mb after zip. How can I send it to you?

Thanks,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

NimeshJarecha — Thu, 07 Oct 2021 17:36:13 GMT

Hi Shimin,

I've direct message with instruction to send me the project. Thank you!

Regards,

Nimesh

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Thu, 07 Oct 2021 22:43:44 GMT

Hi Nimesh,

Have uploaded the files to the site as instructed.

However, the uploading failed many times due to a hung Ajax request. Looked like the following uploads were appending to the previous failed uploads. If the file is somehow corrupted please provide a mailbox I'll send a Dropbox link to download from Dropbox.

Thanks a lot for your help.

Cheers,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

NimeshJarecha — Fri, 08 Oct 2021 16:55:05 GMT

Hi Shimin,

I was able to download the project and run. However, is feature service used in the project internal? When I try even in browser it gives me `403 Forbidden` error. See attached image.

Regards,

Nimesh

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Sun, 10 Oct 2021 23:01:29 GMT

Hi Nimesh,

Sorry the feature service was behind a geoblocking. The geoblocking has now been disabled temporarily. Could you please have another go?

Thanks,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

NimeshJarecha — Mon, 11 Oct 2021 16:10:20 GMT

Hi Shimin,

Thank you, I'm able to access the feature service now. Using your repro project, I tried to reproduce the issue multiple times but not able to do so. There are lot of layers in the feature service so it takes some time for them load and render on the map but no credential dialog pops up.

I suspect your geoblocking is playing part in credential dialog? The `403` errors are considered an authentication and somehow your geoblocking coming into picture and throws `403` error and credential dialog pops up.

Are you still able to reproduce the issue?

Regards,

Nimesh

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Tue, 12 Oct 2021 01:39:39 GMT

Hi Nimesh,

Yes I'm still able to reproduce the issue with the same repro project. Loading layers is ok first time tapping the Load Feature Layers button. As soon as the layers are fully loaded, tapping the button second time the credential dialog box pops up. Please see the attached images.

Thank you for your help.

Regards,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

NimeshJarecha — Tue, 12 Oct 2021 22:48:26 GMT

Hi Shimin,

Please add following code at the start of `viewDidLoad` which will create a log file with all request and responses. Once, you are able to reproduce the issue, upload the generated log file at the location I gave earlier.

let config = AGSRequestConfiguration.global()

config.debugLogFileURL = URL(fileURLWithPath: "path/to/Log.md")

config.debugLogDeleteBeforeEachRun = true

config.debugLogRequests = true

config.debugLogIncludeRequestHeaders = true

config.debugLogResponses = true

config.debugLogIncludeResponseHeaders = true

config.debugLogResponseTrimThreshold = 2000

Thank you!

Regards,

Nimesh

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Tue, 12 Oct 2021 23:30:13 GMT

Hi Nimesh,

Have uploaded the Log.md file.

Many thanks for your help!

Regards,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

NimeshJarecha — Wed, 13 Oct 2021 00:15:34 GMT

Hi Shimin,

Thanks for the log. I realized that the log did not capture the response for the request which produces the error as it did not finish. Can you please reproduce the issue and when dialog pops up, hit skip on it? When done, check which request returned with `403 - Request Forbidden` error? If you don't see the error, I would suggest using any third party app to log request response. May be a Charls Proxy or Fiddler etc.

Regards,

Nimesh

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Wed, 13 Oct 2021 00:36:05 GMT

Hi Nimesh,

Uploaded a new Log1.md file. As instructed, I hit the Skip five times and each time the dialog disappeared and came back very quickly. Checked the log file and there are a few 403 Request Forbidden errors.

Thank you very much for your help.

Regards,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

NimeshJarecha — Wed, 13 Oct 2021 16:48:07 GMT

Hi Shimin,

Thank you for the new log file. I analyzed the log file and particularly the HTTP responses and response headers. Based on that looks like your server setup has load balancer. The responses with response header Server = "" are working fine and responses which has Server = "awselb/2.0" are responding the HTTP status code 403. The response code 403 is considered as an authentication error and we prompt for the credential. You will have to figure out why that server responds with HTTP status code 403.

Regards,

Nimesh

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Wed, 13 Oct 2021 22:02:48 GMT

Hi Nimesh,

I forwarded your finding to our server people who are investigating. I'll report back how we go... Thank you so much for your help.

Cheers,

Shimin

Re: ArcGIS credential dialog pops up occasionally on loading AGSSyncTask...

ShiminCai — Sun, 31 Oct 2021 22:16:14 GMT

Hi Nimesh,

Our service people eventually figured out that The AWS Appplication load balancer throws a 403 if the WAF blocks something. The WAF is blocking due to the number of requests. Increasing the http request limit from 1000 to 5000 http requests from a single IP in 5 min period seemed to have stopped the credential box popping up. Thank you so much for your help.

Cheers,

Shimin