topic Re: DojoRequest in Web app builder in ArcGIS Web AppBuilder Questions

DojoRequest in Web app builder

VenkataSrikanthDasari — Mon, 11 Dec 2017 22:11:00 GMT

I am requesting an image in the Dojo Request and it is appending ?wab_dv=2.6 in the url and failed to query in the custom widget..

Re: DojoRequest in Web app builder

RobertScheitlin__GISP — Tue, 12 Dec 2017 00:39:38 GMT

Srikanth,

What does your esriRequest url look like Extactly?

The WAB env.js has some tests it does on url to determine if it appends the WAB version to the url.

Here are the conditions that it will not append the deploy version to:

http:// or https:// at the beginning of the url
/proxy.js at the beginning of the url
// at the beginning of the url

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Tue, 12 Dec 2017 02:57:01 GMT

Thank you.

I kept one more condition in env.js file to access shared path and as a security concern images are not keeping in the IIS.

Here is the url for the image which is not accessible in IE ..

Url: \\NetworkDrive\TestImages\Image1.jpg

And chrome is showing the below error.

Failed to load file://sdasari-spro/TestImages/DSCN0031.JPG: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https.
l @ init.js:141
20:49:28.646 init.js:141 Failed to load file://sdasari-spro/TestImages: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https.

Please suggest me on this and would be highly appreciated.

Cheers

Srikanth Dasari

Re: DojoRequest in Web app builder

JunshanLiu — Tue, 12 Dec 2017 08:08:59 GMT

Can you modify this function appendDeployVersion in env.js?

Re: DojoRequest in Web app builder

RobertScheitlin__GISP — Tue, 12 Dec 2017 11:52:18 GMT

Srikanth,

and as a security concern images are not keeping in the IIS

Can you elaborate on security concern. There is no security concern when having images in a network shared folder that is setup as a virtual directory in IIS.

If you were using a virtual directory in IIS then you would not have this issue at all. You can also add a check to the env.js appendDeployVersion function as Jushan is talking about.

for example:

if(/^http(s)?:\/\//.test(url) || /^\/proxy\.js/.test(url) || /^\/\//.test(url) || /^\\\\/.test(url)){

But I really wish there was just a way to turn this feature off as I have had to modify this function before myself to look for query in the url:

if(/^http(s)?:\/\//.test(url) || /^\/proxy\.js/.test(url) || /^\/\//.test(url) || /\/query$/.test(url)){

Which I don't think is good practice for a widget developer to have to tell their users they have to modify a core WAB file just to use their widget.

junshan_liu-esristaff‌

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Tue, 12 Dec 2017 21:02:18 GMT

Hi Robert,

Thanks for the help and I suggested virtual directory in the IIS. Now the PROBLEM is client is running web app builder using apache and we deployed/created the virtual directory in IIS.

Then I am getting the error while accessing the image is

1. OPTIONS https://hoeapp133/PhotosphereImages/images/ 404 (Not Found)

2. Response for preflight has invalid HTTP status code 404

Modification not required in env.js with the deployment in the virtual directory.

Thanks & Regards,

Srikanth Dasari

Re: DojoRequest in Web app builder

RobertScheitlin__GISP — Tue, 12 Dec 2017 21:05:16 GMT

Srikanth,

Are you specifying a specific image in the url?

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Tue, 12 Dec 2017 21:11:56 GMT

Image and as well as the folder...

http://servername/VirtualDirectory/images

http://servername/VirtualDirectory/

Cheers,

Srikanth Dasari

Re: DojoRequest in Web app builder

RobertScheitlin__GISP — Tue, 12 Dec 2017 22:08:19 GMT

Srikanth,

OK, both of those urls are directory urls and unless you have set the Virtual Directory to allow directory browsing and you add code to deal with the return of that then you are not going to get anywhere.

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Wed, 13 Dec 2017 07:14:07 GMT

CORS Issue.. Added the new URL in the proxy.config and using Proxy.ashx.

I deployed my files in the IIS and client is running web app builder using Node.js.. so unable to access the external URL.

Thanks for the help and highly appreciated.

Cheers,

Srikanth Dasari

Re: DojoRequest in Web app builder

JunshanLiu — Wed, 13 Dec 2017 09:54:50 GMT

I agree with you Robert. How about set the deployVersion = “” if your widget wants to disable this feature?

Thanks,

Junshan Liu

Esri R&D Center Beijing

19th Floor, Phoenix Place Office Tower A, 5A Shuguang Xili

Chaoyang District | Beijing 100028 | China

T (86 10) 57302700

junshan_liu@esri.com<mailto:junshan_liu@esri.com> | esri.com

The Science of Where

Thriving in China, Empowering the World

发件人: Robert Scheitlin, GISP

发送时间: Tuesday, December 12, 2017 7:53 PM

收件人: Junshan Liu <junshan_liu@esri.com>

主题: Re: - Re: DojoRequest in Web app builder

GeoNet <https://community.esri.com/?et=watches.email.thread>

Re: DojoRequest in Web app builder

reply from Robert Scheitlin, GISP<https://community.esri.com/people/rscheitlin?et=watches.email.thread> in Web AppBuilder for ArcGIS - View the full discussion<https://community.esri.com/message/735630-re-dojorequest-in-web-app-builder?commentID=735630&et=watches.email.thread#comment-735630>

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Wed, 13 Dec 2017 21:46:51 GMT

Robert,

Life is revolving around the ESRI issues...

For resolving the CORS Issue, I tried with Proxy.ashx file and unfortunately client is using Proxy.js file.. then i configure the url's in the authorizedCrossOriginDomains in the config.json.... including port number

See the below example process flow and sample URL's

http://server1:3344/webappbuilder/apps/3 -----> trying to access the files residing in IIS --------> Virtual Directory which is http://server1//VD/Images

1. Enabled Directory browsing

2. Added Access-Control-Allow-Origin, Access-Control-Allow-Headers for the VD in IIS.

3. authorizedCrossOriginDomains:['server1:3344','server1:443']

Am i missing anything else....

Cheers,

Srikanth Dasari

Re: DojoRequest in Web app builder

RobertScheitlin__GISP — Wed, 13 Dec 2017 22:15:17 GMT

Srikanth,

You just need to educate the client that running WAB Dev is good for development purposes but when development is done the app needs to downloaded and deployed to web server for production and then proxy.js is no longer an issue and the proxy.ashx will be used just like you have.

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Wed, 13 Dec 2017 23:03:43 GMT

Robert,

Client Environment is up and running... we can't change in the current situation...End users are using the application..

Any workaround for the above query...

Cheers,

Srikanth Dasari

Re: DojoRequest in Web app builder

RobertScheitlin__GISP — Wed, 13 Dec 2017 23:17:38 GMT

I don’t know of a way to resolve the access issue then. What is boils down to is the client is not using the environment as it is intended and you as the consultant/developer need to make them understand.

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Thu, 14 Dec 2017 00:00:55 GMT

I am not in the client location since beginning and someone else setup the environment...

Cheers,

Srikanth Dasari

Re: DojoRequest in Web app builder

JunshanLiu — Thu, 14 Dec 2017 02:29:41 GMT

There is http proxy config in app config, have you tried this?

https://developers.arcgis.com/web-appbuilder/api-reference/app-configuration.htm

Thanks,

Junshan Liu

Esri R&D Center Beijing

19th Floor, Phoenix Place Office Tower A, 5A Shuguang Xili

Chaoyang District | Beijing 100028 | China

T (86 10) 57302700

junshan_liu@esri.com<mailto:junshan_liu@esri.com> | esri.com

The Science of Where

Thriving in China, Empowering the World

发件人: srikanth dasari venkata

发送时间: Thursday, December 14, 2017 5:47 AM

收件人: Junshan Liu <junshan_liu@esri.com>

主题: Re: - Re: DojoRequest in Web app builder

GeoNet <https://community.esri.com/?et=watches.email.thread>

Re: DojoRequest in Web app builder

reply from srikanth dasari venkata<https://community.esri.com/people/sri_kanth0526?et=watches.email.thread> in Web AppBuilder for ArcGIS - View the full discussion<https://community.esri.com/message/736015-re-dojorequest-in-web-app-builder?commentID=736015&et=watches.email.thread#comment-736015>

Re: DojoRequest in Web app builder

VenkataSrikanthDasari — Thu, 14 Dec 2017 05:23:34 GMT

I will try and let you know and it seems it will work..

Hope for the best...

Thanks Robert and Junshan Liu for the help.