topic Re: Solve route and buffer the route geometry in ArcGIS JavaScript Maps SDK Questions

Solve route and buffer the route geometry

MuraliSridhar — Tue, 15 Dec 2015 20:59:21 GMT

I am trying to the solve the route between 2 points and immediately buffering the route geometry.

I can able to solve the route by using the "Esri/resource-proxy" [sourcehttps://github.com/Esri/resource-proxy/releases], changed the proxy config [with routing URL, client id and client secret] and added proxy rule in my code.

Proxy rule:

urlUtils.addProxyRule({

urlPrefix: "tasks.arcgisonline.com",

proxyUrl: "http://xxxxx/DotNet/proxy.ashx"

});

I have been prompted with ArcGIS online signin popup with user name and password,

After successful authentication, I am passing the route geometry to do and show buffer. But I am getting below exception

"Unable to load http://xxxxx/DotNet/proxy.ashx?http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer/buffer status: 0"

This time I am setting ""esriConfig.defaults.io.alwaysUseProxy = false", but still this request is using proxy

Question 1: How to get rid of sign in popup? I assumed given client Id and client secret will not prompt popup.

Question 2: How to make buffer request with proxy?

Thanks

Murali

Re: Solve route and buffer the route geometry

RobertScheitlin__GISP — Sat, 11 Dec 2021 21:29:20 GMT

Murali,

See this blog post for help: Setting up a Proxy | Support Services Blog

You need to add a proxy rule for the urls that are used in the directions requests. http://route.arcgis.com, http://traffic.arcgis.com
Make sure you have added the two urls above and the http://tasks.arcgisonline.com to the proxy.config

<serverUrl url="http://route.arcgis.com" clientId="xxxx" clientSecret="xxxx" rateLimit="600" rateLimitPeriod="60" matchAll="true" />
<serverUrl url="http://traffic.arcgis.com" clientId="xxxx" clientSecret="xxxx" rateLimit="600" rateLimitPeriod="60" matchAll="true" />
<serverUrl url="http://tasks.arcgisonline.com" matchAll="true" />

Re: Solve route and buffer the route geometry

MuraliSridhar — Tue, 15 Dec 2015 21:26:17 GMT

Robert,

Thanks for your reply.

1. I already have 2 urls in my proxy config

2. Sorry. My 2nd question is wrong. Actually I don't want to use my proxy for buffer [gemonetryService] .

Though I set "esriConfig.defaults.io.alwaysUseProxy = false" during my buffer request, it sill using the proxy.

Re: Solve route and buffer the route geometry

RobertScheitlin__GISP — Tue, 15 Dec 2015 21:33:51 GMT

Murali,

OK great that you have the two urls in your proxy config now you need to add the rule to your JS code to tell the API to use the proxy if the urls are used

urlUtils.addProxyRule({

urlPrefix: "http://route.arcgis.com",

proxyUrl: "http://xxxxx/DotNet/proxy.ashx"

}, {

urlPrefix: "http://traffic.arcgis.com",

proxyUrl: "http://xxxxx/DotNet/proxy.ashx"

});

2. Remove the http://tasks.arcgisonline.com from the proxy.config and from the urlUtils.addProxyRule

Re: Solve route and buffer the route geometry

MuraliSridhar — Tue, 15 Dec 2015 22:03:40 GMT

Robert,

1. My routing is working perfectly. Please let me know how to get rid of arcgis log in popup before routing for token validation.

2. I have not added any entry for geometryservice in proxy.config and also no proxy rule in JS.

Please find my below doBuffercode

function doBuffer(geometry) {

require(['esri/tasks/BufferParameters', 'esri/tasks/GeometryService',

'esri/config', 'esri/geometry/normalizeUtils', 'esri/urlUtils', ],

function (BufferParameters, GeometryService, esriConfig, normalizeUtils, urlUtils) {

esriConfig.defaults.geometryService = new GeometryService("http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");

esriConfig.defaults.io.proxyUrl = '/proxy/';

esriConfig.defaults.io.alwaysUseProxy = false;

//setup the buffer parameters

var params = new BufferParameters();

params.distances = [vmRoute.maxBufferRadius];

// params.bufferSpatialReference = { wkid: 4326 };

params.outSpatialReference = { wkid: 4326 }; //_map.spatialReference;

params.unit = GeometryService[vmRoute.bufferUnit.name];

esriConfig.defaults.geometryService.buffer(params, showBuffer);

});

}

Re: Solve route and buffer the route geometry

AndrewNault1 — Tue, 15 Dec 2015 22:10:30 GMT

This is a really good comment.

Re: Solve route and buffer the route geometry

RobertScheitlin__GISP — Tue, 15 Dec 2015 22:11:49 GMT

Murali,

Again you need to add the rules to your JS code to tell the API to use the proxy for the route urls.

urlUtils.addProxyRule({

urlPrefix: "http://route.arcgis.com",

proxyUrl: "http://xxxxx/DotNet/proxy.ashx"

}, {

urlPrefix: "http://traffic.arcgis.com",

proxyUrl: "http://xxxxx/DotNet/proxy.ashx"

});

As long as you are using the clientId and clientSecret for your org in the proxy.config for the route and traffic url you should not receive a login prompt.

If you do not have http://tasks.arcgisonline.com in your proxy rules then it should not be re-directing though your proxy, so I am not sure what is wrong there.

Re: Solve route and buffer the route geometry

MuraliSridhar — Tue, 15 Dec 2015 22:28:05 GMT

Robert,

1. I have my proxy config with clientId and clientSecret for the route and traffic url. I also have urlUtils.addProxyRule for route in my JS since I am using routing alone for now. Still its prompting for my login popup, upon giving valid credentials I am getting the route without any issues.

2. As I said earlier I do not have task URL in proxy config and proxy rule in JS, but still my buffer request are re-directing through my proxy.

Appreciate any help on this.

Re: Solve route and buffer the route geometry

RobertScheitlin__GISP — Tue, 15 Dec 2015 22:34:37 GMT

Murali,

So have you open your browsers web tools and watched the network traffic to see what url is not making it through your proxy so that you are getting prompted for login?

Re: Solve route and buffer the route geometry

MuraliSridhar — Tue, 15 Dec 2015 23:12:05 GMT

I have cleared my browser cache and launched the app again. I am getting below exception now

Re: Solve route and buffer the route geometry

MuraliSridhar — Tue, 15 Dec 2015 23:13:57 GMT

And the response is

dojo.io.script.jsonp_dojoIoScript9._jsonpCallback({"error":{"code":499,"message":"Token Required","details":[]}});

It seems my proxy is not working now.

Re: Solve route and buffer the route geometry

RobertScheitlin__GISP — Wed, 16 Dec 2015 01:16:00 GMT

Based on the fact that you where getting a login prompt before I would say your proxy has not been working properly yet.

If you look t this samples description you should get some clues:

Directions | ArcGIS API for JavaScript

//travelModesServiceUrl option points to logistics service hosted from ArcGIS Online
        //by indicating this URL, a login prompt should not display
        var directions = new Directions({
          map: map,
          travelModesServiceUrl: "http://utility.arcgis.com/usrsvcs/servers/cdc3efd03ddd4721b99adce219629489/rest/services/World/Utilities/GPServer"
        },"dir");
        directions.startup();

Re: Solve route and buffer the route geometry

MuraliSridhar — Wed, 16 Dec 2015 15:17:14 GMT

Robert,

I fixed the routing part yesterday. The issue is proxy is expecting token in config file or in URL.

I also found the reason for second issue do and show buffer, the issue is GeometryService.buffer() is submitting with request method as POST but it is GET method.

My Code :

esriConfig.defaults.geometryService = new GeometryService(geometryServiceUrl);

esriConfig.defaults.io.proxyUrl = '/proxy/';

esriConfig.defaults.io.alwaysUseProxy = false;

esriConfig.defaults.geometryService.buffer(params, showBuffer);

param = bufferparameter and show buffer is callback method.

I am using the same code in another widget, its submitting as GET.

The only difference is, In this widget first I am using the "Esri/resource-proxy" for routing and I am using '/proxy/' and alwaysUseProxy = false for GeometryService.

Will that is making any difference?

Is there any way to set request method as GET for GeometryService.buffer() manually?

Thanks

Murali

Re: Solve route and buffer the route geometry

RobertScheitlin__GISP — Wed, 16 Dec 2015 15:30:55 GMT

Murali,

Esri will switch to POST automatically when the url string exceeds the length that your particular browser can support with GET.

You could look into setRequestPreCallback

esri/request | API Reference | ArcGIS API for JavaScript