topic Re: Error 500 Maximum request length exceeded in ArcGIS Web AppBuilder Questions

Error 500 Maximum request length exceeded

CCWeedcontrol — Fri, 13 Jan 2017 19:13:23 GMT

I have an app built with Web Appbuilder Dev 2.2 with some layers off of ArcGis Online. I down loaded it and put it on my IIS. with a proxy. It seems as when i try to print with a certain layer i get print error. Network tab indicates the following. I am not sure what this means other than the maximum request length exceeded. Any help would be great.

Server Error in '/DotNetProxy2' Application.

Maximum request length exceeded.Exception Details: System.Web.HttpException: Maximum request length exceeded.

HttpException (0x80004005): Maximum request length exceeded.]    System.Web.HttpRequest.GetEntireRawContent() +11949368    System.Web.HttpRequest.get_InputStream() +54    proxy.readRequestPostBody(HttpContext context) +30    proxy.ProcessRequest(HttpContext context) +3180    System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +508    System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +92

Re: Error 500 Maximum request length exceeded

RobertScheitlin__GISP — Fri, 13 Jan 2017 19:21:12 GMT

So do you have all print requests to your server going through the proxy? Did you define your ArcGIS Server that has the print service in your proxies proxy.config?

Re: Error 500 Maximum request length exceeded

CCWeedcontrol — Fri, 13 Jan 2017 19:30:15 GMT

I don't have server, everything is through ArcGIS online, i do have a proxy with utility.arcgisonline.com print service. It only does this to one layer the other layers print fine.

I am quite not sure what this error means.

Re: Error 500 Maximum request length exceeded

RobertScheitlin__GISP — Fri, 13 Jan 2017 19:34:01 GMT

It is probably the fact that that layer is the only one that needs to be proxied due to the complexity. Do you have utility.arcgisonline.com added to your proxies proxy.config?

Re: Error 500 Maximum request length exceeded

CCWeedcontrol — Fri, 13 Jan 2017 20:01:42 GMT

The layer is not complex at all, it has maybe 1800 polygons. the map of the application only has two layers.

yes i have the following in the proxy.config file.

Re: Error 500 Maximum request length exceeded

RobertScheitlin__GISP — Fri, 13 Jan 2017 20:07:46 GMT

And in the WAB apps main config.json do you have the proxy and any rules set?

Re: Error 500 Maximum request length exceeded

CCWeedcontrol — Fri, 13 Jan 2017 21:36:46 GMT

yes i have the following

"wabVersion": "2.2",
"isTemplateApp": true,
"isWebTier": false,
"httpProxy": {
    "useProxy": true,
    "alwaysUseProxy": false,
    "url": "",
    "rules": [{

"urlPrefix": "http://***.maps.arcgis.com/",
"proxyUrl": "http://***.***.***/DotNetProxy2/proxy.ashx"
},{
"urlPrefix": "http://services6.arcgis.com",
"proxyUrl": "http://***.***.***/DotNetProxy2/proxy.ashx"
},{
"urlPrefix": "https://utility.arcgis.com",
"proxyUrl": "http://***.***.***/DotNetProxy2/proxy.ashx"
},{
"urlPrefix": "http://utility.arcgisonline.com",
"proxyUrl": "http://***.***.***/DotNetProxy2/proxy.ashx"

Re: Error 500 Maximum request length exceeded

RobertScheitlin__GISP — Fri, 13 Jan 2017 21:50:27 GMT

Hmm..

That does not make much sense then. The error you have seem to be what you would expect to see when your proxyurl request has exceeded the max url length.

Are you using v1.1 of the proxy?

Re: Error 500 Maximum request length exceeded

CCWeedcontrol — Fri, 13 Jan 2017 23:28:09 GMT

Ya i can't make sense of it either.

per the proxy.ashx i am on Version 1.1.1.bata.

After some playing around i was able to get the layer (SubD) to print with out error by adding the layer "SubD" that was already hosted on Arcgis online as just a feature layer by using the "Add Item by Web",which put it into "http://utility.arcgis.com/usrsvcs/servers/9897d777586c4d47a6c5d50fc0b9ad1b/rest/services/SubD/FeatureServer ". I was able to add the "http://utility.arcgis.com/usrsvcs/servers/9897d777586c4d47a6c5d50fc0b9ad1b/rest/services/SubD/FeatureServer " to the map. for some reason it did not like it stored in the "http://services6.arcgis.com/885XQwwhV5bcCoLj/arcgis/rest/services/SubD/FeatureServer ". I am lost to why i had to go this route.

From my My Content i clicked on "Add Item from web"

for theType I used "ArcGIS Server web service"

Put my credentials and checked "Store credentials with service item.Do not prompt for authentication"

give it a name and tags

clicked Add Item.

Re: Error 500 Maximum request length exceeded

CCWeedcontrol — Tue, 17 Jan 2017 16:27:17 GMT

I am trying to understand the error, so what is the max length allowed?

Based on the network is thisthe URL request?

http://NameOfServer/DotNetProxy2/proxy.ashx?http://utility.arcgisonline.com/arcgis/rest/services/Utilities/PrintingTools/GPServer/Export%20Web%20Map%20Task/execute

Re: Error 500 Maximum request length exceeded

RobertScheitlin__GISP — Tue, 17 Jan 2017 16:38:32 GMT

If that was the URL it was complaining about then it would not exceed the limit.

Re: Error 500 Maximum request length exceeded

CCWeedcontrol — Sun, 12 Dec 2021 02:46:57 GMT

I had to increase the runtime time out and max requestlength in the web.config file. Now it works fine

like so.

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation debug="false" targetFramework="4.0"/>
  </system.web>
  <system.web>
<httpRuntime executionTimeout="100000" maxRequestLength="214748364" />
</system.web>
  <system.diagnostics>
    <switches>
      <add name="TraceLevelSwitch" value="Info" />
    </switches>
    <trace autoflush="true" indentsize="4">
      <listeners>
        <add name="agsProxyLogListener" type="System.Diagnostics.TextWriterTraceListener"
             initializeData="C:\Temp\Shared\proxy_logs\auth_proxy.log" />
        <remove name="Default" />
      </listeners>
    </trace>
  </system.diagnostics>
</configuration>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Error 500 Maximum request length exceeded

SigamGeo — Fri, 05 Apr 2019 16:21:42 GMT

Thank you, to add the

<system.web>
<httpRuntime executionTimeout="100000" maxRequestLength="214748364" />
</system.web>

section to the Web.config of my dotnet proxy resolved my attachment size limit (ArcGIS enterprise/portal).

Re: Error 500 Maximum request length exceeded

germyrinn — Wed, 06 Oct 2021 06:46:47 GMT

If you are using IIS for hosting your application, then the default upload file size is 4MB. To increase it, please use this below section in your asp.net web.config -

<configuration>
<system.web>
<httpRuntime maxRequestLength="1048576" />
</system.web>
</configuration>
For IIS7 and above, you also need to add the lines below:

<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1073741824" />
</requestFiltering>
</security>
</system.webServer>
Note:

maxRequestLength is measured in kilobytes
maxAllowedContentLength is measured in bytes