HTTP requests to On-Premise Web API

(0) Share

Report

Posted on by Community Member

Hello,

I've seen a number of questions posted about how to execute Web API requests via HTTP external to the CRM, but I still am very unclear how to do this. It's rather frustrating that I can simply navigate to the ".../api/data/v8.0/" end point in my browser, but can't seem to access this via any other method. In PowerShell, I've tried the following code:

$headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
$headers.Add("Accept", 'application/json')
$headers.Add("OData-MaxVersion", '4.0')
$headers.Add("OData-Version", '4.0')

Invoke-WebRequest -Uri 'crmtest.regent.edu/.../v8.0' -Headers $headers -Credential Get-Credential

But I get this error:

Invoke-WebRequest : The underlying connection was closed: An unexpected error 
occurred on a send.
At line:6 char:1
+ Invoke-WebRequest -Uri 
'crmtest.regent.edu/.../v8.0 ...
+ 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpW 
   ebRequest) [Invoke-WebRequest], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell 
   .Commands.InvokeWebRequestCommand

I've tried the Invoke-RestMethod as well. Similar requests in JavaScript don't seem to yield requests either.

What am I doing wrong?

Many thanks,

Daniel Hines

Regent University

Christian Leadership to Change the World

*This post is locked for comments

I have the same question (0)

All responses (5)

Answers (0)

Sort by

joman 617 on at

Like (1)

Report
Copy link

Link copied!

First of all, check your URL in CRM -> Parameters -> Settings -> Resources for developers.

Then check this: msdn.microsoft.com/.../gg334279.aspx

Was this reply helpful? Yes No
Gopalan Bhuvanesh 11,401 on at

Like (1)

Report
Copy link

Link copied!

Hi

This (Invoke-WebRequest -Uri 'crmtest....) should work.

Please check the URL (Example: crmtest.regent.edu/.../accounts) in the browser.

Was this reply helpful? Yes No
Community Member on at

Like (0)

Report
Copy link

Link copied!
Thank you both for the responses. I was able to working in Powershell; however, I haven't been able to do so in Javascript.

$(function () { $.ajax ({ type: "GET", url: "rctrdevcrm.regent.edu/.../v8.0", dataType: 'json', async: false, headers: { "Authorization": "Basic " + btoa(USERNAME + ":" + PASSWORD) }, success: function (res) { console.dir(res); }, }).fail(function (e) { console.dir(e); }) });

Here's the error I'm getting:

XMLHttpRequest cannot load rctrdevcrm.regent.edu/.../v8.0. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8080' is therefore not allowed access.

Why can I navigate straight to the page in the browser, or access the data with PowerShell, Power BI, etc., but not via XMLHttpRequest?

Thanks in advance,

Daniel Hines

Was this reply helpful? Yes No
Suggested answer

joman 617 on at

Like (1)

Report
Copy link

Link copied!

Good day. You make cross-domain request, so browser don't do it.

You need to make a server, witch you are sending a request, give you a cookie, that allow cross-domain requests.

More info:

developer.mozilla.org/.../Access_control_CORS

or google: Access-Control-Allow-Origin

Was this reply helpful? Yes No
Community Member on at

Like (0)

Report
Copy link

Link copied!

Thank you for the links. Is this something I can configure on an on-premise instance of Dynamics CRM 2016 (not IFD)?

Was this reply helpful? Yes No