How to call an API via Code Activity Plugin on Microsoft Dynamics 365 Version 1612 (9.0.2.3034) (DB 9.0.2.3034) on-premises.

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Posted on by Jishnu Thapa

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Hi all,

I'm working on a CodeActivity for Microsoft Dynamics 365 Version 1612 (9.0.2.3034) (DB 9.0.2.3034) on-premises.
I am trying to call an API but It gives an "Unable to connect to the remote server" error. The code I wrote for that works fine in a console application, but it fails in the plugin. The code looks like the following: I am using .Net Framework 4.5.2.

string URL = "xxxxxx.xxxx.it/.../xxx
System.Net.WebClient webClient = new System.Net.WebClient();
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
webClient.Headers.Add("Authorization", "Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
var result = webClient.DownloadString(URL);

Can you guys help me?

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Diana Birkelbach 140 Most Valuable Professional on at

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RE: How to call an API via Code Activity Plugin on Microsoft Dynamics 365 Version 1612 (9.0.2.3034) (DB 9.0.2.3034) on-premises.

It could be a Proxy issue, usually the PlugIn is running behind the firewall.

I've made such calls using HttpClient

HttpClientHandler handler = new HttpClientHandler();

WebProxy proxy = new WebProxy( "xxx_proxyServer", port);

handler.Proxy = proxy;

using( HttpClient httpClient = new HttpClient(handler as HttpMessageHandler)){

//....

}

As far as I remember, the "xxx_prosyServer" should be a name, not an IP.

Hope this helps!

Kind regards,

Diana