Calling a external web service in a SharePoint 2013 WebPart

I need to call a external web service in SharePoint 2013 WebPart. The web service URL is "http://abr.business.gov.au/abrxmlsearchRPC/AbrXmlSearch.asmx".

I created a ASP.NET web application to test the functionality firstly.
I added a server reference as a Web reference for this web service and then using the web service call but received the "Unable connect to remote server" error.

I changed to use "HttpWebRequest" e.g.
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("<service url>");

and then add a "webproxy" class as below:
WebProxy webProxy = new WebProxy("<proxy url>");  

Set the HttpWebRequest to use above proxy
request.Proxy = webProxy;

But I retrieved the "HTTP 401 Not Found" error message when try to get the response:
response=((HttpWebResponse)(webRequest.GetResponse()));  

 So I decided to use default system proxy as below:
request.Proxy = WebRequest.GetSystemWebProxy();

Also added following line in web.config file:
 <system.net>
    <defaultProxy useDefaultCredentials="true">
      <proxy usesystemdefault="True" bypassonlocal="True" />
    </defaultProxy> 
 </system.net>

 I can call Web service successfully now. However, the above code and settings not working in SharePoint environment.

So I have to changed settings as below:
 <system.net>
    <defaultProxy useDefaultCredentials="true">
     <proxy usesystemdefault="false" proxyaddress="<proxy url>" bypassonlocal="true" />
    </defaultProxy> 
 </system.net>

 I removed the code "request.Proxy = WebRequest.GetSystemWebProxy();". But I received "Unable connect to server" error again. I verified the proxy URL and found out it points to a script file, and so I updated the proxy URL to only up to the site URL and then try to call Web service again. Working successfully!


Comments

  1. Stephen E.S.22 November 2019 at 05:53

    What URL did you use for your Proxy URL, was this the root site of the or the

    ReplyDelete
    Replies
    1. Linda Liu14 December 2019 at 19:55

      It's the proxy server URL in your IT environment. You can find it in the IE settings->connections.

      Delete

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