Online web services consumed via web API

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Hi,
i have a web api library that consume external web services, after the development using Visual studio, i run it then try to consume the web api function, it works fine.
after i deployed under the IIS an error occurred:

"Message": "An error has occurred.",
"ExceptionMessage": "Unable to connect to the remote server",
"ExceptionType": "System.Net.WebException",
"StackTrace": "  
at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context) 
at System.Net.HttpWebRequest.GetRequestStream()

What I have tried:

i try to debug to catch the error on code level:

C#

WebRequest webRequest = WebRequest.Create("http://XXXXXXXXXXXXXXXXXXXX/webservice/certificate.php");
HttpWebRequest httpRequest = (HttpWebRequest)webRequest;
httpRequest.Method = "POST";
httpRequest.ContentType = "text/xml";
httpRequest.Headers.Add("SOAPAction: http://xxxxxxxxxxxxxxxxxxxxxx/webservice/certificate.php/" + methodName);

            Stream requestStream = httpRequest.GetRequestStream();
            //Create Stream and Complete Request
            StreamWriter streamWriter = new StreamWriter(requestStream);
            string mergedformat = string.Format(GetSoapString(), requestXmlString);
            streamWriter.Write(string.Format(GetSoapString(), requestXmlString));
            streamWriter.Close();

Posted 13-May-19 22:07pm

bashar Haydar

Updated 17-May-19 2:54am

RickZeeland

v2

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TarunShrivastav · Answer 1 · 2019-05-17T02:54:00

There Might be some firewall enabled on your network policy which is stopping this request.
try below solution in your config file

<system.net>
<defaultproxy>
<proxy usesystemdefault="False"
="" proxyaddress="Specify Your Proxy Address: Specify Port Number"
bypassonlocal="False">