Soap call gives 500 (internal server error) in c#

Question

I have one affiliate account and I need to make a soap call to get data. I got ready code from one site and I tried to apply it, but I'm getting 500(internal server error). My code is given below.

public void getdata()
{
    var _url = "http://secure.directtrack.com/api/soap_affiliate.php";
    var _action = "http://secure.directtrack.com/api/soap_affiliate.php/dailyStatsInfo";

    XmlDocument soapEnvelopeXml = CreateSoapEnvelope();
    HttpWebRequest webRequest = CreateWebRequest(_url, _action);
    InsertSoapEnvelopeIntoWebRequest(soapEnvelopeXml, webRequest);

    // begin async call to web request.
    IAsyncResult asyncResult = webRequest.BeginGetResponse(null, null);

    // suspend this thread until call is complete. You might want to
    // do something usefull here like update your UI.
    asyncResult.AsyncWaitHandle.WaitOne();

    // get the response from the completed web request.
    string soapResult;
    using (WebResponse webResponse = webRequest.EndGetResponse(asyncResult))
    using (StreamReader rd = new StreamReader(webResponse.GetResponseStream()))
    {
        soapResult = rd.ReadToEnd();
    }
    Console.Write(soapResult);

}

private static HttpWebRequest CreateWebRequest(string url, string action)
{
    HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
    webRequest.Headers.Add("SOAPAction", action);
    webRequest.ContentType = "text/xml;charset=\"utf-8\"";
    webRequest.Accept = "text/xml";
    webRequest.Method = "POST";
    return webRequest;
}

private static XmlDocument CreateSoapEnvelope()
{
    XmlDocument soapEnvelop = new XmlDocument();

    soapEnvelop.LoadXml(@"<SOAP-ENV:Envelope xmlns:SOAP-ENV=""http://schemas.xmlsoap.org/soap/envelope/"" xmlns:xsi=""http://www.w3.org/1999/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/1999/XMLSchema""><SOAP-ENV:Body  xmlns=""http://soapinterop.org//"" SOAP-ENV:encodingStyle=""http://schemas.xmlsoap.org/soap/encoding/""> <q1:Execute xmlns:q1=""http://secure.directtrack.com/api/soap_affiliate.php/dailyStatsInfo""><client xsi:type=""xsd:string"">MyClientNAme</client><add_code xsi:type=""xsd:string"">MyCode</add_code><password xsi:type=""xsd:string"">MyPassword</password><program_id xsi:type=""xsd:int"">161</program_id></q1:Execute></SOAP-ENV:Body></SOAP-ENV:Envelope>");


    return soapEnvelop;
}

private static void InsertSoapEnvelopeIntoWebRequest(XmlDocument soapEnvelopeXml, HttpWebRequest webRequest)
{
    using (Stream stream = webRequest.GetRequestStream())
    {
        soapEnvelopeXml.Save(stream);
    }
}

What is the problem? Thanks in advance.

Answer 1

An internal server error means that the error is on the server side. Your code may be calling the service exactly correctly, or you may be passing a parameter that the server doesn't know how to process (but the server code isn't smart enough to tell you so).

Without knowing more about the server and what it expects, it isn't possible to diagnose the issue.

That said, it's possible that your soap envelope is the issue. Are you sure you've entered the correct client name, add code, password, program id, etc?