SOAP web request

Question

User580518845 posted

I am using this link to create the soap envelop.
http://www.roelvanlisdonk.nl/?p=1893

But when I reach request.GetResponse(), I get error."The remote server returned an error: (500) Internal Server Error."

I think the error is because of the
webRequest.Headers.Add(@"SOAP:Action"), do I need to add any name space etc to the soap action?

public HttpWebRequest CreateWebRequest()
{
string soapAction =@"SOAP:Action"; // is this correct?

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(@"https://myServiceURL/services");
webRequest.Headers.Add(@"SOAP:Action");
webRequest.ContentType = "text/xml;charset=\"utf-8\"";

//webRequest.ContentType = "text/xml;charset=\"utf-8\";action=\""+ soapAction + "\"";



webRequest.Accept = "text/xml";
webRequest.Method = "POST";
return webRequest;

}

Answer 1

User220959680 posted

Jaypal

using this link to create the soap envelop.
http://www.roelvanlisdonk.nl/?p=1893

Example shown in the above referred article is accessing SOAP based Web Service.

Jaypal

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(@"https://myServiceURL/services")

You are accessing a RESTFul service (which is evident from the URI provided).

Refer Consuming Restful Service section at http://www.codeproject.com/Articles/255684/Create-and-Consume-RESTFul-Service-in-NET-Framewor

EDIT:-

Note that HTTP POST verb is used to create new resource(i.e., new data record in database) in RESTFul service. 

string soapAction =@"SOAP:Action"; // is this correct? 

No. This is not requried. Refer amended source below.

public HttpWebRequest CreateWebRequest()
{

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(@"https://myServiceURL/services");

webRequest.Method = "POST";
WebRequest.ContentType = @"application/xml; charset=utf-8";


return webRequest;
}

Note:- when the service is protected(security), client (above source) needs to provide valid credentials.

It is expected that above method is called in another operation to create a request to the service. then process the response received from the service.

Example

static void Main(string[] args)
{
   //calling the above operation that creates service request 
   CreateWebRequest();

  //POST data to the service using 
  
  //receive the service response || similar to the one below.
  HttpWebResponse resp = req.GetResponse() as HttpWebResponse;
        Console.WriteLine(string.Format("Status Code: {0}, Status Description: {1}", resp.StatusCode, resp.StatusDescription));
        Console.Read();

}

Answer 2

User580518845 posted

Thank you for the reply.

I try adding  these two lines

webRequest.Method = "POST"; 

WebRequest.ContentType = @"application/xml; charset=utf-8";

still I get the same error.

in the code  below, Yes I use the https://     

I added the userid and password in the xml file of this line

soapEnvelopeXml.LoadXml(@"<soap:Envelope xmlns:soap...

and do you see anything wrong in the link http://www.roelvanlisdonk.nl/?p=1893?

The only difference I can see is, they use 

 soapEnvelopeXml.LoadXml(@"<?xml version=""1.0"" encoding=""utf-8""?> <soap:Envelope xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema""> <soap:Body> <HelloWorld3 xmlns=""http://tempuri.org/"">

and my xmlfile does not have this header section below

<?xml version=""1.0"" encoding=""utf-8""?>

webservice gave response back for the request XML I created when I tried with "SOAPUI" program.

So I guess something is wrong with my header file to create the soapenvelope.

Answer 3

User580518845 posted

I just tried adding the  <?xml version=""1.0"" encoding=""utf-8""?>  to the 

soapEnvelopeXml.LoadXml, still I get the same 500 error.

a)

my wsdl have a section like this blow. So I thought I need a the soapaction in the request header with the URI

<soap:operation
soapAction="http://xmldefs.bcd.sa.shs/Common/V1/FindsearchInventory" />
<wsdl:input>
b) Here is the complete code.

Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
'Reference: http://www.roelvanlisdonk.nl/?p=1893

Dim request As HttpWebRequest = CreateWebRequest()
Dim soapEnvelopeXml As New XmlDocument()
'soapEnvelopeXml.LoadXml("<soapenv:Envelope xmlns:soapenv=""http://schemas.xmlsoap.org/soap/envelope/"" ..../soapenv:Envelope>")

soapEnvelopeXml.LoadXml("<?xml version=""1.0"" encoding=""utf-8""?><soapenv:Envelope xmlns:soapenv=""http://schemas.xmlsoap.org/soap/envelope/"" ......<wsse:UsernameToken><wsse:Username>XXXXXX</wsse:Username> <wsse:Password>YYYYYY</wsse:Password>.......</soapenv:Body></soapenv:Envelope>")
'
Using stream As Stream = request.GetRequestStream()
soapEnvelopeXml.Save(stream)
End Using

Using response As WebResponse = request.GetResponse()
Using rd As New StreamReader(response.GetResponseStream())
Dim soapResult As String = rd.ReadToEnd()
Console.WriteLine(soapResult)
End Using
End Using
End Sub

Public Function CreateWebRequest() As HttpWebRequest



Dim soapAction As String = "http://xmldefs.bcd.sa.shs/Common/V1/FindsearchInventory"
Dim webRequest2 As HttpWebRequest = DirectCast(WebRequest.Create("https://Mywebervices"), HttpWebRequest)
' webRequest2.ContentType = "application/soap+xml;charset=UTF-8;action=""" + soapAction + """"

webRequest2.ContentType = "application/xml;charset=UTF-8;"
webRequest2.Method = "POST"

'webRequest2.Headers.Add("Cache-Control: no-Cache")
'webRequest2.Credentials = New NetworkCredential("xxxx", "yyyyy") 'userid and password
Return webRequest2

End Function

Please tell me what is wrong with the code.