We are struggling to get Salesforce to do a Web Service Callout to a Web Service we have written in VB.Net

We have managed to get the StikeIron sample to work in Salesforce as detailed in the example:
http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_callouts_wsdl2apex.htm

We have
1.      Written and tested a WebService in VB.Net.
2.      Saved the WSDL and edited it to make it work
3.      Used 'Generate from WSDL' to create the classes
4.      Built a Visual force page.

And we get this error:

Visualforce Error

Help for this Page

System.CalloutException: IO Exception: Read timed out

Class.alphaIndexCoUk.CNetWebServiceSimpleSoap.HelloWorld: line 30, column 1
Class.alphaIndexCoUkSample.__sfdc_hellow: line 8, column 1

Looking at the Log our web service generates, Salesforce is not connecting to the webservice.

The code used is as follows:

1.      ASMX FILE

Imports System.Web.Services

Imports System.Web.Services.Protocols

Imports System.ComponentModel

 

' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.

' <System.Web.Script.Services.ScriptService()> _

<System.Web.Services.WebService(Namespace:="http://alpha-index.co.uk/")> _

<System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _

<ToolboxItem(False)> _

Public Class CNetWebServiceSimple

    Inherits System.Web.Services.WebService

 

    <WebMethod()> _

    Public Function HelloWorld() As String

        Return "Hello World"

    End Function

 

End Class

 2.      WSDL FILE

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

<wsdl:definitions xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://webservice.alpha-index.co.uk/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" targetNamespace="http://webservice.alpha-index.co.uk/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">

  <wsdl:types>

    <s:schema elementFormDefault="qualified" targetNamespace="http://webservice.alpha-index.co.uk/">

      <s:element name="HelloWorld">

        <s:complexType />

      </s:element>

      <s:element name="HelloWorldResponse">

        <s:complexType>

          <s:sequence>

            <s:element minOccurs="0" maxOccurs="1" name="HelloWorldResult" type="s:string" />

          </s:sequence>

        </s:complexType>

      </s:element>

    </s:schema>

  </wsdl:types>

  <wsdl:message name="HelloWorldSoapIn">

    <wsdl:part name="parameters" element="tns:HelloWorld" />

  </wsdl:message>

  <wsdl:message name="HelloWorldSoapOut">

    <wsdl:part name="parameters" element="tns:HelloWorldResponse" />

  </wsdl:message>

  <wsdl:portType name="CNetWebServiceSimpleSoap">

    <wsdl:operation name="HelloWorld">

      <wsdl:input message="tns:HelloWorldSoapIn" />

      <wsdl:output message="tns:HelloWorldSoapOut" />

    </wsdl:operation>

  </wsdl:portType>

  <wsdl:binding name="CNetWebServiceSimpleSoap" type="tns:CNetWebServiceSimpleSoap">

    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" />

    <wsdl:operation name="HelloWorld">

      <soap:operation soapAction="http://webservice.alpha-index.co.uk/HelloWorld" style="document" />

      <wsdl:input>

        <soap:body use="literal" />

      </wsdl:input>

      <wsdl:output>

        <soap:body use="literal" />

      </wsdl:output>

    </wsdl:operation>

  </wsdl:binding>

  <wsdl:binding name="CNetWebServiceSimpleSoap12" type="tns:CNetWebServiceSimpleSoap">

    <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" />

    <wsdl:operation name="HelloWorld">

      <soap12:operation soapAction="http://webservice.alpha-index.co.uk/HelloWorld" style="document" />

      <wsdl:input>

        <soap12:body use="literal" />

      </wsdl:input>

      <wsdl:output>

        <soap12:body use="literal" />

      </wsdl:output>

    </wsdl:operation>

  </wsdl:binding>

  <wsdl:service name="CNetWebServiceSimple">

    <wsdl:port name="CNetWebServiceSimpleSoap" binding="tns:CNetWebServiceSimpleSoap">

      <soap:address location="http://webservices.alpha-index.co.uk/CNetWebService/CNetWebServiceSimple.asmx" />

    </wsdl:port>

    <wsdl:port name="CNetWebServiceSimpleSoap12" binding="tns:CNetWebServiceSimpleSoap12">

      <soap12:address location="http://webservices.alpha-index.co.uk/CNetWebService/CNetWebServiceSimple.asmx" />

    </wsdl:port>

  </wsdl:service>

</wsdl:definitions>

BUT WE REMOVE SOME CODE LINES, BECAUSE  WE GET THE FOLLOWING ERROR:

 Error: Failed to parse wsdl: Found more than one wsdl:binding. WSDL with multiple binding not supported

THIS IS THE E=WSDL EDITED SO 'GENERATE FROM WSDL' WORKED:

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

<wsdl:definitions xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://alpha-index.co.uk/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" targetNamespace="http://alpha-index.co.uk/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">

 

  <wsdl:types>

    <s:schema elementFormDefault="qualified" targetNamespace="http://alpha-index.co.uk/">

      <s:element name="HelloWorld">

        <s:complexType />

      </s:element>

      <s:element name="HelloWorldResponse">

        <s:complexType>

          <s:sequence>

            <s:element minOccurs="0" maxOccurs="1" name="HelloWorldResult" type="s:string" />

          </s:sequence>

        </s:complexType>

      </s:element>

    </s:schema>

  </wsdl:types>

  <wsdl:message name="HelloWorldSoapIn">

    <wsdl:part name="parameters" element="tns:HelloWorld" />

  </wsdl:message>

  <wsdl:message name="HelloWorldSoapOut">

    <wsdl:part name="parameters" element="tns:HelloWorldResponse" />

  </wsdl:message>

  <wsdl:portType name="CNetWebServiceSimpleSoap">

    <wsdl:operation name="HelloWorld">

      <wsdl:input message="tns:HelloWorldSoapIn" />

      <wsdl:output message="tns:HelloWorldSoapOut" />

    </wsdl:operation>

  </wsdl:portType>

  <wsdl:binding name="CNetWebServiceSimpleSoap" type="tns:CNetWebServiceSimpleSoap">

    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" />

    <wsdl:operation name="HelloWorld">

      <soap:operation soapAction="http://alpha-index.co.uk/HelloWorld" style="document" />

      <wsdl:input>

        <soap:body use="literal" />

      </wsdl:input>

      <wsdl:output>

        <soap:body use="literal" />

      </wsdl:output>

    </wsdl:operation>

  </wsdl:binding>

  <wsdl:service name="CNetWebServiceSimple">

    <wsdl:port name="CNetWebServiceSimpleSoap" binding="tns:CNetWebServiceSimpleSoap">

      <soap:address location="http://webservices.alpha-index.co.uk/CNetWebService/CNetWebServiceSimple.asmx" />

    </wsdl:port>

  </wsdl:service>

</wsdl:definitions>

 3.      Generated Apex Class

//Generated by wsdl2apex

 

public class alphaIndexCoUk {

    public class HelloWorld_element {

        private String[] apex_schema_type_info = new String[]{'http://alpha-index.co.uk/','true','false'};

        private String[] field_order_type_info = new String[]{};

    }

    public class HelloWorldResponse_element {

        public String HelloWorldResult;

        private String[] HelloWorldResult_type_info = new String[]{'HelloWorldResult','http://www.w3.org/2001/XMLSchema','string','0','1','false'};

        private String[] apex_schema_type_info = new String[]{'http://alpha-index.co.uk/','true','false'};

        private String[] field_order_type_info = new String[]{'HelloWorldResult'};

    }

    public class CNetWebServiceSimpleSoap {

        public String endpoint_x = 'http://webservices.alpha-index.co.uk/CNetWebService/CNetWebServiceSimple.asmx';

        public Map<String,String> inputHttpHeaders_x;

        public Map<String,String> outputHttpHeaders_x;

        public String clientCertName_x;

        public String clientCert_x;

        public String clientCertPasswd_x;

        public Integer timeout_x;

        private String[] ns_map_type_info = new String[]{'http://alpha-index.co.uk/', 'alphaIndexCoUk'};

        public String HelloWorld() {

            alphaIndexCoUk.HelloWorld_element request_x = new alphaIndexCoUk.HelloWorld_element();

            alphaIndexCoUk.HelloWorldResponse_element response_x;

            Map<String, alphaIndexCoUk.HelloWorldResponse_element> response_map_x = new Map<String, alphaIndexCoUk.HelloWorldResponse_element>();

            response_map_x.put('response_x', response_x);

           

            WebServiceCallout.invoke(

              this,

              request_x,

              response_map_x,

              new String[]{endpoint_x,

              'http://alpha-index.co.uk/HelloWorld',

              'http://alpha-index.co.uk/',

              'HelloWorld',

              'http://alpha-index.co.uk/',

              'HelloWorldResponse',

              'alphaIndexCoUk.HelloWorldResponse_element'}

            );

           

            response_x = response_map_x.get('response_x');

            return response_x.HelloWorldResult;

        }

    }

}

 4.      Custom Apex class

public class alphaIndexCoUkSample {

 

    public string hellow{

        get{

 

            alphaIndexCoUk.CNetWebServiceSimpleSoap dns = new alphaIndexCoUk.CNetWebServiceSimpleSoap ();

 

            return dns.HelloWorld();

 

        }

        set;

    }

}

 5.      Visual force page to show HelloWorld

<apex:page controller="alphaIndexCoUkSample">

<apex:form ><apex:inputText value="{!hellow}"/></apex:form>

  <!-- Begin Default Content REMOVE THIS -->

  <h1>Congratulations</h1>

  This is your new Page

  <!-- End Default Content REMOVE THIS -->

</apex:page>

The Web Service can be found at: http://webservices.alpha-index.co.uk/CNetWebService/CNetWebServiceSimple.asm
x
(add ?WSDL to see the WSDL)

And we've published a sample .Net page to show the web service working
http://dirdb.alpha-index.co.uk/WebServiceTest/TestWebService.aspx

All the web service does is return 'Hello World' and record the call to a log file.
Clicking on [Test Hello World] runs the Web Service
And clicking on [View Hello World Log] displays the last log entry (we used this to see if Salesforce was reaching our web service)

I hope that anyone can help me with this problem.

Thanks in advance

Pablo