Connecting to REST WebService from Navision

I will let the code speak for itself:

Complete CodeUnit:

 OBJECT Codeunit 90002 WebService Connection  
 {  
  OBJECT-PROPERTIES  
  {  
   Date=11-01-12;  
   Time=15:05:21;  
   Modified=Yes;  
   Version List=;  
  }  
  PROPERTIES  
  {  
   OnRun=BEGIN  
       CREATE(XmlIn);  
       CREATE(XmlOut);  
       // Populating XmlIn document for test purposes  
       LoadTestXml();  
       // Invoke method  
       Send();  
       // Save result to disc  
       XmlOut.save('C:\Temp\XML\response.xml');  
      END;  
  }  
  CODE  
  {  
   VAR  
    XmlIn@1000000004 : Automation "{F5078F18-C551-11D3-89B9-0000F81FE221} 6.0:{F6D90F11-9C73-11D3-B32E-00C04F990BB4}:'Microsoft XML, v6.0'.DOMDocument";  
    XmlOut@1000000003 : Automation "{F5078F18-C551-11D3-89B9-0000F81FE221} 6.0:{F6D90F11-9C73-11D3-B32E-00C04F990BB4}:'Microsoft XML, v6.0'.DOMDocument";  
    locautXmlHttp@1160870000 : Automation "{F5078F18-C551-11D3-89B9-0000F81FE221} 6.0:{88D96A0A-F192-11D4-A65F-0040963251E5}:'Microsoft XML, v6.0'.XMLHTTP60";  
   PROCEDURE Send@1000000004();  
   BEGIN  
    // Communication  
    CREATE(locautXmlHttp);  
    locautXmlHttp.open('POST','http://localhost:56063/RESTservice.ashx',0);  
    locautXmlHttp.setRequestHeader('Content-type','text/xml; charset=utf-8');  
    locautXmlHttp.setRequestHeader('KeepAlive','false');  
    locautXmlHttp.setRequestHeader('Timeout','5000');  
    // Send request  
    locautXmlHttp.send(XmlIn);  
    // Get response  
    XmlOut := locautXmlHttp.responseXML;  
    XmlOut.async := TRUE;  
    // Show result  
    MESSAGE(XmlOut.xml);  
   END;  
   PROCEDURE LoadTestXml@1160870000();  
   BEGIN  
    XmlIn.loadXML(  
    '<xmltest>' +  
    '<test>' +  
    'This document can contain anything. But must not contain xml decleration.' +  
    '</test>' +  
    '</xmltest>');  
   END;  
   BEGIN  
   {  
    Shows how to connect to a REST Web Service  
   }  
   END.  
  }  
 }  

.NET REST webservice implemented as a generic handler (.ashx) nothing fancy:

 using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Web;  
 using System.Text;  
 namespace WebServiceApplication  
 {  
   /// <summary>  
   /// Summary description for RESTservice  
   /// </summary>  
   public class RESTservice : IHttpHandler  
   {  
     public void ProcessRequest(HttpContext context)  
     {  
       string requestMethod = context.Request.HttpMethod; // POST, PUT, GET or DELETE  
       System.Xml.XmlDocument doc = new System.Xml.XmlDocument();  
       doc.Load(context.Request.InputStream);  
       System.IO.Stream stream = context.Request.InputStream;  
       byte[] bytes = new byte[stream.Length];  
       stream.Position = 0; // Resetting reading position  
       stream.Read(bytes, 0, (int)stream.Length);  
       string data = Encoding.ASCII.GetString(bytes); // this is your string  
       //context.Response.ContentType = "text/plain";  
       context.Response.ContentType = "text/xml";  
       context.Response.Write("<result>Hello World</result>");  
       context.Response.End();  
     }  
     public bool IsReusable  
     {  
       get  
       {  
         return false;  
       }  
     }  
   }  
 }