Some refactoring , mainly on Inventory code.

OpenSim/Framework/Servers/SynchronousRestObjectPoster.cs

@@ -0,0 +1,48 @@
+using System;
+using System.IO;
+using System.Net;
+using System.Text;
+using System.Xml;
+using System.Xml.Serialization;
+
+namespace OpenSim.Framework.Servers
+{
+    public class SynchronousRestObjectPoster
+    {
+        public static TResponse BeginPostObject<TRequest, TResponse>(string requestUrl, TRequest obj)
+        {
+            Type type = typeof(TRequest);
+
+            WebRequest request = WebRequest.Create(requestUrl);
+            request.Method = "POST";
+            request.ContentType = "text/xml";
+
+            MemoryStream buffer = new MemoryStream();
+
+            XmlWriterSettings settings = new XmlWriterSettings();
+            settings.Encoding = Encoding.UTF8;
+
+            using (XmlWriter writer = XmlWriter.Create(buffer, settings))
+            {
+                XmlSerializer serializer = new XmlSerializer(type);
+                serializer.Serialize(writer, obj);
+                writer.Flush();
+            }
+
+            int length = (int)buffer.Length;
+            request.ContentLength = length;
+
+            Stream requestStream = request.GetRequestStream();
+            requestStream.Write(buffer.ToArray(), 0, length);
+            TResponse deserial = default(TResponse);
+            using (WebResponse resp = request.GetResponse())
+            {
+
+                XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
+                deserial = (TResponse)deserializer.Deserialize(resp.GetResponseStream());
+            }
+            return deserial;
+        }
+
+    }
+}