further work in progress on the HttpServer side: XmlRpc handler path

almost complete and soon to be ready for testing; OSHttpResponse code
out.

OpenSim/Framework/Servers/OSHttpHandler.cs

@@ -59,10 +59,18 @@ namespace OpenSim.Framework.Servers
     {
         Unprocessed,
         Pass,
-        Handled,
-        Detached,
+        Done,
     }
 
+    /// <summary>
+    /// An OSHttpHandler that matches on the "content-type" header can
+    /// supply an OSHttpContentTypeChecker delegate which will be
+    /// invoked by the request matcher in OSHttpRequestPump.
+    /// </summary>
+    /// <returns>true if the handler is interested in the content;
+    /// false otherwise</returns>
+    public delegate bool OSHttpContentTypeChecker(OSHttpRequest req);
+
     public interface OSHttpHandler
     {
         /// <summary>
@@ -98,6 +106,19 @@ namespace OpenSim.Framework.Servers
             get;
         }
 
+
+        /// <summary>
+        /// An OSHttpHandler that matches on the "content-type" header can
+        /// supply an OSHttpContentTypeChecker delegate which will be
+        /// invoked by the request matcher in OSHttpRequestPump.
+        /// </summary>
+        /// <returns>true if the handler is interested in the content;
+        /// false otherwise</returns>
+        OSHttpContentTypeChecker ContentTypeChecker
+        { 
+            get;
+        }
+
         OSHttpHandlerResult Process(OSHttpRequest request);
     }
 }