* Added a Basic DOS protection container/base object for the most common HTTP Server handlers. XMLRPC Handler, GenericHttpHandler and <Various>StreamHandler

* Applied the XmlRpcBasicDOSProtector.cs to the login service as both an example, and good practice.
* Applied the BaseStreamHandlerBasicDOSProtector.cs to the friends service as an example of the DOS Protector on StreamHandlers
* Added CircularBuffer, used for CPU and Memory friendly rate monitoring.
* DosProtector has 2 states, 1. Just Check for blocked users and check general velocity, 2. Track velocity per user,     It only jumps to 2 if it's getting a lot of requests, and state 1 is about as resource friendly as if it wasn't even there.

1 files changed, 10 insertions, 2 deletions

diff --git a/OpenSim/Server/Handlers/Asset/AssetServerGetHandler.cs b/OpenSim/Server/Handlers/Asset/AssetServerGetHandler.cs
index 8b23a83..0bd0235 100644
--- a/OpenSim/Server/Handlers/Asset/AssetServerGetHandler.cs
+++ b/OpenSim/Server/Handlers/Asset/AssetServerGetHandler.cs
@@ -42,14 +42,22 @@ using OpenSim.Framework.Servers.HttpServer;
 
 namespace OpenSim.Server.Handlers.Asset
 {
-    public class AssetServerGetHandler : BaseStreamHandler
+    public class AssetServerGetHandler : BaseStreamHandlerBasicDOSProtector
     {
         // private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         private IAssetService m_AssetService;
 
         public AssetServerGetHandler(IAssetService service) :
-                base("GET", "/assets")
+                base("GET", "/assets",new BasicDosProtectorOptions()
+                                          {
+                                              AllowXForwardedFor = true,
+                                              ForgetTimeSpan = TimeSpan.FromSeconds(2),
+                                              MaxRequestsInTimeframe = 5,
+                                              ReportingName = "ASSETGETDOSPROTECTOR",
+                                              RequestTimeSpan = TimeSpan.FromSeconds(5),
+                                              ThrottledAction = ThrottleAction.DoThrottledMethod
+                                          })
         {
             m_AssetService = service;
         }