3 files changed, 211 insertions, 8 deletions

diff --git a/OpenSim/Capabilities/Handlers/GetMesh/GetMeshHandler.cs b/OpenSim/Capabilities/Handlers/GetMesh/GetMeshHandler.cs
index 720640e..ec574a3 100644
--- a/OpenSim/Capabilities/Handlers/GetMesh/GetMeshHandler.cs
+++ b/OpenSim/Capabilities/Handlers/GetMesh/GetMeshHandler.cs
@@ -45,16 +45,54 @@ namespace OpenSim.Capabilities.Handlers
 {
     public class GetMeshHandler 
     {
-//        private static readonly ILog m_log =
-//            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private static readonly ILog m_log =
+                   LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
         
         private IAssetService m_assetService;
 
+        public const string DefaultFormat = "vnd.ll.mesh";
+        
         public GetMeshHandler(IAssetService assService)
         {
             m_assetService = assService;
         }
+        public Hashtable Handle(Hashtable request)
+        {
+            Hashtable ret = new Hashtable();
+            ret["int_response_code"] = (int)System.Net.HttpStatusCode.NotFound;
+            ret["content_type"] = "text/plain";
+            ret["keepalive"] = false;
+            ret["reusecontext"] = false;
+            ret["int_bytes"] = 0;
+            ret["int_lod"] = 0;
+            string MeshStr = (string)request["mesh_id"];
+            
+
+            //m_log.DebugFormat("[GETMESH]: called {0}", MeshStr);
+
+            if (m_assetService == null)
+            {
+                m_log.Error("[GETMESH]: Cannot fetch mesh " + MeshStr + " without an asset service");
+            }
+
+            UUID meshID;
+            if (!String.IsNullOrEmpty(MeshStr) && UUID.TryParse(MeshStr, out meshID))
+            {
+                //                m_log.DebugFormat("[GETMESH]: Received request for mesh id {0}", meshID);
 
+               
+                ret = ProcessGetMesh(request, UUID.Zero, null);
+                       
+                
+            }
+            else
+            {
+                m_log.Warn("[GETMESH]: Failed to parse a mesh_id from GetMesh request: " + (string)request["uri"]);
+            }
+
+            
+            return ret;
+        }
         public Hashtable ProcessGetMesh(Hashtable request, UUID AgentId, Caps cap)
         {
             Hashtable responsedata = new Hashtable();
@@ -62,6 +100,9 @@ namespace OpenSim.Capabilities.Handlers
             responsedata["content_type"] = "text/plain";
             responsedata["keepalive"] = false;
             responsedata["str_response_string"] = "Request wasn't what was expected";
+            responsedata["reusecontext"] = false;
+            responsedata["int_lod"] = 0;
+            responsedata["int_bytes"] = 0;
 
             string meshStr = string.Empty;
 
@@ -77,6 +118,7 @@ namespace OpenSim.Capabilities.Handlers
                     responsedata["content_type"] = "text/plain";
                     responsedata["keepalive"] = false;
                     responsedata["str_response_string"] = "The asset service is unavailable.  So is your mesh.";
+                    responsedata["reusecontext"] = false;
                     return responsedata;
                 }
 
@@ -86,9 +128,100 @@ namespace OpenSim.Capabilities.Handlers
                 {
                     if (mesh.Type == (SByte)AssetType.Mesh)
                     {
-                        responsedata["str_response_string"] = Convert.ToBase64String(mesh.Data);
-                        responsedata["content_type"] = "application/vnd.ll.mesh";
-                        responsedata["int_response_code"] = 200;
+
+                        Hashtable headers = new Hashtable();
+                        responsedata["headers"] = headers;
+
+                        string range = String.Empty;
+
+                        if (((Hashtable)request["headers"])["range"] != null)
+                            range = (string)((Hashtable)request["headers"])["range"];
+
+                        else if (((Hashtable)request["headers"])["Range"] != null)
+                            range = (string)((Hashtable)request["headers"])["Range"];
+
+                        if (!String.IsNullOrEmpty(range)) // Mesh Asset LOD // Physics
+                        {
+                             // Range request
+                            int start, end;
+                            if (TryParseRange(range, out start, out end))
+                            {
+                                 // Before clamping start make sure we can satisfy it in order to avoid
+                    // sending back the last byte instead of an error status
+                                if (start >= mesh.Data.Length)
+                                {
+                                    responsedata["int_response_code"] = 404; //501; //410; //404;
+                                    responsedata["content_type"] = "text/plain";
+                                    responsedata["keepalive"] = false;
+                                    responsedata["str_response_string"] = "This range doesnt exist.";
+                                    responsedata["reusecontext"] = false;
+                                    responsedata["int_lod"] = 3;
+                                    return responsedata;
+                                }
+                                else
+                                {
+                                    end = Utils.Clamp(end, 0, mesh.Data.Length - 1);
+                                    start = Utils.Clamp(start, 0, end);
+                                    int len = end - start + 1;
+
+                                    //m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
+
+                                    if (start > 20000)
+                                    {
+                                        responsedata["int_lod"] = 3;
+                                    }
+                                    else if (start < 4097)
+                                    {
+                                        responsedata["int_lod"] = 1;
+                                    }
+                                    else
+                                    {
+                                        responsedata["int_lod"] = 2;
+                                    }
+
+                                    
+                                    if (start == 0 && len == mesh.Data.Length) // well redudante maybe
+                                    {
+                                        responsedata["int_response_code"] = (int) System.Net.HttpStatusCode.OK;
+                                        responsedata["bin_response_data"] = mesh.Data;
+                                        responsedata["int_bytes"] = mesh.Data.Length;
+                                        responsedata["reusecontext"] = false;
+                                        responsedata["int_lod"] = 3;
+                                        
+                                    }
+                                    else
+                                    {
+                                        responsedata["int_response_code"] =
+                                            (int) System.Net.HttpStatusCode.PartialContent;
+                                        headers["Content-Range"] = String.Format("bytes {0}-{1}/{2}", start, end,
+                                                                                 mesh.Data.Length);
+
+                                        byte[] d = new byte[len];
+                                        Array.Copy(mesh.Data, start, d, 0, len);
+                                        responsedata["bin_response_data"] = d;
+                                        responsedata["int_bytes"] = len;
+                                        responsedata["reusecontext"] = false;
+                                    }
+                                }
+                            }
+                            else
+                            {
+                                m_log.Warn("[GETMESH]: Failed to parse a range from GetMesh request, sending full asset: " + (string)request["uri"]);
+                                responsedata["str_response_string"] = Convert.ToBase64String(mesh.Data);
+                                responsedata["content_type"] = "application/vnd.ll.mesh";
+                                responsedata["int_response_code"] = 200;
+                                responsedata["reusecontext"] = false;
+                                responsedata["int_lod"] = 3;
+                            }
+                        }
+                        else
+                        {
+                            responsedata["str_response_string"] = Convert.ToBase64String(mesh.Data);
+                            responsedata["content_type"] = "application/vnd.ll.mesh";
+                            responsedata["int_response_code"] = 200;
+                            responsedata["reusecontext"] = false;
+                            responsedata["int_lod"] = 3;
+                        }
                     }
                     // Optionally add additional mesh types here
                     else
@@ -97,6 +230,8 @@ namespace OpenSim.Capabilities.Handlers
                         responsedata["content_type"] = "text/plain";
                         responsedata["keepalive"] = false;
                         responsedata["str_response_string"] = "Unfortunately, this asset isn't a mesh.";
+                        responsedata["reusecontext"] = false;
+                        responsedata["int_lod"] = 1;
                         return responsedata;
                     }
                 }
@@ -106,11 +241,28 @@ namespace OpenSim.Capabilities.Handlers
                     responsedata["content_type"] = "text/plain";
                     responsedata["keepalive"] = false;
                     responsedata["str_response_string"] = "Your Mesh wasn't found.  Sorry!";
+                    responsedata["reusecontext"] = false;
+                    responsedata["int_lod"] = 0;
                     return responsedata;
                 }
             }
 
             return responsedata;
         }
+        private bool TryParseRange(string header, out int start, out int end)
+        {
+            if (header.StartsWith("bytes="))
+            {
+                string[] rangeValues = header.Substring(6).Split('-');
+                if (rangeValues.Length == 2)
+                {
+                    if (Int32.TryParse(rangeValues[0], out start) && Int32.TryParse(rangeValues[1], out end))
+                        return true;
+                }
+            }
+
+            start = end = 0;
+            return false;
+        }
     }
 }
\ No newline at end of file
diff --git a/OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs b/OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs
index b3a4d61..6437d0b 100644
--- a/OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs
+++ b/OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs
@@ -68,7 +68,7 @@ namespace OpenSim.Capabilities.Handlers
             ret["content_type"] = "text/plain";
             ret["keepalive"] = false;
             ret["reusecontext"] = false;
-
+            ret["int_bytes"] = 0;
             string textureStr = (string)request["texture_id"];
             string format = (string)request["format"];
 
@@ -200,11 +200,25 @@ namespace OpenSim.Capabilities.Handlers
                 int start, end;
                 if (TryParseRange(range, out start, out end))
                 {
-
                     // Before clamping start make sure we can satisfy it in order to avoid
                     // sending back the last byte instead of an error status
                     if (start >= texture.Data.Length)
                     {
+//                        m_log.DebugFormat(
+//                            "[GETTEXTURE]: Client requested range for texture {0} starting at {1} but texture has end of {2}",
+//                            texture.ID, start, texture.Data.Length);
+
+                        // Stricly speaking, as per http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html, we should be sending back
+                        // Requested Range Not Satisfiable (416) here.  However, it appears that at least recent implementations
+                        // of the Linden Lab viewer (3.2.1 and 3.3.4 and probably earlier), a viewer that has previously
+                        // received a very small texture  may attempt to fetch bytes from the server past the
+                        // range of data that it received originally.  Whether this happens appears to depend on whether
+                        // the viewer's estimation of how large a request it needs to make for certain discard levels
+                        // (http://wiki.secondlife.com/wiki/Image_System#Discard_Level_and_Mip_Mapping), chiefly discard
+                        // level 2.  If this estimate is greater than the total texture size, returning a RequestedRangeNotSatisfiable
+                        // here will cause the viewer to treat the texture as bad and never display the full resolution
+                        // However, if we return PartialContent (or OK) instead, the viewer will display that resolution.
+
 //                        response.StatusCode = (int)System.Net.HttpStatusCode.RequestedRangeNotSatisfiable;
                         // viewers don't seem to handle RequestedRangeNotSatisfiable and keep retrying with same parameters
                         response["int_response_code"] = (int)System.Net.HttpStatusCode.NotFound;
@@ -215,7 +229,7 @@ namespace OpenSim.Capabilities.Handlers
                         start = Utils.Clamp(start, 0, end);
                         int len = end - start + 1;
 
-                        //m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
+//                        m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
 
                         response["content-type"] = texture.Metadata.ContentType;
 
@@ -223,6 +237,7 @@ namespace OpenSim.Capabilities.Handlers
                         {
                             response["int_response_code"] = (int)System.Net.HttpStatusCode.OK;
                             response["bin_response_data"] = texture.Data;
+                            response["int_bytes"] = texture.Data.Length;
                         }
                         else
                         {
@@ -232,6 +247,7 @@ namespace OpenSim.Capabilities.Handlers
                             byte[] d = new byte[len];
                             Array.Copy(texture.Data, start, d, 0, len);
                             response["bin_response_data"] = d;
+                            response["int_bytes"] = len;
                         }
 //                        response.Body.Write(texture.Data, start, len);
                     }
@@ -252,6 +268,8 @@ namespace OpenSim.Capabilities.Handlers
                     response["content_type"] = "image/" + format;
                 
                 response["bin_response_data"] = texture.Data;
+                response["int_bytes"] = texture.Data.Length;
+
 //                response.Body.Write(texture.Data, 0, texture.Data.Length);
             }
 
diff --git a/OpenSim/Capabilities/Handlers/Properties/AssemblyInfo.cs b/OpenSim/Capabilities/Handlers/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..a681fb6
--- /dev/null
+++ b/OpenSim/Capabilities/Handlers/Properties/AssemblyInfo.cs
@@ -0,0 +1,33 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("OpenSim.Capabilities.Handlers")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("http://opensimulator.org")]
+[assembly: AssemblyProduct("OpenSim")]
+[assembly: AssemblyCopyright("OpenSimulator developers")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("32350823-e1df-45e3-b7fa-0a58b4372433")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+[assembly: AssemblyVersion("0.7.5.*")]
+[assembly: AssemblyFileVersion("1.0.0.0")]