C# OSHttpResponse.AddHeader方法代碼示例

 private byte[] OKResponse (OSHttpResponse httpResponse)
 {
     httpResponse.AddHeader ("X-Handlers-Provided", m_HandlersType);
     httpResponse.StatusCode = (int)HttpStatusCode.OK;
     httpResponse.StatusDescription = "OK";
     return new byte[0];
 }

        byte[] OptionsHandler(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
        {
            httpResponse.AddHeader("DAV", "2");
            httpResponse.AddHeader("MS-Author-Via", "DAV");

            //This now gets all the events that have handler from the dav listener
            string allowString = server.GetAvailableMethods();

            //Add this information to both, Public and Allow. We currently have no way of separating these two
            httpResponse.AddHeader("Public", allowString);
            httpResponse.AddHeader("Allow", allowString);

            //Preserving the old headers as reference. These should be removed when method is mature enough
            //response.AddHeader("Public", "COPY, DELETE, GET, HEAD, MKCOL, MOVE, OPTIONS, PROPFIND, PROPPATCH, PUT");
            //response.AddHeader("Allow", "COPY, DELETE, GET, HEAD, MKCOL, MOVE, OPTIONS, PROPFIND, PROPPATCH, PUT");

            return OpenMetaverse.Utils.EmptyBytes;
        }

        byte[] PropFindHandler(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
        {
            string username;
            if (server.AuthenticateRequest(httpRequest, httpResponse, out username))
            {
                //PropertyRequestType requestType = PropertyRequestType.AllProperties;
                List<string> davProperties = new List<string>();
                List<string> validProperties = new List<string>();
                List<string> invalidProperties = new List<string>();

                if (httpRequest.ContentLength != 0)
                {
                    XPathNavigator requestNavigator = new XPathDocument(httpRequest.InputStream).CreateNavigator();
                    XPathNodeIterator propNodeIterator = requestNavigator.SelectDescendants("prop", "DAV:", false);
                    if (propNodeIterator.MoveNext())
                    {
                        XPathNodeIterator nodeChildren = propNodeIterator.Current.SelectChildren(XPathNodeType.All);
                        while (nodeChildren.MoveNext())
                        {
                            XPathNavigator currentNode = nodeChildren.Current;

                            if (currentNode.NodeType == XPathNodeType.Element)
                                davProperties.Add(currentNode.LocalName.ToLower());
                        }
                    }
                }

                using (MemoryStream responseStream = new MemoryStream())
                {
                    using (XmlTextWriter xmlWriter = new XmlTextWriter(responseStream, Encoding.ASCII))
                    {
                        xmlWriter.Formatting = Formatting.Indented;
                        xmlWriter.IndentChar = '\t';
                        xmlWriter.Indentation = 1;
                        xmlWriter.WriteStartDocument();

                        xmlWriter.WriteStartElement("D", "multistatus", "DAV:");
                        // Microsoft cruft (joy)
                        xmlWriter.WriteAttributeString("xmlns:b", "urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882");
                        xmlWriter.WriteAttributeString("xmlns:c", "urn:schemas-microsoft-com:office:office");

                        DepthHeader depth = Depth.ParseDepth(httpRequest);

                        IList<IWebDAVResource> resources = server.OnPropFindConnector(username, httpRequest.Url.AbsolutePath, depth);
                        if (resources.Count > 0)
                        {
                            for (int i = 0; i < resources.Count; i++)
                                XmlResponse.WriteResponse(xmlWriter, davProperties, resources[i]);
                        }

                        xmlWriter.WriteEndElement(); // multistatus

                        xmlWriter.WriteEndDocument();
                        xmlWriter.Flush();

                        httpResponse.KeepAlive = httpRequest.KeepAlive;
                        httpResponse.ContentType = "text/xml";
                        httpResponse.ContentEncoding = Encoding.UTF8;
                        httpResponse.AddHeader("DAV", "1");
                        httpResponse.AddHeader("MS-Author-Via", "DAV");
                        httpResponse.AddHeader("Cache-Control", "no-cache");
                        if (resources.Count > 0)
                        {
                            httpResponse.StatusCode = 207; // Multistatus

                            byte[] bytes = responseStream.ToArray();
                            httpResponse.ContentLength = bytes.Length;
                            return bytes;
                        }
                        else
                        {
                            //eventually this should be the same that is defined in HttpListener.Set404Handler()
                            //that however needs some work in HttpServer
                            httpResponse.StatusCode = (int)HttpStatusCode.NotFound;
                            httpResponse.StatusDescription = "Not Found";
                            string notFoundResponse = "<html><head><title>Page Not Found</title></head><body><h3>" + httpResponse.StatusDescription + "</h3></body></html>";
                            byte[] buffer = System.Text.Encoding.UTF8.GetBytes(notFoundResponse);
                            httpResponse.ContentLength = buffer.Length;
                            return buffer;
                        }
                    }
                }
            }

            return OpenMetaverse.Utils.EmptyBytes;
        }

        private void WriteTextureData(OSHttpRequest request, OSHttpResponse response, AssetBase texture, string format)
        {
            string range = request.Headers.GetOne("Range");
            //m_log.DebugFormat("[GETTEXTURE]: Range {0}", range);
            if (!String.IsNullOrEmpty(range)) // JP2's only
            {
                // 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 >= texture.Data.Length)
                    {
                        response.StatusCode = (int)System.Net.HttpStatusCode.RequestedRangeNotSatisfiable;
                        return;
                    }

                    end = Utils.Clamp(end, 0, texture.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 (len < texture.Data.Length)
                        response.StatusCode = (int)System.Net.HttpStatusCode.PartialContent;

                    response.ContentLength = len;
                    response.ContentType = texture.Metadata.ContentType;
                    response.AddHeader("Content-Range", String.Format("bytes {0}-{1}/{2}", start, end, texture.Data.Length));

                    response.Body.Write(texture.Data, start, len);
                }
                else
                {
                    m_log.Warn("[GETTEXTURE]: Malformed Range header: " + range);
                    response.StatusCode = (int)System.Net.HttpStatusCode.BadRequest;
                }
            }
            else // JP2's or other formats
            {
                // Full content request
                response.StatusCode = (int)System.Net.HttpStatusCode.OK;
                response.ContentLength = texture.Data.Length;
                if (format == DefaultFormat)
                    response.ContentType = texture.Metadata.ContentType;
                else
                    response.ContentType = "image/" + format;
                response.Body.Write(texture.Data, 0, texture.Data.Length);
            }
        }

            public byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
            {
                byte[] assetData = null;
                UUID assetID;
                // Split the URL up into an AssetID and a method
                string[] rawUrl = httpRequest.Url.PathAndQuery.Split('/');

                if (rawUrl.Length >= 3 && UUID.TryParse(rawUrl[1], out assetID))
                {
                    UUID authToken = Utils.GetAuthToken(httpRequest);

                    if (m_server.AuthorizationProvider.IsDataAuthorized(authToken, assetID))
                    {
                        BackendResponse storageResponse = m_server.StorageProvider.TryFetchData(assetID, out assetData);

                        if (storageResponse == BackendResponse.Success)
                        {
                            httpResponse.StatusCode = (int) HttpStatusCode.OK;
                            httpResponse.ContentType = "application/octet-stream";
                            httpResponse.AddHeader("Content-Disposition", "attachment; filename=" + assetID.ToString());
                            httpResponse.ContentLength = assetData.Length;
                            httpResponse.Body.Write(assetData, 0, assetData.Length);
                        }
                        else if (storageResponse == BackendResponse.NotFound)
                        {
                            httpResponse.StatusCode = (int) HttpStatusCode.NotFound;
                        }
                        else
                        {
                            httpResponse.StatusCode = (int) HttpStatusCode.InternalServerError;
                        }
                    }
                    else
                    {
                        httpResponse.StatusCode = (int) HttpStatusCode.Forbidden;
                    }

                    return assetData;
                }

                httpResponse.StatusCode = (int) HttpStatusCode.BadRequest;
                return assetData;
            }

        internal void DoHTTPGruntWork(Hashtable responsedata, OSHttpResponse response)
        {
            //m_log.Info("[BASE HTTP SERVER]: Doing HTTP Grunt work with response");
            int responsecode = (int)responsedata["int_response_code"];
            string responseString = (string)responsedata["str_response_string"];
            string contentType = (string)responsedata["content_type"];


            if (responsedata.ContainsKey("error_status_text"))
            {
                response.StatusDescription = (string)responsedata["error_status_text"];
            }
            if (responsedata.ContainsKey("http_protocol_version"))
            {
                response.ProtocolVersion = (string)responsedata["http_protocol_version"];
            }

            if (responsedata.ContainsKey("keepalive"))
            {
                bool keepalive = (bool)responsedata["keepalive"];
                response.KeepAlive = keepalive;

            }

            if (responsedata.ContainsKey("reusecontext"))
                response.ReuseContext = (bool) responsedata["reusecontext"];

            // Cross-Origin Resource Sharing with simple requests
            if (responsedata.ContainsKey("access_control_allow_origin"))
                response.AddHeader("Access-Control-Allow-Origin", (string)responsedata["access_control_allow_origin"]);

            //Even though only one other part of the entire code uses HTTPHandlers, we shouldn't expect this
            //and should check for NullReferenceExceptions

            if (string.IsNullOrEmpty(contentType))
            {
                contentType = "text/html";
            }

            // The client ignores anything but 200 here for web login, so ensure that this is 200 for that

            response.StatusCode = responsecode;

            if (responsecode == (int)OSHttpStatusCode.RedirectMovedPermanently)
            {
                response.RedirectLocation = (string)responsedata["str_redirect_location"];
                response.StatusCode = responsecode;
            }

            response.AddHeader("Content-Type", contentType);

            byte[] buffer;

            if (!(contentType.Contains("image")
                || contentType.Contains("x-shockwave-flash")
                || contentType.Contains("application/x-oar")
                || contentType.Contains("application/vnd.ll.mesh")))
            {
                // Text
                buffer = Encoding.UTF8.GetBytes(responseString);
            }
            else
            {
                // Binary!
                buffer = Convert.FromBase64String(responseString);
            }

            response.SendChunked = false;
            response.ContentLength64 = buffer.Length;
            response.ContentEncoding = Encoding.UTF8;

            try
            {
                response.OutputStream.Write(buffer, 0, buffer.Length);
            }
            catch (Exception ex)
            {
                m_log.Warn("[HTTPD]: Error - " + ex.Message);
            }
            finally
            {
                //response.OutputStream.Close();
                try
                {
                    response.OutputStream.Flush();
                    response.Send();

                    //if (!response.KeepAlive && response.ReuseContext)
                    //    response.FreeContext();
                }
                catch (SocketException e)
                {
                    // This has to be here to prevent a Linux/Mono crash
                    m_log.WarnFormat("[BASE HTTP SERVER]: XmlRpcRequest issue {0}.\nNOTE: this may be spurious on Linux.", e);
                }
                catch (IOException e)
                {
                    m_log.Warn("[BASE HTTP SERVER]: XmlRpcRequest issue: " + e.Message);
                }
            }
//.........這裏部分代碼省略.........

        public byte[] SendHTML500(OSHttpResponse response)
        {
            // I know this statuscode is dumb, but the client doesn't respond to 404s and 500s
            response.StatusCode = (int)OSHttpStatusCode.SuccessOk;
            response.AddHeader("Content-type", "text/html");

            string responseString = GetHTTP500();
            byte[] buffer = Encoding.UTF8.GetBytes(responseString);

            response.SendChunked = false;
            response.ContentLength64 = buffer.Length;
            response.ContentEncoding = Encoding.UTF8;
            
                
            return buffer;
        }

        public void SendResponse(OSHttpRequest request, OSHttpResponse response, IRequestHandler requestHandler, byte[] buffer)
        {
            try
            {
                request.InputStream.Close();

                // Do not include the time taken to actually send the response to the caller in the measurement
                // time.  This is to avoid logging when it's the client that is slow to process rather than the
                // server
                request.EndTime = Environment.TickCount;
                // Every month or so this will wrap and give bad numbers, not really a problem
                // since its just for reporting
                int tickdiff = request.EndTime - request.StartTime;

                // Dont log EQG messages.  They always run long due to the way the queue works
                if ((tickdiff > 3000) && (request.Url.AbsolutePath.StartsWith("/CAPS/EQG") == false))
                {
                    m_log.InfoFormat(
                        "[BASE HTTP SERVER]: Slow handling of {0} {1} {2} {3} {4} from {5} took {6}ms",
                        request.SeqNo,
                        request.HttpMethod,
                        request.Url.AbsolutePath,
                        requestHandler != null ? requestHandler.Name : "",
                        requestHandler != null ? requestHandler.Description : "",
                        request.RemoteIPEndPoint,
                        tickdiff);
                }
                else if (DebugLevel >= 4)
                {
                    m_log.DebugFormat(
                        "[BASE HTTP SERVER]: HTTP IN {0} :{1} took {2}ms",
                        request.SeqNo,
                        Port,
                        tickdiff);
                }

                if (buffer != null)
                {          
                    //find the accept encoding key
                    string acceptEncodingKey = null;
                    foreach (string key in request.Headers.AllKeys)
                    {
                        if (key.ToLower() == "accept-encoding")
                        {
                            acceptEncodingKey = request.Headers[key];
                        }
                    }

                    // GZip compress the response if the client says they can handle that
                    if (acceptEncodingKey != null &&
                        request.Headers["accept-encoding"].Contains("gzip"))
                    {
                        using (MemoryStream ms = new MemoryStream())
                        {
                            using (GZipStream gs = new GZipStream(ms, CompressionMode.Compress))
                            {
                                gs.Write(buffer, 0, buffer.Length);
                            }

                            buffer = ms.ToArray();
                        }

                        response.AddHeader("Content-Encoding", "gzip");
                    }

                    if (!response.SendChunked)
                        response.ContentLength64 = buffer.LongLength;

                    response.OutputStream.BeginWrite(buffer, 0, buffer.Length, ResponseWriteFinished, Tuple.Create(request, response, requestHandler));
                }
            }
            catch (Exception e)
            {
                //fill out request end time to get an actual count in case the exception is thrown in response.Write
                request.EndTime = Environment.TickCount;
                int tickdiff = request.EndTime - request.StartTime;

                m_log.ErrorFormat(
                    "[BASE HTTP SERVER]: HandleRequest() threw {0} while processing {1} {2} {3} {4} {5} took {6}ms",
                    e,
                    request.SeqNo,
                    request.HttpMethod,
                    request.Url.AbsolutePath,
                    requestHandler != null ? requestHandler.Name : "",
                    requestHandler != null ? requestHandler.Description : "",
                    tickdiff);
                // note that request.RemoteIPEndPoint is often disposed when we reach here (e.g. remote end has crashed)
            }
        }

        public byte[] SendHTML404(OSHttpResponse response)
        {
            response.StatusCode = 404;
            response.AddHeader("Content-type", "text/html");

            string responseString = GetHTTP404();
            byte[] buffer = Encoding.UTF8.GetBytes(responseString);

            response.SendChunked = false;
            response.ContentLength64 = buffer.Length;
            response.ContentEncoding = Encoding.UTF8;

            return buffer;
        }

 public static void OpenAuthResponseToHttp(OSHttpResponse httpResponse, OutgoingWebResponse openAuthResponse)
 {
     httpResponse.StatusCode = (int)openAuthResponse.Status;
     foreach (string key in openAuthResponse.Headers.Keys)
         httpResponse.AddHeader(key, openAuthResponse.Headers[key]);
     if (!String.IsNullOrEmpty(openAuthResponse.Body))
         AddToBody(httpResponse, openAuthResponse.Body);
 }

        /*public static void OpenAuthResponseToHttp(OSHttpResponse httpResponse, OutgoingWebResponse openAuthResponse)
        {
            httpResponse.StatusCode = (int)openAuthResponse.Status;
            foreach (string key in openAuthResponse.Headers.Keys)
                httpResponse.AddHeader(key, openAuthResponse.Headers[key]);
            if (!String.IsNullOrEmpty(openAuthResponse.Body))
                AddToBody(httpResponse, openAuthResponse.Body);
        }*/

        public static byte[] MakeOpenAuthResponse(OSHttpResponse httpResponse, OutgoingWebResponse openAuthResponse)
        {
            httpResponse.StatusCode = (int)openAuthResponse.Status;
            foreach (string key in openAuthResponse.Headers.Keys)
                httpResponse.AddHeader(key, openAuthResponse.Headers[key]);
            if (!String.IsNullOrEmpty(openAuthResponse.Body))
                return Encoding.UTF8.GetBytes(openAuthResponse.Body);
            else
                return Utils.EmptyBytes;
        }

        /// <summary>
        /// Returns information about a mumble server via a REST Request
        /// </summary>
        /// <param name="request"></param>
        /// <param name="path"></param>
        /// <param name="param">A string representing the sim's UUID</param>
        /// <param name="httpRequest">HTTP request header object</param>
        /// <param name="httpResponse">HTTP response header object</param>
        /// <returns>Information about the mumble server in http response headers</returns>
        public string RestGetMumbleServerInfo(Scene scene, string request, string path, string param,
                                       OSHttpRequest httpRequest, OSHttpResponse httpResponse)
        {
            if (m_murmurd_host == null)
            {
                httpResponse.StatusCode = 404;
                httpResponse.StatusDescription = "Not Found";

                string message = "[MurmurVoice]: Server info request from " + httpRequest.RemoteIPEndPoint.Address + ". Cannot send response, module is not configured properly.";
                m_log.Warn(message);
                return "Mumble server info is not available.";
            }
            if (httpRequest.Headers.GetValues("avatar_uuid") == null)
            {
                httpResponse.StatusCode = 400;
                httpResponse.StatusDescription = "Bad Request";

                string message = "[MurmurVoice]: Invalid server info request from " + httpRequest.RemoteIPEndPoint.Address + "";
                m_log.Warn(message);
                return "avatar_uuid header is missing";
            }
                
            string avatar_uuid = httpRequest.Headers.GetValues("avatar_uuid")[0];
            string responseBody = String.Empty;
            UUID avatarId;
            if (UUID.TryParse(avatar_uuid, out avatarId))
            {
                if (scene == null) throw new Exception("[MurmurVoice] Invalid scene.");

                ServerManager manager = GetServerManager(scene);
                Agent agent = manager.Agent.GetOrCreate(avatarId, scene);

                string channel_uri;

                ScenePresence avatar = scene.GetScenePresence(avatarId);
                
                // get channel_uri: check first whether estate
                // settings allow voice, then whether parcel allows
                // voice, if all do retrieve or obtain the parcel
                // voice channel
                LandData land = scene.GetLandData(avatar.AbsolutePosition.X, avatar.AbsolutePosition.Y);
                if (null == land) 
                    throw new Exception(String.Format("region \"{0}\": avatar \"{1}\": land data not yet available",
                                                      scene.RegionInfo.RegionName, avatar.Name));

                m_log.DebugFormat("[MurmurVoice] region \"{0}\": Parcel \"{1}\" ({2}): avatar \"{3}\": request: {4}, path: {5}, param: {6}",
                                  scene.RegionInfo.RegionName, land.Name, land.LocalID, avatar.Name, request, path, param);

                if (((land.Flags & (uint)ParcelFlags.AllowVoiceChat) > 0) && scene.RegionInfo.EstateSettings.AllowVoice)
                {
                    agent.channel = manager.Channel.GetOrCreate(ChannelName(scene, land));

                    // Host/port pair for voice server
                    channel_uri = String.Format("{0}:{1}", m_murmurd_host, m_murmurd_port);

                    if (agent.session > 0)
                    {
                        Murmur.User state = manager.Server.getState(agent.session);
                        GetServerCallback(scene).AddUserToChan(state, agent.channel);
                    }

                    m_log.InfoFormat("[MurmurVoice] {0}", channel_uri);
                }
                else
                {
                    m_log.DebugFormat("[MurmurVoice] Voice not enabled.");
                    channel_uri = "";
                }
                string m_context = "Mumble voice system";

                httpResponse.AddHeader("Mumble-Server", m_murmurd_host);
                httpResponse.AddHeader("Mumble-Version", m_server_version);
                httpResponse.AddHeader("Mumble-Channel", channel_uri);
                httpResponse.AddHeader("Mumble-User", avatar_uuid);
                httpResponse.AddHeader("Mumble-Password", agent.pass);
                httpResponse.AddHeader("Mumble-Avatar-Id", avatar_uuid);
                httpResponse.AddHeader("Mumble-Context-Id", m_context);

                responseBody += "Mumble-Server: " + m_murmurd_host + "\n";
                responseBody += "Mumble-Version: " + m_server_version + "\n";
                responseBody += "Mumble-Channel: " + channel_uri + "\n";
                responseBody += "Mumble-User: " + avatar_uuid + "\n";
                responseBody += "Mumble-Password: " + agent.pass + "\n";
                responseBody += "Mumble-Avatar-Id: " + avatar_uuid + "\n";
                responseBody += "Mumble-Context-Id: " + m_context + "\n";

                string log_message = "[MurmurVoice]: Server info request handled for " + httpRequest.RemoteIPEndPoint.Address + "";
                m_log.Info(log_message);
            }
            else
            {
//.........這裏部分代碼省略.........

        byte[] LockHandler(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
        {
            string username;
            if (server.AuthenticateRequest(httpRequest, httpResponse, out username))
            {
                WebDAVLockRequest lockRequest = ParseRequest(httpRequest);

                WebDAVLockResponse lockResponse = server.OnLockConnector(lockRequest);
                if (lockResponse == null)
                {
                    httpResponse.StatusCode = (int)HttpStatusCode.InternalServerError;
                    return OpenMetaverse.Utils.EmptyBytes;
                }

                if (lockResponse.HttpStatusCode == HttpStatusCode.OK || lockResponse.HttpStatusCode == HttpStatusCode.Created)
                {
                    using (MemoryStream responseStream = new MemoryStream())
                    {
                        using (XmlTextWriter xmlWriter = new XmlTextWriter(responseStream, Encoding.ASCII))
                        {
                            xmlWriter.Formatting = Formatting.Indented;
                            xmlWriter.IndentChar = '\t';
                            xmlWriter.Indentation = 1;
                            xmlWriter.WriteStartDocument();

                            xmlWriter.WriteStartElement("D", "prop", "DAV:");
                            xmlWriter.WriteStartElement("lockdiscovery", "DAV:");
                            xmlWriter.WriteStartElement("activelock", "DAV:");

                            xmlWriter.WriteStartElement("locktype", "DAV:");
                            xmlWriter.WriteElementString(Enum.GetName(typeof(LockType), lockResponse.LockType), "DAV:", String.Empty); //only legal value available. future extensions might support others
                            xmlWriter.WriteEndElement(); //locktype

                            xmlWriter.WriteStartElement("lockscope", "DAV:");
                            xmlWriter.WriteElementString(Enum.GetName(typeof(LockScope), lockResponse.LockScope), "DAV:", String.Empty); //possible values "exclusive" or "shared"
                            xmlWriter.WriteEndElement(); //lockscope

                            xmlWriter.WriteStartElement("depth", "DAV:");
                            xmlWriter.WriteValue(lockResponse.Depth);
                            xmlWriter.WriteEndElement(); //depth

                            //The server must save this identifier and return it in the lockdiscovery property so that other users and other client software can see some information about the lock creator.
                            xmlWriter.WriteStartElement("owner", "DAV:");
                            if (lockResponse.OwnerNamespaceUri != null && lockResponse.OwnerNamespaceUri != String.Empty)
                            {
                                xmlWriter.WriteAttributeString("xmlns:a", lockResponse.OwnerNamespaceUri);
                            }
                            if (lockResponse.OwnerValue != null && lockResponse.OwnerValue != String.Empty)
                            {
                                xmlWriter.WriteValue(lockResponse.OwnerValue);
                            }
                            else
                            {
                                foreach (KeyValuePair<string, string> kvp in lockResponse.OwnerValues)
                                {
                                    xmlWriter.WriteElementString(kvp.Key, "DAV:", kvp.Value);
                                }
                            }
                            //xmlWriter.WriteElementString("lock-user", "DAV:", username);
                            //xmlWriter.WriteElementString("created-by", "DAV:", "Some user");
                            xmlWriter.WriteEndElement(); //owner

                            xmlWriter.WriteElementString("timeout", "DAV:", lockResponse.Timeout);

                            xmlWriter.WriteStartElement("locktoken", "DAV:");
                            xmlWriter.WriteElementString("href", "DAV:", lockResponse.LockToken);
                            xmlWriter.WriteEndElement();
                            httpResponse.AddHeader("Lock-Token", lockResponse.LockToken); //add lock token also to header

                            xmlWriter.WriteEndElement(); //activelock
                            xmlWriter.WriteEndElement(); //lockdiscovery
                            xmlWriter.WriteEndElement(); //prop

                            xmlWriter.WriteEndDocument();
                            xmlWriter.Flush();

                            httpResponse.StatusCode = (int)lockResponse.HttpStatusCode;

                            byte[] bytes = responseStream.ToArray();
                            httpResponse.ContentLength = bytes.Length;
                            return bytes;
                        }
                    }
                }
                else
                {
                    httpResponse.StatusCode = (int)lockResponse.HttpStatusCode;
                    return OpenMetaverse.Utils.EmptyBytes;
                }
            }

            return OpenMetaverse.Utils.EmptyBytes;
        }

//.........這裏部分代碼省略.........
                {
                    httpResponse.StatusCode = (int)HttpStatusCode.BadRequest;
                    OpenAuthHelper.AddToBody(httpResponse, "Invalid or missing OpenID callback data");
                }

                #endregion OpenID Callback
            }
            else if (httpRequest.Url.AbsolutePath.EndsWith("oauth_callback"))
            {
                #region OAuth Callback

                ServiceRequestsData stateData;
                string requestToken = OpenAuthHelper.GetQueryValue(httpRequest.Url.Query, "oauth_token");

                if (!String.IsNullOrEmpty(requestToken) && CableBeachState.CurrentServiceRequests.TryGetValue(requestToken, out stateData))
                {
                    ServiceIdentifier serviceIdentifier = CableBeachState.GetCurrentService(stateData.ServiceRequirements);
                    Service service;
                    CapabilityRequirements capRequirements;

                    if (serviceIdentifier != null)
                    {
                        if (stateData.Services.TryGetValue(serviceIdentifier, out service) &&
                            stateData.ServiceRequirements.TryGetValue(serviceIdentifier, out capRequirements))
                        {
                            try
                            {
                                OAuthConsumer consumer = new OAuthConsumer(OpenAuthHelper.CreateServiceProviderDescription(service), CableBeachState.OAuthTokenManager);
                                AuthorizedTokenResponse tokenResponse = consumer.ProcessUserAuthorization(OpenAuthHelper.GetRequestInfo(httpRequest));

                                // We actually don't need the access token at all since the capabilities should be in this response.
                                // Parse the capabilities out of ExtraData
                                CapabilityRequirements newCaps = new CapabilityRequirements();
                                foreach (KeyValuePair<string, string> capability in tokenResponse.ExtraData)
                                {
                                    Uri capIdentifier, capUri;
                                    if (Uri.TryCreate(capability.Key, UriKind.Absolute, out capIdentifier) &&
                                        Uri.TryCreate(capability.Value, UriKind.Absolute, out capUri))
                                    {
                                        newCaps[capIdentifier] = capUri;
                                    }
                                }

                                m_log.Info("[CABLE BEACH LOGIN]: Fetched " + newCaps.Count + " capabilities through OAuth from " + service.OAuthGetAccessToken);

                                // Update the capabilities for this service
                                stateData.ServiceRequirements[serviceIdentifier] = newCaps;
                            }
                            catch (Exception ex)
                            {
                                m_log.Error("[CABLE BEACH LOGIN]: Failed to exchange request token for capabilities at " + service.OAuthGetAccessToken + ": " + ex.Message);
                                CableBeachState.SendLoginTemplate(httpResponse, null, "OAuth request to " + service.OAuthGetAccessToken + " failed: " + ex.Message);
                                return;
                            }
                        }
                        else
                        {
                            m_log.Error("[CABLE BEACH LOGIN]: OAuth state data corrupted, could not find service or service requirements for " + serviceIdentifier);
                            CableBeachState.SendLoginTemplate(httpResponse, null, "OAuth state data corrupted, please try again");
                            return;
                        }
                    }
                    else
                    {
                        m_log.Warn("[CABLE BEACH LOGIN]: OAuth callback fired but there are no unfulfilled services. Could be a browser refresh");
                    }

                    // Check if we need to continue the cap requesting process
                    CableBeachState.GetCapabilitiesOrCompleteLogin(httpRequest, httpResponse, stateData, requestToken);
                }
                else
                {
                    // A number of different things could lead here (incomplete login sequence, browser refresh of a completed sequence).
                    // Safest thing to do would be to redirect back to the login screen
                    httpResponse.StatusCode = (int)HttpStatusCode.Found;
                    httpResponse.AddHeader("Location", new Uri(CableBeachState.UserServerUrl, "/login/").ToString());
                }

                #endregion OAuth Callback
            }
            else
            {
                // Make sure we are starting from the correct URL
                if (httpRequest.Url.Authority != CableBeachState.UserServerUrl.Authority)
                {
                    m_log.Debug("[CABLE BEACH LOGIN]: Redirecting from " + httpRequest.Url + " to " + CableBeachState.UserServerUrl);
                    httpResponse.StatusCode = (int)HttpStatusCode.Redirect;
                    httpResponse.RedirectLocation = new Uri(CableBeachState.UserServerUrl, "/login/").ToString();
                }
                else if (httpRequest.Query.ContainsKey("openid_identifier"))
                {
                    OpenIDLoginFormHandler(httpRequest, httpResponse, httpRequest.Query["openid_identifier"] as string);
                }
                else
                {
                    // TODO: Check for a client cookie with an authenticated session
                    CableBeachState.SendLoginTemplate(httpResponse, null, null);
                }
            }
        }

        /// <summary>
        /// Handles all GET and POST requests for Facebook Connect logins
        /// </summary>
        public void Handle(string requestPath, Stream request, Stream response, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
        {
            if (!CanHandle(httpRequest.Url))
            {
                httpResponse.StatusCode = (int)HttpStatusCode.NotFound;
                OpenAuthHelper.AddToBody(httpResponse, "File not found");
                return;
            }

            try
            {
                string path = GetPath(httpRequest.Url);
                string extension = GetFileExtension(path);
                if (extension == null)
                {
                    httpResponse.StatusCode = (int)HttpStatusCode.UnsupportedMediaType;
                    OpenAuthHelper.AddToBody(httpResponse, "Unsupported media type");
                    return;
                }

                if (m_mimeTypes.ContainsKey(extension))
                {
                    httpResponse.ContentType = m_mimeTypes[extension];
                }
                else
                {
                    httpResponse.StatusCode = (int)HttpStatusCode.UnsupportedMediaType;
                    OpenAuthHelper.AddToBody(httpResponse, "Unsupported media type");
                    return;
                }

                using (FileStream stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
                {
                    if (!String.IsNullOrEmpty(httpRequest.Headers["if-modified-since"]))
                    {
                        DateTime lastRequest = DateTime.Parse(httpRequest.Headers["if-modified-since"]);
                        if (lastRequest.CompareTo(File.GetLastWriteTime(path)) <= 0)
                            httpResponse.StatusCode = (int)HttpStatusCode.NotModified;
                    }

                    httpResponse.AddHeader("Last-modified", File.GetLastWriteTime(path).ToString("r"));
                    httpResponse.ContentLength = stream.Length;

                    if (!httpRequest.HttpMethod.Equals("HEADERS", StringComparison.InvariantCultureIgnoreCase) &&
                        httpResponse.StatusCode != (int)HttpStatusCode.NotModified)
                    {
                        OpenAuthHelper.CopyTo(stream, httpResponse.OutputStream, (int)stream.Length);
                    }
                }
            }
            catch (FileNotFoundException)
            {
                httpResponse.StatusCode = (int)HttpStatusCode.NotFound;
                OpenAuthHelper.AddToBody(httpResponse, "File not found");
            }
        }