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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.ipcamera.internal.onvif;
  14
  15 import static org.openhab.binding.ipcamera.internal.IpCameraBindingConstants.*;
  16
  17 import java.net.InetSocketAddress;
  18 import java.nio.charset.StandardCharsets;
  19 import java.security.MessageDigest;
  20 import java.security.NoSuchAlgorithmException;
  21 import java.text.SimpleDateFormat;
  22 import java.util.ArrayList;
  23 import java.util.Base64;
  24 import java.util.Date;
  25 import java.util.LinkedList;
  26 import java.util.List;
  27 import java.util.Random;
  28 import java.util.TimeZone;
  29 import java.util.concurrent.Executors;
  30 import java.util.concurrent.ScheduledExecutorService;
  31 import java.util.concurrent.TimeUnit;
  32 import java.util.concurrent.locks.ReentrantLock;
  33
  34 import org.eclipse.jdt.annotation.NonNullByDefault;
  35 import org.eclipse.jdt.annotation.Nullable;
  36 import org.openhab.binding.ipcamera.internal.Helper;
  37 import org.openhab.binding.ipcamera.internal.handler.IpCameraHandler;
  38 import org.openhab.core.library.types.OnOffType;
  39 import org.openhab.core.thing.ChannelUID;
  40 import org.openhab.core.types.StateOption;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 import io.netty.bootstrap.Bootstrap;
  45 import io.netty.buffer.ByteBuf;
  46 import io.netty.buffer.Unpooled;
  47 import io.netty.channel.Channel;
  48 import io.netty.channel.ChannelFuture;
  49 import io.netty.channel.ChannelFutureListener;
  50 import io.netty.channel.ChannelInitializer;
  51 import io.netty.channel.ChannelOption;
  52 import io.netty.channel.EventLoopGroup;
  53 import io.netty.channel.nio.NioEventLoopGroup;
  54 import io.netty.channel.socket.SocketChannel;
  55 import io.netty.channel.socket.nio.NioSocketChannel;
  56 import io.netty.handler.codec.http.DefaultFullHttpRequest;
  57 import io.netty.handler.codec.http.FullHttpRequest;
  58 import io.netty.handler.codec.http.HttpClientCodec;
  59 import io.netty.handler.codec.http.HttpHeaderValues;
  60 import io.netty.handler.codec.http.HttpMethod;
  61 import io.netty.handler.codec.http.HttpRequest;
  62 import io.netty.handler.codec.http.HttpVersion;
  63 import io.netty.handler.timeout.IdleStateHandler;
  64
  65 /**
  66  * The {@link OnvifConnection} This is a basic Netty implementation for connecting and communicating to ONVIF cameras.
  67  *
  68  *
  69  *
  70  * @author Matthew Skinner - Initial contribution
  71  */
  72
  73 @NonNullByDefault
  74 public class OnvifConnection {
  75     public static enum RequestType {
  76         AbsoluteMove,
  77         AddPTZConfiguration,
  78         ContinuousMoveLeft,
  79         ContinuousMoveRight,
  80         ContinuousMoveUp,
  81         ContinuousMoveDown,
  82         Stop,
  83         ContinuousMoveIn,
  84         ContinuousMoveOut,
  85         CreatePullPointSubscription,
  86         GetCapabilities,
  87         GetDeviceInformation,
  88         GetProfiles,
  89         GetServiceCapabilities,
  90         GetSnapshotUri,
  91         GetStreamUri,
  92         GetSystemDateAndTime,
  93         Subscribe,
  94         Unsubscribe,
  95         PullMessages,
  96         GetEventProperties,
  97         RelativeMoveLeft,
  98         RelativeMoveRight,
  99         RelativeMoveUp,
 100         RelativeMoveDown,
 101         RelativeMoveIn,
 102         RelativeMoveOut,
 103         Renew,
 104         GetConfigurations,
 105         GetConfigurationOptions,
 106         GetConfiguration,
 107         SetConfiguration,
 108         GetNodes,
 109         GetStatus,
 110         GotoPreset,
 111         GetPresets
 112     }
 113
 114     private final Logger logger = LoggerFactory.getLogger(getClass());
 115     private ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(2);
 116     private @Nullable Bootstrap bootstrap;
 117     private EventLoopGroup mainEventLoopGroup = new NioEventLoopGroup(2);
 118     private ReentrantLock connecting = new ReentrantLock();
 119     private String ipAddress = "";
 120     private String user = "";
 121     private String password = "";
 122     private int onvifPort = 80;
 123     private String deviceXAddr = "http://" + ipAddress + "/onvif/device_service";
 124     private String eventXAddr = "http://" + ipAddress + "/onvif/device_service";
 125     private String mediaXAddr = "http://" + ipAddress + "/onvif/device_service";
 126     @SuppressWarnings("unused")
 127     private String imagingXAddr = "http://" + ipAddress + "/onvif/device_service";
 128     private String ptzXAddr = "http://" + ipAddress + "/onvif/ptz_service";
 129     private String subscriptionXAddr = "http://" + ipAddress + "/onvif/device_service";
 130     private boolean isConnected = false;
 131     private int mediaProfileIndex = 0;
 132     private String snapshotUri = "";
 133     private String rtspUri = "";
 134     private IpCameraHandler ipCameraHandler;
 135     private boolean usingEvents = false;
 136
 137     // These hold the cameras PTZ position in the range that the camera uses, ie
 138     // mine is -1 to +1
 139     private Float panRangeMin = -1.0f;
 140     private Float panRangeMax = 1.0f;
 141     private Float tiltRangeMin = -1.0f;
 142     private Float tiltRangeMax = 1.0f;
 143     private Float zoomMin = 0.0f;
 144     private Float zoomMax = 1.0f;
 145     // These hold the PTZ values for updating Openhabs controls in 0-100 range
 146     private Float currentPanPercentage = 0.0f;
 147     private Float currentTiltPercentage = 0.0f;
 148     private Float currentZoomPercentage = 0.0f;
 149     private Float currentPanCamValue = 0.0f;
 150     private Float currentTiltCamValue = 0.0f;
 151     private Float currentZoomCamValue = 0.0f;
 152     private String ptzNodeToken = "000";
 153     private String ptzConfigToken = "000";
 154     private int presetTokenIndex = 0;
 155     private List<String> presetTokens = new LinkedList<>();
 156     private List<String> presetNames = new LinkedList<>();
 157     private List<String> mediaProfileTokens = new LinkedList<>();
 158     private boolean ptzDevice = true;
 159
 160     public OnvifConnection(IpCameraHandler ipCameraHandler, String ipAddress, String user, String password) {
 161         this.ipCameraHandler = ipCameraHandler;
 162         if (!ipAddress.isEmpty()) {
 163             this.user = user;
 164             this.password = password;
 165             getIPandPortFromUrl(ipAddress);
 166         }
 167     }
 168
 169     private String getXml(RequestType requestType) {
 170         try {
 171             switch (requestType) {
 172                 case AbsoluteMove:
 173                     return "<AbsoluteMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 174                             + mediaProfileTokens.get(mediaProfileIndex) + "</ProfileToken><Position><PanTilt x=\""
 175                             + currentPanCamValue + "\" y=\"" + currentTiltCamValue
 176                             + "\" space=\"http://www.onvif.org/ver10/tptz/PanTiltSpaces/PositionGenericSpace\">\n"
 177                             + "</PanTilt>\n" + "<Zoom x=\"" + currentZoomCamValue
 178                             + "\" space=\"http://www.onvif.org/ver10/tptz/ZoomSpaces/PositionGenericSpace\">\n"
 179                             + "</Zoom>\n" + "</Position>\n"
 180                             + "<Speed><PanTilt x=\"0.1\" y=\"0.1\" space=\"http://www.onvif.org/ver10/tptz/PanTiltSpaces/GenericSpeedSpace\"></PanTilt><Zoom x=\"1.0\" space=\"http://www.onvif.org/ver10/tptz/ZoomSpaces/ZoomGenericSpeedSpace\"></Zoom>\n"
 181                             + "</Speed></AbsoluteMove>";
 182                 case AddPTZConfiguration: // not tested to work yet
 183                     return "<AddPTZConfiguration xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 184                             + mediaProfileTokens.get(mediaProfileIndex) + "</ProfileToken><ConfigurationToken>"
 185                             + ptzConfigToken + "</ConfigurationToken></AddPTZConfiguration>";
 186                 case ContinuousMoveLeft:
 187                     return "<ContinuousMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 188                             + mediaProfileTokens.get(mediaProfileIndex)
 189                             + "</ProfileToken><Velocity><PanTilt x=\"-0.5\" y=\"0\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Velocity></ContinuousMove>";
 190                 case ContinuousMoveRight:
 191                     return "<ContinuousMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 192                             + mediaProfileTokens.get(mediaProfileIndex)
 193                             + "</ProfileToken><Velocity><PanTilt x=\"0.5\" y=\"0\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Velocity></ContinuousMove>";
 194                 case ContinuousMoveUp:
 195                     return "<ContinuousMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 196                             + mediaProfileTokens.get(mediaProfileIndex)
 197                             + "</ProfileToken><Velocity><PanTilt x=\"0\" y=\"-0.5\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Velocity></ContinuousMove>";
 198                 case ContinuousMoveDown:
 199                     return "<ContinuousMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 200                             + mediaProfileTokens.get(mediaProfileIndex)
 201                             + "</ProfileToken><Velocity><PanTilt x=\"0\" y=\"0.5\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Velocity></ContinuousMove>";
 202                 case Stop:
 203                     return "<Stop xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 204                             + mediaProfileTokens.get(mediaProfileIndex)
 205                             + "</ProfileToken><PanTilt>true</PanTilt><Zoom>true</Zoom></Stop>";
 206                 case ContinuousMoveIn:
 207                     return "<ContinuousMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 208                             + mediaProfileTokens.get(mediaProfileIndex)
 209                             + "</ProfileToken><Velocity><Zoom x=\"0.5\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Velocity></ContinuousMove>";
 210                 case ContinuousMoveOut:
 211                     return "<ContinuousMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 212                             + mediaProfileTokens.get(mediaProfileIndex)
 213                             + "</ProfileToken><Velocity><Zoom x=\"-0.5\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Velocity></ContinuousMove>";
 214                 case CreatePullPointSubscription:
 215                     return "<CreatePullPointSubscription xmlns=\"http://www.onvif.org/ver10/events/wsdl\"><InitialTerminationTime>PT600S</InitialTerminationTime></CreatePullPointSubscription>";
 216                 case GetCapabilities:
 217                     return "<GetCapabilities xmlns=\"http://www.onvif.org/ver10/device/wsdl\"><Category>All</Category></GetCapabilities>";
 218
 219                 case GetDeviceInformation:
 220                     return "<GetDeviceInformation xmlns=\"http://www.onvif.org/ver10/device/wsdl\"/>";
 221                 case GetProfiles:
 222                     return "<GetProfiles xmlns=\"http://www.onvif.org/ver10/media/wsdl\"/>";
 223                 case GetServiceCapabilities:
 224                     return "<GetServiceCapabilities xmlns=\"http://docs.oasis-open.org/wsn/b-2/\"></GetServiceCapabilities>";
 225                 case GetSnapshotUri:
 226                     return "<GetSnapshotUri xmlns=\"http://www.onvif.org/ver10/media/wsdl\"><ProfileToken>"
 227                             + mediaProfileTokens.get(mediaProfileIndex) + "</ProfileToken></GetSnapshotUri>";
 228                 case GetStreamUri:
 229                     return "<GetStreamUri xmlns=\"http://www.onvif.org/ver10/media/wsdl\"><StreamSetup><Stream xmlns=\"http://www.onvif.org/ver10/schema\">RTP-Unicast</Stream><Transport xmlns=\"http://www.onvif.org/ver10/schema\"><Protocol>RTSP</Protocol></Transport></StreamSetup><ProfileToken>"
 230                             + mediaProfileTokens.get(mediaProfileIndex) + "</ProfileToken></GetStreamUri>";
 231                 case GetSystemDateAndTime:
 232                     return "<GetSystemDateAndTime xmlns=\"http://www.onvif.org/ver10/device/wsdl\"/>";
 233                 case Subscribe:
 234                     return "<Subscribe xmlns=\"http://docs.oasis-open.org/wsn/b-2/\"><ConsumerReference><Address>http://"
 235                             + ipCameraHandler.hostIp + ":" + SERVLET_PORT + "/ipcamera/"
 236                             + ipCameraHandler.getThing().getUID().getId()
 237                             + "/OnvifEvent</Address></ConsumerReference></Subscribe>";
 238                 case Unsubscribe:
 239                     return "<Unsubscribe xmlns=\"http://docs.oasis-open.org/wsn/b-2/\"></Unsubscribe>";
 240                 case PullMessages:
 241                     return "<PullMessages xmlns=\"http://www.onvif.org/ver10/events/wsdl\"><Timeout>PT8S</Timeout><MessageLimit>1</MessageLimit></PullMessages>";
 242                 case GetEventProperties:
 243                     return "<GetEventProperties xmlns=\"http://www.onvif.org/ver10/events/wsdl\"/>";
 244                 case RelativeMoveLeft:
 245                     return "<RelativeMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 246                             + mediaProfileTokens.get(mediaProfileIndex)
 247                             + "</ProfileToken><Translation><PanTilt x=\"0.05000000\" y=\"0\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Translation></RelativeMove>";
 248                 case RelativeMoveRight:
 249                     return "<RelativeMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 250                             + mediaProfileTokens.get(mediaProfileIndex)
 251                             + "</ProfileToken><Translation><PanTilt x=\"-0.05000000\" y=\"0\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Translation></RelativeMove>";
 252                 case RelativeMoveUp:
 253                     return "<RelativeMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 254                             + mediaProfileTokens.get(mediaProfileIndex)
 255                             + "</ProfileToken><Translation><PanTilt x=\"0\" y=\"0.100000000\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Translation></RelativeMove>";
 256                 case RelativeMoveDown:
 257                     return "<RelativeMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 258                             + mediaProfileTokens.get(mediaProfileIndex)
 259                             + "</ProfileToken><Translation><PanTilt x=\"0\" y=\"-0.100000000\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Translation></RelativeMove>";
 260                 case RelativeMoveIn:
 261                     return "<RelativeMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 262                             + mediaProfileTokens.get(mediaProfileIndex)
 263                             + "</ProfileToken><Translation><Zoom x=\"0.0240506344\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Translation></RelativeMove>";
 264                 case RelativeMoveOut:
 265                     return "<RelativeMove xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 266                             + mediaProfileTokens.get(mediaProfileIndex)
 267                             + "</ProfileToken><Translation><Zoom x=\"-0.0240506344\" xmlns=\"http://www.onvif.org/ver10/schema\"/></Translation></RelativeMove>";
 268                 case Renew:
 269                     return "<Renew xmlns=\"http://docs.oasis-open.org/wsn/b-2\"><TerminationTime>PT1M</TerminationTime></Renew>";
 270                 case GetConfigurations:
 271                     return "<GetConfigurations xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"></GetConfigurations>";
 272                 case GetConfigurationOptions:
 273                     return "<GetConfigurationOptions xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ConfigurationToken>"
 274                             + ptzConfigToken + "</ConfigurationToken></GetConfigurationOptions>";
 275                 case GetConfiguration:
 276                     return "<GetConfiguration xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><PTZConfigurationToken>"
 277                             + ptzConfigToken + "</PTZConfigurationToken></GetConfiguration>";
 278                 case SetConfiguration:// not tested to work yet
 279                     return "<SetConfiguration xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><PTZConfiguration><NodeToken>"
 280                             + ptzNodeToken
 281                             + "</NodeToken><DefaultAbsolutePantTiltPositionSpace>AbsolutePanTiltPositionSpace</DefaultAbsolutePantTiltPositionSpace><DefaultAbsoluteZoomPositionSpace>AbsoluteZoomPositionSpace</DefaultAbsoluteZoomPositionSpace></PTZConfiguration></SetConfiguration>";
 282                 case GetNodes:
 283                     return "<GetNodes xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"></GetNodes>";
 284                 case GetStatus:
 285                     return "<GetStatus xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 286                             + mediaProfileTokens.get(mediaProfileIndex) + "</ProfileToken></GetStatus>";
 287                 case GotoPreset:
 288                     return "<GotoPreset xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 289                             + mediaProfileTokens.get(mediaProfileIndex) + "</ProfileToken><PresetToken>"
 290                             + presetTokens.get(presetTokenIndex) + "</PresetToken></GotoPreset>";
 291                 case GetPresets:
 292                     return "<GetPresets xmlns=\"http://www.onvif.org/ver20/ptz/wsdl\"><ProfileToken>"
 293                             + mediaProfileTokens.get(mediaProfileIndex) + "</ProfileToken></GetPresets>";
 294             }
 295         } catch (IndexOutOfBoundsException e) {
 296             if (!isConnected) {
 297                 logger.debug("IndexOutOfBoundsException occured, camera is not connected via ONVIF: {}",
 298                         e.getMessage());
 299             } else {
 300                 logger.debug("IndexOutOfBoundsException occured, {}", e.getMessage());
 301             }
 302         }
 303         return "notfound";
 304     }
 305
 306     public void processReply(String message) {
 307         logger.trace("Onvif reply is:{}", message);
 308         if (message.contains("PullMessagesResponse")) {
 309             eventRecieved(message);
 310         } else if (message.contains("RenewResponse")) {
 311             sendOnvifRequest(requestBuilder(RequestType.PullMessages, subscriptionXAddr));
 312         } else if (message.contains("GetSystemDateAndTimeResponse")) {// 1st to be sent.
 313             connecting.lock();
 314             try {
 315                 isConnected = true;
 316             } finally {
 317                 connecting.unlock();
 318             }
 319             sendOnvifRequest(requestBuilder(RequestType.GetCapabilities, deviceXAddr));
 320             parseDateAndTime(message);
 321             logger.debug("Openhabs UTC dateTime is:{}", getUTCdateTime());
 322         } else if (message.contains("GetCapabilitiesResponse")) {// 2nd to be sent.
 323             parseXAddr(message);
 324             sendOnvifRequest(requestBuilder(RequestType.GetProfiles, mediaXAddr));
 325         } else if (message.contains("GetProfilesResponse")) {// 3rd to be sent.
 326             parseProfiles(message);
 327             sendOnvifRequest(requestBuilder(RequestType.GetSnapshotUri, mediaXAddr));
 328             sendOnvifRequest(requestBuilder(RequestType.GetStreamUri, mediaXAddr));
 329             if (ptzDevice) {
 330                 sendPTZRequest(RequestType.GetNodes);
 331             }
 332             if (usingEvents) {// stops API cameras from getting sent ONVIF events.
 333                 sendOnvifRequest(requestBuilder(RequestType.GetEventProperties, eventXAddr));
 334                 sendOnvifRequest(requestBuilder(RequestType.GetServiceCapabilities, eventXAddr));
 335             }
 336         } else if (message.contains("GetServiceCapabilitiesResponse")) {
 337             if (message.contains("WSSubscriptionPolicySupport=\"true\"")) {
 338                 sendOnvifRequest(requestBuilder(RequestType.Subscribe, eventXAddr));
 339             }
 340         } else if (message.contains("GetEventPropertiesResponse")) {
 341             sendOnvifRequest(requestBuilder(RequestType.CreatePullPointSubscription, eventXAddr));
 342         } else if (message.contains("CreatePullPointSubscriptionResponse")) {
 343             subscriptionXAddr = Helper.fetchXML(message, "SubscriptionReference>", "Address>");
 344             logger.debug("subscriptionXAddr={}", subscriptionXAddr);
 345             sendOnvifRequest(requestBuilder(RequestType.PullMessages, subscriptionXAddr));
 346         } else if (message.contains("GetStatusResponse")) {
 347             processPTZLocation(message);
 348         } else if (message.contains("GetPresetsResponse")) {
 349             parsePresets(message);
 350         } else if (message.contains("GetConfigurationsResponse")) {
 351             sendPTZRequest(RequestType.GetPresets);
 352             ptzConfigToken = Helper.fetchXML(message, "PTZConfiguration", "token=\"");
 353             logger.debug("ptzConfigToken={}", ptzConfigToken);
 354             sendPTZRequest(RequestType.GetConfigurationOptions);
 355         } else if (message.contains("GetNodesResponse")) {
 356             sendPTZRequest(RequestType.GetStatus);
 357             ptzNodeToken = Helper.fetchXML(message, "", "token=\"");
 358             logger.debug("ptzNodeToken={}", ptzNodeToken);
 359             sendPTZRequest(RequestType.GetConfigurations);
 360         } else if (message.contains("GetDeviceInformationResponse")) {
 361             logger.debug("GetDeviceInformationResponse recieved");
 362         } else if (message.contains("GetSnapshotUriResponse")) {
 363             snapshotUri = removeIPfromUrl(Helper.fetchXML(message, ":MediaUri", ":Uri"));
 364             logger.debug("GetSnapshotUri:{}", snapshotUri);
 365             if (ipCameraHandler.snapshotUri.isEmpty()
 366                     && !"ffmpeg".equals(ipCameraHandler.cameraConfig.getSnapshotUrl())) {
 367                 ipCameraHandler.snapshotUri = snapshotUri;
 368             }
 369         } else if (message.contains("GetStreamUriResponse")) {
 370             rtspUri = Helper.fetchXML(message, ":MediaUri", ":Uri>");
 371             logger.debug("GetStreamUri:{}", rtspUri);
 372             if (ipCameraHandler.cameraConfig.getFfmpegInput().isEmpty()) {
 373                 ipCameraHandler.rtspUri = rtspUri;
 374             }
 375         }
 376     }
 377
 378     HttpRequest requestBuilder(RequestType requestType, String xAddr) {
 379         logger.trace("Sending ONVIF request:{}", requestType);
 380         String security = "";
 381         String extraEnvelope = "";
 382         String headerTo = "";
 383         String getXmlCache = getXml(requestType);
 384         if (requestType.equals(RequestType.CreatePullPointSubscription) || requestType.equals(RequestType.PullMessages)
 385                 || requestType.equals(RequestType.Renew) || requestType.equals(RequestType.Unsubscribe)) {
 386             headerTo = "<a:To s:mustUnderstand=\"1\">" + xAddr + "</a:To>";
 387             extraEnvelope = " xmlns:a=\"http://www.w3.org/2005/08/addressing\"";
 388         }
 389         String headers;
 390         if (!password.isEmpty() && !requestType.equals(RequestType.GetSystemDateAndTime)) {
 391             String nonce = createNonce();
 392             String dateTime = getUTCdateTime();
 393             String digest = createDigest(nonce, dateTime);
 394             security = "<Security s:mustUnderstand=\"1\" xmlns=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd\"><UsernameToken><Username>"
 395                     + user
 396                     + "</Username><Password Type=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordDigest\">"
 397                     + digest
 398                     + "</Password><Nonce EncodingType=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary\">"
 399                     + encodeBase64(nonce)
 400                     + "</Nonce><Created xmlns=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd\">"
 401                     + dateTime + "</Created></UsernameToken></Security>";
 402             headers = "<s:Header>" + security + headerTo + "</s:Header>";
 403         } else {// GetSystemDateAndTime must not be password protected as per spec.
 404             headers = "";
 405         }
 406         FullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, new HttpMethod("POST"),
 407                 removeIPfromUrl(xAddr));
 408         String actionString = Helper.fetchXML(getXmlCache, requestType.toString(), "xmlns=\"");
 409         request.headers().add("Content-Type",
 410                 "application/soap+xml; charset=utf-8; action=\"" + actionString + "/" + requestType + "\"");
 411         request.headers().add("Charset", "utf-8");
 412         request.headers().set("Host", ipAddress + ":" + onvifPort);
 413         request.headers().set("Connection", HttpHeaderValues.CLOSE);
 414         request.headers().set("Accept-Encoding", "gzip, deflate");
 415         String fullXml = "<s:Envelope xmlns:s=\"http://www.w3.org/2003/05/soap-envelope\"" + extraEnvelope + ">"
 416                 + headers
 417                 + "<s:Body xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">"
 418                 + getXmlCache + "</s:Body></s:Envelope>";
 419         request.headers().add("SOAPAction", "\"" + actionString + "/" + requestType + "\"");
 420         ByteBuf bbuf = Unpooled.copiedBuffer(fullXml, StandardCharsets.UTF_8);
 421         request.headers().set("Content-Length", bbuf.readableBytes());
 422         request.content().clear().writeBytes(bbuf);
 423         return request;
 424     }
 425
 426     /**
 427      * The {@link removeIPfromUrl} Will throw away all text before the cameras IP, also removes the IP and the PORT
 428      * leaving just the URL.
 429      *
 430      * @author Matthew Skinner - Initial contribution
 431      */
 432     String removeIPfromUrl(String url) {
 433         int index = url.indexOf("//");
 434         if (index != -1) {// now remove the :port
 435             index = url.indexOf("/", index + 2);
 436         }
 437         if (index == -1) {
 438             logger.debug("We hit an issue parsing url:{}", url);
 439             return "";
 440         }
 441         return url.substring(index);
 442     }
 443
 444     String extractIPportFromUrl(String url) {
 445         int startIndex = url.indexOf("//") + 2;
 446         int endIndex = url.indexOf("/", startIndex);// skip past any :port to the slash /
 447         if (startIndex != -1 && endIndex != -1) {
 448             return url.substring(startIndex, endIndex);
 449         }
 450         logger.debug("We hit an issue extracting IP:PORT from url:{}", url);
 451         return "";
 452     }
 453
 454     void parseXAddr(String message) {
 455         // Normally I would search '<tt:XAddr>' instead but Foscam needed this work around.
 456         String temp = Helper.fetchXML(message, "<tt:Device", "tt:XAddr");
 457         if (!temp.isEmpty()) {
 458             deviceXAddr = temp;
 459             logger.debug("deviceXAddr:{}", deviceXAddr);
 460         }
 461         temp = Helper.fetchXML(message, "<tt:Events", "tt:XAddr");
 462         if (!temp.isEmpty()) {
 463             subscriptionXAddr = eventXAddr = temp;
 464             logger.debug("eventsXAddr:{}", eventXAddr);
 465         }
 466         temp = Helper.fetchXML(message, "<tt:Media", "tt:XAddr");
 467         if (!temp.isEmpty()) {
 468             mediaXAddr = temp;
 469             logger.debug("mediaXAddr:{}", mediaXAddr);
 470         }
 471
 472         ptzXAddr = Helper.fetchXML(message, "<tt:PTZ", "tt:XAddr");
 473         if (ptzXAddr.isEmpty()) {
 474             ptzDevice = false;
 475             logger.trace("Camera must not support PTZ, it failed to give a <tt:PTZ><tt:XAddr>:{}", message);
 476         } else {
 477             logger.debug("ptzXAddr:{}", ptzXAddr);
 478         }
 479     }
 480
 481     private void parseDateAndTime(String message) {
 482         String minute = Helper.fetchXML(message, "UTCDateTime", "Minute>");
 483         String hour = Helper.fetchXML(message, "UTCDateTime", "Hour>");
 484         String second = Helper.fetchXML(message, "UTCDateTime", "Second>");
 485         String day = Helper.fetchXML(message, "UTCDateTime", "Day>");
 486         String month = Helper.fetchXML(message, "UTCDateTime", "Month>");
 487         String year = Helper.fetchXML(message, "UTCDateTime", "Year>");
 488         logger.debug("Cameras  UTC dateTime is:{}-{}-{}T{}:{}:{}", year, month, day, hour, minute, second);
 489     }
 490
 491     private String getUTCdateTime() {
 492         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
 493         format.setTimeZone(TimeZone.getTimeZone("UTC"));
 494         return format.format(new Date());
 495     }
 496
 497     String createNonce() {
 498         Random nonce = new Random();
 499         return "" + nonce.nextInt();
 500     }
 501
 502     String encodeBase64(String raw) {
 503         return Base64.getEncoder().encodeToString(raw.getBytes());
 504     }
 505
 506     String createDigest(String nOnce, String dateTime) {
 507         String beforeEncryption = nOnce + dateTime + password;
 508         MessageDigest msgDigest;
 509         byte[] encryptedRaw = null;
 510         try {
 511             msgDigest = MessageDigest.getInstance("SHA-1");
 512             msgDigest.reset();
 513             msgDigest.update(beforeEncryption.getBytes(StandardCharsets.UTF_8));
 514             encryptedRaw = msgDigest.digest();
 515         } catch (NoSuchAlgorithmException e) {
 516         }
 517         return Base64.getEncoder().encodeToString(encryptedRaw);
 518     }
 519
 520     @SuppressWarnings("null")
 521     public void sendOnvifRequest(HttpRequest request) {
 522         if (bootstrap == null) {
 523             mainEventLoopGroup = new NioEventLoopGroup(2);
 524             bootstrap = new Bootstrap();
 525             bootstrap.group(mainEventLoopGroup);
 526             bootstrap.channel(NioSocketChannel.class);
 527             bootstrap.option(ChannelOption.SO_KEEPALIVE, true);
 528             bootstrap.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000);
 529             bootstrap.option(ChannelOption.SO_SNDBUF, 1024 * 8);
 530             bootstrap.option(ChannelOption.SO_RCVBUF, 1024 * 1024);
 531             bootstrap.option(ChannelOption.TCP_NODELAY, true);
 532             bootstrap.handler(new ChannelInitializer<SocketChannel>() {
 533
 534                 @Override
 535                 public void initChannel(SocketChannel socketChannel) throws Exception {
 536                     socketChannel.pipeline().addLast("idleStateHandler", new IdleStateHandler(0, 0, 70));
 537                     socketChannel.pipeline().addLast("HttpClientCodec", new HttpClientCodec());
 538                     socketChannel.pipeline().addLast("OnvifCodec", new OnvifCodec(getHandle()));
 539                 }
 540             });
 541         }
 542         if (!mainEventLoopGroup.isShuttingDown()) {
 543             bootstrap.connect(new InetSocketAddress(ipAddress, onvifPort)).addListener(new ChannelFutureListener() {
 544
 545                 @Override
 546                 public void operationComplete(@Nullable ChannelFuture future) {
 547                     if (future == null) {
 548                         return;
 549                     }
 550                     if (future.isSuccess()) {
 551                         Channel ch = future.channel();
 552                         ch.writeAndFlush(request);
 553                     } else { // an error occured
 554                         logger.debug("Camera is not reachable on ONVIF port:{} or the port may be wrong.", onvifPort);
 555                         if (isConnected) {
 556                             disconnect();
 557                         }
 558                     }
 559                 }
 560             });
 561         } else {
 562             logger.debug("ONVIF message not sent as connection is shutting down");
 563         }
 564     }
 565
 566     OnvifConnection getHandle() {
 567         return this;
 568     }
 569
 570     void getIPandPortFromUrl(String url) {
 571         int beginIndex = url.indexOf(":");
 572         int endIndex = url.indexOf("/", beginIndex);
 573         if (beginIndex >= 0 && endIndex == -1) {// 192.168.1.1:8080
 574             ipAddress = url.substring(0, beginIndex);
 575             onvifPort = Integer.parseInt(url.substring(beginIndex + 1));
 576         } else if (beginIndex >= 0 && endIndex > beginIndex) {// 192.168.1.1:8080/foo/bar
 577             ipAddress = url.substring(0, beginIndex);
 578             onvifPort = Integer.parseInt(url.substring(beginIndex + 1, endIndex));
 579         } else {// 192.168.1.1
 580             ipAddress = url;
 581             deviceXAddr = "http://" + ipAddress + "/onvif/device_service";
 582             logger.debug("No Onvif Port found when parsing:{}", url);
 583             return;
 584         }
 585         deviceXAddr = "http://" + ipAddress + ":" + onvifPort + "/onvif/device_service";
 586     }
 587
 588     public void gotoPreset(int index) {
 589         if (ptzDevice) {
 590             if (index > 0) {// 0 is reserved for HOME as cameras seem to start at preset 1.
 591                 if (presetTokens.isEmpty()) {
 592                     logger.warn("Camera did not report any ONVIF preset locations, updating preset tokens now.");
 593                     sendPTZRequest(RequestType.GetPresets);
 594                 } else {
 595                     presetTokenIndex = index - 1;
 596                     sendPTZRequest(RequestType.GotoPreset);
 597                 }
 598             }
 599         }
 600     }
 601
 602     public void eventRecieved(String eventMessage) {
 603         String topic = Helper.fetchXML(eventMessage, "Topic", "tns1:");
 604         String dataName = Helper.fetchXML(eventMessage, "tt:Data", "Name=\"");
 605         String dataValue = Helper.fetchXML(eventMessage, "tt:Data", "Value=\"");
 606         if (!topic.isEmpty()) {
 607             logger.debug("Onvif Event Topic:{}, Data:{}, Value:{}", topic, dataName, dataValue);
 608         }
 609         switch (topic) {
 610             case "RuleEngine/CellMotionDetector/Motion":
 611                 if ("true".equals(dataValue)) {
 612                     ipCameraHandler.motionDetected(CHANNEL_CELL_MOTION_ALARM);
 613                 } else if ("false".equals(dataValue)) {
 614                     ipCameraHandler.noMotionDetected(CHANNEL_CELL_MOTION_ALARM);
 615                 }
 616                 break;
 617             case "VideoSource/MotionAlarm":
 618                 if ("true".equals(dataValue)) {
 619                     ipCameraHandler.motionDetected(CHANNEL_MOTION_ALARM);
 620                 } else if ("false".equals(dataValue)) {
 621                     ipCameraHandler.noMotionDetected(CHANNEL_MOTION_ALARM);
 622                 }
 623                 break;
 624             case "AudioAnalytics/Audio/DetectedSound":
 625                 if ("true".equals(dataValue)) {
 626                     ipCameraHandler.audioDetected();
 627                 } else if ("false".equals(dataValue)) {
 628                     ipCameraHandler.noAudioDetected();
 629                 }
 630                 break;
 631             case "RuleEngine/FieldDetector/ObjectsInside":
 632                 if ("true".equals(dataValue)) {
 633                     ipCameraHandler.motionDetected(CHANNEL_FIELD_DETECTION_ALARM);
 634                 } else if ("false".equals(dataValue)) {
 635                     ipCameraHandler.noMotionDetected(CHANNEL_FIELD_DETECTION_ALARM);
 636                 }
 637                 break;
 638             case "RuleEngine/LineDetector/Crossed":
 639                 if ("ObjectId".equals(dataName)) {
 640                     ipCameraHandler.motionDetected(CHANNEL_LINE_CROSSING_ALARM);
 641                 } else {
 642                     ipCameraHandler.noMotionDetected(CHANNEL_LINE_CROSSING_ALARM);
 643                 }
 644                 break;
 645             case "RuleEngine/TamperDetector/Tamper":
 646                 if ("true".equals(dataValue)) {
 647                     ipCameraHandler.changeAlarmState(CHANNEL_TAMPER_ALARM, OnOffType.ON);
 648                 } else if ("false".equals(dataValue)) {
 649                     ipCameraHandler.changeAlarmState(CHANNEL_TAMPER_ALARM, OnOffType.OFF);
 650                 }
 651                 break;
 652             case "Device/HardwareFailure/StorageFailure":
 653                 if ("true".equals(dataValue)) {
 654                     ipCameraHandler.changeAlarmState(CHANNEL_STORAGE_ALARM, OnOffType.ON);
 655                 } else if ("false".equals(dataValue)) {
 656                     ipCameraHandler.changeAlarmState(CHANNEL_STORAGE_ALARM, OnOffType.OFF);
 657                 }
 658                 break;
 659             case "VideoSource/ImageTooDark/AnalyticsService":
 660             case "VideoSource/ImageTooDark/ImagingService":
 661             case "VideoSource/ImageTooDark/RecordingService":
 662                 if ("true".equals(dataValue)) {
 663                     ipCameraHandler.changeAlarmState(CHANNEL_TOO_DARK_ALARM, OnOffType.ON);
 664                 } else if ("false".equals(dataValue)) {
 665                     ipCameraHandler.changeAlarmState(CHANNEL_TOO_DARK_ALARM, OnOffType.OFF);
 666                 }
 667                 break;
 668             case "VideoSource/GlobalSceneChange/AnalyticsService":
 669             case "VideoSource/GlobalSceneChange/ImagingService":
 670             case "VideoSource/GlobalSceneChange/RecordingService":
 671                 if ("true".equals(dataValue)) {
 672                     ipCameraHandler.changeAlarmState(CHANNEL_SCENE_CHANGE_ALARM, OnOffType.ON);
 673                 } else if ("false".equals(dataValue)) {
 674                     ipCameraHandler.changeAlarmState(CHANNEL_SCENE_CHANGE_ALARM, OnOffType.OFF);
 675                 }
 676                 break;
 677             case "VideoSource/ImageTooBright/AnalyticsService":
 678             case "VideoSource/ImageTooBright/ImagingService":
 679             case "VideoSource/ImageTooBright/RecordingService":
 680                 if ("true".equals(dataValue)) {
 681                     ipCameraHandler.changeAlarmState(CHANNEL_TOO_BRIGHT_ALARM, OnOffType.ON);
 682                 } else if ("false".equals(dataValue)) {
 683                     ipCameraHandler.changeAlarmState(CHANNEL_TOO_BRIGHT_ALARM, OnOffType.OFF);
 684                 }
 685                 break;
 686             case "VideoSource/ImageTooBlurry/AnalyticsService":
 687             case "VideoSource/ImageTooBlurry/ImagingService":
 688             case "VideoSource/ImageTooBlurry/RecordingService":
 689                 if ("true".equals(dataValue)) {
 690                     ipCameraHandler.changeAlarmState(CHANNEL_TOO_BLURRY_ALARM, OnOffType.ON);
 691                 } else if ("false".equals(dataValue)) {
 692                     ipCameraHandler.changeAlarmState(CHANNEL_TOO_BLURRY_ALARM, OnOffType.OFF);
 693                 }
 694                 break;
 695             default:
 696         }
 697         sendOnvifRequest(requestBuilder(RequestType.Renew, subscriptionXAddr));
 698     }
 699
 700     public boolean supportsPTZ() {
 701         return ptzDevice;
 702     }
 703
 704     public void getStatus() {
 705         if (ptzDevice) {
 706             sendPTZRequest(RequestType.GetStatus);
 707         }
 708     }
 709
 710     public Float getAbsolutePan() {
 711         return currentPanPercentage;
 712     }
 713
 714     public Float getAbsoluteTilt() {
 715         return currentTiltPercentage;
 716     }
 717
 718     public Float getAbsoluteZoom() {
 719         return currentZoomPercentage;
 720     }
 721
 722     public void setAbsolutePan(Float panValue) {// Value is 0-100% of cameras range
 723         if (ptzDevice) {
 724             currentPanPercentage = panValue;
 725             currentPanCamValue = ((((panRangeMin - panRangeMax) * -1) / 100) * panValue + panRangeMin);
 726         }
 727     }
 728
 729     public void setAbsoluteTilt(Float tiltValue) {// Value is 0-100% of cameras range
 730         if (ptzDevice) {
 731             currentTiltPercentage = tiltValue;
 732             currentTiltCamValue = ((((panRangeMin - panRangeMax) * -1) / 100) * tiltValue + tiltRangeMin);
 733         }
 734     }
 735
 736     public void setAbsoluteZoom(Float zoomValue) {// Value is 0-100% of cameras range
 737         if (ptzDevice) {
 738             currentZoomPercentage = zoomValue;
 739             currentZoomCamValue = ((((zoomMin - zoomMax) * -1) / 100) * zoomValue + zoomMin);
 740         }
 741     }
 742
 743     public void absoluteMove() { // Camera wont move until PTZ values are set, then call this.
 744         if (ptzDevice) {
 745             sendPTZRequest(RequestType.AbsoluteMove);
 746         }
 747     }
 748
 749     public void setSelectedMediaProfile(int mediaProfileIndex) {
 750         this.mediaProfileIndex = mediaProfileIndex;
 751     }
 752
 753     List<String> listOfResults(String message, String heading, String key) {
 754         List<String> results = new LinkedList<>();
 755         String temp = "";
 756         for (int startLookingFromIndex = 0; startLookingFromIndex != -1;) {
 757             startLookingFromIndex = message.indexOf(heading, startLookingFromIndex);
 758             if (startLookingFromIndex >= 0) {
 759                 temp = Helper.fetchXML(message.substring(startLookingFromIndex), heading, key);
 760                 if (!temp.isEmpty()) {
 761                     logger.trace("String was found:{}", temp);
 762                     results.add(temp);
 763                 } else {
 764                     return results;// key string must not exist so stop looking.
 765                 }
 766                 startLookingFromIndex += temp.length();
 767             }
 768         }
 769         return results;
 770     }
 771
 772     void parsePresets(String message) {
 773         List<StateOption> presets = new ArrayList<>();
 774         int counter = 1;// Presets start at 1 not 0. HOME may be added to index 0.
 775         presetTokens = listOfResults(message, "<tptz:Preset", "token=\"");
 776         presetNames = listOfResults(message, "<tptz:Preset", "<tt:Name>");
 777         if (presetTokens.size() != presetNames.size()) {
 778             logger.warn("Camera did not report the same number of Tokens and Names for PTZ presets");
 779             return;
 780         }
 781         for (String value : presetNames) {
 782             presets.add(new StateOption(Integer.toString(counter++), value));
 783         }
 784         ipCameraHandler.stateDescriptionProvider
 785                 .setStateOptions(new ChannelUID(ipCameraHandler.getThing().getUID(), CHANNEL_GOTO_PRESET), presets);
 786     }
 787
 788     void parseProfiles(String message) {
 789         mediaProfileTokens = listOfResults(message, "<trt:Profiles", "token=\"");
 790         if (mediaProfileIndex >= mediaProfileTokens.size()) {
 791             logger.warn(
 792                     "You have set the media profile to {} when the camera reported {} profiles. Falling back to mainstream 0.",
 793                     mediaProfileIndex, mediaProfileTokens.size());
 794             mediaProfileIndex = 0;
 795         }
 796     }
 797
 798     void processPTZLocation(String result) {
 799         logger.debug("Processing new PTZ location now");
 800
 801         int beginIndex = result.indexOf("x=\"");
 802         int endIndex = result.indexOf("\"", (beginIndex + 3));
 803         if (beginIndex >= 0 && endIndex >= 0) {
 804             currentPanCamValue = Float.parseFloat(result.substring(beginIndex + 3, endIndex));
 805             currentPanPercentage = (((panRangeMin - currentPanCamValue) * -1) / ((panRangeMin - panRangeMax) * -1))
 806                     * 100;
 807             logger.debug("Pan is updating to:{} and the cam value is {}", Math.round(currentPanPercentage),
 808                     currentPanCamValue);
 809         } else {
 810             logger.warn(
 811                     "Binding could not determin the cameras current PTZ location. Not all cameras respond to GetStatus requests.");
 812             return;
 813         }
 814
 815         beginIndex = result.indexOf("y=\"");
 816         endIndex = result.indexOf("\"", (beginIndex + 3));
 817         if (beginIndex >= 0 && endIndex >= 0) {
 818             currentTiltCamValue = Float.parseFloat(result.substring(beginIndex + 3, endIndex));
 819             currentTiltPercentage = (((tiltRangeMin - currentTiltCamValue) * -1) / ((tiltRangeMin - tiltRangeMax) * -1))
 820                     * 100;
 821             logger.debug("Tilt is updating to:{} and the cam value is {}", Math.round(currentTiltPercentage),
 822                     currentTiltCamValue);
 823         } else {
 824             return;
 825         }
 826
 827         beginIndex = result.lastIndexOf("x=\"");
 828         endIndex = result.indexOf("\"", (beginIndex + 3));
 829         if (beginIndex >= 0 && endIndex >= 0) {
 830             currentZoomCamValue = Float.parseFloat(result.substring(beginIndex + 3, endIndex));
 831             currentZoomPercentage = (((zoomMin - currentZoomCamValue) * -1) / ((zoomMin - zoomMax) * -1)) * 100;
 832             logger.debug("Zoom is updating to:{} and the cam value is {}", Math.round(currentZoomPercentage),
 833                     currentZoomCamValue);
 834         } else {
 835             return;
 836         }
 837     }
 838
 839     public void sendPTZRequest(RequestType requestType) {
 840         if (!isConnected) {
 841             logger.debug("ONVIF was not connected when a PTZ request was made, connecting now");
 842             connect(usingEvents);
 843         }
 844         sendOnvifRequest(requestBuilder(requestType, ptzXAddr));
 845     }
 846
 847     public void sendEventRequest(RequestType requestType) {
 848         sendOnvifRequest(requestBuilder(requestType, eventXAddr));
 849     }
 850
 851     public void connect(boolean useEvents) {
 852         connecting.lock();
 853         try {
 854             if (!isConnected) {
 855                 logger.debug("Connecting {} to ONVIF", ipAddress);
 856                 threadPool = Executors.newScheduledThreadPool(2);
 857                 sendOnvifRequest(requestBuilder(RequestType.GetSystemDateAndTime, deviceXAddr));
 858                 usingEvents = useEvents;
 859             }
 860         } finally {
 861             connecting.unlock();
 862         }
 863     }
 864
 865     public boolean isConnected() {
 866         connecting.lock();
 867         try {
 868             return isConnected;
 869         } finally {
 870             connecting.unlock();
 871         }
 872     }
 873
 874     private void cleanup() {
 875         if (!isConnected && !mainEventLoopGroup.isShuttingDown()) {
 876             try {
 877                 mainEventLoopGroup.shutdownGracefully();
 878                 mainEventLoopGroup.awaitTermination(3, TimeUnit.SECONDS);
 879             } catch (InterruptedException e) {
 880                 logger.warn("ONVIF was not cleanly shutdown, due to being interrupted");
 881             } finally {
 882                 logger.debug("Eventloop is shutdown:{}", mainEventLoopGroup.isShutdown());
 883                 bootstrap = null;
 884                 threadPool.shutdown();
 885             }
 886         }
 887     }
 888
 889     public void disconnect() {
 890         connecting.lock();// Lock out multiple disconnect()/connect() attempts as we try to send Unsubscribe.
 891         try {
 892             isConnected = false;// isConnected is not thread safe, connecting.lock() used as fix.
 893             if (bootstrap != null) {
 894                 if (usingEvents && !mainEventLoopGroup.isShuttingDown()) {
 895                     // Some cameras may continue to send events even when they can't reach a server.
 896                     sendOnvifRequest(requestBuilder(RequestType.Unsubscribe, subscriptionXAddr));
 897                 }
 898                 // give time for the Unsubscribe request to be sent, shutdownGracefully will try to send it first.
 899                 threadPool.schedule(this::cleanup, 50, TimeUnit.MILLISECONDS);
 900             } else {
 901                 cleanup();
 902             }
 903         } finally {
 904             connecting.unlock();
 905         }
 906     }
 907 }