优化国标规范，参考国标文档中-点播外域设备媒体流SSRC处理方式，上级点播时自定义ssrc，不适用上级携带的ssrc，也避免上级兼容性差，不携带ssrc的问题，可通过配置关闭此特性

src/main/java/com/genersoft/iot/vmp/conf/UserSetting.java

@@ -53,6 +53,7 @@ public class UserSetting {
     private Boolean refuseChannelStatusChannelFormNotify = Boolean.FALSE;
 
     private Boolean deviceStatusNotify = Boolean.FALSE;
+    private Boolean useCustomSsrcForParentInvite = Boolean.TRUE;
 
     private String serverId = "000000";
 
@@ -277,4 +278,12 @@ public class UserSetting {
     public void setDeviceStatusNotify(Boolean deviceStatusNotify) {
         this.deviceStatusNotify = deviceStatusNotify;
     }
+
+    public Boolean getUseCustomSsrcForParentInvite() {
+        return useCustomSsrcForParentInvite;
+    }
+
+    public void setUseCustomSsrcForParentInvite(Boolean useCustomSsrcForParentInvite) {
+        this.useCustomSsrcForParentInvite = useCustomSsrcForParentInvite;
+    }
 }

src/main/java/com/genersoft/iot/vmp/gb28181/task/SipRunner.java

@@ -5,6 +5,7 @@ import com.genersoft.iot.vmp.conf.UserSetting;
 import com.genersoft.iot.vmp.gb28181.bean.Device;
 import com.genersoft.iot.vmp.gb28181.bean.ParentPlatform;
 import com.genersoft.iot.vmp.gb28181.bean.SendRtpItem;
+import com.genersoft.iot.vmp.gb28181.session.SSRCFactory;
 import com.genersoft.iot.vmp.gb28181.transmit.cmd.ISIPCommanderForPlatform;
 import com.genersoft.iot.vmp.media.zlm.ZLMRESTfulUtils;
 import com.genersoft.iot.vmp.media.zlm.dto.MediaServerItem;
@@ -37,6 +38,9 @@ public class SipRunner implements CommandLineRunner {
     @Autowired
     private IRedisCatchStorage redisCatchStorage;
 
+    @Autowired
+    private SSRCFactory ssrcFactory;
+
     @Autowired
     private UserSetting userSetting;
 
@@ -96,6 +100,7 @@ public class SipRunner implements CommandLineRunner {
                 MediaServerItem mediaServerItem = mediaServerService.getOne(sendRtpItem.getMediaServerId());
                 redisCatchStorage.deleteSendRTPServer(sendRtpItem.getPlatformId(),sendRtpItem.getChannelId(), sendRtpItem.getCallId(),sendRtpItem.getStreamId());
                 if (mediaServerItem != null) {
+                    ssrcFactory.releaseSsrc(sendRtpItem.getMediaServerId(), sendRtpItem.getSsrc());
                     Map<String, Object> param = new HashMap<>();
                     param.put("vhost","__defaultVhost__");
                     param.put("app",sendRtpItem.getApp());

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/ByeRequestProcessor.java

@@ -6,6 +6,7 @@ import com.genersoft.iot.vmp.gb28181.bean.Device;
 import com.genersoft.iot.vmp.gb28181.bean.InviteStreamType;
 import com.genersoft.iot.vmp.gb28181.bean.SendRtpItem;
 import com.genersoft.iot.vmp.gb28181.bean.SsrcTransaction;
+import com.genersoft.iot.vmp.gb28181.session.SSRCFactory;
 import com.genersoft.iot.vmp.gb28181.session.VideoStreamSessionManager;
 import com.genersoft.iot.vmp.gb28181.transmit.SIPProcessorObserver;
 import com.genersoft.iot.vmp.gb28181.transmit.cmd.ISIPCommander;
@@ -60,6 +61,9 @@ public class ByeRequestProcessor extends SIPRequestProcessorParent implements In
 	@Autowired
 	private ZLMRTPServerFactory zlmrtpServerFactory;
 
+	@Autowired
+	private SSRCFactory ssrcFactory;
+
 	@Autowired
 	private IMediaServerService mediaServerService;
 
@@ -102,6 +106,7 @@ public class ByeRequestProcessor extends SIPRequestProcessorParent implements In
 				logger.info("[收到bye] 停止向上级推流：{}", streamId);
 				MediaServerItem mediaInfo = mediaServerService.getOne(sendRtpItem.getMediaServerId());
 				redisCatchStorage.deleteSendRTPServer(platformGbId, channelId, callIdHeader.getCallId(), null);
+				ssrcFactory.releaseSsrc(sendRtpItem.getMediaServerId(), sendRtpItem.getSsrc());
 				zlmrtpServerFactory.stopSendRtpStream(mediaInfo, param);
 				int totalReaderCount = zlmrtpServerFactory.totalReaderCount(mediaInfo, sendRtpItem.getApp(), streamId);
 				if (totalReaderCount <= 0) {

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/InviteRequestProcessor.java

@@ -245,18 +245,15 @@ public class InviteRequestProcessor extends SIPRequestProcessorParent implements
                 String contentString = new String(request.getRawContent());
 
                 // jainSip不支持y=字段， 移除以解析。
-                int ssrcIndex = contentString.indexOf("y=");
                 // 检查是否有y字段
-                String ssrcDefault = "0000000000";
-                String ssrc;
+                int ssrcIndex = contentString.indexOf("y=");
+
                 SessionDescription sdp;
                 if (ssrcIndex >= 0) {
                     //ssrc规定长度为10个字节，不取余下长度以避免后续还有“f=”字段
-                    ssrc = contentString.substring(ssrcIndex + 2, ssrcIndex + 12);
-                    String substring = contentString.substring(0, contentString.indexOf("y="));
+                    String substring = contentString.substring(0, ssrcIndex);
                     sdp = SdpFactory.getInstance().createSessionDescription(substring);
                 } else {
-                    ssrc = ssrcDefault;
                     sdp = SdpFactory.getInstance().createSessionDescription(contentString);
                 }
                 String sessionName = sdp.getSessionName().getValue();
@@ -320,7 +317,7 @@ public class InviteRequestProcessor extends SIPRequestProcessorParent implements
                 String username = sdp.getOrigin().getUsername();
                 String addressStr = sdp.getConnection().getAddress();
 
-                logger.info("[上级点播]用户：{}， 通道：{}, 地址：{}:{}， ssrc：{}", username, channelId, addressStr, port, ssrc);
+
                 Device device = null;
                 // 通过 channel 和 gbStream 是否为null 值判断来源是直播流合适国标
                 if (channel != null) {
@@ -344,6 +341,15 @@ public class InviteRequestProcessor extends SIPRequestProcessorParent implements
                         }
                         return;
                     }
+
+                    String ssrc;
+                    if (userSetting.getUseCustomSsrcForParentInvite() || ssrcIndex < 0) {
+                        // 上级平台点播时不使用上级平台指定的ssrc，使用自定义的ssrc，参考国标文档-点播外域设备媒体流SSRC处理方式
+                        ssrc = "Play".equalsIgnoreCase(sessionName) ? ssrcFactory.getPlaySsrc(mediaServerItem.getId()) : ssrcFactory.getPlayBackSsrc(mediaServerItem.getId());
+                    }else {
+                        ssrc = contentString.substring(ssrcIndex + 2, ssrcIndex + 12);
+                    }
+                    logger.info("[上级点播] 用户：{}， 通道：{}, 地址：{}:{}， ssrc：{}", username, channelId, addressStr, port, ssrc);
                     SendRtpItem sendRtpItem = zlmrtpServerFactory.createSendRtpItem(mediaServerItem, addressStr, port, ssrc, requesterId,
                             device.getDeviceId(), channelId, mediaTransmissionTCP, platform.isRtcp());
 
@@ -465,29 +471,23 @@ public class InviteRequestProcessor extends SIPRequestProcessorParent implements
                             }
                         }
                         if (playTransaction == null) {
+                            // 被点播的通道目前未被点播，则开始点播
                             String streamId = null;
                             if (mediaServerItem.isRtpEnable()) {
                                 streamId = String.format("%s_%s", device.getDeviceId(), channelId);
                             }
-                            SSRCInfo ssrcInfo = mediaServerService.openRTPServer(mediaServerItem, streamId, null, device.isSsrcCheck(), false, 0, false, device.getStreamModeForParam());
+                            SSRCInfo ssrcInfo = mediaServerService.openRTPServer(mediaServerItem, streamId, ssrc, device.isSsrcCheck(), false, 0, false, device.getStreamModeForParam());
                             logger.info(JSONObject.toJSONString(ssrcInfo));
                             sendRtpItem.setStreamId(ssrcInfo.getStream());
-                            sendRtpItem.setSsrc(ssrc.equals(ssrcDefault) ? ssrcInfo.getSsrc() : ssrc);
+//                            sendRtpItem.setSsrc(ssrcInfo.getSsrc());
 
                             // 写入redis， 超时时回复
                             redisCatchStorage.updateSendRTPSever(sendRtpItem);
-                            MediaServerItem finalMediaServerItem = mediaServerItem;
                             playService.play(mediaServerItem, ssrcInfo, device, channelId, hookEvent, errorEvent, (code, msg) -> {
                                 logger.info("[上级点播]超时, 用户：{}， 通道：{}", username, channelId);
                                 redisCatchStorage.deleteSendRTPServer(platform.getServerGBId(), channelId, callIdHeader.getCallId(), null);
                             });
                         } else {
-                            // 当前系统作为下级平台使用，当上级平台点播时不携带ssrc时，并且设备在当前系统中已经点播了。这个时候需要重新给生成一个ssrc，不使用默认的"0000000000"。
-                            if (ssrc.equals(ssrcDefault)) {
-                                ssrc = ssrcFactory.getPlaySsrc(mediaServerItem.getId());
-                                ssrcFactory.releaseSsrc(mediaServerItem.getId(), ssrc);
-                                sendRtpItem.setSsrc(ssrc);
-                            }
 
                             sendRtpItem.setStreamId(playTransaction.getStream());
                             // 写入redis， 超时时回复
@@ -499,11 +499,15 @@ public class InviteRequestProcessor extends SIPRequestProcessorParent implements
                         }
                     }
                 } else if (gbStream != null) {
-                    if(ssrc.equals(ssrcDefault))
-                    {
-                        ssrc = ssrcFactory.getPlaySsrc(mediaServerItem.getId());
-                        ssrcFactory.releaseSsrc(mediaServerItem.getId(), ssrc);
+
+                    String ssrc;
+                    if (userSetting.getUseCustomSsrcForParentInvite() || ssrcIndex < 0) {
+                        // 上级平台点播时不使用上级平台指定的ssrc，使用自定义的ssrc，参考国标文档-点播外域设备媒体流SSRC处理方式
+                        ssrc = "Play".equalsIgnoreCase(sessionName) ? ssrcFactory.getPlaySsrc(mediaServerItem.getId()) : ssrcFactory.getPlayBackSsrc(mediaServerItem.getId());
+                    }else {
+                        ssrc = contentString.substring(ssrcIndex + 2, ssrcIndex + 12);
                     }
+
                     if("push".equals(gbStream.getStreamType())) {
                         if (streamPushItem != null && streamPushItem.isPushIng()) {
                             // 推流状态

src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java

@@ -8,6 +8,7 @@ import com.genersoft.iot.vmp.conf.exception.SsrcTransactionNotFoundException;
 import com.genersoft.iot.vmp.gb28181.bean.*;
 import com.genersoft.iot.vmp.gb28181.event.EventPublisher;
 import com.genersoft.iot.vmp.gb28181.event.subscribe.catalog.CatalogEvent;
+import com.genersoft.iot.vmp.gb28181.session.SSRCFactory;
 import com.genersoft.iot.vmp.gb28181.session.VideoStreamSessionManager;
 import com.genersoft.iot.vmp.gb28181.transmit.callback.DeferredResultHolder;
 import com.genersoft.iot.vmp.gb28181.transmit.callback.RequestMessage;
@@ -105,6 +106,9 @@ public class ZLMHttpHookListener {
     @Autowired
     private AssistRESTfulUtils assistRESTfulUtils;
 
+    @Autowired
+    private SSRCFactory ssrcFactory;
+
     @Qualifier("taskExecutor")
     @Autowired
     private ThreadPoolTaskExecutor taskExecutor;
@@ -666,6 +670,7 @@ public class ZLMHttpHookListener {
             if (sendRtpItems.size() > 0) {
                 for (SendRtpItem sendRtpItem : sendRtpItems) {
                     ParentPlatform parentPlatform = storager.queryParentPlatByServerGBId(sendRtpItem.getPlatformId());
+                    ssrcFactory.releaseSsrc(sendRtpItem.getMediaServerId(), sendRtpItem.getSsrc());
                     try {
                         commanderFroPlatform.streamByeCmd(parentPlatform, sendRtpItem.getCallId());
                     } catch (SipException | InvalidArgumentException | ParseException e) {

src/main/java/com/genersoft/iot/vmp/service/impl/PlatformServiceImpl.java

@@ -4,6 +4,7 @@ import com.genersoft.iot.vmp.conf.DynamicTask;
 import com.genersoft.iot.vmp.conf.UserSetting;
 import com.genersoft.iot.vmp.gb28181.bean.*;
 import com.genersoft.iot.vmp.gb28181.event.SipSubscribe;
+import com.genersoft.iot.vmp.gb28181.session.SSRCFactory;
 import com.genersoft.iot.vmp.gb28181.transmit.cmd.impl.SIPCommanderFroPlatform;
 import com.genersoft.iot.vmp.media.zlm.ZLMRTPServerFactory;
 import com.genersoft.iot.vmp.media.zlm.dto.MediaServerItem;
@@ -53,6 +54,9 @@ public class PlatformServiceImpl implements IPlatformService {
     @Autowired
     private IRedisCatchStorage redisCatchStorage;
 
+    @Autowired
+    private SSRCFactory ssrcFactory;
+
     @Autowired
     private IMediaServerService mediaServerService;
 
@@ -328,6 +332,7 @@ public class PlatformServiceImpl implements IPlatformService {
         List<SendRtpItem> sendRtpItems = redisCatchStorage.querySendRTPServer(platformId);
         if (sendRtpItems != null && sendRtpItems.size() > 0) {
             for (SendRtpItem sendRtpItem : sendRtpItems) {
+                ssrcFactory.releaseSsrc(sendRtpItem.getMediaServerId(), sendRtpItem.getSsrc());
                 redisCatchStorage.deleteSendRTPServer(platformId, sendRtpItem.getChannelId(), null, null);
                 MediaServerItem mediaInfo = mediaServerService.getOne(sendRtpItem.getMediaServerId());
                 Map<String, Object> param = new HashMap<>(3);

src/main/java/com/genersoft/iot/vmp/storager/impl/RedisCatchStorageImpl.java

@@ -915,7 +915,12 @@ public class RedisCatchStorageImpl implements IRedisCatchStorage {
     @Override
     public void sendDeviceOrChannelStatus(String deviceId, String channelId, boolean online) {
         String key = VideoManagerConstants.VM_MSG_SUBSCRIBE_DEVICE_STATUS;
-        logger.info("[redis通知] 推送设备/通道状态， {}/{}-{}", deviceId, channelId, online);
+        if (channelId == null) {
+            logger.info("[redis通知] 推送设备状态， {}-{}", deviceId, online);
+        }else {
+            logger.info("[redis通知] 推送通道状态， {}/{}-{}", deviceId, channelId, online);
+        }
+
         StringBuilder msg = new StringBuilder();
         msg.append(deviceId);
         if (channelId != null) {

src/main/resources/all-application.yml

@@ -194,6 +194,8 @@ user-settings:
     max-notify-count-queue: 10000
     # 设备/通道状态变化时发送消息
     device-status-notify: false
+    # 上级平台点播时不使用上级平台指定的ssrc，使用自定义的ssrc，参考国标文档-点播外域设备媒体流SSRC处理方式
+    use-custom-ssrc-for-parent-invite: true
     # 跨域配置，配置你访问前端页面的地址即可， 可以配置多个
     allowed-origins:
         - http://localhost:8008