增加了通过网络主动上报图像的支持

增加了指令维护通道的支持

SHH.NetMQ/DistributorServer.cs

@@ -35,7 +35,7 @@ namespace SHH.NetMQ
             if (payload == null) return;
 
             // 补充发送时间
-            payload.DispatchTime = DateTime.Now;
+            payload.DispatchTimestamp = DateTime.Now.Ticks;
 
             // 准备数据帧
             string jsonMeta = payload.GetMetadataJson();

SHH.NetMQ/ForwarderClient.cs

@@ -83,8 +83,8 @@ namespace SHH.NetMQ
                 var metaJson = JsonConvert.SerializeObject(new
                 {
                     payload.CameraId,
-                    payload.CaptureTime,
-                    payload.DispatchTime,
+                    payload.CaptureTimestamp,
+                    payload.DispatchTimestamp,
                     payload.OriginalWidth,
                     payload.OriginalHeight,
                     // 如果有订阅者ID列表也带上