Connectivity/AdvHeartBeat

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AdvHeartBeat Protocol

AdvHeartBeat Topic & Payload

Type: Response
Direction: Agent -> Server 
Topic: /cagent/admin/<devID>/notify
QoS: 0
Retained: 0
Payload: ~ 35 character
{"hb":{"devID":"0017000E40000001"}}

Client Site

Agent needs send "AdvHeartBeat" message ( refer to AdvHeartBeat Topic & Payload ) by period as below picture.

AdvHeartBeat Protocol

Server Site

  1. Server would send "Get Capability" and "Change AdvHeartBeat sending rate" after receiving a "Connect Info" message.
  2. Server updates latest update time after receiving a AdvHeartBeat message with its AdvHeartBeat Table( NoSQL ).
  3. Server checks update time of AdvHeartBeat Table only.
  4. If the latest update time is over timeout ( Note: This value is depend on Server. Recommend: 3 x send rate => 3 x 60 = 180 sec => tolerate drop 2 AdvHeartBeat MSG ).
    1. If ( timeout & status is connected ) => changes status to disconnect & send a "Re-Connect" message to this device
  5. If there is latest AdvHeartBeat message in "AdvHeartBeat Table" but there is not device information in device list table ( SQL ).
    1. Server sends a re-connect message to this device.

Re-Connect Message

If Server aware any problem of a device's status/information. Server will send a "Re-Connect" Message to Agent. Agent will send a "Connect Info" to Server after receiving a re-connect message. You can refer below for detail.

AdvHeartBeat Protocol 

Description: Server sends "Re-Connect" message for asking agent re-send its "Connect Info".
Type: Request
Direction: Server -> Agent 
Topic: /cagent/admin/<devID>/agentcallbackreq
QoS: 0
Retained: 0
Payload:
{
   "susiCommData": {
      "commCmd": 125,
      "handlerName": "general",
      "response": {
          "statuscode": 4,
          "msg": "Reconnect"
      }
   }
}

Description: Agent will send "Connect Info" after receiving a "Re-Connect" message.
Type: Response
Direction: Agent -> Server
Topic: /cagent/admin/<devID>/agentinfoack
QoS: 2
Retained: 0
Payload:
{
  "susiCommData": {
    	"devID":"0017000E40000001",
    	"hostname":"AAA",
    	"sn":"0017000E40000001",
    	"mac":"0017000E40000001",
    	"version":"3.1.23",
    	"type":"SenHub",
    	"product":"WISE-1020",
    	"manufacture":"",
    	"status":"1",
    	"commCmd":1,
    	"requestID":30002,
    	"agentID":"0017000E40000001",
    	"handlerName":"general",
    	"sendTS":160081026
   }
}

Connect Info

Agent Client sends the "Connect Info" to Server for on-line notification. Server would send "Get Capability" to get capability of this agent device and "Change AdvHeartBeat rate" to sync with System's sending rate.

Agent Connect Info 

Description: gent Client sends the "Connect Info" to Server for on-line notification.
Type: Info
Direction: Agent -> Server
Topic: /cagent/admin/<devID>/agentinfoack
QoS: 2
Retained: 0
Payload:
{
  "susiCommData": {
    	"devID":"0017000E40000001",
    	"hostname":"AAA",
    	"sn":"0017000E40000001",
    	"mac":"0017000E40000001",
    	"version":"3.1.23",
    	"type":"SenHub",
    	"product":"WISE-1020",
    	"manufacture":"",
    	"status":"1",
    	"commCmd":1,
    	"requestID":30002,
    	"agentID":"0017000E40000001",
    	"handlerName":"general",
    	"sendTS":160081026
   }
}

Get Capability

Server will send a "Get Capability" message to Agent after receiving a "Connect Info" message.
Agent will send back below messages when receiving a "Get Capability" message.

  1. OS Info
  2. All handler's capability ( ex: HWM, KVM, HDD, IoTGW...)
  3. All SenHub's "Connect Info" message. ( Send by IoTGWHandler )
  4. Update the latest data of IoTGW ( Update by IoTGWHandler )

Get Agent's Capability 

Description: Server will send a "Get Capability" message to Agent after receiving a "Connect Info" message
Type: Request
Direction: Server -> Agent 
Topic: /cagent/admin/<agentID>/agentcallbackreq
QoS: 0
Retained: 0
Payload:
{
   "susiCommData": {
      "requestID":1001,  
      "catalogID": 4,
      "commCmd":2051,
      "handlerName":"general"
   }
}

Description: Agent will send back OS Info to Server after receiving "Get Capability" message.
Note: This feature will be implemented in version 3.2.
Type: Response
Direction: Agent -> Server
Topic: /cagent/admin/<devID>/agentactionreq
QoS: 0
Retained: 0
Payload:
{
  "susiCommData":{
      "osInfo": {
         "cagentVersion":"3.1.23",
         "cagentType":"IoTGW",
         "osVersion":"SnailOS",
         "biosVersion":"",
         "platformName":"",
         "processorName":"SnailGW",
         "osArch":"SnailX86",
         "totalPhysMemKB":123,
         "macs":"000E40ABCDEF",
         "IP":"192.168.0.100"
      },
      "commCmd":116,
      "requestID":109,
      "agentID":"0000000E40ABCDEF",
      "handlerName":"general",
      "sendTS":1466730390
   }
}

Description: Agent will send all handlers' capability to server.
Type: Response
Direction: Agent -> Server
Topic: /cagent/admin/<agentID>/agentactionreq
QoS: 0
Retained: 0
Payload: ( ex: HWM )
{
   "susiCommData": {
       "infoSpec": {
           "HWM": {
               "e": [
                   {"n": "v01","type": "volt","u": "V","max": 20,"min": 10},
                   {"n": "v02","type": "volt","u": "V","max": 20,"min": 10},
                   {"n": "t01","type": "temp","u": "Cel","max": 100,"min": 10},
                   {"n": "V143360","type": "current","u": "A","max": 100,"min": 10}
               ],
               "bn": "HWM"
           },
           "requestID": 2001,
           "commCmd": 2052,
           "catalogID": 4,
           "agentID": "000014DAE996BE04",
           "sendTS": 1417000000004,
           "handlerName": "general"
       }
   } 
 }

Description: IoTGW Handler will update latest value of IoTGW.
Type: Response
Direction: Agent -> Server
Topic: /cagent/admin/<devID>/deviceinfo
QoS: 0
Retained: 0
Payload:
{
  "susiCommData":{
    "data": {
      "IoTGW": {
         "WSN": {
           "WSN0": {
              "Info":{
                  "e":[
                       {"n":"SenHubList","sv":"0017000E40000000,0017000E40000001"},
                       {"n":"Neighbor","sv":"0017000E40000000,0017000E40000001"},
                       {"n":"Name","sv":"WSN0"},
                       {"n":"Health","v":"100.000000"},
                       {"n":"sw","sv":"1.2.1.12"},
                       {"n":"reset","bv":"0"}
                      ],
               "bn":"Info"
              },
           "bn":"0007000E40ABCDEF",
           "ver":1
          },
        "bn":"WSN"
        },
    "ver":1
   }
 },
 "commCmd":2055,
 "requestID":2001,
 "agentID":"0000000E40ABCDEF",
 "handlerName":"general",
 "sendTS":160081025
 }
}

Description: IoTGW Handler will send "Connect Info" for all "SenHub" devices.
Type: Response
Direction: Agent -> Server
Topic: /cagent/admin/<devID>/agentinfoack
QoS: 0
Retained: 0
Payload:
{
 "susiCommData": {
   	"devID":"0017000E40000001",
   	"hostname":"AAA",
   	"sn":"0017000E40000001",
   	"mac":"0017000E40000001",
   	"version":"3.1.23",
   	"type":"SenHub",
   	"product":"WISE-1020",
   	"manufacture":"",
   	"status":"1",
   	"commCmd":1,
   	"requestID":30002,
   	"agentID":"0017000E40000001",
   	"handlerName":"general",
   	"sendTS":160081026
  }
}

Parameters of "AdvHeartBeat Protocol"

Sending Rate

    Unit: second
 Default: 60 
   Range: 1 ~ 0xFFFFFFFF
         -1 => Agent doesn't send "AdvHeartBeat" message

Query parameters of "AdvHeartBeat"

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