is there have UDP in publisher?

[cuihe]

I see four protocols on the publisher page: BACnet、HTTP、Modbus、Twilio

I want to use UDP to send data out.
I think he should be in the HTTP protocol option.
But I can't find it. It seems Only TCP in there.

Is there a way to send data using UDP protocol?

[Jared Wiltshire]

@cuihe said in is there have UDP in publisher?:

I want to use UDP to send data out.

Why? Presumably there is a service that you are trying to interact with? We need more information than just 'UDP'.

[phildunlap]

Hi cuihe,

You would be able to instantiate a java.net.DatagramSocket in a script, for the most general ability to use UDP. But with details of why may come a better answer, as Jared suggests.

[cuihe]

@jared-wiltshire @phildunlap thank you for reply!
I know that mango provides a completely superior function to UDP.
But the reality is that an old system only accepts control signals in the form of UDP, and queries its database to determine whether the control effect has been achieved.

my old system use these code(c#), if you need to skip:

//your code here
private void opendoor(string DoorNumber)
        {
            string strDestinationIP = System.Configuration.ConfigurationSettings.AppSettings["DoorContoler"];
            string strMessage = string.Empty;
            if (DoorNumber.Equals("MainDoor"))
                strMessage = System.Configuration.ConfigurationSettings.AppSettings["MainDoorOpen"];           
            if (strMessage.Equals(string.Empty)) return;
            UdpClient udpClient = new UdpClient();
            IPAddress destinationIP = IPAddress.Parse(strDestinationIP);
            IPEndPoint destination = new IPEndPoint(destinationIP, 18001);
            byte[] message = HexStringToByteArray(strMessage);
            udpClient.Send(message, message.Length, destination);
            udpClient.Close();
        }

[Jared Wiltshire]

OK got you. Here's a meta data source you can import and use, you will have to change the dataPointXid of the context point to an actual point in your system. Script formatted below -

{
  "dataSources":[
    {
      "xid":"DS_464401cf-d4f5-42e4-abb3-5cf0e7b43c99",
      "name":"UDP test",
      "enabled":true,
      "type":"META",
      "alarmLevels":{
        "SCRIPT_ERROR":"URGENT",
        "CONTEXT_POINT_DISABLED":"URGENT",
        "RESULT_TYPE_ERROR":"URGENT"
      },
      "purgeType":"YEARS",
      "editPermission":"",
      "purgeOverride":false,
      "purgePeriod":1
    }
  ],
  "dataPoints":[
    {
      "xid":"DP_02608a5a-1785-41b5-bc57-231b6823d810",
      "name":"UDP string sender",
      "enabled":true,
      "loggingType":"ON_CHANGE",
      "intervalLoggingPeriodType":"MINUTES",
      "intervalLoggingType":"INSTANT",
      "purgeType":"YEARS",
      "pointLocator":{
        "dataType":"ALPHANUMERIC",
        "updateEvent":"NONE",
        "contextUpdateEvent":"CONTEXT_UPDATE",
        "context":[
          {
            "varName":"input",
            "dataPointXid":"DP_d7f134b2-3940-4cc1-b9b3-2cf153342078",
            "updateContext":true
          }
        ],
        "logLevel":"NONE",
        "variableName":"point",
        "scriptPermissions":"superadmin",
        "executionDelaySeconds":0,
        "logCount":5,
        "logSize":1.0,
        "script":"var value = input.value;\nif (value == null) {\n    return value;\n}\n\nvar socket = new java.net.DatagramSocket();\ntry {\n    var address = java.net.InetAddress.getByName(\"10.55.55.10\");\n    var port = 1241;\n    \n    var valueBytes = value.getBytes(java.nio.charset.StandardCharsets.UTF_8);\n    var packet = new java.net.DatagramPacket(valueBytes, valueBytes.length, address, port);\n    \n    socket.send(packet);\n} finally {\n    socket.close();\n}\n\nreturn value;",
        "settable":false,
        "updateCronPattern":""
      },
      "eventDetectors":[
      ],
      "plotType":"STEP",
      "rollup":"NONE",
      "unit":"",
      "simplifyType":"NONE",
      "chartColour":"",
      "chartRenderer":{
        "type":"TABLE",
        "limit":10
      },
      "dataSourceXid":"DS_464401cf-d4f5-42e4-abb3-5cf0e7b43c99",
      "defaultCacheSize":1,
      "deviceName":"UDP sender",
      "discardExtremeValues":false,
      "discardHighLimit":1.7976931348623157E308,
      "discardLowLimit":-1.7976931348623157E308,
      "intervalLoggingPeriod":1,
      "intervalLoggingSampleWindowSize":0,
      "overrideIntervalLoggingSamples":false,
      "preventSetExtremeValues":false,
      "purgeOverride":false,
      "purgePeriod":1,
      "readPermission":"",
      "setExtremeHighLimit":1.7976931348623157E308,
      "setExtremeLowLimit":-1.7976931348623157E308,
      "setPermission":"",
      "tags":{
      },
      "textRenderer":{
        "type":"PLAIN",
        "useUnitAsSuffix":false,
        "suffix":""
      },
      "tolerance":0.0
    }
  ]
}

Actual script

var value = input.value;
if (value == null) {
    return value;
}

var socket = new java.net.DatagramSocket();
try {
    var address = java.net.InetAddress.getByName("10.55.55.10");
    var port = 1241;
    
    var valueBytes = value.getBytes(java.nio.charset.StandardCharsets.UTF_8);
    var packet = new java.net.DatagramPacket(valueBytes, valueBytes.length, address, port);
    
    socket.send(packet);
} finally {
    socket.close();
}

return value;

[cuihe]

I think I understand. Thank you very much!