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im searching for a suggestion for read a response out of a websocket, what is generating realtime machine data.

For example, here is the javascript code, that i can open in my browser.

<!DOCTYPE html>
 <meta charset="utf-8" />
 <title>WebSocket Test</title>
 <script language="javascript" type="text/javascript">

 <!-- Fill in the correct URL from AgentDataRealTimeWebSocket (see step 3). -->
 <!-- The comma is mandatory as it is a list. -->
 var wsUri = "wss://...,/data-realtime";
 var output;

 function init()
 {
   output = document.getElementById("output");
   testWebSocket();
 }

 function testWebSocket()
 {
   websocket = new WebSocket(wsUri);
   websocket.onopen = function(evt) { onOpen(evt) };
   websocket.onclose = function(evt) { onClose(evt) };
   websocket.onmessage = function(evt) { onMessage(evt) };
   websocket.onerror = function(evt) { onError(evt) };
 }

 <!-- Enter your JWT token here. -->
 function onOpen(evt)
 {
   writeToScreen("CONNECTED");
   doSend("Authorization: Enter JWT here");
 }

 function onClose(evt)
 {
   writeToScreen("DISCONNECTED");
 }

 function onMessage(evt)
 {
   writeToScreen('<span style="color: blue;">RESPONSE: ' + evt.data+'</span>');
 }

 function onError(evt)
 {
   writeToScreen('<span style="color: red;">ERROR:</span> ' + evt.data);
 }

 function doSend(message)
 {
   writeToScreen("SENT: " + message);
   websocket.send(message);
 }

 function writeToScreen(message)
 {
   var pre = document.createElement("p");
   pre.style.wordWrap = "break-word";
   pre.innerHTML = message;
   output.appendChild(pre);
 }


 window.addEventListener("load", init, false);

 </script>

 <h2>WebSocket Test</h2>

 <div id="output"></div>

 </script>

The response of this code looks like this, and comes in every 0,5s (PLC Data):

RESPONSE: {"message": {"points": [{"float32": [35.912109375, 2.0], "int16": [5808], "str": [""], "tags": [1, 2, 3, 4], "time": 1665666946000}], "sentTime": 1665666946398}, "agent": {"publicId": "..."}, "device": {"publicId": "..."}}

Does anyone have an approach to this?

Thanks for your help!

udii
  • 9
  • 2
  • See [ask]. There're plenty of WebSocket libraries at PyPI. Choose one and write a code by yourself. If you confront a problem, post a [mre] and debugging details. – relent95 Oct 13 '22 at 15:25

0 Answers0