database presetup

IoT-sensor/modules/coap-client.js

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+const coap = require('coap');
+
+const serverUri = 'coap://localhost:5683'; 
+
+// Create a CoAP request
+const req = coap.request({
+  hostname: 'localhost', // Replace with your server's hostname
+  port: 5683,              // Replace with your server's port
+  method: 'PUT',           // Use the CoAP method you need (e.g., PUT, POST)
+  pathname: '/resource',   // Replace with your server's resource path
+});
+
+// Set the payload (data to be sent to the server)
+const payload = 'Hello, CoAP Server!'; // Replace with your data
+req.write(payload);
+
+// Event handler for the response
+req.on('response', (res) => {
+  console.log('CoAP server responded with:', res.payload.toString());
+  req.end();
+});
+
+// Send the CoAP request
+req.end();