Folder reorganize 1

trends/live/websocket_server.php

@@ -0,0 +1,78 @@
+<?php
+require_once 'vendor/autoload.php'; // Install ReactPHP via Composer
+
+use React\Socket\Server;
+use React\Http\Server as HttpServer;
+use React\Stream\WritableResourceStream;
+
+$loop = React\EventLoop\Loop::get();
+
+// Database connection
+$pdo = new PDO("mysql:host=192.168.0.13;dbname=history", "opce", "opcelasuca");
+
+// WebSocket connections
+$connections = [];
+
+// Create WebSocket server
+$server = new HttpServer($loop, function ($request) use (&$connections, $pdo) {
+    // Handle WebSocket upgrade
+    if ($request->getHeaderLine('Upgrade') === 'websocket') {
+        $connection = new WebSocketConnection();
+        $connections[] = $connection;
+        
+        // Send initial data
+        $connection->send(json_encode([
+            'type' => 'welcome',
+            'message' => 'Connected to real-time data stream'
+        ]));
+        
+        return $connection;
+    }
+    
+    return new React\Http\Response(404, [], 'WebSocket endpoint only');
+});
+
+// Periodic data broadcast
+$loop->addPeriodicTimer(1.0, function() use (&$connections, $pdo) {
+    if (empty($connections)) return;
+    
+    try {
+        // Get latest data for all active tags
+        $stmt = $pdo->prepare("
+            SELECT h.TimeStamp, h.Value, n.name 
+            FROM historicaldata h 
+            LEFT JOIN id_names n ON h.ID = n.idnumber 
+            WHERE h.TimeStamp >= NOW() - INTERVAL 5 SECOND
+            ORDER BY h.TimeStamp DESC
+        ");
+        $stmt->execute();
+        $data = $stmt->fetchAll(PDO::FETCH_ASSOC);
+        
+        if (!empty($data)) {
+            $message = json_encode([
+                'type' => 'data_update',
+                'timestamp' => date('c'),
+                'data' => $data
+            ]);
+            
+            // Broadcast to all connections
+            foreach ($connections as $key => $connection) {
+                if ($connection->isConnected()) {
+                    $connection->send($message);
+                } else {
+                    unset($connections[$key]);
+                }
+            }
+        }
+        
+    } catch (Exception $e) {
+        error_log("WebSocket error: " . $e->getMessage());
+    }
+});
+
+$socket = new Server('0.0.0.0:8080', $loop);
+$server->listen($socket);
+
+echo "WebSocket server running on port 8080\n";
+$loop->run();
+?>