add example to implement autoreconnect session

Author: Mahad-10

examples/reconnect.ts

@@ -0,0 +1,55 @@
+import { connectAnonymous } from "../lib";
+
+async function sleep(ms: number): Promise<void> {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function main() {
+    let retryDelay = 1000; // 1 second
+    const maxDelay = 30000; // 30 seconds
+
+    for (; ;) {
+        try {
+            const session = await connectAnonymous("ws://localhost:8080/ws", "realm1");
+            console.log("Connected successfully");
+
+            // Reset backoff after successful connection
+            retryDelay = 1000;
+
+            // Register multiple disconnect callbacks
+            session.onDisconnect(async () => {
+                console.log("Callback 1: disconnection event.");
+            });
+
+            session.onDisconnect(async () => {
+                console.log("Callback 2: disconnection event.");
+                await sleep(500);
+            });
+
+            session.onDisconnect(async () => {
+                console.log("Callback 3: disconnection event.");
+            });
+
+            // Wait for disconnect
+            const disconnected = new Promise<void>(resolve => {
+                session.onDisconnect(async () => {
+                    console.log("Disconnected from router!");
+                    resolve();
+                });
+            });
+
+            await disconnected;
+            console.log("Retrying connection...");
+
+        } catch (err) {
+            console.error(`Failed to connect: ${err}`);
+            console.log(`Retrying in ${retryDelay / 1000}s...`);
+            await sleep(retryDelay);
+
+            // Exponential backoff
+            retryDelay = Math.min(retryDelay * 2, maxDelay);
+        }
+    }
+}
+
+main().catch(err => console.error(`Fatal error: ${err}`));