fix(smartproxy): upgrade @push.rocks/smartproxy to ^23.1.0 and adapt code/tests for its async getStatistics() API

test/suite/smtpclient_error-handling/test.cerr-03.network-failures.ts

@@ -197,65 +197,55 @@ tap.test('CERR-03: Network Failures - should handle EHOSTUNREACH', async () => {
 });
 
 tap.test('CERR-03: Network Failures - should handle packet loss simulation', async () => {
-  // Create a server that randomly drops data
-  let packetCount = 0;
+  // Create a server that sends a greeting but never responds to commands,
+  // simulating complete packet loss after the initial connection.
   const lossyServer = net.createServer((socket) => {
+    socket.on('error', () => {});
     socket.write('220 Lossy server ready\r\n');
-    
-    socket.on('data', (data) => {
-      packetCount++;
-      
-      // Simulate 30% packet loss
-      if (Math.random() > 0.3) {
-        const command = data.toString().trim();
-        if (command.startsWith('EHLO')) {
-          socket.write('250 OK\r\n');
-        } else if (command === 'QUIT') {
-          socket.write('221 Bye\r\n');
-          socket.end();
-        }
-      }
-      // Otherwise, don't respond (simulate packet loss)
+
+    // Never respond to any commands - simulates total packet loss
+    socket.on('data', () => {
+      // Intentionally drop all data to simulate packet loss
     });
   });
-  
+
   await new Promise<void>((resolve) => {
     lossyServer.listen(2558, () => resolve());
   });
-  
+
   const client = createSmtpClient({
     host: 'localhost',
     port: 2558,
     secure: false,
-    connectionTimeout: 1000,
-    socketTimeout: 1000 // Short timeout to detect loss
+    connectionTimeout: 2000,
+    socketTimeout: 2000 // Short timeout to detect loss
   });
-  
+
   let verifyResult = false;
   let errorOccurred = false;
-  
+
   try {
     verifyResult = await client.verify();
     if (verifyResult) {
-      console.log('✅ Connected despite simulated packet loss');
+      console.log('Connection succeeded unexpectedly');
     } else {
       console.log('✅ Connection failed due to packet loss');
     }
   } catch (error) {
     errorOccurred = true;
-    console.log(`✅ Packet loss detected after ${packetCount} packets: ${error.message}`);
+    console.log(`✅ Packet loss detected: ${error.message}`);
   }
-  
-  // Either verification failed or an error occurred - both are expected with packet loss
+
+  // verify() must have returned false or thrown - both indicate packet loss was detected
   expect(!verifyResult || errorOccurred).toBeTrue();
-  
+
   // Clean up client first
   try {
     await client.close();
   } catch (closeError) {
     // Ignore close errors in this test
   }
-  
+
   // Then close server
   await new Promise<void>((resolve) => {
     lossyServer.close(() => resolve());