Enhance payload monitoring and analysis in protocol blocking service

lib/services/protocol_blocking_service.dart

@@ -127,8 +127,10 @@ class ProtocolBlockingService {
       _continuousMonitor!.stderr
           .transform(utf8.decoder)
           .listen((error) {
-            if (!error.contains('listening on')) {
+            if (!error.contains('listening on') && !error.contains('data link type') && !error.contains('verbose output suppressed')) {
               print('❌ tcpdump error: $error');
+            } else {
+              print('ℹ️ tcpdump info: $error');
             }
           });
 
@@ -138,17 +140,28 @@ class ProtocolBlockingService {
   }
   
   static Future<void> _processCapturedPacket(String packetLine) async {
-    // Skip timestamp/header lines, only process hex data lines
-    if (!packetLine.contains('0x') || packetLine.trim().isEmpty) {
-      return;
+    // Print all packet lines to see what we're getting
+    print('📋 RAW PACKET LINE: $packetLine');
+    
+    // Check if it's from our monitored peers first
+    bool isFromPeer = false;
+    String? peerIP;
+    
+    for (final ip in _activePeerIPs) {
+      if (packetLine.contains(ip)) {
+        isFromPeer = true;
+        peerIP = ip;
+        break;
+      }
     }
     
-    // Check if it's from our monitored peers and analyze payload
-    for (final peerIP in _activePeerIPs) {
-      if (packetLine.contains(peerIP)) {
-        print('🎯 PEER TRAFFIC FROM $peerIP - ANALYZING PAYLOAD');
+    if (isFromPeer && peerIP != null) {
+      print('🎯 PEER TRAFFIC FROM $peerIP');
+      
+      // For hex data lines, do deep payload analysis
+      if (packetLine.contains('0x')) {
+        print('🔍 HEX DATA DETECTED - ANALYZING PAYLOAD');
         await _analyzeFullPayload(packetLine, peerIP);
-        break;
       }
     }
   }