PacketLens
Professional network packet analysis tool with real-time capture, protocol decoding, and advanced filtering

Project Overview
PacketLens is a professional-grade network packet analyzer built with Java and JavaFX, offering real-time packet capture and deep protocol analysis. Leveraging Pcap4J library for low-level packet capture, it provides detailed protocol decoding for TCP/IP, UDP, HTTP, DNS, and more. The intuitive JavaFX interface displays packets in real-time with color-coded protocol identification, hexadecimal dumps, and powerful filtering capabilities similar to Wireshark.
Technologies Used
Java
Core application logic and packet processing
JavaFX
Modern UI framework for rich desktop interface
Pcap4J
Native packet capture library wrapper
Network Programming
TCP/IP stack and protocol analysis
Multithreading
Concurrent packet capture and UI updates
Maven
Build automation and dependency management
Key Features
Development Process
UI Design
Designed JavaFX interface with packet list and detail panels
Capture Engine
Integrated Pcap4J for multi-interface packet capture
Protocol Decoders
Implemented parsers for common network protocols
Filtering System
Added BPF filter support and real-time filtering
Visualization
Created charts and statistics for network traffic
Performance Optimization
Optimized for high-speed packet processing
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