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C# Packet Capture Analyser

Analysis in C# of packets captured from network using libpcap/WinPcap

As of 2015-02-17, this project may now be found at https://github.com/michael-mayes/capturedpackets.

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Developed under Microsoft Visual Studio 2010/12/13 and .Net Framework 4.0/4.5 for Windows XP and later, but also successfully demonstrated under Mono for Linux.
The application can fully process a wide selection of PCAP NG, PCAP and NA Sniffer packet captures and can fully unpack a range of frames, packets and datagrams therein, but the unpacked data is not utilised in the configured version of the code.
Without additional knowledge of the structure of the messages, the application cannot handle multiple messages within a TCP packet.
The code can perform latency analysis for packet round trips across a network and analysis for time messages on a network, but you must add in RegisterMessageReceipt and RegisterTimeMessageReceipt calls, respectively, into specific message handling to utilise this functionality.
Histograms can be output for the latency and time analysis results

C# Packet Capture Analyser Web Site


  • Parses PCAP Next Generation packet captures (version 1.0)
  • Parses PCAP packet captures (version 2.4)
  • Parses NA Sniffer packet captures (version 4.0)
  • Can perform latency analysis for packet roundtrips across a network
  • Can perform analysis of consistency of time messages across a network
  • Can perform analysis of bursting of messages across a network
  • Outputs histograms for latency, time and burst analysis results
  • Extracts IEEE 802.3 Ethernet frames
  • Extracts Ethernet II frames
  • Extracts ARP packets
  • Extracts TCP packets
  • Extracts UDP datagrams
  • Extracts ICMPv4 packets
  • Extracts IGMPv2 packets
  • Extracts Configuration Test Protocol (Loopback) packets
  • Extracts LLDP packets
  • Handles spuriously exposed trailer bytes in packet capture


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