DNS Shotgun v20240219

Incompatible changes

• CMake is now being used to build dnssim instead of Autotools
• GnuTLS 3.7.5+ is now required

Improvements

• pcap/extract-clients: always reset UDP port numbers to 53 (!56)
• pcap/extract-clients: ability to write to stdout (!62)
• pcap/filter-dnsq: skip 'special' queries for *.dotnxdomain.net (!58)
• pcap/split-clients: new tool to split larger PCAPs into smaller ones (!61)
• pcap/merge-chunks: allow disabling randomization (!67)
• tools/plot-latency: ability to diversify lines with linestyles (!69)
• tools/plot-response-rate: estimate worst-case drop caused by discarded packets (!74)
• tools/plot-packet-rate: handle incomplete last sampling period (!71)
• tools/plot-response-rate: ability to ignore RCODEs with small response rate (!73)
• pcap/filter-dnsq: ability to log malformed queries (!72)
• pcap/generate-const-qps: new tool to generate constant QPS (!33)
• tools: allow customizing plot charts with SHOTGUN_MPLSTYLES (!65)
• replay: --preload argument, mainly for dnssim debugging with sanitizers (!76)
• tools/plot-latency: use fractional values for humans in charts (!78)
• pcap/extract-clients: warn if some input packets were skipped (!80)
• dnssim: replace Autotools with CMake (!77, !86)
• configs: DoH configs with exclusively GET/POST methods (!82)
• tools/plot-response-rate: avoid division by zero (!89)
• tools/plot-latency: denser labels to improve logarithmic scale readability (!90)
• pcap/extract-clients: allow query rewriting - anonymization (!91)
• Support for DNS-over-QUIC 🎉 (!75)

Bugfixes

• tools/plot-response-rate: avoid white lines on white background (!55)
• tools/plot-client-distribution: properly handle file limit (!59)
• pcap: proper PCAP write error handling (!60)
• tools/plot-connections: set axis limits properly (!66)
• tools/plot-packet-rate: trim chart whitespace (!79)
• replay: do not exit silently when dnssim returns non-zero (!87)

DNS Shotgun v20210714

Incompatible changes

• dnsjit 1.2.0+ is now required
• dnssim component was moved from dnsjit to this repository and has to be compiled separately (!52)

Improvements

• replay: new option stop_after_s added to input (!40)
• tools/plot-packat-rate: new tool to plot packet rate in PCAPs (!46)
• replay/shotgun: support reading PCAP from stdin (!36)
• pcap/merge-chunks: utility to merge chunks on-the-fly (!37)
• tools/plot-response-rate: add --rcodes-above-pct option (!43)
• tools/plot-response-rate: add --skip-total option (!47)
• tools/plot-response-rate: add --sum-rcodes option (!47)
• tools/plot-latency: add --group option to plot aggregate data (!53)
• pcap/cut-pcap: new script to effetively trim a sorted PCAP (!50)
• configs: plot response rate chart with non-zero rcodes by default (!44)
• pcap/extract-clients: add --seed option for deterministic splitting (!34)
• pcap/filter-dnsq: improved malformed packet handling (!31)
• pcap/extract-clients: detect non-monotonic timestamps (!31)
• replay/shotgun: use faster mmpcap (!36)
• tools/plot-response-rate: add markers for plotting rcodes (!41)
• tools/plot-response-rate: improve color selection (!41, !42)

Bugfixes

• pcap/extract-clients: fix imprecise timestamps and off-by-one error (!32)
• tools/plot-client-distribution: fix handling of empty query count intervals (!38)
• replay: add workaround to support /32 and /128 addresses (!39)

2021-02-03

• new user interface
  • replay.py is now the main tool instead of shotgun.lua
  • new configuration format to support complex scenarios
  • mixed-protocol traffic replay is supported
  • some scripts in tools/ were renamed
• fast scripts for processing PCAP data
  • can be found in pcap/
  • these replaced the now removed pellet.py and scale.py
• added IPv4 support
• DoH is now fully supported
• comprehensive usage documentation is available at https://dns-shotgun.readthedocs.io
• minimum required dnsjit version is 1.1.0