NAME

       dnsjit.input.zmmpcap - Read input from a PCAP file using mmap()

SYNOPSIS

         local input = require("dnsjit.input.zmmpcap").new()
         input:zstd()
         input:open("file.pcap.zst")
         input:receiver(filter_or_output)
         input:run()

DESCRIPTION

       Read  input  from a PCAP file by mapping the whole file to memory using mmap() and parse the PCAP without
       libpcap.  After opening a file and reading the PCAP header, the attributes are populated.

   Attributes
       is_swapped
              Indicate if the byte order in the PCAP is in reverse order of the host.

       is_nanosec
              Indicate if the time stamps are in nanoseconds or not.

       magic_number
              Magic number.

       version_major
              Major version number.

       version_minor
              Minor version number.

       thiszone
              GMT to local correction.

       sigfigs
              Accuracy of timestamps.

       snaplen
              Max length of captured packets, in octets.

       network
              The link type found in the PCAP header, see https://www.tcpdump.org/linktypes.html .

       linktype
              The data link type, mapped from network.

   Functions
       Zmmpcap.new()
              Create a new Zmmpcap input.

       Zmmpcap:log()
              Return the Log object to control logging of this instance or module.

       Zmmpcap:receiver(o)
              Set the receiver to pass objects to.

       Zmmpcap:produce()
              Return the C functions and context for producing objects.

       Zmmpcap:lz4()
              Use liblz4 to decompress the input file/data.

       Zmmpcap:zstd()
              Use libzstd to decompress the input file/data.

       Zmmpcap:gzip()
              Use zlib/gzip to decompress the input file/data.

       Zmmpcap:lzma()
              Use liblzma/xz to decompress the input file/data.

       Zmmpcap:have_support()
              Return true if support for selected compression library is built in.

       Zmmpcap:open(file)
              Open a PCAP file for processing and read the PCAP header.  Returns 0 on success.

       Zmmpcap:run()
              Start processing packets and send each packet read to the receiver.  Returns 0 if all packets  was
              read successfully.

       Zmmpcap:packets()
              Return the number of packets seen.

AUTHORS and CONTRIBUTORS

       Jerry Lundström (DNS-OARC), Tomáš Křížek (CZ.NIC), Petr Špaček (ISC)

       Maintained by DNS-OARC

              https://www.dns-oarc.net/

BUGS

       For issues and feature requests please use:

              https://github.com/DNS-OARC/dnsjit/issues

       For question and help please use:

              admin@dns-oarc.net

dnsjit                                                1.4.0                              dnsjit.input.zmmpcap(3)