table of contents
| dnsjit.input.zmmpcap(3) | Library Functions Manual | dnsjit.input.zmmpcap(3) |
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
BUGS¶
For issues and feature requests please use:
For question and help please use:
admin@dns-oarc.net
| 1.4.0 | dnsjit |