---
name: "dnsjit.output.pcap"
section: "3"
platform: "linux"
package: "dnsjit"
version: "1.5.0-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/dnsjit.output.pcap"
---

# dnsjit.output.pcap(3)

Output to a PCAP using libpcap

## NAME

dnsjit.output.pcap - Output to a PCAP using libpcap

## SYNOPSIS

  local output = require("dnsjit.output.pcap").new()\
   output:open("file.pcap")\
   ...\
   output:close()

## DESCRIPTION

Output module for writing *dnsjit.core.object.pcap* objects to a PCAP,

### Functions

- **Pcap.new**()

  Create a new Pcap output.

- **Pcap:log**()

  Return the Log object to control logging of this instance or module.

- **Pcap:open**(file, linktype, snaplen)

  Open the PCAP *file* to write to using the *linktype* and *snaplen*. Uses **pcap\_dump\_open()** so you can pass "-" to it to open stdout, see it's man-page for more information. Returns 0 on success.

- **Pcap:close**()

  Close the PCAP.

- **Pcap:have\_errors**()

  Return true if the underlying *FILE\** indicates that there's been an error.

- **Pcap:receive**()

  Return the C functions and context for receiving objects.

## SEE ALSO

[**dnsjit.input.pcap**(3)](/dnsjit.input.pcap/3.md)

## 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*