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

# dnsjit.output.respdiff(3)

Output to respdiff LMDB

## NAME

dnsjit.output.respdiff - Output to respdiff LMDB

## SYNOPSIS

  local output = require("dnsjit.output.respdiff").new("/path/to/lmdb")

## DESCRIPTION

Output to an LMDB database (format 2018-05-21) that can be used by respdiff to compare the responses found in the input data with the responses received. The receive function expects to get a chain of 2 or 3 *core.object.payload*. For a completed query; The top of the chain is the query, after it the original response and then the received response. For a timed out query; The top of the chain is the query, after it the original response.

### Functions

- **Respdiff.new**(path, origname, recvname, mapsize)

  Create a new Respdiff output and created the LMDB database in the directory *path*. The *origname* and *recvname* are used to populate the meta table, these names should be the same as what is configured in *respdiff.cfg*. Optional *mapsize* can be given to increase the database size beyond the default size of 10MB.

- **Respdiff:log**()

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

- **Respdiff:receive**()

  Return the C functions and context for receiving objects.

- **Respdiff:commit**(start\_time, end\_time)

  Commit the LMDB transactions, can not store any more objects after this call. The given *start\_time* and *end\_time* are used to fill the meta table.

## SEE ALSO

**respdiff** https://gitlab.nic.cz/knot/respdiff

## 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*