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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Utilities & Libraries
Utilities Reference
M
mdnsd
Multicast and Unicast DNS daemon

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
- Quickstart Guide
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  The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.
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        Check MD5 checksums (POSIX, toybox)
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        Multicast and Unicast DNS daemon
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Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

mdnsd

QNX SDP8.0Utilities ReferenceUtilities

Multicast and Unicast DNS daemon

Syntax:

mdnsd [-debug] [ -U uid[:gid] ]

Runs on:

QNX OS

Options:

-debug: Run mdnsd as a foreground process and enable debug mode.
-U uid[:gid]: Set the user ID and group ID to run as.

Description:

The mdnsd daemon (also known as mDNSResponder on some systems) is a daemon that provides Multicast DNS and DNS Service Discovery.

The daemon listens on UDP port 5353 for Multicast DNS Query packets. When it receives a query for which it knows an answer, mdnsd issues the appropriate Multicast DNS Reply packet.

It also performs Unicast and Multicast DNS Queries on behalf of client processes, and maintains a cache of the replies.

Logging

A SIGUSR1 signal dumps a state log to the system logs (slogs):

slay -s SIGUSR1 mdnsd

A SIGUSR2 signal toggles additional logging:

slay -s SIGUSR2 mdnsd

For more information on:

Multicast DNS, see http://www.multicastdns.org/.
DNS Service Discovery, see http://www.dns-sd.org/.

For the source code to mdnsd, see http://developer.apple.com/darwin/projects/bonjour/.

Files:

/var/run/mdnsd: Create this directory before you attempt to start mdnsd. The mdnsd daemon uses it to create pipes, which support interprocess communication.

Page updated: December 04, 2024