IGMPQD aka. IGMP Query Daemon is a lightweight utility to periodically generate an IGMPv2 Query message. The message can be formed to contain whatever payload is necessary, within the RFC specifications (https://tools.ietf.org/html/rfc2236#section-2)
If this is useful, great. If you find need to extend or bugfix, even better, please fork and submit merge requests as necessary.
## Usage
Download an appropriate binary for your platform, or build you own.
### Print Version
./igmpqd version will produce something along the lines of:
$ ./igmpqd version
Version: 0.0.1 (Commit: 4758b59b1966700fbc1665bcd0bed5a35bd9c4a3)
Built: 2016-04-07 16:17:09 +0100 BST
Fingerprint: gc/darwin/amd64/go1.6
### Run the Daemon
Contrary to many other services, we don't fork/background the process. It's anticipated that you would run igmpqd with systemd, and therefore have a unit control the process execution apprpropriately.
To run the daemon, you use the "run" command (./igmpqd run). run takes several flags, as described below:
Usage:
igmpqd run [flags]
Flags:
--debug Enable debug messages to stderr.
-d, --dstAddress string Specified IP address to send the IGMP Query to.
(default "224.0.0.1")
-g, --grpAddress string Specified IP address to use as the Group Address.
Used to query for specific group members.
(default "0.0.0.0")
-I, --interface string Specified interface to send the IGMP Query.
(no default)
-i, --interval int The time in seconds to delay between sending IGMP
Query messages. (default 30)
-t, --ttl int The TTL of the IGMP Query.
(default 1)
-m, --maxResponseTime int Specifies the maximum allowed time before sending
a responding report in units of 1/10 second.
(default 100)