mqtt-simple1p

Very simple mqtt implementation

Usage

mqtt-simple -h mqtt.example.org -c -s "sensors/#" -s "debug/#" -s "#"

mqtt-simple -h mqtt.example.org -p "example/unretained" -m "message"

mqtt-simple -h mqtt.example.org -r -p "example/retained" -m "message"

tail {-f logfile | mqtt-simple -h mqtt.example.org -p "log/example"}

mqtt-simple --ssl --insecure ...

mqtt-simple --ssl --ca ca.crt --cert client.crt --key client.key

Overview

This is just a simple utility program. It doesn't do much. Specifically, all the QoS features are unsupported. Also, don't expect fancy error messages and such :-)

Options

-h --host: MQTT server to connect to, required.

-p --publish topic: Publish a message. Uses the message given with "-m", or will read lines from stdin, and publish a message for each given line.

-m --message message: Message to publish. Requires "-p".

-r --retain: Causes messages published with "-p" to have the "retain" flag on.

-s --subscribe filter: Subscribe to the given topic filter. Use the standard MQTT wildcards like "+" and "#". Outputs matching published messages on stdout. Can be given multiple times.

-e --except filter: Suppress published messages that match filter. Can be given multiple times.

--count number: Quit after receiving number messages.

--message-only: Output only the message values, without the topics.

-1 --one: Shortcut for "--count 1 --message-only".

--color

--no-color

For each given "-s", print the matching topic in a different color. Note that the first matching topic will be used for color selection, so specify the topics with the most specific one first, the least specific one (like "#") last.

Color is enabled by default if stdout is a terminal.

--raw: Pass ASCII control characters unaltered. By default, they're replaced by "^@" notation or, when "--color" is enabled, reverse video characters. For example, an ASCII newline would be displayed as "^J" unless "--raw" is used.

-d --datetime format: Prefix messages with a timestamp. Optionally, a format for "strftime" can be supplied.

-u --user --username username: Specify a username. Overrides the environment variable "MQTT_SIMPLE_USERNAME".

--pass --password password: Specify a password. Overrides the environment variable "MQTT_SIMPLE_PASSWORD".

SSL options

--ssl: Use SSL instead of unencrypted connection.

--insecure

Disable SSL certificate validation and enable clear text passwords. Useful for testing, bad idea in production.

Overrides the environment variables "MQTT_SIMPLE_SSL_INSECURE" and "MQTT_SIMPLE_ALLOW_INSECURE_LOGIN".

--ca path

The Certificate Authority to validate against. path can be a file or a directory. If unspecified, IO::Socket::SSL attempts to use the system wide CA configuration.

Overrides the environment variable "MQTT_SIMPLE_SSL_CA".

--cert path

--key path

A client certificate with its key.

Override the environment variables "MQTT_SIMPLE_SSL_CERT" and "MQTT_SIMPLE_SSL_KEY".