mirror/curl
2
0
Fork 0
mirror of https://github.com/curl/curl.git synced 2024-12-27 06:59:43 +08:00
Code Issues Packages Projects Releases Wiki Activity
063bfa358e
curl/docs/MQTT.md
Bastian Krause 59878411c4
docs/MQTT: update state of username/password support 
PR #7243 implemented username/password support for MQTT, so let's drop
these items from the caveats.

Signed-off-by: Bastian Krause <bst@pengutronix.de>

Closes #7474
2021-07-22 00:06:15 +02:00

630 B
Raw Blame History

MQTT in curl

Usage

A plain "GET" subscribes to the topic and prints all published messages. Doing a "POST" publishes the post data to the topic and exits.

Example subscribe:

curl mqtt://host/home/bedroom/temp

Example publish:

curl -d 75 mqtt://host/home/bedroom/dimmer

What does curl deliver as a response to a subscribe

It outputs two bytes topic length (MSB | LSB), the topic followed by the payload.

Caveats

Remaining limitations:

  • Only QoS level 0 is implemented for publish
  • No way to set retain flag for publish
  • No TLS (mqtts) support
  • Naive EAGAIN handling won't handle split messages