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59878411c4
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
28 lines
630 B
Markdown
28 lines
630 B
Markdown
# MQTT in curl
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## Usage
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A plain "GET" subscribes to the topic and prints all published messages.
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Doing a "POST" publishes the post data to the topic and exits.
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Example subscribe:
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curl mqtt://host/home/bedroom/temp
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Example publish:
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curl -d 75 mqtt://host/home/bedroom/dimmer
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## What does curl deliver as a response to a subscribe
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It outputs two bytes topic length (MSB | LSB), the topic followed by the
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payload.
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## Caveats
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Remaining limitations:
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- Only QoS level 0 is implemented for publish
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- No way to set retain flag for publish
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- No TLS (mqtts) support
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- Naive EAGAIN handling won't handle split messages
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