Security configuration#

MQTTBroker accepts the same security object pattern as other FastStream brokers where supported.

TLS#

Provide BaseSecurity with an SSL context, or pass tls= directly to MQTTBroker (False, True, or ssl.SSLContext) — forwarded to zmqtt.MQTTClient.

Username and password#

Use constructor username / password, or SASLPlaintext from faststream.security so credentials are merged consistently with TLS settings.

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from faststream.mqtt import MQTTBroker
from faststream.security import SASLPlaintext

security = SASLPlaintext(username="device", password="secret")
broker = MQTTBroker("mqtt.example.com", port=8883, security=security)

Unsupported security subclasses raise NotImplementedError at broker construction time.