RabbitMQ x- headers

xheaders.md

Name of RabbitMQ header	App	Type	Purpose
x-received-from	Federation	internal	record hop information for cycle detection
x-death	Dead lettering	internal	record dead lettering information (somewhat compacted)
x-stream-offset	Streams	outgoing annotation	include the offset for a given message consumed using AMQP
x-delivery-count	Quorum	outgoing annotation	include the number of delivery attemps for messages consumed from a quorum queue
x-stream-filter	Streams	incoming annotation	include a message filter string used for stream filtering feature
CC, BCC	Routing	incoming annotation	used for including additional routes, not evaluated beyond routing, really ought to be x- headers
x-first-death-reason	DLX	outgoing annotation	dead lettering info
x-first-death-queue	DLX	outgoing annotation	dead lettering queue name
x-first-death-exchange	DLX	outgoing annotation	dead lettering exchange name
x-shovelled	Shovel?	outgoing annotation	array, added if dest-add-forward-headers is true
x-shovelled-timestamp	Shovel	outgoing annotations	timestmap, added if dest-add-timestamp-header true
x-mqtt-publish-qos	MQTT	internal	record publishign qos
x-amqp-1.0-properties	AMQP 1.0	internal	section serialisation workaround
x-amqp-1.0-app-properties	AMQP 1.0	internal	section serialisation workaround
x-amqp-1.0-message-annotations	AMQP 1.0	internal	section serialisation workaround
x-amqp-1.0-footer	AMQP 1.0	internal	section serialisation workaround