Not able to publish a message to queue in RabbitMQ using it's HTTP API

Question

I am using the REST API http://192.168.99.100:32787/api/exchanges/%2f/amq.direct/publish to publish a message to my helloworld.q queue.

Payload:

{"properties":{},"routing_key":"","payload":"Hello World","payload_encoding":"string"}

I have not created any new exchanges. I wasn't sure which exchange to specify hence used amq.direct in the rest url. I have already provided the Basic Auth credentials and I am getting following response from the API.

{
    "routed": false
}

Not sure what's wrong.

The latest documentation on how to use it's HTTP API can be found here. https://rawcdn.githack.com/rabbitmq/rabbitmq-management/rabbitmq_v3_6_11/priv/www/api/index.html

Nothing in your request or properties indicates the queue to which the message should be published. How did you ever expect it to work with a direct exchange?!?! — Luke Bakken
– Luke Bakken, Commented Nov 17, 2018 at 15:10

Nicolas · Accepted Answer · 2017-08-24 21:41:02Z

5

You have two ways to make that work:

Either you use the default exchange and specify your queue name as routing key (otherwise RabbitMQ has no clue regarding which queue you want your message to go):

POST /api/exchanges/%2f//publish HTTP/1.1 {"properties":{},"routing_key":"helloworld.q","payload":"Hello World","payload_encoding":"string"}
Or you explicitly send it to the amq.direct exchange but then you have to create a binding between helloworld.q and amq.direct before publishing the message. The routing key of the message you publish will have to match the one you specify on the binding too.

answered Aug 24, 2017 at 21:41

Nicolas

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1 Comment

ShaneMit Over a year ago

This didn't work for me because the queue didn't already exist. ;)

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