Working With the Retrieve Message Progress Node

In this quick tutorial, we will cover “Working With the Retrieve Message Progress Node”. This video goes through a step-by-step guide on how to implement your own flow that shows you how the Retrieve Message Progress Node functions.

In this video we will cover:

• Building a Retrieve Message Progress Node flow
• Running the flow to see its results

Prerequisite

• A Free Catenis Development account or Production account
• Node-RED installed on either a local or cloud environment
• Catenis Flow Pallet installed on Node-RED
• A Catenis Virtual Device configured on Node-RED
• Basic understanding of how to use Node-RED
• Basic understanding of Bitcoin Blockchain concepts
• Basic understanding of how to handle large streaming content on the internet

Thank you for watching Working With the Retrieve Message Progress Node in the Catenis Flow tutorial series. Watch the next video, Understanding the List Messages Node, to further expand your knowledge.

Links from this video for easy access:

• Understanding the Retrieve Message Progress Node: https://blockchainofthings.com/tutorials/understand-retrieve-msg-progress-node
• Understanding the List Messages Node: https://blockchainofthings.com/tutorials/understand-list-messages-node

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[Music]

Hi, this is Clara for Blockchain of Things.

In this tutorial, we’ll create a flow containing
the Retrieve Message Progress Node.

If you don’t know what a Retrieve Message Progress Node is,

make sure you check out the previous video titled “Understanding the Retrieve Message Progress Node”.

Which can be found at this link:

Let’s get started.

Drag-and-drop a Retrieve Message Progress Node
into the Node-RED workspace.

Double-click it to display its properties slide-out panel.

On the device drop-down field of the properties slide-out panel,

choose your Catenis Virtual Device.

Add the node’s configuration information based on your needs to each field of the properties slide-out panel

Wire this node to a Debug Node and open the Debug Sidebar.

Next, drag-and-drop an Inject Node to the Node-RED workspace.

Wire the Inject Node to the Retrieve Message Progress Node.

Then double-click the Inject Node to open its
properties slide-out panel.

Alter the information in the Inject Node’s properties slide-out panel

by selecting the dropdown payload field & choose the string type.

Enter the message ID you wish to pass as
input to the Catenis Node

Such as this example string input.

This must be the ID of an asynchronous message.

After entering your message ID, click the done button.

Click the deploy button to deploy the flow.

Now, let’s test the flow.

Click the button on the left of the Inject Node to send
the input from the Inject Node through the flow.

The Debug Sidebar should display the returned JSON object containing the API call results to the right side of the workspace.

Great work!

Now that you know how to create a flow using the Retrieve Message Progress Node,

it’s time to move on to your next tutorial.

where you’ll learn all about the List Messages Node.

[Music]