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Learn Blockchain Programming with JavaScript

You're reading from   Learn Blockchain Programming with JavaScript Build your very own Blockchain and decentralized network with JavaScript and Node.js

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Product type Paperback
Published in Nov 2018
Publisher Packt
ISBN-13 9781789618822
Length 252 pages
Edition 1st Edition
Languages
Concepts
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Author (1):
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Eric Traub Eric Traub
Author Profile Icon Eric Traub
Eric Traub
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Table of Contents (10) Chapters Close

Preface 1. Setting up the Project 2. Building a Blockchain FREE CHAPTER 3. Accessing the Blockchain through an API 4. Creating a Decentralized Blockchain Network 5. Synchronizing the Network 6. Consensus Algorithms 7. Block Explorer 8. In conclusion... 9. Other Books You May Enjoy

Building the /transaction/broadcast endpoint

In this section, let's build a new endpoint called /transaction/broadcast. Anytime we want to create a new transaction from now on, we're going to hit this /transaction/broadcast endpoint. This endpoint will do two things:

  • It will create a new transaction.
  • It will then broadcast that new transaction to all the other nodes in the network.

Let's go through the following steps to create the endpoint:

  1. To add this endpoint, go to the dev/networkNode.js file where we have defined all the endpoints, and add this new endpoint as follows:
app.post('/transaction/broadcast', function(req, res) )  {

});
  1. Then, in order for the endpoint to carry out the aforementioned functionalities, add the following highlighted code to the endpoint:
app.post('/transaction/broadcast', function(req, res) )  {
const newTransaction...
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