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Ethereum Cookbook

You're reading from Ethereum Cookbook Over 100 recipes covering Ethereum-based tokens, games, wallets, smart contracts, protocols, and Dapps

Product type Paperback

Published in Aug 2018

Publisher Packt

ISBN-13 9781789133998

Length 404 pages

Edition 1st Edition

Languages

Solidity

Tools

Ethereum

Concepts

Cryptocurrency

Author (1):

Manoj P R

View More author details

Table of Contents (18) Chapters

Title Page

Copyright and Credits

Packt Upsell

Contributors

Preface

1. Getting Started FREE CHAPTER

2. Smart Contract Development

3. Interacting with the Contract

4. The Truffle Suite

5. Tokens and ICOs

6. Games and DAOs

7. Advanced Solidity

8. Smart Contract Security

9. Design Decisions

10. Other Protocols and Applications

11. Miscellaneous

1. Other Books You May Enjoy

Leave a review - let other readers know what you think

Index

Interacting with Ethereum using JSON-RPC

You can completely avoid using web3.js and interact with your Ethereum node using JSON-RPC. It is a stateless, lightweight RPC protocol. Etherum JSON-RPC exposes various APIs that can be used within the same process, over sockets, over HTTP, or in various message passing environments.

These APIs are commonly used to interact with blockchain where JavaScript is not supported. In this recipe, you will learn to communicate with Ethereum using various JSON-RPC commands.

Getting ready

You need to have a fully functioning Ethereum node to test these APIs. By default, both geth and Parity expose port 8545 for JSON-RPC. Some examples are given in JavaScript, but you can use any programming language that supports HTTPS requests.

Make sure that you are starting your geth node with enough --rpcapi permissions:

$ geth --rpc --rpcapi "web3,eth,personal"

We will focus on a few important APIs here and you can always find the complete list for reference at github.com/ethereum...

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Authors (1)

Manoj P R

Manoj P R

Manoj P R is a tech-savvy person who has been working with distributed ledger technology for more than three years. His passion for the latest technology trends in the market has made him an avid learner and contributor in this space. He specializes in Ethereum, JavaScript, and Go. A self-taught programmer, Manoj started his programming career as a freelancer during his early academic life. He has developed many scalable enterprise blockchain solutions for various clients across the globe. He is currently associated with Conduent Labs as a Blockchain SME. He loves solving real-life problems using technology and is a lively contributor towards open source projects. Apart from work, Manoj likes traveling and writing.

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