Note
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Recap
In our previous article (Review of Ethereum Developer Chain Options), we discussed what Ethereum Chain Options are and how to use them.
In this article, we learn about Ethereum API and its console options.
API and console options
If you have gone through the Setting up a local private Ethereum blockchain, you’ve already encountered a few API and console options:
- –ipcdisable and –rpcport: The –ipcdisable flag disables the IPC-RPC server.
- –rpcport decides which listening port to use for the HTTP-RPC server.
- –rpc starts the HTTP JSON-RPC server. Alternatively, you can use admin.startRPC (addr, port) to start the HTTP JSON-RPC server.
- In order to access RPC via a browser without request failures (due to same-origin policy), –rpccorsdomain needs to be supplied with the comma-separated set of domains. Like the following command, we start with geth and append the– rpc, and –rpccorsdomain options with a local host, as follows:
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$ geth –rpc –rpccorsdomain http://localhost:3000
- To enable management APIs, use the flags in the format of –{interface}api. For example, –rpcapi is for the HTTP endpoint, while –wsapi is for the WebSocket. The default –ipcapi setting will enable all the APIs for the ipc interface, and db, eth, net, and web3 for the HTTP and WS interfaces. Please enable APIs for different interfaces with caution. All the management APIs are listed in the following table:
Management API namespaces | Support | Methods |
admin | Nodes management | datadir, nodeInfo, peers, setSolc, startRPC, startWS, stopRPC, stopWS |
debug |
Nodes debugging |
backtraceAt, blockProfile, cpuProfile, dumpBlock, gcStats, getBlockRlp, goTrace, memStats, seedHashsign, setBlockProfileRate, setHead, stacks, startCPUProfile, startGoTrace, stopCPUProfile, stopGoTrace, traceBlock, traceBlockByNumber, traceBlockByHash, traceBlockFromFile, traceTransaction, verbosity, vmodule, writeBlockProfile, writeMemProfile |
miner | Miner and Ethash DAG management | setExtra, setGasPrice, start, stop, getHashrate, setEtherbase |
personal |
Accounts management | ecRecover, importRawKey, listAccounts, lockAccount, newAccount, unlockAccount, sendTransaction, sign |
txpool |
Pool and transactions management |
content, inspect, status |
Apart from the DApp namespaces such as eth, shh, and web3, geth allows the extra management API namespaces we mentioned previously:
- Admin allows access to a few RPC methods, giving better control over the Geth instance
- Debug helps developers debug during runtime
- Miner provides extra mining settings, and helps developers gain remote control over a mining operation
- Through a personal API, private keys in the key store can be managed
- The txpoolAPI allows developers to access the transaction pool, as well as pending and queued transactions.
Next Article
In our next article (Review of Ethereum Networking Options), we discuss Ethereum Networking Options.
This article is written in collaboration with Brian Wu who is a leading author of “Learn Ethereum: Build your own decentralized applications with Ethereum and smart contracts” book. He has written 7 books on blockchain development.
Resources
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Self-Paced Blockchain Courses
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Articles and Tutorials on Blockchain Technology
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- History and Evolution of Blockchain Technology from Bitcoin
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- Blockchain Crowdfunding Security Token or Initial Coin Offerings
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- How Decentralized Peer-To-Peer Network Works
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- What Is A Cryptographic Hash Function
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Articles and Tutorials on Ethereum and Solidity
If you like to learn more about blockchain development in Ethereum with Solidity, reading the following articles and tutorials is highly recommended:
- Review of Architecture and Components of Ethereum
- Comprehensive Blockchain Ethereum Developer Guide from Beginner to Advance Level
- How to Write Ethereum Smart Contracts with Solidity in 1 hour
- Review of Architecture and Components of Ethereum
- How Ethereum Manages Accounts
- How Ethereum Manages Transactions
- How Smart Contracts Work in Ethereum
- How Ether and Gas Work in Ethereum
- How Ethereum Virtual Machine works
- How address and wallet work in Ethereum
- How mining works in Ethereum
- List of Tools and Technologies in Ethereum Ecosystem
- Review of challenges in distributed systems
- Review of Cap Theorem in Distributed Systems
- Horizontal Scaling versus Vertical Scaling in Distributed Systems
- How to Scale up Ethereum Blockchain Applications
- Review of scaling solutions for Ethereum
- How to Manage Ethereum State Channel with Raiden
- How Plasma Chains Work in Ethereum
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- How Proof-of-Stack Consensus Works in Ethereum
- A roadmap for Implementing Ethereum 2.0
- How to work with Decentralized Data and Content Storage in Ethereum
- How Decentralized Messaging with Whisper Works in Ethereum
- Review of Infura for Ethereum Development
- Review of Infura Ethereum API
- How to Use Remix with Infura for Ethereum Development
- How Ethereum Client API Works
- How Ethereum IPFS Storage Works
- How to Install and Start Ethereum IPFS Storage
- How to Run Ethereum IPFS Storage
- How to Work with Ethereum Swarm Storage
- How to Install Ethereum Swarm Storage
- How to Handle Ethereum Messages with Whisper
- Review of Popular Ethereum Smart Contract Libraries
- Review of Private and Permissioned blockchain
- How to Set up a Local Private Ethereum Blockchain
- How to Run Geth on a Local Private Ethereum Blockchain
- How to Build a Local Private Ethereum Blockchain with Mining
- How to Run Geth on a Local Private Ethereum Blockchain with Mining
- How to Create an Account on a Local Private Ethereum Blockchain
- How to Use Ethereum Optional Flags with New Chains
- Review of Ethereum Options for Development and Testing
- Review of Ethereum Developer Chain Options
- Review of Ethereum API and Console Options
- Review of Ethereum Networking Options
- Review of Ethereum Transaction Pool Options
Articles and Tutorials on Hyperledger Family
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- Introduction to Hyperledger Architecture, Projects, Tools and Libraries
- Complete Review of Hyperledger Fabric Architecture and Components
- Hyperledger Fabric for System Administers versus Developers
- How to use Prometheus and Grafana to monitor Hyperledger Fabric
- Blockchain Developer Guide- How to Install Hyperledger Fabric on AWS
- Blockchain Developer Guide- How to Install and work with Hyperledger Sawtooth
- Blockchain Developer Guide- How to Install Hyperledger Burrow on AWS
- Blockchain Developer Guide- How to Install Hyperledger Iroha on AWS
- Blockchain Developer Guide- How to Install Hyperledger Indy and Indy CLI on AWS
- Blockchain Developer Guide- How to Install Hyperledger Seth and Docker on AWS
- Blockchain Developer Guide- How to Configure Hyperledger Sawtooth Validator and REST API on AWS
- Blockchain Developer Guide- How to Build Transaction Processor as a Service and Python Egg for Hyperledger Sawtooth
- Blockchain Developer Guide- How to Deploy Ethereum Smart Contracts with Hyperledger Burrow
- Blockchain Developer Guide- How to Create Cryptocurrency Using Hyperledger Iroha CLI
- Blockchain Developer Guide- How to Explore Hyperledger Indy Command Line Interface
- Blockchain Developer Guide- Comprehensive Blockchain Hyperledger Developer Guide from Beginner to Advance Level
- Introduction to Hyperledger Sawtooth Blockchain Development
Articles and Tutorials on R3 Corda
If you like to learn more about blockchain development on Corda , reading the following articles and tutorials is highly recommended:
Articles and Tutorials on Other Blockchain Platforms
If you like to learn more about blockchain development in other platforms, reading the following articles and tutorials is highly recommended: