JSON-RPC Server Introduction
The JSON-RPC server is one of the primary interfaces for interacting with Geth. It allows external applications to communicate with the Ethereum node using JSON-RPC protocol over HTTP, WebSocket, or IPC.
Overview
Geth provides a JSON-RPC API that can be accessed through different transport protocols. By default, the JSON-RPC server is disabled for security reasons, but it can be enabled with various command-line options.
Enabling the JSON-RPC Server
To start Geth with the JSON-RPC server enabled, you can use the following command:
geth --http --http.api eth,net,web3API Methods
The JSON-RPC API provides various methods for interacting with the Ethereum blockchain. These methods are organized into namespaces such as eth, net, web3, and more.
Security Considerations
When enabling the JSON-RPC server, it's important to consider security implications. By default, the server only accepts connections from localhost. If you need to allow remote connections, use the --http.addr and --http.corsdomain options carefully.
Batch Requests
JSON-RPC supports batch requests, which allow you to send multiple requests in a single HTTP call. This can improve performance when you need to make multiple consecutive API calls.