Mastering Blockchain - Second Edition

POST requests

It is possible to interact with geth via JSONRPC over HTTP. For this purpose, the curl tool can be used.

Curl is available at https://curl.haxx.se/.

Some examples are shown here to familiarize you with the POST request and show how to make POST requests using curl.

POST is request method supported by HTTP. You can read more about POST here https://en.wikipedia.org/wiki/POST_(HTTP)

Before using the JSONRPC interface over HTTP, the geth client should be started up with appropriate switches, as shown here:

--rpcapi web3 

This switch will enable the web3 interface over HTTP.

The Linux command, curl, can be used for the purpose of communicating over HTTP, as shown here in the example.

Retrieve the list of accounts: For example, in ...