Message Feed on Solana

This project demonstrates how to use the Solana Javascript API to build, deploy, and interact with programs on the Solana blockchain, implementing a simple feed of messages To see it running go to https://solana-example-messagefeed.herokuapp.com/

Getting Started

First fetch the npm dependencies, including @solana/web3.js, by running:

$ npm install

Select a Network

The example connects to a local Solana network by default.

To start a local Solana network run:

$ npm run localnet:update
$ npm run localnet:up

Solana network logs are available with:

$ npm run localnet:logs

For more details on working with a local network, see the full instructions.

Alternatively to connect to the public testnet, export LIVE=1 in your environment. By default LIVE=1 will connect to the beta testnet. To use the edge testnet instead define export CHANNEL=edge in your environment (see url.js for more)

Build the on-chain program

Two versions of the program are provided, one written in C and the other in Rust. The build process for each produce the same a BPF ELF shared object called dist/program/messagefeed.so. They are interchangable so just pick one to use.

BPF C

$ V=1 make -C program-bpf-c

$ npm run build:bpf-c

BPF Rust

$ ./program-bpf-rust/build.sh

$ npm run build:bpf-rust

Start the web server

The message feed program is deployed by the web server at src/server.js, so start it first:

$ npm run start-server

Run the Command-Line Front End

After building the program and starting the web server, you can view the current message feed by running

$ npm run start

and post a new message with:

$ npm run start -- "This is a message"

Run the WebApp Front End

After building the program and starting the web server, start the webapp locally by running:

$ npm run dev

then go to http://localhost:8080/ in your browser.

eyeoftheday/example-messagefeed