Her message

A decentralized chat application

Member

Time Yongyai 6030285121
Phum Lertritmahachai 6030462921
Jaturit Panpoonsup 6031007221
Purinut Thedwichienchai 6031046721

Installation

Run yarn install first.

yarn install

After that, install Metamask extension in your browser.
https://metamask.io/download.html

Run truffle dev in project root to start truffle development server.

truffle dev

Register an account from the truffle development server to Metamask by login to Metamask, then click the top right icon and select "Import Account".

When you finish registering, create a new network by clicking on network dropdown menu, then select "Custom RPC". Type the following:

• Network name: Anything
• New RPC Url: Your truffle network url (http://127.0.0.1:xxxx)
• Chain ID: Type some random hex number first (e.g. 0x1234) and it will tell you an available chain ID in the network. Type that chain ID instead.

After finish creating the custom RPC, connect to that network.

Now run yarn dev to start the frontend server.

yarn dev

Navigate to localhost:3000 to use the application.

Usage

If everything runs correctly, you should see a popup window telling you that you are not register. Type in your public key.

After that, you will be able to use the home page. Click "Add Contract" to add an account that you want to send message to. Type in their public key.

For demo purpose, you will only be able to communicate with the first contract you added to your account.

You can then type anything and send it to your first contract in the list.

Debugging

The application looks like it cannot load the Metamask account

• Try redeploy your contract in truffle, then reload the page 2-3 times. (This will create a new contract and your past action (e.g. register, send message) will be reset.

truffle deploy --reset

All transactions are failed.

• Try resetting your Metamask account by open Metamask, click top right icon, click "Setting" > "Advanced", click "Reset Account", then reload the page 2-3 times.