Cross-Chain Messaging Demo

This is a demonstration of sending arbitrary data across chains using the Telepathy Protocol. Try out the demo here!

Contracts

The source chain contract CrossChainMailer concatenates together a string message that includes:

• arbitrary text
• the sender's balance
• the sender's ENS name (if applicable)

It then sends this data to the Telepathy Router, which means it will be relayed to the destination chain contract specified in:

    telepathyRouter.send(_destinationChainId, _destinationMailbox, bytes(data));

Once finalization occurs, it can be relayed to the destination chain contract CrossChainMailbox, which handles the message in:

    function handleTelepathyImpl(uint32 _sourceChainId, address _sourceAddress, bytes memory _message)
        internal
        override
    {
        messages.push(string(_message));
        emit MessageReceived(_sourceChainId, _sourceAddress, string(_message));
    }

It store the message and emit an event.