Interaction Flow With Fees

Go trhough the complete deployment flow and send an incentivized message.

We have all the Smart Contract 📜 set we can start sending incentivized Cross-Chain messages. Now let complete the flow

Deploy sender contract on C-chain
Deploy receiver contract on myblockchain
Approve the sender contract to spend ERC20 funds from the message sender address
Send the message

Deploy Sender Contract

To deploy the sender contract run:

forge create --rpc-url myblockchain --private-key $PK src/9-incentivize-relayer/senderWithFees.sol:SenderWithFeesOnCChain

Save the Sender Contract Address

export SENDER_ADDRESS=0x...

Deploy Receiver Contract

Now, deploy the receiver contract.

forge create --rpc-url myblockchain --private-key $PK src/9-incentivize-relayer/receiverWithFees.sol:receiverWithFeesOnCChain

Save the Receiver Contract Address

export RECEIVER_ADDRESS=0x...

👩 The Message Sender (User) requires to approve the Cross-Avalanche L1 dApp as a spender on the ERC20 contract to be used as fee. To do that lets use the function "approve" on our deployed FEE contract.

cast send --rpc-url local-c --private-key $PK ERC20_fee_address "approve(address,uint256)" SENDER_ADDRESS 500000000000000

Send an incentivized message

cast send --rpc-url local-c --private-key $PK SENDER_ADDRESS "sendMessage(address, string, address)" $RECEIVER_ADDRESS, "Hello", $ERC20_fee_address

Verify message was received on Avalanche L1

cast call --rpc-url local-c RECEIVER_ADDRESS "lastMessage()(string)"