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setDappMetadata Function

function setDappMetadata(
    string memory feePayerAddress
    ) external returns (uint64)
  • To facilitate cross-chain transactions, it is necessary to pay the fees on the Router chain. This can be achieved using the setDappMetadata function available in the Gateway contracts. The function takes a feePayerAddress parameter, which represents the account responsible for covering the transaction fees for any cross-chain requests originating from the dApp.
  • Once the feePayerAddress is set, the designated fee payer must approve the request to act as the fee payer on the Router chain. Without this approval, dApps will not be able to execute any cross-chain transactions.
  • It's important to note that any fee refunds resulting from these transactions will be credited back to the dApp's feePayerAddress on the Router chain.