Function: send(SendParam sendParam, MessagingFee fee, address refundAddress)

This function debits tokens from the caller, builds and sends a cross-chain message with the provided fee, refunds leftovers to refundAddress, and returns messaging and OFT receipts.

This function is identical to the send function from LayerZero's OFTCoreUpgradeable.sol contract except that it adds additional zero checks on addresses, it uses whenNotPaused modifier and it uses _msgSender() instead of msg.sender.

Inputs

• sendParam

  • Control: Fully controlled by the caller.

  • Impact: Structure for sending includes the receiver address and amounts.

• fee

  • Control: Fully controlled by the caller.

  • Impact: Fee data for LayerZero sending.

• refundAddress

  • Control: Fully controlled by the caller.

  • Impact: Address for refunding with LayerZero sending.

Branches and code coverage

Intended branches

• Check if the receiver address and refundAddress are not zero.

  Test coverage

• Check if the send amount is zero.

  Test coverage

Negative behavior

• If the receiver address or refundAddress is zero, revert transaction with Send__ZeroAddress.

  Negative test

• If the send amount is zero, revert transaction with Send__ZeroAmount.

  Negative test