Inbox.sol Spec

initialize(contract IBridge _bridge, address _whitelist) (external)

sendL2MessageFromOrigin(bytes messageData) → uint256 (external)

Send a generic L2 message to the chain

This method is an optimization to avoid having to emit the entirety of the messageData in a log. Instead validators are expected to be able to parse the data from the transaction's input

• messageData: Data of the message being sent

sendL2Message(bytes messageData) → uint256 (external)

Send a generic L2 message to the chain

This method can be used to send any type of message that doesn't require L1 validation

• messageData: Data of the message being sent

sendL1FundedUnsignedTransaction(uint256 maxGas, uint256 gasPriceBid, uint256 nonce, address destAddr, bytes data) → uint256 (external)

sendL1FundedContractTransaction(uint256 maxGas, uint256 gasPriceBid, address destAddr, bytes data) → uint256 (external)

sendUnsignedTransaction(uint256 maxGas, uint256 gasPriceBid, uint256 nonce, address destAddr, uint256 amount, bytes data) → uint256 (external)

sendContractTransaction(uint256 maxGas, uint256 gasPriceBid, address destAddr, uint256 amount, bytes data) → uint256 (external)

depositEth(uint256 maxSubmissionCost) → uint256 (external)

createRetryableTicket(address destAddr, uint256 l2CallValue, uint256 maxSubmissionCost, address excessFeeRefundAddress, address callValueRefundAddress, uint256 maxGas, uint256 gasPriceBid, bytes data) → uint256 (external)

Put an message in the L2 inbox that can be reexecuted for some fixed amount of time if it reverts

all msg.value will deposited to callValueRefundAddress on L2

• destAddr: destination L2 contract address

• l2CallValue: call value for retryable L2 message

• maxSubmissionCost: Max gas deducted from user's L2 balance to cover base submission fee

• excessFeeRefundAddress: maxgas x gasprice - execution cost gets credited here on L2 balance

• callValueRefundAddress: l2Callvalue gets credited here on L2 if retryable txn times out or gets cancelled

• maxGas: Max gas deducted from user's L2 balance to cover L2 execution

• gasPriceBid: price bid for L2 execution

• data: ABI encoded data of L2 message

Returns: unique: id for retryable transaction (keccak256(requestID, uint(0) )