host

var (
	// ErrAccountPersist occurs when an ephemeral account could not be persisted
	// to disk.
	ErrAccountPersist = errors.New("ephemeral account could not be persisted to disk")

	// ErrAccountExpired occurs when a blocked action can not complete because
	// the account has expired in the meantime.
	ErrAccountExpired = errors.New("ephemeral account expired")

	// ErrBalanceInsufficient occurs when a withdrawal could not be successfully
	// completed because the account balance was insufficient.
	ErrBalanceInsufficient = errors.New("ephemeral account balance was insufficient")

	// ErrBalanceMaxExceeded occurs when a deposit would push the account's
	// balance over the maximum allowed ephemeral account balance.
	ErrBalanceMaxExceeded = errors.New("ephemeral account maximam balance exceeded")

	// ErrDepositCancelled occurs when the host was willingly or unwillingly
	// stopped in the midst of a deposit process.
	ErrDepositCancelled = errors.New("ephemeral account deposit cancelled due to a shutdown")

	// ErrWithdrawalCancelled occurs when the host was willingly or unwillingly
	// stopped in the midst of a withdrawal process.
	ErrWithdrawalCancelled = errors.New("ephemeral account withdrawal cancelled due to a shutdown")

	// ErrWithdrawalSpent occurs when a withdrawal is requested using a
	// withdrawal message that has been spent already.
	ErrWithdrawalSpent = errors.New("withdrawal message was already spent")

	// ErrZeroAccountID occurs when an account is opened with the ZeroAccountID.
	ErrZeroAccountID = errors.New("can't open an account with an empty account id")
)

var (
	// ErrBadContractOutputCounts is returned if the presented file contract
	// revision has the wrong number of outputs for either the valid or the
	// missed proof outputs.
	ErrBadContractOutputCounts = ErrorCommunication("rejected for having an unexpected number of outputs")

	// ErrBadContractParent is returned when a file contract revision is
	// presented which has a parent id that doesn't match the file contract
	// which is supposed to be getting revised.
	ErrBadContractParent = ErrorCommunication("could not find contract's parent")

	// ErrBadFileMerkleRoot is returned if the renter incorrectly updates the
	// file merkle root during a file contract revision.
	ErrBadFileMerkleRoot = ErrorCommunication("rejected for bad file merkle root")

	// ErrBadFileSize is returned if the renter incorrectly download and
	// changes the file size during a file contract revision.
	ErrBadFileSize = ErrorCommunication("rejected for bad file size")

	// ErrBadModificationIndex is returned if the renter requests a change on a
	// sector root that is not in the file contract.
	ErrBadModificationIndex = ErrorCommunication("renter has made a modification that points to a nonexistent sector")

	// ErrBadParentID is returned if the renter incorrectly download and
	// provides the wrong parent id during a file contract revision.
	ErrBadParentID = ErrorCommunication("rejected for bad parent id")

	// ErrBadPayoutUnlockHashes is returned if the renter incorrectly sets the
	// payout unlock hashes during contract formation.
	ErrBadPayoutUnlockHashes = ErrorCommunication("rejected for bad unlock hashes in the payout")

	// ErrBadRevisionNumber number is returned if the renter incorrectly
	// download and does not increase the revision number during a file
	// contract revision.
	ErrBadRevisionNumber = ErrorCommunication("rejected for bad revision number")

	// ErrBadSectorSize is returned if the renter provides a sector to be
	// inserted that is the wrong size.
	ErrBadSectorSize = ErrorCommunication("renter has provided an incorrectly sized sector")

	// ErrBadUnlockConditions is returned if the renter incorrectly download
	// and does not provide the right unlock conditions in the payment
	// revision.
	ErrBadUnlockConditions = ErrorCommunication("rejected for bad unlock conditions")

	// ErrBadUnlockHash is returned if the renter incorrectly updates the
	// unlock hash during a file contract revision.
	ErrBadUnlockHash = ErrorCommunication("rejected for bad new unlock hash")

	// ErrBadWindowEnd is returned if the renter incorrectly download and
	// changes the window end during a file contract revision.
	ErrBadWindowEnd = ErrorCommunication("rejected for bad new window end")

	// ErrBadWindowStart is returned if the renter incorrectly updates the
	// window start during a file contract revision.
	ErrBadWindowStart = ErrorCommunication("rejected for bad new window start")

	// ErrEarlyWindow is returned if the file contract provided by the renter
	// has a storage proof window that is starting too near in the future.
	ErrEarlyWindow = ErrorCommunication("rejected for a window that starts too soon")

	// ErrEmptyObject is returned if the renter sends an empty or nil object
	// unexpectedly.
	ErrEmptyObject = ErrorCommunication("renter has unexpectedly send an empty/nil object")

	// ErrHighRenterMissedOutput is returned if the renter incorrectly download
	// and deducts an insufficient amount from the renter missed outputs during
	// a file contract revision.
	ErrHighRenterMissedOutput = ErrorCommunication("rejected for high paying renter missed output")

	// ErrHighRenterValidOutput is returned if the renter incorrectly download
	// and deducts an insufficient amount from the renter valid outputs during
	// a file contract revision.
	ErrHighRenterValidOutput = ErrorCommunication("rejected for high paying renter valid output")

	// ErrIllegalOffsetAndLength is returned if the renter tries perform a
	// modify operation that uses a troublesome combination of offset and
	// length.
	ErrIllegalOffsetAndLength = ErrorCommunication("renter is trying to do a modify with an illegal offset and length")

	// ErrLargeSector is returned if the renter sends a RevisionAction that has
	// data which creates a sector that is larger than what the host uses.
	ErrLargeSector = ErrorCommunication("renter has sent a sector that exceeds the host's sector size")

	// ErrLateRevision is returned if the renter is attempting to revise a
	// revision after the revision deadline. The host needs time to submit the
	// final revision to the blockchain to guarantee payment, and therefore
	// will not accept revisions once the window start is too close.
	ErrLateRevision = ErrorCommunication("renter is requesting revision after the revision deadline")

	// ErrLongDuration is returned if the renter proposes a file contract with
	// an expiration that is too far into the future according to the host's
	// settings.
	ErrLongDuration = ErrorCommunication("renter proposed a file contract with a too-long duration")

	// ErrLowHostMissedOutput is returned if the renter incorrectly updates the
	// host missed proof output during a file contract revision.
	ErrLowHostMissedOutput = ErrorCommunication("rejected for low paying host missed output")

	// ErrLowHostValidOutput is returned if the renter incorrectly updates the
	// host valid proof output during a file contract revision.
	ErrLowHostValidOutput = ErrorCommunication("rejected for low paying host valid output")

	// ErrLowTransactionFees is returned if the renter provides a transaction
	// that the host does not feel is able to make it onto the blockchain.
	ErrLowTransactionFees = ErrorCommunication("rejected for including too few transaction fees")

	// ErrLowVoidOutput is returned if the renter has not allocated enough
	// funds to the void output.
	ErrLowVoidOutput = ErrorCommunication("rejected for low value void output")

	// ErrMismatchedHostPayouts is returned if the renter incorrectly sets the
	// host valid and missed payouts to different values during contract
	// formation.
	ErrMismatchedHostPayouts = ErrorCommunication("rejected because host valid and missed payouts are not the same value")

	// ErrSmallWindow is returned if the renter suggests a storage proof window
	// that is too small.
	ErrSmallWindow = ErrorCommunication("rejected for small window size")

	// ErrUnknownModification is returned if the host receives a modification
	// action from the renter that it does not understand.
	ErrUnknownModification = ErrorCommunication("renter is attempting an action that the host does not understand")

	// ErrVoidPayoutChanged is returned if the void payout changed even though
	// it wasn't expected to.
	ErrVoidPayoutChanged = ErrorCommunication("void payout shouldn't change")
)

var (
	// ErrPriceTableNotFound is returned when the price table for a certain UID
	// can not be found in the tracked price tables
	ErrPriceTableNotFound = errors.New("Price table not found")

	// ErrPriceTableExpired is returned when the specified price table has
	// expired
	ErrPriceTableExpired = errors.New("Price table requested is expired")
)

var (
	// ErrObligationLocked is returned if the file contract being requested is
	// currently locked. The lock can be in place if there is a storage proof
	// being submitted, if there is another renter altering the contract, or if
	// there have been network connections with have not resolved yet.
	ErrObligationLocked = errors.New("the requested file contract is currently locked")
)