6c7880ef76
This commit modifies most of the wire messages to uniquely identify any *active* channels by their funding output. This allows the wire protocol to support funding transactions which open several channels in parallel. Any pending channels created by partial completion of the funding workflow are to be identified by a uint64 initialized by both sides as follows: the initiator of the connection starts from 0, while the listening node starts from (1 << 63). These pending channel identifiers are expected to be monotonically increasing with each new funding workflow between two nodes. This identifier is volatile w.r.t to each connection initiation.
104 lines
2.8 KiB
Go
104 lines
2.8 KiB
Go
package lnwire
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
|
|
"github.com/roasbeef/btcd/wire"
|
|
)
|
|
|
|
// HTLCAddReject is sent by Bob when he wishes to reject a particular HTLC that
|
|
// Alice attempted to add via an HTLCAddRequest message. The rejected HTLC is
|
|
// referenced by its unique HTLCKey ID. An HTLCAddReject message is bound to a
|
|
// single active channel, referenced by a unique ChannelPoint. Additionally, the
|
|
// HTLCKey of the rejected HTLC is present
|
|
type HTLCAddReject struct {
|
|
// ChannelPoint references the particular active channel to which this
|
|
// HTLCAddReject message is binded to.
|
|
ChannelPoint *wire.OutPoint
|
|
|
|
// HTLCKey is used to identify which HTLC previously attempted to be
|
|
// added via an HTLCAddRequest message is being declined.
|
|
HTLCKey HTLCKey
|
|
}
|
|
|
|
// Decode deserializes a serialized HTLCAddReject message stored in the passed
|
|
// io.Reader observing the specified protocol version.
|
|
//
|
|
// This is part of the lnwire.Message interface.
|
|
func (c *HTLCAddReject) Decode(r io.Reader, pver uint32) error {
|
|
// ChannelPoint (8)
|
|
// HTLCKey (8)
|
|
err := readElements(r,
|
|
&c.ChannelPoint,
|
|
&c.HTLCKey,
|
|
)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// NewHTLCAddReject returns a new empty HTLCAddReject message.
|
|
func NewHTLCAddReject() *HTLCAddReject {
|
|
return &HTLCAddReject{}
|
|
}
|
|
|
|
// A compile time check to ensure HTLCAddReject implements the lnwire.Message
|
|
// interface.
|
|
var _ Message = (*HTLCAddReject)(nil)
|
|
|
|
// Encode serializes the target HTLCAddReject into the passed io.Writer observing
|
|
// the protocol version specified.
|
|
//
|
|
// This is part of the lnwire.Message interface.
|
|
func (c *HTLCAddReject) Encode(w io.Writer, pver uint32) error {
|
|
err := writeElements(w,
|
|
c.ChannelPoint,
|
|
c.HTLCKey,
|
|
)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Command returns the integer uniquely identifying this message type on the
|
|
// wire.
|
|
//
|
|
// This is part of the lnwire.Message interface.
|
|
func (c *HTLCAddReject) Command() uint32 {
|
|
return CmdHTLCAddReject
|
|
}
|
|
|
|
// MaxPayloadLength returns the maximum allowed payload size for a HTLCAddReject
|
|
// complete message observing the specified protocol version.
|
|
//
|
|
// This is part of the lnwire.Message interface.
|
|
func (c *HTLCAddReject) MaxPayloadLength(uint32) uint32 {
|
|
// 36 + 8
|
|
return 44
|
|
}
|
|
|
|
// Validate performs any necessary sanity checks to ensure all fields present
|
|
// on the HTLCAddReject are valid.
|
|
//
|
|
// This is part of the lnwire.Message interface.
|
|
func (c *HTLCAddReject) Validate() error {
|
|
// We're good!
|
|
return nil
|
|
}
|
|
|
|
// String returns the string representation of the target HTLCAddReject.
|
|
//
|
|
// This is part of the lnwire.Message interface.
|
|
func (c *HTLCAddReject) String() string {
|
|
return fmt.Sprintf("\n--- Begin HTLCAddReject ---\n") +
|
|
fmt.Sprintf("ChannelPoint:\t\t%d\n", c.ChannelPoint) +
|
|
fmt.Sprintf("HTLCKey:\t\t%d\n", c.HTLCKey) +
|
|
fmt.Sprintf("--- End HTLCAddReject ---\n")
|
|
}
|