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f6b3c25f95
This commit modifies the Message interface to convert the Command method to a MsgType method that uses a new set of message type for all the defined messages. These new messages types nearly exactly match the message types used within the current draft of the BOLT specifications.
68 lines
2.0 KiB
Go
68 lines
2.0 KiB
Go
package lnwire
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import "io"
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// PingPayload is a set of opaque bytes used to pad out a ping message.
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type PingPayload []byte
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// Ping defines a message which is sent by peers periodically to determine if
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// the connection is still valid. Each ping message carries the number of bytes
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// to pad the pong response with, and also a number of bytes to be ignored at
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// the end of the ping message (which is padding).
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type Ping struct {
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// NumPongBytes is the number of bytes the pong response to this
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// message should carry.
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NumPongBytes uint16
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// PaddingBytes is a set of opaque bytes used to pad out this ping
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// message. Using this field in conjunction to the one above, it's
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// possible for node to generate fake cover traffic.
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PaddingBytes PingPayload
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}
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// NewPing returns a new Ping message.
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func NewPing(numBytes uint16) *Ping {
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return &Ping{
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NumPongBytes: numBytes,
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}
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}
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// A compile time check to ensure Ping implements the lnwire.Message interface.
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var _ Message = (*Ping)(nil)
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// Decode deserializes a serialized Ping message stored in the passed io.Reader
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// observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (p *Ping) Decode(r io.Reader, pver uint32) error {
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return readElements(r,
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&p.NumPongBytes,
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&p.PaddingBytes)
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}
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// Encode serializes the target Ping into the passed io.Writer observing the
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// protocol version specified.
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//
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// This is part of the lnwire.Message interface.
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func (p *Ping) Encode(w io.Writer, pver uint32) error {
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return writeElements(w,
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p.NumPongBytes,
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p.PaddingBytes)
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}
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// MsgType returns the integer uniquely identifying this message type on the
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// wire.
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//
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// This is part of the lnwire.Message interface.
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func (p *Ping) MsgType() MessageType {
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return MsgPing
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}
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// MaxPayloadLength returns the maximum allowed payload size for a Ping
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// complete message observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (p Ping) MaxPayloadLength(uint32) uint32 {
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return 65532
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}
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