48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
|
package sctp
|
||
|
|
|
||
|
|
import (
|
||
|
|
"errors"
|
||
|
|
"fmt"
|
||
|
|
)
|
||
|
|
|
||
|
|
/*
|
||
|
|
chunkShutdownAck represents an SCTP Chunk of type chunkShutdownAck
|
||
|
|
|
||
|
|
0 1 2 3
|
||
|
|
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
||
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
||
|
|
| Type = 8 | Chunk Flags | Length = 4 |
|
||
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
||
|
|
*/
|
||
|
|
type chunkShutdownAck struct {
|
||
|
|
chunkHeader
|
||
|
|
}
|
||
|
|
|
||
|
|
var errChunkTypeNotShutdownAck = errors.New("ChunkType is not of type SHUTDOWN-ACK")
|
||
|
|
|
||
|
|
func (c *chunkShutdownAck) unmarshal(raw []byte) error {
|
||
|
|
if err := c.chunkHeader.unmarshal(raw); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
if c.typ != ctShutdownAck {
|
||
|
|
return fmt.Errorf("%w: actually is %s", errChunkTypeNotShutdownAck, c.typ.String())
|
||
|
|
}
|
||
|
|
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *chunkShutdownAck) marshal() ([]byte, error) {
|
||
|
|
c.typ = ctShutdownAck
|
||
|
|
return c.chunkHeader.marshal()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *chunkShutdownAck) check() (abort bool, err error) {
|
||
|
|
return false, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// String makes chunkShutdownAck printable
|
||
|
|
func (c *chunkShutdownAck) String() string {
|
||
|
|
return c.chunkHeader.String()
|
||
|
|
}
|