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chunk_shutdown_ack.go
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chunk_shutdown_ack.go
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// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT
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
}
// Shutdown ack chunk errors
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()
}