1
use super::{chunk_header::*, chunk_type::*, *};
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3
///chunkShutdownAck represents an SCTP Chunk of type chunkShutdownAck
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///
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///0                   1                   2                   3
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///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
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///+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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///|   Type = 8    | Chunk  Flags  |      Length = 4               |
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///+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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#[derive(Default, Debug, Clone)]
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pub(crate) struct ChunkShutdownAck;
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/// makes chunkShutdownAck printable
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impl fmt::Display for ChunkShutdownAck {
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    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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        write!(f, "{}", self.header())
17
    }
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}
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impl Chunk for ChunkShutdownAck {
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    fn header(&self) -> ChunkHeader {
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        ChunkHeader {
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            typ: CT_SHUTDOWN_ACK,
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            flags: 0,
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            value_length: self.value_length() as u16,
26
        }
27
    }
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    fn unmarshal(raw: &Bytes) -> Result<Self> {
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        let header = ChunkHeader::unmarshal(raw)?;
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        if header.typ != CT_SHUTDOWN_ACK {
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            return Err(Error::ErrChunkTypeNotShutdownAck);
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        }
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        Ok(ChunkShutdownAck {})
37
    }
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    fn marshal_to(&self, writer: &mut BytesMut) -> Result<usize> {
40
        self.header().marshal_to(writer)?;
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        Ok(writer.len())
42
    }
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    fn check(&self) -> Result<()> {
45
        Ok(())
46
    }
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48
    fn value_length(&self) -> usize {
49
        0
50
    }
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    fn as_any(&self) -> &(dyn Any + Send + Sync) {
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        self
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    }
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}