message

package

v2.3.0-on-1 Latest Latest Go to latest Published: Apr 16, 2021 License: Apache-2.0 Imports: 7 Imported by: 0

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Repository

github.com/Onalytics/go-coap

Documentation ¶

Constants ¶

View Source

const (
	MESSAGE_LEN13_BASE = 13
	MESSAGE_LEN14_BASE = 269
	MESSAGE_LEN15_BASE = 65805
	MESSAGE_MAX_LEN    = 0x7fff0000 // Large number that works in 32-bit builds.
)

Variables ¶

View Source

var (
	ErrMessageTruncated      = errors.New("message is truncated")
	ErrMessageInvalidVersion = errors.New("message has invalid version")
)

Functions ¶

func GetMID ¶

func GetMID() uint16

GetMID generates a message id for UDP-coap

Types ¶

type Message ¶

type Message struct {
	Code codes.Code

	Token   message.Token
	Payload []byte

	MessageID uint16
	Type      Type

	Options message.Options //Options must be sorted by ID
}

TcpMessage is a CoAP MessageBase that can encode itself for Message transport.

func (Message) Marshal ¶

func (m Message) Marshal() ([]byte, error)

func (Message) MarshalTo ¶

func (m Message) MarshalTo(buf []byte) (int, error)

func (Message) Size ¶

func (m Message) Size() (int, error)

func (*Message) Unmarshal ¶

func (m *Message) Unmarshal(data []byte) (int, error)

type Type ¶

type Type uint8

Type represents the message type. It's only part of CoAP UDP messages. Reliable transports like TCP do not have a type.

const (
	// Confirmable messages require acknowledgements.
	Confirmable Type = 0
	// NonConfirmable messages do not require acknowledgements.
	NonConfirmable Type = 1
	// Acknowledgement is a message indicating a response to confirmable message.
	Acknowledgement Type = 2
	// Reset indicates a permanent negative acknowledgement.
	Reset Type = 3
)

func (Type) String ¶

func (t Type) String() string

Source Files ¶

View all Source files

Directories ¶

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