psiphon-tunnel-core/replace/dtls/pkg/protocol/content.go

// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT

package protocol

// ContentType represents the IANA Registered ContentTypes
//
// https://tools.ietf.org/html/rfc4346#section-6.2.1
type ContentType uint8

// ContentType enums
const (
	ContentTypeChangeCipherSpec ContentType = 20
	ContentTypeAlert            ContentType = 21
	ContentTypeHandshake        ContentType = 22
	ContentTypeApplicationData  ContentType = 23
)

// Content is the top level distinguisher for a DTLS Datagram
type Content interface {
	ContentType() ContentType
	Marshal() ([]byte, error)
	Unmarshal(data []byte) error
}