hysteria/pkg/core/protocol.go

package core

import (
	"time"
)

const (
	protocolVersion = uint8(2)
	protocolTimeout = 10 * time.Second

	closeErrorCodeGeneric  = 0
	closeErrorCodeProtocol = 1
	closeErrorCodeAuth     = 2
)

type transmissionRate struct {
	SendBPS uint64
	RecvBPS uint64
}

type clientHello struct {
	Rate    transmissionRate
	AuthLen uint16 `struc:"sizeof=Auth"`
	Auth    []byte
}

type serverHello struct {
	OK         bool
	Rate       transmissionRate
	MessageLen uint16 `struc:"sizeof=Message"`
	Message    string
}

type clientRequest struct {
	UDP     bool
	HostLen uint16 `struc:"sizeof=Host"`
	Host    string
	Port    uint16
}

type serverResponse struct {
	OK           bool
	UDPSessionID uint32
	MessageLen   uint16 `struc:"sizeof=Message"`
	Message      string
}

type udpMessage struct {
	SessionID uint32
	HostLen   uint16 `struc:"sizeof=Host"`
	Host      string
	Port      uint16
	DataLen   uint16 `struc:"sizeof=Data"`
	Data      []byte
}