Merge VLESS to library

transport/vless/protocol.go

@@ -1,98 +0,0 @@
-package vless
-
-import (
-	"encoding/binary"
-	"io"
-
-	"github.com/sagernet/sing-vmess"
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-	"github.com/sagernet/sing/common/rw"
-)
-
-const Version = 0
-
-type Request struct {
-	UUID        []byte
-	Command     byte
-	Destination M.Socksaddr
-}
-
-func WriteRequest(writer io.Writer, request Request, payload []byte) error {
-	var requestLen int
-	requestLen += 1  // version
-	requestLen += 16 // uuid
-	requestLen += 1  // protobuf length
-	requestLen += 1  // command
-	if request.Command != vmess.CommandMux {
-		requestLen += vmess.AddressSerializer.AddrPortLen(request.Destination)
-	}
-	requestLen += len(payload)
-	_buffer := buf.StackNewSize(requestLen)
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	common.Must(
-		buffer.WriteByte(Version),
-		common.Error(buffer.Write(request.UUID)),
-		buffer.WriteByte(0),
-		buffer.WriteByte(request.Command),
-	)
-
-	if request.Command != vmess.CommandMux {
-		common.Must(vmess.AddressSerializer.WriteAddrPort(buffer, request.Destination))
-	}
-
-	common.Must1(buffer.Write(payload))
-	return common.Error(writer.Write(buffer.Bytes()))
-}
-
-func WritePacketRequest(writer io.Writer, request Request, payload []byte) error {
-	var requestLen int
-	requestLen += 1  // version
-	requestLen += 16 // uuid
-	requestLen += 1  // protobuf length
-	requestLen += 1  // command
-	requestLen += vmess.AddressSerializer.AddrPortLen(request.Destination)
-	if len(payload) > 0 {
-		requestLen += 2
-		requestLen += len(payload)
-	}
-	_buffer := buf.StackNewSize(requestLen)
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	common.Must(
-		buffer.WriteByte(Version),
-		common.Error(buffer.Write(request.UUID)),
-		buffer.WriteByte(0),
-		buffer.WriteByte(vmess.CommandUDP),
-		vmess.AddressSerializer.WriteAddrPort(buffer, request.Destination),
-		binary.Write(buffer, binary.BigEndian, uint16(len(payload))),
-		common.Error(buffer.Write(payload)),
-	)
-	return common.Error(writer.Write(buffer.Bytes()))
-}
-
-func ReadResponse(reader io.Reader) error {
-	version, err := rw.ReadByte(reader)
-	if err != nil {
-		return err
-	}
-	if version != Version {
-		return E.New("unknown version: ", version)
-	}
-	protobufLength, err := rw.ReadByte(reader)
-	if err != nil {
-		return err
-	}
-	if protobufLength > 0 {
-		err = rw.SkipN(reader, int(protobufLength))
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}