fix...

.gitignore

@@ -1 +1,3 @@
 .idea
+token.tok
+example-proxy

example-proxy.go

@@ -7,21 +7,21 @@ import (
 	"sync"
 	"time"
 
+	"encoding/json"
+	"fmt"
 	"github.com/akmalfairuz/legacy-version/legacyver"
 	"github.com/pelletier/go-toml"
 	"github.com/sandertv/gophertunnel/minecraft"
 	"github.com/sandertv/gophertunnel/minecraft/auth"
 	"golang.org/x/oauth2"
+	"os/signal"
+	"syscall"
 )
 
 // The following program implements a proxy that forwards players from one local address to a remote address.
 func main() {
 	config := readConfig()
-	token, err := auth.RequestLiveToken()
-	if err != nil {
-		panic(err)
-	}
-	src := auth.RefreshTokenSource(token)
+	src := tokenSource()
 
 	p, err := minecraft.NewForeignStatusProvider(config.Connection.RemoteAddress)
 	if err != nil {
@@ -98,6 +98,12 @@ func handleConn(conn *minecraft.Conn, listener *minecraft.Listener, config confi
 				}
 				return
 			}
+			fmt.Println(pk.ID())
+			time.Sleep(time.Millisecond * 1000)
+			if pk.ID() == 498 {
+				fmt.Println("skipping packet 498")
+				continue
+			}
 			if err := conn.WritePacket(pk); err != nil {
 				return
 			}
@@ -144,3 +150,41 @@ func readConfig() config {
 	}
 	return c
 }
+
+// tokenSource returns a token source for using with a gophertunnel client. It either reads it from the
+// token.tok file if cached or requests logging in with a device code.
+func tokenSource() oauth2.TokenSource {
+	check := func(err error) {
+		if err != nil {
+			panic(err)
+		}
+	}
+	token := new(oauth2.Token)
+	tokenData, err := os.ReadFile("token.tok")
+	if err == nil {
+		_ = json.Unmarshal(tokenData, token)
+	} else {
+		token, err = auth.RequestLiveToken()
+		check(err)
+	}
+	src := auth.RefreshTokenSource(token)
+	_, err = src.Token()
+	if err != nil {
+		// The cached refresh token expired and can no longer be used to obtain a new token. We require the
+		// user to log in again and use that token instead.
+		token, err = auth.RequestLiveToken()
+		check(err)
+		src = auth.RefreshTokenSource(token)
+	}
+	go func() {
+		c := make(chan os.Signal, 3)
+		signal.Notify(c, syscall.SIGTERM, syscall.SIGINT)
+		<-c
+
+		tok, _ := src.Token()
+		b, _ := json.Marshal(tok)
+		_ = os.WriteFile("token.tok", b, 0644)
+		os.Exit(0)
+	}()
+	return src
+}

go.mod

@@ -33,4 +33,4 @@ require (
 	golang.org/x/text v0.30.0 // indirect
 )
 
-replace github.com/sandertv/gophertunnel => github.com/cooldogedev/gophertunnel v0.0.0-20251210050513-6e8700778c34
+replace github.com/sandertv/gophertunnel => ../../venitydf/gophertunnel

legacyver/all.go

@@ -21,6 +21,7 @@ var (
 // must be set to true if you're using Dragonfly.
 func All(dragonflyMapping bool) []minecraft.Protocol {
 	return []minecraft.Protocol{
+		New859(dragonflyMapping),
 		New844(dragonflyMapping),
 		New827(dragonflyMapping),
 		New819(dragonflyMapping),

legacyver/legacypacket/command_output.go

@@ -52,7 +52,11 @@ func (pk *CommandOutput) Marshal(io protocol.IO) {
 	} else {
 		v, _ := pk.DataSet.Value()
 		io.String(&v)
+		if v != "" {
 			pk.DataSet = protocol.Option(v)
+		} else {
+			pk.DataSet = protocol.Optional[string]{}
+		}
 	}
 }
 

legacyver/legacypacket/interact.go

@@ -32,9 +32,13 @@ func (pk *Interact) Marshal(io protocol.IO) {
 	io.Varuint64(&pk.TargetEntityRuntimeID)
 	if proto.IsProtoGTE(io, proto.ID898) {
 		protocol.OptionalFunc(io, &pk.Position, io.Vec3)
-	} else {
+	} else if pk.ActionType == packet.InteractActionMouseOverEntity || pk.ActionType == packet.InteractActionLeaveVehicle {
 		pos, _ := pk.Position.Value()
 		io.Vec3(&pos)
+		if pos != (mgl32.Vec3{}) {
 			pk.Position = protocol.Option(pos)
+		} else {
+			pk.Position = protocol.Optional[mgl32.Vec3]{}
+		}
 	}
 }

legacyver/legacypacket/text.go

@@ -73,6 +73,7 @@ func (pk *Text) Marshal(io protocol.IO) {
 			categoryType = protocol.TextCategoryMessageWithParameters
 		}
 		io.TextCategory(&categoryType)
+		io.Uint8(&pk.TextType)
 	}
 	switch pk.TextType {
 	case TextTypeChat, TextTypeWhisper, TextTypeAnnouncement:
@@ -84,6 +85,11 @@ func (pk *Text) Marshal(io protocol.IO) {
 		io.String(&pk.Message)
 		protocol.FuncSlice(io, &pk.Parameters, io.String)
 	}
+	if proto.IsProtoGTE(io, proto.ID898) {
+		if len(pk.Message) == 0 {
+			io.InvalidValue(pk.Message, "message", "string cannot be empty")
+		}
+	}
 	io.String(&pk.XUID)
 	io.String(&pk.PlatformChatID)
 	if proto.IsProtoGTE(io, proto.ID685) {
@@ -92,7 +98,11 @@ func (pk *Text) Marshal(io protocol.IO) {
 		} else {
 			v, _ := pk.FilteredMessage.Value()
 			io.String(&v)
+			if v != "" {
 				pk.FilteredMessage = protocol.Option(v)
+			} else {
+				pk.FilteredMessage = protocol.Optional[string]{}
+			}
 		}
 	}
 }

legacyver/proto/container.go

@@ -28,11 +28,13 @@ func (x *FullContainerName) Marshal(r protocol.IO) {
 	r.Uint8(&x.ContainerID)
 	if IsProtoGTE(r, ID729) {
 		protocol.OptionalFunc(r, &x.DynamicContainerID, r.Uint32)
-	} else if IsProtoGTE(r, 712) {
+	} else if IsProtoGTE(r, ID712) {
 		dynamicContainerID, _ := x.DynamicContainerID.Value()
 		r.Uint32(&dynamicContainerID)
 		if dynamicContainerID != 0 {
 			x.DynamicContainerID = protocol.Option(dynamicContainerID)
+		} else {
+			x.DynamicContainerID = protocol.Optional[uint32]{}
 		}
 	}
 }