WTF is this

transport/trojan/service.go

@@ -2,6 +2,7 @@ package trojan
 
 import (
 	"context"
+	"encoding/binary"
 	"net"
 
 	"github.com/sagernet/sing/common/auth"
@@ -76,7 +77,8 @@ func (s *Service[K]) NewConnection(ctx context.Context, conn net.Conn, metadata
 		return E.Cause(err, "skip crlf")
 	}
 
-	command, err := rw.ReadByte(conn)
+	var command byte
+	err = binary.Read(conn, binary.BigEndian, &command)
 	if err != nil {
 		return E.Cause(err, "read command")
 	}