Finalmask: Add XDNS (relies mKCP, like DNSTT), header-*, mkcp-* (#5560)

And https://github.com/XTLS/Xray-core/pull/5560#issuecomment-3825430761

transport/internet/finalmask/salamander/config.go

@@ -2,41 +2,15 @@ package salamander
 
 import (
 	"net"
-
-	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/transport/internet/finalmask/salamander/obfs"
 )
 
 func (c *Config) UDP() {
 }
 
-func (c *Config) WrapConnClient(raw net.Conn) (net.Conn, error) {
-	return raw, nil
+func (c *Config) WrapPacketConnClient(raw net.PacketConn, first bool, leaveSize int32, end bool) (net.PacketConn, error) {
+	return NewConnClient(c, raw, first, leaveSize)
 }
 
-func (c *Config) WrapConnServer(raw net.Conn) (net.Conn, error) {
-	return raw, nil
-}
-
-func (c *Config) WrapPacketConnClient(raw net.PacketConn) (net.PacketConn, error) {
-	ob, err := obfs.NewSalamanderObfuscator([]byte(c.Password))
-	if err != nil {
-		return nil, errors.New("salamander err").Base(err)
-	}
-	return obfs.WrapPacketConn(raw, ob), nil
-}
-
-func (c *Config) WrapPacketConnServer(raw net.PacketConn) (net.PacketConn, error) {
-	ob, err := obfs.NewSalamanderObfuscator([]byte(c.Password))
-	if err != nil {
-		return nil, errors.New("salamander err").Base(err)
-	}
-	return obfs.WrapPacketConn(raw, ob), nil
-}
-
-func (c *Config) Size() int {
-	return 0
-}
-
-func (c *Config) Serialize([]byte) {
+func (c *Config) WrapPacketConnServer(raw net.PacketConn, first bool, leaveSize int32, end bool) (net.PacketConn, error) {
+	return NewConnServer(c, raw, first, leaveSize)
 }