remove unnecessary conn

listener/tun/conn.go

@@ -0,0 +1,60 @@
+package tun
+
+import (
+	"errors"
+	"net"
+	"time"
+
+	mdata "github.com/go-gost/gost/v3/pkg/metadata"
+	"github.com/songgao/water"
+)
+
+type conn struct {
+	ifce  *water.Interface
+	laddr net.Addr
+	raddr net.Addr
+}
+
+func (c *conn) Read(b []byte) (n int, err error) {
+	return c.ifce.Read(b)
+}
+
+func (c *conn) Write(b []byte) (n int, err error) {
+	return c.ifce.Write(b)
+}
+
+func (c *conn) LocalAddr() net.Addr {
+	return c.laddr
+}
+
+func (c *conn) RemoteAddr() net.Addr {
+	return c.raddr
+}
+
+func (c *conn) SetDeadline(t time.Time) error {
+	return &net.OpError{Op: "set", Net: "tun", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
+}
+
+func (c *conn) SetReadDeadline(t time.Time) error {
+	return &net.OpError{Op: "set", Net: "tun", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
+}
+
+func (c *conn) SetWriteDeadline(t time.Time) error {
+	return &net.OpError{Op: "set", Net: "tun", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
+}
+
+func (c *conn) Close() (err error) {
+	return c.ifce.Close()
+}
+
+type metadataConn struct {
+	net.Conn
+	md mdata.Metadata
+}
+
+func withMetadata(md mdata.Metadata, c net.Conn) net.Conn {
+	return &metadataConn{
+		Conn: c,
+		md:   md,
+	}
+}

listener/tun/listener.go

@@ -3,11 +3,11 @@ package tun
 import (
 	"net"
 
+	"github.com/go-gost/gost/pkg/common/metrics"
 	"github.com/go-gost/gost/v3/pkg/listener"
 	"github.com/go-gost/gost/v3/pkg/logger"
-	md "github.com/go-gost/gost/v3/pkg/metadata"
+	mdata "github.com/go-gost/gost/v3/pkg/metadata"
 	"github.com/go-gost/gost/v3/pkg/registry"
-	tun_util "github.com/go-gost/x/internal/util/tun"
 )
 
 func init() {
@@ -34,7 +34,7 @@ func NewListener(opts ...listener.Option) listener.Listener {
 	}
 }
 
-func (l *tunListener) Init(md md.Metadata) (err error) {
+func (l *tunListener) Init(md mdata.Metadata) (err error) {
 	if err = l.parseMetadata(md); err != nil {
 		return
 	}
@@ -64,9 +64,18 @@ func (l *tunListener) Init(md md.Metadata) (err error) {
 	l.cqueue = make(chan net.Conn, 1)
 	l.closed = make(chan struct{})
 
-	conn := tun_util.NewConn(l.md.config, ifce, l.addr, &net.IPAddr{IP: ip})
+	var c net.Conn
+	c = &conn{
+		ifce:  ifce,
+		laddr: l.addr,
+		raddr: &net.IPAddr{IP: ip},
+	}
+	c = metrics.WrapConn(l.options.Service, c)
+	c = withMetadata(mdata.MapMetadata{
+		"config": l.md.config,
+	}, c)
 
-	l.cqueue <- conn
+	l.cqueue <- c
 
 	return
 }