forward non-HTTP traffic based on host

limiter/conn/wrapper/conn.go

@@ -6,6 +6,7 @@ import (
 	"syscall"
 
 	limiter "github.com/go-gost/core/limiter/conn"
+	"github.com/go-gost/core/metadata"
 )
 
 var (
@@ -41,3 +42,10 @@ func (c *serverConn) Close() error {
 	c.limiter.Allow(-1)
 	return c.Conn.Close()
 }
+
+func (c *serverConn) Metadata() metadata.Metadata {
+	if md, ok := c.Conn.(metadata.Metadatable); ok {
+		return md.Metadata()
+	}
+	return nil
+}

limiter/traffic/wrapper/conn.go

@@ -10,6 +10,7 @@ import (
 	"time"
 
 	limiter "github.com/go-gost/core/limiter/traffic"
+	"github.com/go-gost/core/metadata"
 	xnet "github.com/go-gost/x/internal/net"
 	"github.com/go-gost/x/internal/net/udp"
 	"github.com/patrickmn/go-cache"
@@ -118,6 +119,13 @@ func (c *serverConn) SyscallConn() (rc syscall.RawConn, err error) {
 	return
 }
 
+func (c *serverConn) Metadata() metadata.Metadata {
+	if md, ok := c.Conn.(metadata.Metadatable); ok {
+		return md.Metadata()
+	}
+	return nil
+}
+
 type packetConn struct {
 	net.PacketConn
 	limiter   limiter.TrafficLimiter
@@ -217,6 +225,13 @@ func (c *packetConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	return c.PacketConn.WriteTo(p, addr)
 }
 
+func (c *packetConn) Metadata() metadata.Metadata {
+	if md, ok := c.PacketConn.(metadata.Metadatable); ok {
+		return md.Metadata()
+	}
+	return nil
+}
+
 type udpConn struct {
 	net.PacketConn
 	limiter   limiter.TrafficLimiter