forward non-HTTP traffic based on host

connector/relay/conn.go

@@ -10,6 +10,7 @@ import (
 	"net"
 	"sync"
 
+	mdata "github.com/go-gost/core/metadata"
 	"github.com/go-gost/relay"
 )
 
@@ -121,6 +122,7 @@ type bindConn struct {
 	net.Conn
 	localAddr  net.Addr
 	remoteAddr net.Addr
+	md         mdata.Metadata
 }
 
 func (c *bindConn) LocalAddr() net.Addr {
@@ -130,3 +132,8 @@ func (c *bindConn) LocalAddr() net.Addr {
 func (c *bindConn) RemoteAddr() net.Addr {
 	return c.remoteAddr
 }
+
+// Metadata implements metadata.Metadatable interface.
+func (c *bindConn) Metadata() mdata.Metadata {
+	return c.md
+}