Actually embedd connStandard into connEventTraffic

mtglib/conns.go

 }
 
 type connEventTraffic struct {
-	net.Conn
+	connStandard
 
 	connID string
 	stream EventStream
 }
 
 func (c connEventTraffic) Read(b []byte) (int, error) {
-	n, err := c.Conn.Read(b)
+	n, err := c.connStandard.Read(b)
 
 	if n > 0 {
 		c.stream.Send(c.ctx, EventTraffic{
 		})
 	}
 
-	return n, err // nolint: wrapcheck
+	return n, err
 }
 
 func (c connEventTraffic) Write(b []byte) (int, error) {
-	n, err := c.Conn.Write(b)
+	n, err := c.connStandard.Write(b)
 
 	if n > 0 {
 		c.stream.Send(c.ctx, EventTraffic{
 		})
 	}
 
-	return n, err // nolint: wrapcheck
+	return n, err
 }

mtglib/proxy.go

 	}
 
 	ctx.telegramConn = connEventTraffic{
-		Conn: connStandard{
+		connStandard: connStandard{
 			conn:        conn,
 			idleTimeout: p.idleTimeout,
 		},