Add obfuscated2 server handshake

mtglib/conns.go

@@ -2,66 +2,20 @@ package mtglib
 
 import (
 	"context"
-	"fmt"
 	"net"
 	"time"
 )
 
-type connStandard struct {
-	conn        net.Conn
-	idleTimeout time.Duration
-}
-
-func (c connStandard) Read(b []byte) (int, error) {
-	if err := c.conn.SetReadDeadline(time.Now().Add(c.idleTimeout)); err != nil {
-		return 0, fmt.Errorf("cannot set read deadline: %w", err)
-	}
-
-	return c.conn.Read(b)
-}
-
-func (c connStandard) Write(b []byte) (int, error) {
-	if err := c.conn.SetWriteDeadline(time.Now().Add(c.idleTimeout)); err != nil {
-		return 0, fmt.Errorf("cannot set write deadline: %w", err)
-	}
-
-	return c.conn.Write(b)
-}
-
-func (c connStandard) Close() error {
-	return c.conn.Close()
-}
-
-func (c connStandard) LocalAddr() net.Addr {
-	return c.conn.LocalAddr()
-}
-
-func (c connStandard) RemoteAddr() net.Addr {
-	return c.conn.RemoteAddr()
-}
-
-func (c connStandard) SetDeadline(t time.Time) error {
-	return c.conn.SetDeadline(t)
-}
-
-func (c connStandard) SetReadDeadline(t time.Time) error {
-	return c.conn.SetReadDeadline(t)
-}
-
-func (c connStandard) SetWriteDeadline(t time.Time) error {
-	return c.conn.SetWriteDeadline(t)
-}
-
-type connEventTraffic struct {
-	connStandard
+type connTelegramTraffic struct {
+	net.Conn
 
 	connID string
 	stream EventStream
 	ctx    context.Context
 }
 
-func (c connEventTraffic) Read(b []byte) (int, error) {
-	n, err := c.connStandard.Read(b)
+func (c connTelegramTraffic) Read(b []byte) (int, error) {
+	n, err := c.Conn.Read(b)
 
 	if n > 0 {
 		c.stream.Send(c.ctx, EventTraffic{
@@ -75,8 +29,8 @@ func (c connEventTraffic) Read(b []byte) (int, error) {
 	return n, err
 }
 
-func (c connEventTraffic) Write(b []byte) (int, error) {
-	n, err := c.connStandard.Write(b)
+func (c connTelegramTraffic) Write(b []byte) (int, error) {
+	n, err := c.Conn.Write(b)
 
 	if n > 0 {
 		c.stream.Send(c.ctx, EventTraffic{