1// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
 2// Use of this source code is governed by a BSD-style
 3// license that can be found in the LICENSE file.
 4
 5// +build !go1.8
 6
 7package websocket
 8
 9import "crypto/tls"
10
11// cloneTLSConfig clones all public fields except the fields
12// SessionTicketsDisabled and SessionTicketKey. This avoids copying the
13// sync.Mutex in the sync.Once and makes it safe to call cloneTLSConfig on a
14// config in active use.
15func cloneTLSConfig(cfg *tls.Config) *tls.Config {
16	if cfg == nil {
17		return &tls.Config{}
18	}
19	return &tls.Config{
20		Rand:                     cfg.Rand,
21		Time:                     cfg.Time,
22		Certificates:             cfg.Certificates,
23		NameToCertificate:        cfg.NameToCertificate,
24		GetCertificate:           cfg.GetCertificate,
25		RootCAs:                  cfg.RootCAs,
26		NextProtos:               cfg.NextProtos,
27		ServerName:               cfg.ServerName,
28		ClientAuth:               cfg.ClientAuth,
29		ClientCAs:                cfg.ClientCAs,
30		InsecureSkipVerify:       cfg.InsecureSkipVerify,
31		CipherSuites:             cfg.CipherSuites,
32		PreferServerCipherSuites: cfg.PreferServerCipherSuites,
33		ClientSessionCache:       cfg.ClientSessionCache,
34		MinVersion:               cfg.MinVersion,
35		MaxVersion:               cfg.MaxVersion,
36		CurvePreferences:         cfg.CurvePreferences,
37	}
38}