1// +build go1.7 go1.8
2
3/*
4 * MinIO Go Library for Amazon S3 Compatible Cloud Storage
5 * Copyright 2017-2018 MinIO, Inc.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 *     http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19
20package minio
21
22import (
23	"crypto/tls"
24	"net"
25	"net/http"
26	"time"
27)
28
29// DefaultTransport - this default transport is similar to
30// http.DefaultTransport but with additional param  DisableCompression
31// is set to true to avoid decompressing content with 'gzip' encoding.
32var DefaultTransport = func(secure bool) (http.RoundTripper, error) {
33	tr := &http.Transport{
34		Proxy: http.ProxyFromEnvironment,
35		DialContext: (&net.Dialer{
36			Timeout:   30 * time.Second,
37			KeepAlive: 30 * time.Second,
38		}).DialContext,
39		MaxIdleConns:          1024,
40		MaxIdleConnsPerHost:   1024,
41		IdleConnTimeout:       90 * time.Second,
42		TLSHandshakeTimeout:   10 * time.Second,
43		ExpectContinueTimeout: 1 * time.Second,
44		// Set this value so that the underlying transport round-tripper
45		// doesn't try to auto decode the body of objects with
46		// content-encoding set to `gzip`.
47		//
48		// Refer:
49		//    https://golang.org/src/net/http/transport.go?h=roundTrip#L1843
50		DisableCompression: true,
51	}
52
53	if secure {
54		tr.TLSClientConfig = &tls.Config{
55			// Can't use SSLv3 because of POODLE and BEAST
56			// Can't use TLSv1.0 because of POODLE and BEAST using CBC cipher
57			// Can't use TLSv1.1 because of RC4 cipher usage
58			MinVersion: tls.VersionTLS12,
59		}
60	}
61	return tr, nil
62}
63