84 lines
2.4 KiB
Go
84 lines
2.4 KiB
Go
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// +build go1.7 go1.8
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/*
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* MinIO Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2017-2018 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package minio
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import (
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"crypto/tls"
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"crypto/x509"
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"io/ioutil"
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"net"
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"net/http"
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"os"
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"time"
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)
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// mustGetSystemCertPool - return system CAs or empty pool in case of error (or windows)
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func mustGetSystemCertPool() *x509.CertPool {
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pool, err := x509.SystemCertPool()
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if err != nil {
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return x509.NewCertPool()
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}
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return pool
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}
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// DefaultTransport - this default transport is similar to
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// http.DefaultTransport but with additional param DisableCompression
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// is set to true to avoid decompressing content with 'gzip' encoding.
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var DefaultTransport = func(secure bool) (*http.Transport, error) {
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tr := &http.Transport{
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Proxy: http.ProxyFromEnvironment,
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DialContext: (&net.Dialer{
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Timeout: 30 * time.Second,
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KeepAlive: 30 * time.Second,
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}).DialContext,
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MaxIdleConns: 256,
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MaxIdleConnsPerHost: 16,
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ResponseHeaderTimeout: time.Minute,
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IdleConnTimeout: time.Minute,
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TLSHandshakeTimeout: 10 * time.Second,
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ExpectContinueTimeout: 10 * time.Second,
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// Set this value so that the underlying transport round-tripper
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// doesn't try to auto decode the body of objects with
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// content-encoding set to `gzip`.
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//
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// Refer:
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// https://golang.org/src/net/http/transport.go?h=roundTrip#L1843
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DisableCompression: true,
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}
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if secure {
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tr.TLSClientConfig = &tls.Config{
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// Can't use SSLv3 because of POODLE and BEAST
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// Can't use TLSv1.0 because of POODLE and BEAST using CBC cipher
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// Can't use TLSv1.1 because of RC4 cipher usage
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MinVersion: tls.VersionTLS12,
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}
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if f := os.Getenv("SSL_CERT_FILE"); f != "" {
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rootCAs := mustGetSystemCertPool()
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data, err := ioutil.ReadFile(f)
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if err == nil {
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rootCAs.AppendCertsFromPEM(data)
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}
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tr.TLSClientConfig.RootCAs = rootCAs
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}
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}
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return tr, nil
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}
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