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| 1 | +// |
| 2 | +// DISCLAIMER |
| 3 | +// |
| 4 | +// Copyright 2024 ArangoDB GmbH, Cologne, Germany |
| 5 | +// |
| 6 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +// you may not use this file except in compliance with the License. |
| 8 | +// You may obtain a copy of the License at |
| 9 | +// |
| 10 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | +// |
| 12 | +// Unless required by applicable law or agreed to in writing, software |
| 13 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +// See the License for the specific language governing permissions and |
| 16 | +// limitations under the License. |
| 17 | +// |
| 18 | +// Copyright holder is ArangoDB GmbH, Cologne, Germany |
| 19 | +// |
| 20 | + |
| 21 | +package connection |
| 22 | + |
| 23 | +import ( |
| 24 | + "context" |
| 25 | + "crypto/tls" |
| 26 | + "net" |
| 27 | + "net/http" |
| 28 | + "time" |
| 29 | + |
| 30 | + "golang.org/x/net/http2" |
| 31 | +) |
| 32 | + |
| 33 | +func DefaultHTTPConfigurationWrapper(endpoint Endpoint, insecureSkipVerify bool) HttpConfiguration { |
| 34 | + mods := []Mod[HttpConfiguration]{ |
| 35 | + WithHTTPEndpoint(endpoint), |
| 36 | + } |
| 37 | + if insecureSkipVerify { |
| 38 | + mods = append(mods, WithHTTPTransport(DefaultHTTPTransportSettings, WithHTTPInsecureSkipVerify)) |
| 39 | + } else { |
| 40 | + mods = append(mods, WithHTTPTransport(DefaultHTTPTransportSettings)) |
| 41 | + } |
| 42 | + return New[HttpConfiguration](mods...) |
| 43 | +} |
| 44 | + |
| 45 | +func DefaultHTTP2ConfigurationWrapper(endpoint Endpoint, insecureSkipVerify bool) Http2Configuration { |
| 46 | + mods := []Mod[Http2Configuration]{ |
| 47 | + WithHTT2PEndpoint(endpoint), |
| 48 | + } |
| 49 | + if insecureSkipVerify { |
| 50 | + mods = append(mods, WithHTTP2Transport(DefaultHTTP2TransportSettings, WithHTTP2InsecureSkipVerify)) |
| 51 | + } else { |
| 52 | + mods = append(mods, WithHTTP2Transport(DefaultHTTP2TransportSettings)) |
| 53 | + } |
| 54 | + return New[Http2Configuration](mods...) |
| 55 | +} |
| 56 | + |
| 57 | +type Mod[T any] func(in *T) |
| 58 | + |
| 59 | +func New[T any](mods ...Mod[T]) T { |
| 60 | + var h T |
| 61 | + for _, mod := range mods { |
| 62 | + mod(&h) |
| 63 | + } |
| 64 | + return h |
| 65 | +} |
| 66 | + |
| 67 | +func WithHTTPEndpoint(endpoint Endpoint) Mod[HttpConfiguration] { |
| 68 | + return func(in *HttpConfiguration) { |
| 69 | + in.Endpoint = endpoint |
| 70 | + } |
| 71 | +} |
| 72 | + |
| 73 | +func WithHTT2PEndpoint(endpoint Endpoint) Mod[Http2Configuration] { |
| 74 | + return func(in *Http2Configuration) { |
| 75 | + in.Endpoint = endpoint |
| 76 | + } |
| 77 | +} |
| 78 | + |
| 79 | +func WithHTTPTransport(mods ...Mod[http.Transport]) Mod[HttpConfiguration] { |
| 80 | + return func(in *HttpConfiguration) { |
| 81 | + t := New[http.Transport](mods...) |
| 82 | + in.Transport = &t |
| 83 | + } |
| 84 | +} |
| 85 | + |
| 86 | +func WithHTTP2Transport(mods ...Mod[http2.Transport]) Mod[Http2Configuration] { |
| 87 | + return func(in *Http2Configuration) { |
| 88 | + t := New[http2.Transport](mods...) |
| 89 | + in.Transport = &t |
| 90 | + } |
| 91 | +} |
| 92 | + |
| 93 | +func WithHTTPInsecureSkipVerify(in *http.Transport) { |
| 94 | + if in.TLSClientConfig == nil { |
| 95 | + in.TLSClientConfig = &tls.Config{} |
| 96 | + } |
| 97 | + in.TLSClientConfig.InsecureSkipVerify = true |
| 98 | +} |
| 99 | + |
| 100 | +func WithHTTP2InsecureSkipVerify(in *http2.Transport) { |
| 101 | + if in.TLSClientConfig == nil { |
| 102 | + in.TLSClientConfig = &tls.Config{} |
| 103 | + } |
| 104 | + in.TLSClientConfig.InsecureSkipVerify = true |
| 105 | + in.AllowHTTP = true |
| 106 | + |
| 107 | + in.DialTLSContext = func(ctx context.Context, network, addr string, cfg *tls.Config) (net.Conn, error) { |
| 108 | + // Use net.Dial for plain TCP connection (h2c) |
| 109 | + return net.DialTimeout(network, addr, 30*time.Second) |
| 110 | + } |
| 111 | +} |
| 112 | + |
| 113 | +func DefaultHTTPTransportSettings(in *http.Transport) { |
| 114 | + in.Proxy = http.ProxyFromEnvironment |
| 115 | + in.DialContext = (&net.Dialer{ |
| 116 | + Timeout: 30 * time.Second, |
| 117 | + KeepAlive: 90 * time.Second, |
| 118 | + }).DialContext |
| 119 | + in.MaxIdleConns = 100 |
| 120 | + in.IdleConnTimeout = 90 * time.Second |
| 121 | + in.TLSHandshakeTimeout = 10 * time.Second |
| 122 | + in.ExpectContinueTimeout = 1 * time.Second |
| 123 | + |
| 124 | + if in.TLSClientConfig == nil { |
| 125 | + in.TLSClientConfig = &tls.Config{} |
| 126 | + } |
| 127 | + |
| 128 | + in.TLSClientConfig = &tls.Config{ |
| 129 | + MinVersion: tls.VersionTLS12, |
| 130 | + } |
| 131 | +} |
| 132 | + |
| 133 | +func DefaultHTTP2TransportSettings(in *http2.Transport) { |
| 134 | + in.IdleConnTimeout = 90 * time.Second |
| 135 | + |
| 136 | + if in.TLSClientConfig == nil { |
| 137 | + in.TLSClientConfig = &tls.Config{} |
| 138 | + } |
| 139 | + in.TLSClientConfig = &tls.Config{ |
| 140 | + MinVersion: tls.VersionTLS12, |
| 141 | + InsecureSkipVerify: false, |
| 142 | + } |
| 143 | +} |
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