/
transport.go
339 lines (304 loc) · 8.6 KB
/
transport.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
package upstream
import (
"context"
"crypto/tls"
"net"
"net/http"
"strings"
"sync"
"time"
"golang.org/x/net/http2"
"github.com/moonrhythm/parapet/pkg/header"
)
const (
defaultDialTimeout = 5 * time.Second
defaultMaxIdleConns = 32
defaultIdleConnTimeout = 10 * time.Minute
defaultResponseHeaderTimeout = time.Minute
defaultTLSHandshakeTimeout = 5 * time.Second
)
// H2CTransport type
//
//nolint:govet
type H2CTransport struct {
once sync.Once
dialer *net.Dialer
h2 *http2.Transport
h1 *http.Transport
HTTP2Transport *http2.Transport
HTTPTransport *http.Transport
}
// RoundTrip implement http.RoundTripper
func (t *H2CTransport) RoundTrip(r *http.Request) (*http.Response, error) {
t.once.Do(func() {
t.dialer = &net.Dialer{
Timeout: defaultDialTimeout,
KeepAlive: defaultIdleConnTimeout,
}
t.h2 = t.HTTP2Transport
if t.h2 == nil {
t.h2 = &http2.Transport{
DisableCompression: true,
}
}
t.h2.AllowHTTP = true
t.h2.DialTLSContext = func(ctx context.Context, network, addr string, _ *tls.Config) (net.Conn, error) {
return t.dialer.DialContext(ctx, network, addr)
}
t.h1 = t.HTTPTransport
if t.h1 == nil {
t.h1 = &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: t.dialer.DialContext,
DisableCompression: true,
MaxIdleConns: defaultMaxIdleConns,
MaxIdleConnsPerHost: defaultMaxIdleConns,
IdleConnTimeout: defaultIdleConnTimeout,
ResponseHeaderTimeout: defaultResponseHeaderTimeout,
}
}
})
r.URL.Scheme = "http"
// Currently Go does not support RFC 8441, downgrade to http1
if header.Exists(r.Header, header.Upgrade) {
return t.h1.RoundTrip(r)
}
return t.h2.RoundTrip(r)
}
// HTTPTransport type
//
//nolint:govet
type HTTPTransport struct {
once sync.Once
h *http.Transport
DialTimeout time.Duration
TCPKeepAlive time.Duration
DisableKeepAlives bool
MaxConn int
MaxIdleConns int
IdleConnTimeout time.Duration
ExpectContinueTimeout time.Duration
ResponseHeaderTimeout time.Duration
}
// RoundTrip implement http.RoundTripper
func (t *HTTPTransport) RoundTrip(r *http.Request) (*http.Response, error) {
t.once.Do(func() {
if t.DialTimeout == 0 {
t.DialTimeout = defaultDialTimeout
}
if t.MaxIdleConns == 0 {
t.MaxIdleConns = defaultMaxIdleConns
}
if t.IdleConnTimeout == 0 {
t.IdleConnTimeout = defaultIdleConnTimeout
}
if t.ResponseHeaderTimeout == 0 {
t.ResponseHeaderTimeout = defaultResponseHeaderTimeout
}
t.h = &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: t.DialTimeout,
KeepAlive: t.TCPKeepAlive,
}).DialContext,
DisableKeepAlives: t.DisableKeepAlives,
MaxConnsPerHost: t.MaxConn,
MaxIdleConnsPerHost: t.MaxIdleConns,
IdleConnTimeout: t.IdleConnTimeout,
ExpectContinueTimeout: t.ExpectContinueTimeout,
DisableCompression: true,
ResponseHeaderTimeout: t.ResponseHeaderTimeout,
}
})
r.URL.Scheme = "http"
return t.h.RoundTrip(r)
}
// HTTPSTransport type
//
//nolint:govet
type HTTPSTransport struct {
once sync.Once
h *http.Transport
DialTimeout time.Duration
TCPKeepAlive time.Duration
DisableKeepAlives bool
MaxConn int
MaxIdleConns int
IdleConnTimeout time.Duration
ExpectContinueTimeout time.Duration
ResponseHeaderTimeout time.Duration
TLSClientConfig *tls.Config
}
// RoundTrip implement http.RoundTripper
func (t *HTTPSTransport) RoundTrip(r *http.Request) (*http.Response, error) {
t.once.Do(func() {
if t.DialTimeout == 0 {
t.DialTimeout = defaultDialTimeout
}
if t.MaxIdleConns == 0 {
t.MaxIdleConns = defaultMaxIdleConns
}
if t.IdleConnTimeout == 0 {
t.IdleConnTimeout = defaultIdleConnTimeout
}
if t.ResponseHeaderTimeout == 0 {
t.ResponseHeaderTimeout = defaultResponseHeaderTimeout
}
if t.TLSClientConfig == nil {
t.TLSClientConfig = &tls.Config{
InsecureSkipVerify: true,
}
}
t.h = &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: t.DialTimeout,
KeepAlive: t.TCPKeepAlive,
}).DialContext,
TLSClientConfig: t.TLSClientConfig,
DisableKeepAlives: t.DisableKeepAlives,
MaxConnsPerHost: t.MaxConn,
MaxIdleConnsPerHost: t.MaxIdleConns,
IdleConnTimeout: t.IdleConnTimeout,
TLSHandshakeTimeout: defaultTLSHandshakeTimeout,
ExpectContinueTimeout: t.ExpectContinueTimeout,
DisableCompression: true,
ResponseHeaderTimeout: t.ResponseHeaderTimeout,
}
})
r.URL.Scheme = "https"
return t.h.RoundTrip(r)
}
// UnixTransport type
//
//nolint:govet
type UnixTransport struct {
once sync.Once
h *http.Transport
DisableKeepAlives bool
MaxIdleConns int
IdleConnTimeout time.Duration
ExpectContinueTimeout time.Duration
ResponseHeaderTimeout time.Duration
}
// RoundTrip implement http.RoundTripper
func (t *UnixTransport) RoundTrip(r *http.Request) (*http.Response, error) {
t.once.Do(func() {
if t.MaxIdleConns == 0 {
t.MaxIdleConns = defaultMaxIdleConns
}
if t.IdleConnTimeout == 0 {
t.IdleConnTimeout = defaultIdleConnTimeout
}
if t.ResponseHeaderTimeout == 0 {
t.ResponseHeaderTimeout = defaultResponseHeaderTimeout
}
d := &net.Dialer{}
t.h = &http.Transport{
DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
return d.DialContext(ctx, "unix", strings.TrimSuffix(addr, ":80"))
},
DisableKeepAlives: t.DisableKeepAlives,
MaxIdleConnsPerHost: t.MaxIdleConns,
IdleConnTimeout: t.IdleConnTimeout,
ExpectContinueTimeout: t.ExpectContinueTimeout,
DisableCompression: true,
ResponseHeaderTimeout: t.ResponseHeaderTimeout,
}
})
r.URL.Scheme = "http"
r.URL.Host = "/" + r.URL.Host
return t.h.RoundTrip(r)
}
// Transport does RoundTrip dynamically from request's scheme
//
//nolint:govet
type Transport struct {
once sync.Once
dialer *net.Dialer
httpTr *http.Transport
h2cTr *http2.Transport
unixTr *http.Transport
DialTimeout time.Duration
TCPKeepAlive time.Duration
DisableKeepAlives bool
MaxConn int
MaxIdleConns int
IdleConnTimeout time.Duration
ExpectContinueTimeout time.Duration
ResponseHeaderTimeout time.Duration
DisableCompression bool
TLSClientConfig *tls.Config
}
// RoundTrip implement http.RoundTripper
func (t *Transport) RoundTrip(r *http.Request) (*http.Response, error) {
t.once.Do(func() {
if t.DialTimeout == 0 {
t.DialTimeout = defaultDialTimeout
}
if t.MaxIdleConns == 0 {
t.MaxIdleConns = defaultMaxIdleConns
}
if t.IdleConnTimeout == 0 {
t.IdleConnTimeout = defaultIdleConnTimeout
}
if t.ResponseHeaderTimeout == 0 {
t.ResponseHeaderTimeout = defaultResponseHeaderTimeout
}
if t.TLSClientConfig == nil {
t.TLSClientConfig = &tls.Config{
InsecureSkipVerify: true,
}
}
t.dialer = &net.Dialer{
Timeout: t.DialTimeout,
KeepAlive: t.TCPKeepAlive,
}
t.httpTr = &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: t.dialer.DialContext,
TLSClientConfig: t.TLSClientConfig,
DisableKeepAlives: t.DisableKeepAlives,
MaxConnsPerHost: t.MaxConn,
MaxIdleConnsPerHost: t.MaxIdleConns,
IdleConnTimeout: t.IdleConnTimeout,
ExpectContinueTimeout: t.ExpectContinueTimeout,
DisableCompression: t.DisableCompression,
ResponseHeaderTimeout: t.ResponseHeaderTimeout,
}
t.h2cTr = &http2.Transport{
AllowHTTP: true,
DisableCompression: t.DisableCompression,
DialTLSContext: func(ctx context.Context, network, addr string, _ *tls.Config) (net.Conn, error) {
return t.dialer.DialContext(ctx, network, addr)
},
}
t.unixTr = &http.Transport{
DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
return t.dialer.DialContext(ctx, "unix", strings.TrimSuffix(addr, ":80"))
},
DisableKeepAlives: t.DisableKeepAlives,
MaxIdleConnsPerHost: t.MaxIdleConns,
IdleConnTimeout: t.IdleConnTimeout,
ExpectContinueTimeout: t.ExpectContinueTimeout,
DisableCompression: t.DisableCompression,
ResponseHeaderTimeout: t.ResponseHeaderTimeout,
}
})
var tr http.RoundTripper
switch r.URL.Scheme {
default:
tr = t.httpTr
case "h2c":
tr = t.h2cTr
r.URL.Scheme = "http"
// Currently Go does not support RFC 8441, downgrade to http1
if header.Exists(r.Header, header.Upgrade) {
tr = t.httpTr
}
case "unix":
tr = t.unixTr
r.URL.Scheme = "http"
}
return tr.RoundTrip(r)
}