/
udpproxy_direct_test.go
337 lines (284 loc) · 8.01 KB
/
udpproxy_direct_test.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
//go:build !wasm
// +build !wasm
package vnet
import (
"context"
"errors"
"fmt"
"net"
"sync"
"testing"
"time"
"github.com/pion/logging"
)
// The vnet client:
// 10.0.0.11:5787
// which proxy to real server:
// 192.168.1.10:8000
// We should get a reply if directly deliver to proxy.
func TestUDPProxyDirectDeliverTypical(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
var r0, r1, r2 error
defer func() {
if r0 != nil || r1 != nil || r2 != nil {
t.Errorf("fail for ctx=%v, r0=%v, r1=%v, r2=%v", ctx.Err(), r0, r1, r2)
}
}()
var wg sync.WaitGroup
defer wg.Wait()
// Timeout, fail
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
select {
case <-ctx.Done():
case <-time.After(time.Duration(*testTimeout) * time.Millisecond):
r2 = fmt.Errorf("timeout") // nolint:goerr113
}
}()
// For utest, we always proxy vnet packets to the random port we listen to.
mockServer := NewMockUDPEchoServer()
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
if err := mockServer.doMockUDPServer(ctx); err != nil {
r0 = err
}
}()
// Create a vent and proxy.
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
// When real server is ready, start the vnet test.
select {
case <-ctx.Done():
return
case <-mockServer.realServerReady.Done():
}
doVnetProxy := func() error {
router, err := NewRouter(&RouterConfig{
CIDR: "0.0.0.0/0",
LoggerFactory: logging.NewDefaultLoggerFactory(),
})
if err != nil {
return err
}
clientNetwork := NewNet(&NetConfig{
StaticIP: "10.0.0.11",
})
if err = router.AddNet(clientNetwork); err != nil {
return err
}
if err = router.Start(); err != nil {
return err
}
defer router.Stop() // nolint:errcheck
proxy, err := NewProxy(router)
if err != nil {
return err
}
defer proxy.Close() // nolint:errcheck
// For utest, mock the target real server.
proxy.mockRealServerAddr = mockServer.realServerAddr
// The real server address to proxy to.
// Note that for utest, we will proxy to a local address.
serverAddr, err := net.ResolveUDPAddr("udp4", "192.168.1.10:8000")
if err != nil {
return err
}
if err = proxy.Proxy(clientNetwork, serverAddr); err != nil { //nolint:contextcheck
return err
}
// Now, all packets from client, will be proxy to real server, vice versa.
client, err := clientNetwork.ListenPacket("udp4", "10.0.0.11:5787")
if err != nil {
return err
}
// When system quit, interrupt client.
selfKill, selfKillCancel := context.WithCancel(context.Background())
go func() {
<-ctx.Done()
selfKillCancel()
_ = client.Close()
}()
// Write by vnet client.
if _, err = client.WriteTo([]byte("Hello"), serverAddr); err != nil {
return err
}
buf := make([]byte, 1500)
if n, addr, err := client.ReadFrom(buf); err != nil { // nolint:gocritic,govet
if errors.Is(selfKill.Err(), context.Canceled) {
return nil
}
return err
} else if n != 5 || addr == nil {
return fmt.Errorf("n=%v, addr=%v", n, addr) // nolint:goerr113
} else if string(buf[:n]) != "Hello" { // nolint:goconst
return fmt.Errorf("data %v", buf[:n]) // nolint:goerr113
}
// Directly write, simulate the ARQ packet.
// We should got the echo packet also.
if _, err = proxy.Deliver(client.LocalAddr(), serverAddr, []byte("Hello")); err != nil {
return err
}
if n, addr, err := client.ReadFrom(buf); err != nil { // nolint:gocritic,govet
if errors.Is(selfKill.Err(), context.Canceled) {
return nil
}
return err
} else if n != 5 || addr == nil {
return fmt.Errorf("n=%v, addr=%v", n, addr) // nolint:goerr113
} else if string(buf[:n]) != "Hello" {
return fmt.Errorf("data %v", buf[:n]) // nolint:goerr113
}
return err
}
if err := doVnetProxy(); err != nil {
r1 = err
}
}()
}
// Error if deliver to invalid address.
func TestUDPProxyDirectDeliverBadCase(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
var r0, r1, r2 error
defer func() {
if r0 != nil || r1 != nil || r2 != nil {
t.Errorf("fail for ctx=%v, r0=%v, r1=%v, r2=%v", ctx.Err(), r0, r1, r2)
}
}()
var wg sync.WaitGroup
defer wg.Wait()
// Timeout, fail
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
select {
case <-ctx.Done():
case <-time.After(time.Duration(*testTimeout) * time.Millisecond):
r2 = fmt.Errorf("timeout") // nolint:goerr113
}
}()
// For utest, we always proxy vnet packets to the random port we listen to.
mockServer := NewMockUDPEchoServer()
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
if err := mockServer.doMockUDPServer(ctx); err != nil {
r0 = err
}
}()
// Create a vent and proxy.
wg.Add(1)
go func() {
defer wg.Done()
defer cancel()
// When real server is ready, start the vnet test.
select {
case <-ctx.Done():
return
case <-mockServer.realServerReady.Done():
}
doVnetProxy := func() error {
router, err := NewRouter(&RouterConfig{
CIDR: "0.0.0.0/0",
LoggerFactory: logging.NewDefaultLoggerFactory(),
})
if err != nil {
return err
}
clientNetwork := NewNet(&NetConfig{
StaticIP: "10.0.0.11",
})
if err = router.AddNet(clientNetwork); err != nil {
return err
}
if err = router.Start(); err != nil {
return err
}
defer router.Stop() // nolint:errcheck
proxy, err := NewProxy(router)
if err != nil {
return err
}
defer proxy.Close() // nolint:errcheck
// For utest, mock the target real server.
proxy.mockRealServerAddr = mockServer.realServerAddr
// The real server address to proxy to.
// Note that for utest, we will proxy to a local address.
serverAddr, err := net.ResolveUDPAddr("udp4", "192.168.1.10:8000")
if err != nil {
return err
}
if err = proxy.Proxy(clientNetwork, serverAddr); err != nil { //nolint:contextcheck
return err
}
// Now, all packets from client, will be proxy to real server, vice versa.
client, err := clientNetwork.ListenPacket("udp4", "10.0.0.11:5787")
if err != nil {
return err
}
// When system quit, interrupt client.
selfKill, selfKillCancel := context.WithCancel(context.Background())
go func() {
<-ctx.Done()
selfKillCancel()
_ = client.Close()
}()
// Write by vnet client.
if _, err = client.WriteTo([]byte("Hello"), serverAddr); err != nil {
return err
}
buf := make([]byte, 1500)
if n, addr, err := client.ReadFrom(buf); err != nil { // nolint:gocritic,govet
if errors.Is(selfKill.Err(), context.Canceled) {
return nil
}
return err
} else if n != 5 || addr == nil {
return fmt.Errorf("n=%v, addr=%v", n, addr) // nolint:goerr113
} else if string(buf[:n]) != "Hello" { // nolint:goconst
return fmt.Errorf("data %v", buf[:n]) // nolint:goerr113
}
// BadCase: Invalid address, error and ignore.
tcpAddr, err := net.ResolveTCPAddr("tcp4", "192.168.1.10:8000")
if err != nil {
return err
}
if _, err = proxy.Deliver(tcpAddr, serverAddr, []byte("Hello")); err == nil {
return fmt.Errorf("should err") // nolint:goerr113
}
// BadCase: Invalid target address, ignore.
udpAddr, err := net.ResolveUDPAddr("udp4", "10.0.0.12:5788")
if err != nil {
return err
}
if nn, err := proxy.Deliver(udpAddr, serverAddr, []byte("Hello")); err != nil { // nolint:govet
return err
} else if nn != 0 {
return fmt.Errorf("invalid %v", nn) // nolint:goerr113
}
// BadCase: Write on closed socket, error and ignore.
proxy.workers.Range(func(key, value interface{}) bool {
//nolint:forcetypeassert
value.(*aUDPProxyWorker).endpoints.Range(func(key, value interface{}) bool {
_ = value.(*net.UDPConn).Close() //nolint:forcetypeassert
return true
})
return true
})
if _, err = proxy.Deliver(client.LocalAddr(), serverAddr, []byte("Hello")); err == nil {
return fmt.Errorf("should error") // nolint:goerr113
}
return nil
}
if err := doVnetProxy(); err != nil {
r1 = err
}
}()
}