This repository has been archived by the owner on Feb 3, 2020. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 2
/
ttl.go
200 lines (175 loc) · 4.9 KB
/
ttl.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
// Copyright 2019 The Mangos Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package test
import (
"bytes"
"testing"
"time"
"nanomsg.org/go/mangos/v2"
)
// SetTTLZero tests that a given socket fails to set a TTL of zero.
func SetTTLZero(t *testing.T, f func() (mangos.Socket, error)) {
s, err := f()
if err != nil {
t.Errorf("Failed to make socket: %v", err)
return
}
defer s.Close()
err = s.SetOption(mangos.OptionTTL, 0)
switch err {
case mangos.ErrBadValue: // expected result
case nil:
t.Errorf("Negative test fail, permitted zero TTL")
default:
t.Errorf("Negative test fail (0), wrong error %v", err)
}
}
// SetTTLNegative tests that a given socket fails to set a negative TTL.
func SetTTLNegative(t *testing.T, f func() (mangos.Socket, error)) {
s, err := f()
if err != nil {
t.Errorf("Failed to make socket: %v", err)
return
}
defer s.Close()
err = s.SetOption(mangos.OptionTTL, -1)
switch err {
case mangos.ErrBadValue: // expected result
case nil:
t.Errorf("Negative test fail, permitted negative TTL")
default:
t.Errorf("Negative test fail (-1), wrong error %v", err)
}
}
// SetTTLTooBig tests that a given socket fails to set a very large TTL.
func SetTTLTooBig(t *testing.T, f func() (mangos.Socket, error)) {
s, err := f()
if err != nil {
t.Errorf("Failed to make socket: %v", err)
return
}
defer s.Close()
err = s.SetOption(mangos.OptionTTL, 256)
switch err {
case mangos.ErrBadValue: // expected result
case nil:
t.Errorf("Negative test fail, permitted too large TTL")
default:
t.Errorf("Negative test fail (256), wrong error %v", err)
}
}
// SetTTLNotInt tests that a given socket fails to set a non-integer TTL.
func SetTTLNotInt(t *testing.T, f func() (mangos.Socket, error)) {
s, err := f()
if err != nil {
t.Errorf("Failed to make socket: %v", err)
return
}
defer s.Close()
err = s.SetOption(mangos.OptionTTL, "garbage")
switch err {
case mangos.ErrBadValue: // expected result
case nil:
t.Errorf("Negative test fail, permitted non-int value")
default:
t.Errorf("Negative test fail (garbage), wrong error %v", err)
}
}
// SetTTL tests that we can set a valid TTL, and get the same value back.
func SetTTL(t *testing.T, f func() (mangos.Socket, error)) {
s, err := f()
if err != nil {
t.Errorf("Failed to make socket: %v", err)
return
}
defer s.Close()
err = s.SetOption(mangos.OptionTTL, 2)
if err != nil {
t.Errorf("Failed SetOption: %v", err)
return
}
v, err := s.GetOption(mangos.OptionTTL)
if err != nil {
t.Errorf("Failed GetOption: %v", err)
return
}
if val, ok := v.(int); !ok {
t.Errorf("Returned value not type int")
} else if val != 2 {
t.Errorf("Returned value %d not %d", val, 2)
}
}
// TTLDropTest is a generic test for dropping based on TTL expiration.
// F1 makes the Client socket, f2 makes the Server socket.
func TTLDropTest(t *testing.T,
cli func() (mangos.Socket, error),
srv func() (mangos.Socket, error),
rawcli func() (mangos.Socket, error),
rawsrv func() (mangos.Socket, error)) {
nhop := 3
clis := make([]mangos.Socket, 0, nhop)
srvs := make([]mangos.Socket, 0, nhop)
var addrs []string
for i := 0; i < nhop; i++ {
addrs = append(addrs, AddrTestInp())
}
for i := 0; i < nhop; i++ {
var fn func() (mangos.Socket, error)
if i == nhop-1 {
fn = srv
} else {
fn = rawsrv
}
s, err := fn()
MustSucceed(t, err)
MustNotBeNil(t, s)
defer s.Close()
MustSucceed(t, s.Listen(addrs[i]))
srvs = append(srvs, s)
}
for i := 0; i < nhop; i++ {
var fn func() (mangos.Socket, error)
if i == 0 {
fn = cli
} else {
fn = rawcli
}
s, err := fn()
MustSucceed(t, err)
MustNotBeNil(t, s)
defer s.Close()
MustSucceed(t, s.Dial(addrs[i]))
clis = append(clis, s)
}
// Now make the device chain
for i := 0; i < nhop-1; i++ {
MustSucceed(t, mangos.Device(srvs[i], clis[i+1]))
}
// Wait for the various connections to plumb up
time.Sleep(time.Millisecond * 100)
// At this point, we can issue requests on clis[0], and read them from
// srvs[nhop-1].
rq := clis[0]
rp := srvs[nhop-1]
MustSucceed(t, rp.SetOption(mangos.OptionRecvDeadline, time.Millisecond*100))
MustSucceed(t, rq.Send([]byte("GOOD")))
v, err := rp.Recv()
MustSucceed(t, err)
MustBeTrue(t, bytes.Equal(v, []byte("GOOD")))
// Now try setting the option.
MustSucceed(t, rp.SetOption(mangos.OptionTTL, nhop-1))
MustSucceed(t, rq.Send([]byte("DROP")))
_, err = rp.Recv()
MustBeError(t, err, mangos.ErrRecvTimeout)
}