forked from quic-go/quic-go
-
Notifications
You must be signed in to change notification settings - Fork 1
/
packet_handler_map_test.go
212 lines (190 loc) · 7.97 KB
/
packet_handler_map_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
package quic
import (
"bytes"
"errors"
"time"
"github.com/golang/mock/gomock"
"github.com/lucas-clemente/quic-go/internal/protocol"
"github.com/lucas-clemente/quic-go/internal/utils"
"github.com/lucas-clemente/quic-go/internal/wire"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Packet Handler Map", func() {
var (
handler *packetHandlerMap
conn *mockPacketConn
)
getPacket := func(connID protocol.ConnectionID) []byte {
buf := &bytes.Buffer{}
err := (&wire.Header{
IsLongHeader: true,
Type: protocol.PacketTypeHandshake,
DestConnectionID: connID,
PacketNumberLen: protocol.PacketNumberLen1,
Version: protocol.VersionWhatever,
}).Write(buf, protocol.PerspectiveServer, protocol.VersionWhatever)
Expect(err).ToNot(HaveOccurred())
return buf.Bytes()
}
BeforeEach(func() {
conn = newMockPacketConn()
handler = newPacketHandlerMap(conn, 5, utils.DefaultLogger).(*packetHandlerMap)
})
It("closes", func() {
testErr := errors.New("test error ")
sess1 := NewMockPacketHandler(mockCtrl)
sess1.EXPECT().destroy(testErr)
sess2 := NewMockPacketHandler(mockCtrl)
sess2.EXPECT().destroy(testErr)
handler.Add(protocol.ConnectionID{1, 1, 1, 1}, sess1)
handler.Add(protocol.ConnectionID{2, 2, 2, 2}, sess2)
handler.close(testErr)
})
Context("handling packets", func() {
It("handles packets for different packet handlers on the same packet conn", func() {
connID1 := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
connID2 := protocol.ConnectionID{8, 7, 6, 5, 4, 3, 2, 1}
packetHandler1 := NewMockPacketHandler(mockCtrl)
packetHandler2 := NewMockPacketHandler(mockCtrl)
handledPacket1 := make(chan struct{})
handledPacket2 := make(chan struct{})
packetHandler1.EXPECT().handlePacket(gomock.Any()).Do(func(p *receivedPacket) {
Expect(p.header.DestConnectionID).To(Equal(connID1))
close(handledPacket1)
})
packetHandler1.EXPECT().GetVersion()
packetHandler1.EXPECT().GetPerspective().Return(protocol.PerspectiveClient)
packetHandler2.EXPECT().handlePacket(gomock.Any()).Do(func(p *receivedPacket) {
Expect(p.header.DestConnectionID).To(Equal(connID2))
close(handledPacket2)
})
packetHandler2.EXPECT().GetVersion()
packetHandler2.EXPECT().GetPerspective().Return(protocol.PerspectiveClient)
handler.Add(connID1, packetHandler1)
handler.Add(connID2, packetHandler2)
conn.dataToRead <- getPacket(connID1)
conn.dataToRead <- getPacket(connID2)
Eventually(handledPacket1).Should(BeClosed())
Eventually(handledPacket2).Should(BeClosed())
// makes the listen go routine return
packetHandler1.EXPECT().destroy(gomock.Any()).AnyTimes()
packetHandler2.EXPECT().destroy(gomock.Any()).AnyTimes()
close(conn.dataToRead)
})
It("drops unparseable packets", func() {
err := handler.handlePacket(nil, []byte{0, 1, 2, 3})
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("error parsing invariant header:"))
})
It("deletes closed session entries after a wait time", func() {
handler.deleteRetiredSessionsAfter = 10 * time.Millisecond
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
handler.Add(connID, NewMockPacketHandler(mockCtrl))
handler.Retire(connID)
time.Sleep(30 * time.Millisecond)
Expect(handler.handlePacket(nil, getPacket(connID))).To(MatchError("received a packet with an unexpected connection ID 0x0102030405060708"))
})
It("passes packets arriving late for closed sessions to that session", func() {
handler.deleteRetiredSessionsAfter = time.Hour
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
packetHandler := NewMockPacketHandler(mockCtrl)
packetHandler.EXPECT().GetVersion().Return(protocol.VersionWhatever)
packetHandler.EXPECT().GetPerspective().Return(protocol.PerspectiveClient)
packetHandler.EXPECT().handlePacket(gomock.Any())
handler.Add(connID, packetHandler)
handler.Retire(connID)
err := handler.handlePacket(nil, getPacket(connID))
Expect(err).ToNot(HaveOccurred())
})
It("drops packets for unknown receivers", func() {
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
err := handler.handlePacket(nil, getPacket(connID))
Expect(err).To(MatchError("received a packet with an unexpected connection ID 0x0102030405060708"))
})
It("errors on packets that are smaller than the Payload Length in the packet header", func() {
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
packetHandler := NewMockPacketHandler(mockCtrl)
packetHandler.EXPECT().GetVersion().Return(protocol.VersionWhatever)
packetHandler.EXPECT().GetPerspective().Return(protocol.PerspectiveClient)
handler.Add(connID, packetHandler)
hdr := &wire.Header{
IsLongHeader: true,
Type: protocol.PacketTypeHandshake,
PayloadLen: 1000,
DestConnectionID: connID,
PacketNumberLen: protocol.PacketNumberLen1,
Version: protocol.VersionWhatever,
}
buf := &bytes.Buffer{}
Expect(hdr.Write(buf, protocol.PerspectiveServer, protocol.VersionWhatever)).To(Succeed())
buf.Write(bytes.Repeat([]byte{0}, 500))
err := handler.handlePacket(nil, buf.Bytes())
Expect(err).To(MatchError("packet payload (500 bytes) is smaller than the expected payload length (1000 bytes)"))
})
It("cuts packets at the Payload Length", func() {
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
packetHandler := NewMockPacketHandler(mockCtrl)
packetHandler.EXPECT().GetVersion().Return(protocol.VersionWhatever)
packetHandler.EXPECT().GetPerspective().Return(protocol.PerspectiveClient)
handler.Add(connID, packetHandler)
packetHandler.EXPECT().handlePacket(gomock.Any()).Do(func(p *receivedPacket) {
Expect(p.data).To(HaveLen(456))
})
hdr := &wire.Header{
IsLongHeader: true,
Type: protocol.PacketTypeHandshake,
PayloadLen: 456,
DestConnectionID: connID,
PacketNumberLen: protocol.PacketNumberLen1,
Version: protocol.VersionWhatever,
}
buf := &bytes.Buffer{}
Expect(hdr.Write(buf, protocol.PerspectiveServer, protocol.VersionWhatever)).To(Succeed())
buf.Write(bytes.Repeat([]byte{0}, 500))
err := handler.handlePacket(nil, buf.Bytes())
Expect(err).ToNot(HaveOccurred())
})
It("closes the packet handlers when reading from the conn fails", func() {
done := make(chan struct{})
packetHandler := NewMockPacketHandler(mockCtrl)
packetHandler.EXPECT().destroy(gomock.Any()).Do(func(e error) {
Expect(e).To(HaveOccurred())
close(done)
})
handler.Add(protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}, packetHandler)
conn.Close()
Eventually(done).Should(BeClosed())
})
})
Context("running a server", func() {
It("adds a server", func() {
connID := protocol.ConnectionID{0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88}
p := getPacket(connID)
server := NewMockUnknownPacketHandler(mockCtrl)
server.EXPECT().handlePacket(gomock.Any()).Do(func(p *receivedPacket) {
Expect(p.header.DestConnectionID).To(Equal(connID))
})
handler.SetServer(server)
Expect(handler.handlePacket(nil, p)).To(Succeed())
})
It("closes all server sessions", func() {
clientSess := NewMockPacketHandler(mockCtrl)
clientSess.EXPECT().GetPerspective().Return(protocol.PerspectiveClient)
serverSess := NewMockPacketHandler(mockCtrl)
serverSess.EXPECT().GetPerspective().Return(protocol.PerspectiveServer)
serverSess.EXPECT().Close()
handler.Add(protocol.ConnectionID{1, 1, 1, 1}, clientSess)
handler.Add(protocol.ConnectionID{2, 2, 2, 2}, serverSess)
handler.CloseServer()
})
It("stops handling packets with unknown connection IDs after the server is closed", func() {
connID := protocol.ConnectionID{0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88}
p := getPacket(connID)
server := NewMockUnknownPacketHandler(mockCtrl)
handler.SetServer(server)
handler.CloseServer()
Expect(handler.handlePacket(nil, p)).To(MatchError("received a packet with an unexpected connection ID 0x1122334455667788"))
})
})
})