1// libjingle
2// Copyright 2011 Google Inc.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are met:
6//
7//  1. Redistributions of source code must retain the above copyright notice,
8//     this list of conditions and the following disclaimer.
9//  2. Redistributions in binary form must reproduce the above copyright notice,
10//     this list of conditions and the following disclaimer in the documentation
11//     and/or other materials provided with the distribution.
12//  3. The name of the author may not be used to endorse or promote products
13//     derived from this software without specific prior written permission.
14//
15// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
16// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
18// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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24// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25
26#include "talk/session/media/rtcpmuxfilter.h"
27
28#include "talk/media/base/testutils.h"
29#include "webrtc/base/gunit.h"
30
31TEST(RtcpMuxFilterTest, DemuxRtcpSender) {
32  cricket::RtcpMuxFilter filter;
33  const char data[] = { 0, 73, 0, 0 };
34  const int len = 4;
35
36  // Init state - refuse to demux
37  EXPECT_FALSE(filter.DemuxRtcp(data, len));
38  // After sent offer, demux should be enabled
39  filter.SetOffer(true, cricket::CS_LOCAL);
40  EXPECT_TRUE(filter.DemuxRtcp(data, len));
41  // Remote accepted, demux should be enabled
42  filter.SetAnswer(true, cricket::CS_REMOTE);
43  EXPECT_TRUE(filter.DemuxRtcp(data, len));
44}
45
46TEST(RtcpMuxFilterTest, DemuxRtcpReceiver) {
47  cricket::RtcpMuxFilter filter;
48  const char data[] = { 0, 73, 0, 0 };
49  const int len = 4;
50
51  // Init state - refuse to demux
52  EXPECT_FALSE(filter.DemuxRtcp(data, len));
53  // After received offer, demux should not be enabled
54  filter.SetOffer(true, cricket::CS_REMOTE);
55  EXPECT_FALSE(filter.DemuxRtcp(data, len));
56  // We accept, demux is now enabled
57  filter.SetAnswer(true, cricket::CS_LOCAL);
58  EXPECT_TRUE(filter.DemuxRtcp(data, len));
59}
60
61TEST(RtcpMuxFilterTest, DemuxRtcpSenderProvisionalAnswer) {
62  cricket::RtcpMuxFilter filter;
63  const char data[] = { 0, 73, 0, 0 };
64  const int len = 4;
65
66  filter.SetOffer(true, cricket::CS_REMOTE);
67  // Received provisional answer without mux enabled.
68  filter.SetProvisionalAnswer(false, cricket::CS_LOCAL);
69  EXPECT_FALSE(filter.DemuxRtcp(data, len));
70  // Received provisional answer with mux enabled.
71  filter.SetProvisionalAnswer(true, cricket::CS_LOCAL);
72  EXPECT_TRUE(filter.DemuxRtcp(data, len));
73  // Remote accepted, demux should be enabled.
74  filter.SetAnswer(true, cricket::CS_LOCAL);
75  EXPECT_TRUE(filter.DemuxRtcp(data, len));
76}
77
78TEST(RtcpMuxFilterTest, DemuxRtcpReceiverProvisionalAnswer) {
79  cricket::RtcpMuxFilter filter;
80  const char data[] = { 0, 73, 0, 0 };
81  const int len = 4;
82
83  filter.SetOffer(true, cricket::CS_LOCAL);
84  // Received provisional answer without mux enabled.
85  filter.SetProvisionalAnswer(false, cricket::CS_REMOTE);
86  // After sent offer, demux should be enabled until we have received a
87  // final answer.
88  EXPECT_TRUE(filter.DemuxRtcp(data, len));
89  // Received provisional answer with mux enabled.
90  filter.SetProvisionalAnswer(true, cricket::CS_REMOTE);
91  EXPECT_TRUE(filter.DemuxRtcp(data, len));
92  // Remote accepted, demux should be enabled.
93  filter.SetAnswer(true, cricket::CS_REMOTE);
94  EXPECT_TRUE(filter.DemuxRtcp(data, len));
95}
96
97TEST(RtcpMuxFilterTest, IsActiveSender) {
98  cricket::RtcpMuxFilter filter;
99  // Init state - not active
100  EXPECT_FALSE(filter.IsActive());
101  // After sent offer, demux should not be active.
102  filter.SetOffer(true, cricket::CS_LOCAL);
103  EXPECT_FALSE(filter.IsActive());
104  // Remote accepted, filter is now active.
105  filter.SetAnswer(true, cricket::CS_REMOTE);
106  EXPECT_TRUE(filter.IsActive());
107}
108
109// Test that we can receive provisional answer and final answer.
110TEST(RtcpMuxFilterTest, ReceivePrAnswer) {
111  cricket::RtcpMuxFilter filter;
112  filter.SetOffer(true, cricket::CS_LOCAL);
113  // Received provisional answer with mux enabled.
114  EXPECT_TRUE(filter.SetProvisionalAnswer(true, cricket::CS_REMOTE));
115  // We are now active since both sender and receiver support mux.
116  EXPECT_TRUE(filter.IsActive());
117  // Received provisional answer with mux disabled.
118  EXPECT_TRUE(filter.SetProvisionalAnswer(false, cricket::CS_REMOTE));
119  // We are now inactive since the receiver doesn't support mux.
120  EXPECT_FALSE(filter.IsActive());
121  // Received final answer with mux enabled.
122  EXPECT_TRUE(filter.SetAnswer(true, cricket::CS_REMOTE));
123  EXPECT_TRUE(filter.IsActive());
124}
125
126TEST(RtcpMuxFilterTest, IsActiveReceiver) {
127  cricket::RtcpMuxFilter filter;
128  // Init state - not active.
129  EXPECT_FALSE(filter.IsActive());
130  // After received offer, demux should not be active
131  filter.SetOffer(true, cricket::CS_REMOTE);
132  EXPECT_FALSE(filter.IsActive());
133  // We accept, filter is now active
134  filter.SetAnswer(true, cricket::CS_LOCAL);
135  EXPECT_TRUE(filter.IsActive());
136}
137
138// Test that we can send provisional answer and final answer.
139TEST(RtcpMuxFilterTest, SendPrAnswer) {
140  cricket::RtcpMuxFilter filter;
141  filter.SetOffer(true, cricket::CS_REMOTE);
142  // Send provisional answer with mux enabled.
143  EXPECT_TRUE(filter.SetProvisionalAnswer(true, cricket::CS_LOCAL));
144  EXPECT_TRUE(filter.IsActive());
145  // Received provisional answer with mux disabled.
146  EXPECT_TRUE(filter.SetProvisionalAnswer(false, cricket::CS_LOCAL));
147  EXPECT_FALSE(filter.IsActive());
148  // Send final answer with mux enabled.
149  EXPECT_TRUE(filter.SetAnswer(true, cricket::CS_LOCAL));
150  EXPECT_TRUE(filter.IsActive());
151}
152
153// Test that we can enable the filter in an update.
154// We can not disable the filter later since that would mean we need to
155// recreate a rtcp transport channel.
156TEST(RtcpMuxFilterTest, EnableFilterDuringUpdate) {
157  cricket::RtcpMuxFilter filter;
158  EXPECT_FALSE(filter.IsActive());
159  EXPECT_TRUE(filter.SetOffer(false, cricket::CS_REMOTE));
160  EXPECT_TRUE(filter.SetAnswer(false, cricket::CS_LOCAL));
161  EXPECT_FALSE(filter.IsActive());
162
163  EXPECT_TRUE(filter.SetOffer(true, cricket::CS_REMOTE));
164  EXPECT_TRUE(filter.SetAnswer(true, cricket::CS_LOCAL));
165  EXPECT_TRUE(filter.IsActive());
166
167  EXPECT_FALSE(filter.SetOffer(false, cricket::CS_REMOTE));
168  EXPECT_FALSE(filter.SetAnswer(false, cricket::CS_LOCAL));
169  EXPECT_TRUE(filter.IsActive());
170}
171
172// Test that SetOffer can be called twice.
173TEST(RtcpMuxFilterTest, SetOfferTwice) {
174  cricket::RtcpMuxFilter filter;
175
176  EXPECT_TRUE(filter.SetOffer(true, cricket::CS_REMOTE));
177  EXPECT_TRUE(filter.SetOffer(true, cricket::CS_REMOTE));
178  EXPECT_TRUE(filter.SetAnswer(true, cricket::CS_LOCAL));
179  EXPECT_TRUE(filter.IsActive());
180
181  cricket::RtcpMuxFilter filter2;
182  EXPECT_TRUE(filter2.SetOffer(false, cricket::CS_LOCAL));
183  EXPECT_TRUE(filter2.SetOffer(false, cricket::CS_LOCAL));
184  EXPECT_TRUE(filter2.SetAnswer(false, cricket::CS_REMOTE));
185  EXPECT_FALSE(filter2.IsActive());
186}
187
188// Test that the filter can be enabled twice.
189TEST(RtcpMuxFilterTest, EnableFilterTwiceDuringUpdate) {
190  cricket::RtcpMuxFilter filter;
191
192  EXPECT_TRUE(filter.SetOffer(true, cricket::CS_REMOTE));
193  EXPECT_TRUE(filter.SetAnswer(true, cricket::CS_LOCAL));
194  EXPECT_TRUE(filter.IsActive());
195
196  EXPECT_TRUE(filter.SetOffer(true, cricket::CS_REMOTE));
197  EXPECT_TRUE(filter.SetAnswer(true, cricket::CS_LOCAL));
198  EXPECT_TRUE(filter.IsActive());
199}
200
201// Test that the filter can be kept disabled during updates.
202TEST(RtcpMuxFilterTest, KeepFilterDisabledDuringUpdate) {
203  cricket::RtcpMuxFilter filter;
204
205  EXPECT_TRUE(filter.SetOffer(false, cricket::CS_REMOTE));
206  EXPECT_TRUE(filter.SetAnswer(false, cricket::CS_LOCAL));
207  EXPECT_FALSE(filter.IsActive());
208
209  EXPECT_TRUE(filter.SetOffer(false, cricket::CS_REMOTE));
210  EXPECT_TRUE(filter.SetAnswer(false, cricket::CS_LOCAL));
211  EXPECT_FALSE(filter.IsActive());
212}
213