1/*
2 * libjingle
3 * Copyright 2013 Google Inc
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "talk/app/webrtc/datachannelinterface.h"
29#include "talk/base/bytebuffer.h"
30#include "talk/base/gunit.h"
31#include "talk/media/sctp/sctputils.h"
32
33class SctpUtilsTest : public testing::Test {
34 public:
35  void VerifyOpenMessageFormat(const talk_base::Buffer& packet,
36                               const std::string& label,
37                               const webrtc::DataChannelInit& config) {
38    uint8 message_type;
39    uint8 channel_type;
40    uint32 reliability;
41    uint16 priority;
42    uint16 label_length;
43    uint16 protocol_length;
44
45    talk_base::ByteBuffer buffer(packet.data(), packet.length());
46    ASSERT_TRUE(buffer.ReadUInt8(&message_type));
47    EXPECT_EQ(0x03, message_type);
48
49    ASSERT_TRUE(buffer.ReadUInt8(&channel_type));
50    if (config.ordered) {
51      EXPECT_EQ(config.maxRetransmits > -1 ?
52                    0x01 : (config.maxRetransmitTime > -1 ? 0x02 : 0),
53                channel_type);
54    } else {
55      EXPECT_EQ(config.maxRetransmits > -1 ?
56                    0x81 : (config.maxRetransmitTime > -1 ? 0x82 : 0x80),
57                channel_type);
58    }
59
60    ASSERT_TRUE(buffer.ReadUInt16(&priority));
61
62    ASSERT_TRUE(buffer.ReadUInt32(&reliability));
63    if (config.maxRetransmits > -1 || config.maxRetransmitTime > -1) {
64      EXPECT_EQ(config.maxRetransmits > -1 ?
65                    config.maxRetransmits : config.maxRetransmitTime,
66                static_cast<int>(reliability));
67    }
68
69    ASSERT_TRUE(buffer.ReadUInt16(&label_length));
70    ASSERT_TRUE(buffer.ReadUInt16(&protocol_length));
71    EXPECT_EQ(label.size(), label_length);
72    EXPECT_EQ(config.protocol.size(), protocol_length);
73
74    std::string label_output;
75    ASSERT_TRUE(buffer.ReadString(&label_output, label_length));
76    EXPECT_EQ(label, label_output);
77    std::string protocol_output;
78    ASSERT_TRUE(buffer.ReadString(&protocol_output, protocol_length));
79    EXPECT_EQ(config.protocol, protocol_output);
80  }
81};
82
83TEST_F(SctpUtilsTest, WriteParseMessageWithOrderedReliable) {
84  std::string input_label = "abc";
85  webrtc::DataChannelInit config;
86  config.protocol = "y";
87
88  talk_base::Buffer packet;
89  ASSERT_TRUE(
90      cricket::WriteDataChannelOpenMessage(input_label, config, &packet));
91
92  VerifyOpenMessageFormat(packet, input_label, config);
93
94  std::string output_label;
95  webrtc::DataChannelInit output_config;
96  ASSERT_TRUE(cricket::ParseDataChannelOpenMessage(
97      packet, &output_label, &output_config));
98
99  EXPECT_EQ(input_label, output_label);
100  EXPECT_EQ(config.protocol, output_config.protocol);
101  EXPECT_EQ(config.ordered, output_config.ordered);
102  EXPECT_EQ(config.maxRetransmitTime, output_config.maxRetransmitTime);
103  EXPECT_EQ(config.maxRetransmits, output_config.maxRetransmits);
104}
105
106TEST_F(SctpUtilsTest, WriteParseOpenMessageWithMaxRetransmitTime) {
107  std::string input_label = "abc";
108  webrtc::DataChannelInit config;
109  config.ordered = false;
110  config.maxRetransmitTime = 10;
111  config.protocol = "y";
112
113  talk_base::Buffer packet;
114  ASSERT_TRUE(
115      cricket::WriteDataChannelOpenMessage(input_label, config, &packet));
116
117  VerifyOpenMessageFormat(packet, input_label, config);
118
119  std::string output_label;
120  webrtc::DataChannelInit output_config;
121  ASSERT_TRUE(cricket::ParseDataChannelOpenMessage(
122      packet, &output_label, &output_config));
123
124  EXPECT_EQ(input_label, output_label);
125  EXPECT_EQ(config.protocol, output_config.protocol);
126  EXPECT_EQ(config.ordered, output_config.ordered);
127  EXPECT_EQ(config.maxRetransmitTime, output_config.maxRetransmitTime);
128  EXPECT_EQ(-1, output_config.maxRetransmits);
129}
130
131TEST_F(SctpUtilsTest, WriteParseOpenMessageWithMaxRetransmits) {
132  std::string input_label = "abc";
133  webrtc::DataChannelInit config;
134  config.maxRetransmits = 10;
135  config.protocol = "y";
136
137  talk_base::Buffer packet;
138  ASSERT_TRUE(
139      cricket::WriteDataChannelOpenMessage(input_label, config, &packet));
140
141  VerifyOpenMessageFormat(packet, input_label, config);
142
143  std::string output_label;
144  webrtc::DataChannelInit output_config;
145  ASSERT_TRUE(cricket::ParseDataChannelOpenMessage(
146      packet, &output_label, &output_config));
147
148  EXPECT_EQ(input_label, output_label);
149  EXPECT_EQ(config.protocol, output_config.protocol);
150  EXPECT_EQ(config.ordered, output_config.ordered);
151  EXPECT_EQ(config.maxRetransmits, output_config.maxRetransmits);
152  EXPECT_EQ(-1, output_config.maxRetransmitTime);
153}
154