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30 #include "talk/app/webrtc/jsepicecandidate.h"
31 #include "talk/app/webrtc/jsepsessiondescription.h"
32 #include "webrtc/p2p/base/candidate.h"
33 #include "webrtc/p2p/base/constants.h"
34 #include "webrtc/p2p/base/sessiondescription.h"
35 #include "talk/session/media/mediasession.h"
36 #include "webrtc/base/gunit.h"
37 #include "webrtc/base/helpers.h"
38 #include "webrtc/base/scoped_ptr.h"
39 #include "webrtc/base/ssladapter.h"
40 #include "webrtc/base/stringencode.h"
42 using webrtc::IceCandidateCollection;
43 using webrtc::IceCandidateInterface;
44 using webrtc::JsepIceCandidate;
45 using webrtc::JsepSessionDescription;
46 using webrtc::SessionDescriptionInterface;
47 using rtc::scoped_ptr;
49 static const char kCandidateUfrag[] = "ufrag";
50 static const char kCandidatePwd[] = "pwd";
51 static const char kCandidateUfragVoice[] = "ufrag_voice";
52 static const char kCandidatePwdVoice[] = "pwd_voice";
53 static const char kCandidateUfragVideo[] = "ufrag_video";
54 static const char kCandidatePwdVideo[] = "pwd_video";
56 // This creates a session description with both audio and video media contents.
57 // In SDP this is described by two m lines, one audio and one video.
58 static cricket::SessionDescription* CreateCricketSessionDescription() {
59 cricket::SessionDescription* desc(new cricket::SessionDescription());
60 // AudioContentDescription
61 scoped_ptr<cricket::AudioContentDescription> audio(
62 new cricket::AudioContentDescription());
64 // VideoContentDescription
65 scoped_ptr<cricket::VideoContentDescription> video(
66 new cricket::VideoContentDescription());
68 audio->AddCodec(cricket::AudioCodec(103, "ISAC", 16000, 0, 0, 0));
69 desc->AddContent(cricket::CN_AUDIO, cricket::NS_JINGLE_RTP,
72 video->AddCodec(cricket::VideoCodec(120, "VP8", 640, 480, 30, 0));
73 desc->AddContent(cricket::CN_VIDEO, cricket::NS_JINGLE_RTP,
76 EXPECT_TRUE(desc->AddTransportInfo(
77 cricket::TransportInfo(
79 cricket::TransportDescription(
80 cricket::NS_GINGLE_P2P,
81 std::vector<std::string>(),
82 kCandidateUfragVoice, kCandidatePwdVoice,
83 cricket::ICEMODE_FULL,
84 cricket::CONNECTIONROLE_NONE,
85 NULL, cricket::Candidates()))));
86 EXPECT_TRUE(desc->AddTransportInfo(
87 cricket::TransportInfo(cricket::CN_VIDEO,
88 cricket::TransportDescription(
89 cricket::NS_GINGLE_P2P,
90 std::vector<std::string>(),
91 kCandidateUfragVideo, kCandidatePwdVideo,
92 cricket::ICEMODE_FULL,
93 cricket::CONNECTIONROLE_NONE,
94 NULL, cricket::Candidates()))));
98 class JsepSessionDescriptionTest : public testing::Test {
100 virtual void SetUp() {
102 rtc::SocketAddress address("127.0.0.1", port++);
103 cricket::Candidate candidate("rtp", cricket::ICE_CANDIDATE_COMPONENT_RTP,
104 "udp", address, 1, "",
105 "", "local", "eth0", 0, "1");
106 candidate_ = candidate;
107 const std::string session_id =
108 rtc::ToString(rtc::CreateRandomId64());
109 const std::string session_version =
110 rtc::ToString(rtc::CreateRandomId());
111 jsep_desc_.reset(new JsepSessionDescription("dummy"));
112 ASSERT_TRUE(jsep_desc_->Initialize(CreateCricketSessionDescription(),
113 session_id, session_version));
116 std::string Serialize(const SessionDescriptionInterface* desc) {
118 EXPECT_TRUE(desc->ToString(&sdp));
119 EXPECT_FALSE(sdp.empty());
123 SessionDescriptionInterface* DeSerialize(const std::string& sdp) {
124 JsepSessionDescription* desc(new JsepSessionDescription("dummy"));
125 EXPECT_TRUE(desc->Initialize(sdp, NULL));
129 cricket::Candidate candidate_;
130 rtc::scoped_ptr<JsepSessionDescription> jsep_desc_;
133 // Test that number_of_mediasections() returns the number of media contents in
134 // a session description.
135 TEST_F(JsepSessionDescriptionTest, CheckSessionDescription) {
136 EXPECT_EQ(2u, jsep_desc_->number_of_mediasections());
139 // Test that we can add a candidate to a session description.
140 TEST_F(JsepSessionDescriptionTest, AddCandidateWithoutMid) {
141 JsepIceCandidate jsep_candidate("", 0, candidate_);
142 EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate));
143 const IceCandidateCollection* ice_candidates = jsep_desc_->candidates(0);
144 ASSERT_TRUE(ice_candidates != NULL);
145 EXPECT_EQ(1u, ice_candidates->count());
146 const IceCandidateInterface* ice_candidate = ice_candidates->at(0);
147 ASSERT_TRUE(ice_candidate != NULL);
148 candidate_.set_username(kCandidateUfragVoice);
149 candidate_.set_password(kCandidatePwdVoice);
150 EXPECT_TRUE(ice_candidate->candidate().IsEquivalent(candidate_));
151 EXPECT_EQ(0, ice_candidate->sdp_mline_index());
152 EXPECT_EQ(0u, jsep_desc_->candidates(1)->count());
155 TEST_F(JsepSessionDescriptionTest, AddCandidateWithMid) {
156 // mid and m-line index don't match, in this case mid is preferred.
157 JsepIceCandidate jsep_candidate("video", 0, candidate_);
158 EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate));
159 EXPECT_EQ(0u, jsep_desc_->candidates(0)->count());
160 const IceCandidateCollection* ice_candidates = jsep_desc_->candidates(1);
161 ASSERT_TRUE(ice_candidates != NULL);
162 EXPECT_EQ(1u, ice_candidates->count());
163 const IceCandidateInterface* ice_candidate = ice_candidates->at(0);
164 ASSERT_TRUE(ice_candidate != NULL);
165 candidate_.set_username(kCandidateUfragVideo);
166 candidate_.set_password(kCandidatePwdVideo);
167 EXPECT_TRUE(ice_candidate->candidate().IsEquivalent(candidate_));
168 // The mline index should have been updated according to mid.
169 EXPECT_EQ(1, ice_candidate->sdp_mline_index());
172 TEST_F(JsepSessionDescriptionTest, AddCandidateAlreadyHasUfrag) {
173 candidate_.set_username(kCandidateUfrag);
174 candidate_.set_password(kCandidatePwd);
175 JsepIceCandidate jsep_candidate("audio", 0, candidate_);
176 EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate));
177 const IceCandidateCollection* ice_candidates = jsep_desc_->candidates(0);
178 ASSERT_TRUE(ice_candidates != NULL);
179 EXPECT_EQ(1u, ice_candidates->count());
180 const IceCandidateInterface* ice_candidate = ice_candidates->at(0);
181 ASSERT_TRUE(ice_candidate != NULL);
182 candidate_.set_username(kCandidateUfrag);
183 candidate_.set_password(kCandidatePwd);
184 EXPECT_TRUE(ice_candidate->candidate().IsEquivalent(candidate_));
186 EXPECT_EQ(0u, jsep_desc_->candidates(1)->count());
189 // Test that we can not add a candidate if there is no corresponding media
190 // content in the session description.
191 TEST_F(JsepSessionDescriptionTest, AddBadCandidate) {
192 JsepIceCandidate bad_candidate1("", 55, candidate_);
193 EXPECT_FALSE(jsep_desc_->AddCandidate(&bad_candidate1));
195 JsepIceCandidate bad_candidate2("some weird mid", 0, candidate_);
196 EXPECT_FALSE(jsep_desc_->AddCandidate(&bad_candidate2));
199 // Tests that repeatedly adding the same candidate, with or without credentials,
200 // does not increase the number of candidates in the description.
201 TEST_F(JsepSessionDescriptionTest, AddCandidateDuplicates) {
202 JsepIceCandidate jsep_candidate("", 0, candidate_);
203 EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate));
204 EXPECT_EQ(1u, jsep_desc_->candidates(0)->count());
206 // Add the same candidate again. It should be ignored.
207 EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate));
208 EXPECT_EQ(1u, jsep_desc_->candidates(0)->count());
210 // Create a new candidate, identical except that the ufrag and pwd are now
212 candidate_.set_username(kCandidateUfragVoice);
213 candidate_.set_password(kCandidatePwdVoice);
214 JsepIceCandidate jsep_candidate_with_credentials("", 0, candidate_);
216 // This should also be identified as redundant and ignored.
217 EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate_with_credentials));
218 EXPECT_EQ(1u, jsep_desc_->candidates(0)->count());
221 // Test that we can serialize a JsepSessionDescription and deserialize it again.
222 TEST_F(JsepSessionDescriptionTest, SerializeDeserialize) {
223 std::string sdp = Serialize(jsep_desc_.get());
225 scoped_ptr<SessionDescriptionInterface> parsed_jsep_desc(DeSerialize(sdp));
226 EXPECT_EQ(2u, parsed_jsep_desc->number_of_mediasections());
228 std::string parsed_sdp = Serialize(parsed_jsep_desc.get());
229 EXPECT_EQ(sdp, parsed_sdp);
232 // Tests that we can serialize and deserialize a JsepSesssionDescription
234 TEST_F(JsepSessionDescriptionTest, SerializeDeserializeWithCandidates) {
235 std::string sdp = Serialize(jsep_desc_.get());
237 // Add a candidate and check that the serialized result is different.
238 JsepIceCandidate jsep_candidate("audio", 0, candidate_);
239 EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate));
240 std::string sdp_with_candidate = Serialize(jsep_desc_.get());
241 EXPECT_NE(sdp, sdp_with_candidate);
243 scoped_ptr<SessionDescriptionInterface> parsed_jsep_desc(
244 DeSerialize(sdp_with_candidate));
245 std::string parsed_sdp_with_candidate = Serialize(parsed_jsep_desc.get());
247 EXPECT_EQ(sdp_with_candidate, parsed_sdp_with_candidate);