| /* |
| * Copyright 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "webrtc/api/jsepicecandidate.h" |
| #include "webrtc/api/jsepsessiondescription.h" |
| #include "webrtc/api/webrtcsdp.h" |
| #include "webrtc/p2p/base/candidate.h" |
| #include "webrtc/p2p/base/p2pconstants.h" |
| #include "webrtc/p2p/base/sessiondescription.h" |
| #include "webrtc/pc/mediasession.h" |
| #include "webrtc/rtc_base/gunit.h" |
| #include "webrtc/rtc_base/helpers.h" |
| #include "webrtc/rtc_base/ssladapter.h" |
| #include "webrtc/rtc_base/stringencode.h" |
| |
| using webrtc::IceCandidateCollection; |
| using webrtc::IceCandidateInterface; |
| using webrtc::JsepIceCandidate; |
| using webrtc::JsepSessionDescription; |
| using webrtc::SessionDescriptionInterface; |
| |
| static const char kCandidateUfrag[] = "ufrag"; |
| static const char kCandidatePwd[] = "pwd"; |
| static const char kCandidateUfragVoice[] = "ufrag_voice"; |
| static const char kCandidatePwdVoice[] = "pwd_voice"; |
| static const char kCandidateUfragVideo[] = "ufrag_video"; |
| static const char kCandidatePwdVideo[] = "pwd_video"; |
| static const char kCandidateFoundation[] = "a0+B/1"; |
| static const uint32_t kCandidatePriority = 2130706432U; // pref = 1.0 |
| static const uint32_t kCandidateGeneration = 2; |
| |
| // This creates a session description with both audio and video media contents. |
| // In SDP this is described by two m lines, one audio and one video. |
| static cricket::SessionDescription* CreateCricketSessionDescription() { |
| cricket::SessionDescription* desc(new cricket::SessionDescription()); |
| // AudioContentDescription |
| std::unique_ptr<cricket::AudioContentDescription> audio( |
| new cricket::AudioContentDescription()); |
| |
| // VideoContentDescription |
| std::unique_ptr<cricket::VideoContentDescription> video( |
| new cricket::VideoContentDescription()); |
| |
| audio->AddCodec(cricket::AudioCodec(103, "ISAC", 16000, 0, 0)); |
| desc->AddContent(cricket::CN_AUDIO, cricket::NS_JINGLE_RTP, |
| audio.release()); |
| |
| video->AddCodec(cricket::VideoCodec(120, "VP8")); |
| desc->AddContent(cricket::CN_VIDEO, cricket::NS_JINGLE_RTP, |
| video.release()); |
| |
| EXPECT_TRUE(desc->AddTransportInfo(cricket::TransportInfo( |
| cricket::CN_AUDIO, |
| cricket::TransportDescription( |
| std::vector<std::string>(), kCandidateUfragVoice, kCandidatePwdVoice, |
| cricket::ICEMODE_FULL, cricket::CONNECTIONROLE_NONE, NULL)))); |
| EXPECT_TRUE(desc->AddTransportInfo(cricket::TransportInfo( |
| cricket::CN_VIDEO, |
| cricket::TransportDescription( |
| std::vector<std::string>(), kCandidateUfragVideo, kCandidatePwdVideo, |
| cricket::ICEMODE_FULL, cricket::CONNECTIONROLE_NONE, NULL)))); |
| return desc; |
| } |
| |
| class JsepSessionDescriptionTest : public testing::Test { |
| protected: |
| virtual void SetUp() { |
| int port = 1234; |
| rtc::SocketAddress address("127.0.0.1", port++); |
| cricket::Candidate candidate(cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| address, 1, "", "", "local", 0, "1"); |
| candidate_ = candidate; |
| const std::string session_id = |
| rtc::ToString(rtc::CreateRandomId64()); |
| const std::string session_version = |
| rtc::ToString(rtc::CreateRandomId()); |
| jsep_desc_.reset(new JsepSessionDescription("dummy")); |
| ASSERT_TRUE(jsep_desc_->Initialize(CreateCricketSessionDescription(), |
| session_id, session_version)); |
| } |
| |
| std::string Serialize(const SessionDescriptionInterface* desc) { |
| std::string sdp; |
| EXPECT_TRUE(desc->ToString(&sdp)); |
| EXPECT_FALSE(sdp.empty()); |
| return sdp; |
| } |
| |
| SessionDescriptionInterface* DeSerialize(const std::string& sdp) { |
| JsepSessionDescription* desc(new JsepSessionDescription("dummy")); |
| EXPECT_TRUE(webrtc::SdpDeserialize(sdp, desc, nullptr)); |
| return desc; |
| } |
| |
| cricket::Candidate candidate_; |
| std::unique_ptr<JsepSessionDescription> jsep_desc_; |
| }; |
| |
| // Test that number_of_mediasections() returns the number of media contents in |
| // a session description. |
| TEST_F(JsepSessionDescriptionTest, CheckSessionDescription) { |
| EXPECT_EQ(2u, jsep_desc_->number_of_mediasections()); |
| } |
| |
| // Test that we can add a candidate to a session description without MID. |
| TEST_F(JsepSessionDescriptionTest, AddCandidateWithoutMid) { |
| JsepIceCandidate jsep_candidate("", 0, candidate_); |
| EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate)); |
| const IceCandidateCollection* ice_candidates = jsep_desc_->candidates(0); |
| ASSERT_TRUE(ice_candidates != NULL); |
| EXPECT_EQ(1u, ice_candidates->count()); |
| const IceCandidateInterface* ice_candidate = ice_candidates->at(0); |
| ASSERT_TRUE(ice_candidate != NULL); |
| candidate_.set_username(kCandidateUfragVoice); |
| candidate_.set_password(kCandidatePwdVoice); |
| EXPECT_TRUE(ice_candidate->candidate().IsEquivalent(candidate_)); |
| EXPECT_EQ(0, ice_candidate->sdp_mline_index()); |
| EXPECT_EQ(0u, jsep_desc_->candidates(1)->count()); |
| } |
| |
| // Test that we can add and remove candidates to a session description with |
| // MID. Removing candidates requires MID (transport_name). |
| TEST_F(JsepSessionDescriptionTest, AddAndRemoveCandidatesWithMid) { |
| // mid and m-line index don't match, in this case mid is preferred. |
| std::string mid = "video"; |
| JsepIceCandidate jsep_candidate(mid, 0, candidate_); |
| EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate)); |
| EXPECT_EQ(0u, jsep_desc_->candidates(0)->count()); |
| const IceCandidateCollection* ice_candidates = jsep_desc_->candidates(1); |
| ASSERT_TRUE(ice_candidates != NULL); |
| EXPECT_EQ(1u, ice_candidates->count()); |
| const IceCandidateInterface* ice_candidate = ice_candidates->at(0); |
| ASSERT_TRUE(ice_candidate != NULL); |
| candidate_.set_username(kCandidateUfragVideo); |
| candidate_.set_password(kCandidatePwdVideo); |
| EXPECT_TRUE(ice_candidate->candidate().IsEquivalent(candidate_)); |
| // The mline index should have been updated according to mid. |
| EXPECT_EQ(1, ice_candidate->sdp_mline_index()); |
| |
| std::vector<cricket::Candidate> candidates(1, candidate_); |
| candidates[0].set_transport_name(mid); |
| EXPECT_EQ(1u, jsep_desc_->RemoveCandidates(candidates)); |
| EXPECT_EQ(0u, jsep_desc_->candidates(0)->count()); |
| EXPECT_EQ(0u, jsep_desc_->candidates(1)->count()); |
| } |
| |
| TEST_F(JsepSessionDescriptionTest, AddCandidateAlreadyHasUfrag) { |
| candidate_.set_username(kCandidateUfrag); |
| candidate_.set_password(kCandidatePwd); |
| JsepIceCandidate jsep_candidate("audio", 0, candidate_); |
| EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate)); |
| const IceCandidateCollection* ice_candidates = jsep_desc_->candidates(0); |
| ASSERT_TRUE(ice_candidates != NULL); |
| EXPECT_EQ(1u, ice_candidates->count()); |
| const IceCandidateInterface* ice_candidate = ice_candidates->at(0); |
| ASSERT_TRUE(ice_candidate != NULL); |
| candidate_.set_username(kCandidateUfrag); |
| candidate_.set_password(kCandidatePwd); |
| EXPECT_TRUE(ice_candidate->candidate().IsEquivalent(candidate_)); |
| |
| EXPECT_EQ(0u, jsep_desc_->candidates(1)->count()); |
| } |
| |
| // Test that we can not add a candidate if there is no corresponding media |
| // content in the session description. |
| TEST_F(JsepSessionDescriptionTest, AddBadCandidate) { |
| JsepIceCandidate bad_candidate1("", 55, candidate_); |
| EXPECT_FALSE(jsep_desc_->AddCandidate(&bad_candidate1)); |
| |
| JsepIceCandidate bad_candidate2("some weird mid", 0, candidate_); |
| EXPECT_FALSE(jsep_desc_->AddCandidate(&bad_candidate2)); |
| } |
| |
| // Tests that repeatedly adding the same candidate, with or without credentials, |
| // does not increase the number of candidates in the description. |
| TEST_F(JsepSessionDescriptionTest, AddCandidateDuplicates) { |
| JsepIceCandidate jsep_candidate("", 0, candidate_); |
| EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate)); |
| EXPECT_EQ(1u, jsep_desc_->candidates(0)->count()); |
| |
| // Add the same candidate again. It should be ignored. |
| EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate)); |
| EXPECT_EQ(1u, jsep_desc_->candidates(0)->count()); |
| |
| // Create a new candidate, identical except that the ufrag and pwd are now |
| // populated. |
| candidate_.set_username(kCandidateUfragVoice); |
| candidate_.set_password(kCandidatePwdVoice); |
| JsepIceCandidate jsep_candidate_with_credentials("", 0, candidate_); |
| |
| // This should also be identified as redundant and ignored. |
| EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate_with_credentials)); |
| EXPECT_EQ(1u, jsep_desc_->candidates(0)->count()); |
| } |
| |
| // Test that we can serialize a JsepSessionDescription and deserialize it again. |
| TEST_F(JsepSessionDescriptionTest, SerializeDeserialize) { |
| std::string sdp = Serialize(jsep_desc_.get()); |
| |
| std::unique_ptr<SessionDescriptionInterface> parsed_jsep_desc( |
| DeSerialize(sdp)); |
| EXPECT_EQ(2u, parsed_jsep_desc->number_of_mediasections()); |
| |
| std::string parsed_sdp = Serialize(parsed_jsep_desc.get()); |
| EXPECT_EQ(sdp, parsed_sdp); |
| } |
| |
| // Tests that we can serialize and deserialize a JsepSesssionDescription |
| // with candidates. |
| TEST_F(JsepSessionDescriptionTest, SerializeDeserializeWithCandidates) { |
| std::string sdp = Serialize(jsep_desc_.get()); |
| |
| // Add a candidate and check that the serialized result is different. |
| JsepIceCandidate jsep_candidate("audio", 0, candidate_); |
| EXPECT_TRUE(jsep_desc_->AddCandidate(&jsep_candidate)); |
| std::string sdp_with_candidate = Serialize(jsep_desc_.get()); |
| EXPECT_NE(sdp, sdp_with_candidate); |
| |
| std::unique_ptr<SessionDescriptionInterface> parsed_jsep_desc( |
| DeSerialize(sdp_with_candidate)); |
| std::string parsed_sdp_with_candidate = Serialize(parsed_jsep_desc.get()); |
| |
| EXPECT_EQ(sdp_with_candidate, parsed_sdp_with_candidate); |
| } |
| |
| // TODO(zhihuang): Modify these tests. These are used to verify that after |
| // adding the candidates, the connection_address field is set correctly. Modify |
| // those so that the "connection address" is tested directly. |
| // Tests serialization of SDP with only IPv6 candidates and verifies that IPv6 |
| // is used as default address in c line according to preference. |
| TEST_F(JsepSessionDescriptionTest, SerializeSessionDescriptionWithIPv6Only) { |
| // Stun has a high preference than local host. |
| cricket::Candidate candidate1( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| rtc::SocketAddress("::1", 1234), kCandidatePriority, "", "", |
| cricket::STUN_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| cricket::Candidate candidate2( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| rtc::SocketAddress("::2", 1235), kCandidatePriority, "", "", |
| cricket::LOCAL_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| |
| JsepIceCandidate jice1("audio", 0, candidate1); |
| JsepIceCandidate jice2("audio", 0, candidate2); |
| JsepIceCandidate jice3("video", 0, candidate1); |
| JsepIceCandidate jice4("video", 0, candidate2); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice1)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice2)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice3)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice4)); |
| std::string message = Serialize(jsep_desc_.get()); |
| |
| // Should have a c line like this one. |
| EXPECT_NE(message.find("c=IN IP6 ::1"), std::string::npos); |
| // Shouldn't have a IP4 c line. |
| EXPECT_EQ(message.find("c=IN IP4"), std::string::npos); |
| } |
| |
| // Tests serialization of SDP with both IPv4 and IPv6 candidates and |
| // verifies that IPv4 is used as default address in c line even if the |
| // preference of IPv4 is lower. |
| TEST_F(JsepSessionDescriptionTest, |
| SerializeSessionDescriptionWithBothIPFamilies) { |
| cricket::Candidate candidate_v4( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| rtc::SocketAddress("192.168.1.5", 1234), kCandidatePriority, "", "", |
| cricket::STUN_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| cricket::Candidate candidate_v6( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| rtc::SocketAddress("::1", 1234), kCandidatePriority, "", "", |
| cricket::LOCAL_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| |
| JsepIceCandidate jice_v4("audio", 0, candidate_v4); |
| JsepIceCandidate jice_v6("audio", 0, candidate_v6); |
| JsepIceCandidate jice_v4_video("video", 0, candidate_v4); |
| JsepIceCandidate jice_v6_video("video", 0, candidate_v6); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice_v4)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice_v6)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice_v4_video)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice_v6_video)); |
| std::string message = Serialize(jsep_desc_.get()); |
| |
| // Should have a c line like this one. |
| EXPECT_NE(message.find("c=IN IP4 192.168.1.5"), std::string::npos); |
| // Shouldn't have a IP6 c line. |
| EXPECT_EQ(message.find("c=IN IP6"), std::string::npos); |
| } |
| |
| // Tests serialization of SDP with both UDP and TCP candidates and |
| // verifies that UDP is used as default address in c line even if the |
| // preference of UDP is lower. |
| TEST_F(JsepSessionDescriptionTest, |
| SerializeSessionDescriptionWithBothProtocols) { |
| // Stun has a high preference than local host. |
| cricket::Candidate candidate1( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "tcp", |
| rtc::SocketAddress("::1", 1234), kCandidatePriority, "", "", |
| cricket::STUN_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| cricket::Candidate candidate2( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| rtc::SocketAddress("fe80::1234:5678:abcd:ef12", 1235), kCandidatePriority, |
| "", "", cricket::LOCAL_PORT_TYPE, kCandidateGeneration, |
| kCandidateFoundation); |
| |
| JsepIceCandidate jice1("audio", 0, candidate1); |
| JsepIceCandidate jice2("audio", 0, candidate2); |
| JsepIceCandidate jice3("video", 0, candidate1); |
| JsepIceCandidate jice4("video", 0, candidate2); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice1)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice2)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice3)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice4)); |
| std::string message = Serialize(jsep_desc_.get()); |
| |
| // Should have a c line like this one. |
| EXPECT_NE(message.find("c=IN IP6 fe80::1234:5678:abcd:ef12"), |
| std::string::npos); |
| // Shouldn't have a IP4 c line. |
| EXPECT_EQ(message.find("c=IN IP4"), std::string::npos); |
| } |
| |
| // Tests serialization of SDP with only TCP candidates and verifies that |
| // null IPv4 is used as default address in c line. |
| TEST_F(JsepSessionDescriptionTest, SerializeSessionDescriptionWithTCPOnly) { |
| // Stun has a high preference than local host. |
| cricket::Candidate candidate1( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "tcp", |
| rtc::SocketAddress("::1", 1234), kCandidatePriority, "", "", |
| cricket::STUN_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| cricket::Candidate candidate2( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "tcp", |
| rtc::SocketAddress("::2", 1235), kCandidatePriority, "", "", |
| cricket::LOCAL_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| |
| JsepIceCandidate jice1("audio", 0, candidate1); |
| JsepIceCandidate jice2("audio", 0, candidate2); |
| JsepIceCandidate jice3("video", 0, candidate1); |
| JsepIceCandidate jice4("video", 0, candidate2); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice1)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice2)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice3)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice4)); |
| |
| std::string message = Serialize(jsep_desc_.get()); |
| EXPECT_EQ(message.find("c=IN IP6 ::3"), std::string::npos); |
| // Should have a c line like this one when no any default exists. |
| EXPECT_NE(message.find("c=IN IP4 0.0.0.0"), std::string::npos); |
| } |
| |
| // Tests that the connection address will be correctly set when the Candidate is |
| // removed. |
| TEST_F(JsepSessionDescriptionTest, RemoveCandidateAndSetConnectionAddress) { |
| cricket::Candidate candidate1( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| rtc::SocketAddress("::1", 1234), kCandidatePriority, "", "", |
| cricket::LOCAL_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| candidate1.set_transport_name("audio"); |
| |
| cricket::Candidate candidate2( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "tcp", |
| rtc::SocketAddress("::2", 1235), kCandidatePriority, "", "", |
| cricket::LOCAL_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| candidate2.set_transport_name("audio"); |
| |
| cricket::Candidate candidate3( |
| cricket::ICE_CANDIDATE_COMPONENT_RTP, "udp", |
| rtc::SocketAddress("192.168.1.1", 1236), kCandidatePriority, "", "", |
| cricket::LOCAL_PORT_TYPE, kCandidateGeneration, kCandidateFoundation); |
| candidate3.set_transport_name("audio"); |
| |
| JsepIceCandidate jice1("audio", 0, candidate1); |
| JsepIceCandidate jice2("audio", 0, candidate2); |
| JsepIceCandidate jice3("audio", 0, candidate3); |
| |
| size_t audio_index = 0; |
| auto media_desc = static_cast<cricket::MediaContentDescription*>( |
| jsep_desc_->description()->contents()[audio_index].description); |
| |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice1)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice2)); |
| ASSERT_TRUE(jsep_desc_->AddCandidate(&jice3)); |
| |
| std::vector<cricket::Candidate> candidates; |
| EXPECT_EQ("192.168.1.1:1236", media_desc->connection_address().ToString()); |
| |
| candidates.push_back(candidate3); |
| ASSERT_TRUE(jsep_desc_->RemoveCandidates(candidates)); |
| EXPECT_EQ("[::1]:1234", media_desc->connection_address().ToString()); |
| |
| candidates.clear(); |
| candidates.push_back(candidate2); |
| ASSERT_TRUE(jsep_desc_->RemoveCandidates(candidates)); |
| EXPECT_EQ("[::1]:1234", media_desc->connection_address().ToString()); |
| |
| candidates.clear(); |
| candidates.push_back(candidate1); |
| ASSERT_TRUE(jsep_desc_->RemoveCandidates(candidates)); |
| EXPECT_EQ("0.0.0.0:9", media_desc->connection_address().ToString()); |
| } |