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/*
* libjingle
* Copyright 2012, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string>
#include "talk/app/webrtc/jsepicecandidate.h"
#include "talk/app/webrtc/jsepsessiondescription.h"
#include "webrtc/p2p/base/candidate.h"
#include "webrtc/p2p/base/constants.h"
#include "webrtc/p2p/base/sessiondescription.h"
#include "talk/session/media/mediasession.h"
#include "webrtc/base/gunit.h"
#include "webrtc/base/helpers.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/base/ssladapter.h"
#include "webrtc/base/stringencode.h"
using webrtc::IceCandidateCollection;
using webrtc::IceCandidateInterface;
using webrtc::JsepIceCandidate;
using webrtc::JsepSessionDescription;
using webrtc::SessionDescriptionInterface;
using rtc::scoped_ptr;
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";
// 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
scoped_ptr<cricket::AudioContentDescription> audio(
new cricket::AudioContentDescription());
// VideoContentDescription
scoped_ptr<cricket::VideoContentDescription> video(
new cricket::VideoContentDescription());
audio->AddCodec(cricket::AudioCodec(103, "ISAC", 16000, 0, 0, 0));
desc->AddContent(cricket::CN_AUDIO, cricket::NS_JINGLE_RTP,
audio.release());
video->AddCodec(cricket::VideoCodec(120, "VP8", 640, 480, 30, 0));
desc->AddContent(cricket::CN_VIDEO, cricket::NS_JINGLE_RTP,
video.release());
EXPECT_TRUE(desc->AddTransportInfo(
cricket::TransportInfo(
cricket::CN_AUDIO,
cricket::TransportDescription(
cricket::NS_GINGLE_P2P,
std::vector<std::string>(),
kCandidateUfragVoice, kCandidatePwdVoice,
cricket::ICEMODE_FULL,
cricket::CONNECTIONROLE_NONE,
NULL, cricket::Candidates()))));
EXPECT_TRUE(desc->AddTransportInfo(
cricket::TransportInfo(cricket::CN_VIDEO,
cricket::TransportDescription(
cricket::NS_GINGLE_P2P,
std::vector<std::string>(),
kCandidateUfragVideo, kCandidatePwdVideo,
cricket::ICEMODE_FULL,
cricket::CONNECTIONROLE_NONE,
NULL, cricket::Candidates()))));
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("rtp", cricket::ICE_CANDIDATE_COMPONENT_RTP,
"udp", address, 1, "",
"", "local", "eth0", 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(desc->Initialize(sdp, NULL));
return desc;
}
cricket::Candidate candidate_;
rtc::scoped_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.
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_F(JsepSessionDescriptionTest, AddCandidateWithMid) {
// mid and m-line index don't match, in this case mid is preferred.
JsepIceCandidate jsep_candidate("video", 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());
}
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());
scoped_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);
scoped_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);
}
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