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/*
* Copyright (c) 2019 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 "test/peer_scenario/signaling_route.h"
#include <memory>
#include "test/network/network_emulation_manager.h"
namespace webrtc {
namespace test {
namespace {
constexpr size_t kIcePacketSize = 400;
constexpr size_t kSdpPacketSize = 1200;
struct IceMessage {
IceMessage() = default;
explicit IceMessage(const IceCandidateInterface* candidate)
: sdp_mid(candidate->sdp_mid()),
sdp_mline_index(candidate->sdp_mline_index()) {
RTC_CHECK(candidate->ToString(&sdp_line));
}
std::unique_ptr<IceCandidateInterface> AsCandidate() const {
SdpParseError err;
std::unique_ptr<IceCandidateInterface> candidate(
CreateIceCandidate(sdp_mid, sdp_mline_index, sdp_line, &err));
RTC_CHECK(candidate) << "Failed to parse: \"" << err.line
<< "\". Reason: " << err.description;
return candidate;
}
std::string sdp_mid;
int sdp_mline_index;
std::string sdp_line;
};
void StartIceSignalingForRoute(PeerScenarioClient* caller,
PeerScenarioClient* callee,
CrossTrafficRoute* send_route) {
caller->handlers()->on_ice_candidate.push_back(
[=](const IceCandidateInterface* candidate) {
IceMessage msg(candidate);
send_route->NetworkDelayedAction(kIcePacketSize, [callee, msg]() {
callee->thread()->PostTask(
[callee, msg]() { callee->AddIceCandidate(msg.AsCandidate()); });
});
});
}
void StartSdpNegotiation(
PeerScenarioClient* caller,
PeerScenarioClient* callee,
CrossTrafficRoute* send_route,
CrossTrafficRoute* ret_route,
std::function<void(SessionDescriptionInterface* offer)> munge_offer,
std::function<void(SessionDescriptionInterface*)> modify_offer,
std::function<void(const SessionDescriptionInterface&)> exchange_finished) {
caller->CreateAndSetSdp(munge_offer, [=](std::string sdp_offer) {
if (modify_offer) {
auto offer = CreateSessionDescription(SdpType::kOffer, sdp_offer);
modify_offer(offer.get());
RTC_CHECK(offer->ToString(&sdp_offer));
}
send_route->NetworkDelayedAction(kSdpPacketSize, [=] {
callee->SetSdpOfferAndGetAnswer(sdp_offer, [=](std::string answer) {
ret_route->NetworkDelayedAction(kSdpPacketSize, [=] {
caller->SetSdpAnswer(std::move(answer), std::move(exchange_finished));
});
});
});
});
}
} // namespace
SignalingRoute::SignalingRoute(PeerScenarioClient* caller,
PeerScenarioClient* callee,
CrossTrafficRoute* send_route,
CrossTrafficRoute* ret_route)
: caller_(caller),
callee_(callee),
send_route_(send_route),
ret_route_(ret_route) {}
void SignalingRoute::StartIceSignaling() {
StartIceSignalingForRoute(caller_, callee_, send_route_);
StartIceSignalingForRoute(callee_, caller_, ret_route_);
}
void SignalingRoute::NegotiateSdp(
std::function<void(SessionDescriptionInterface*)> munge_offer,
std::function<void(SessionDescriptionInterface*)> modify_offer,
std::function<void(const SessionDescriptionInterface&)> exchange_finished) {
StartSdpNegotiation(caller_, callee_, send_route_, ret_route_, munge_offer,
modify_offer, exchange_finished);
}
void SignalingRoute::NegotiateSdp(
std::function<void(SessionDescriptionInterface*)> modify_offer,
std::function<void(const SessionDescriptionInterface&)> exchange_finished) {
NegotiateSdp({}, modify_offer, exchange_finished);
}
void SignalingRoute::NegotiateSdp(
std::function<void(const SessionDescriptionInterface&)> exchange_finished) {
NegotiateSdp({}, {}, exchange_finished);
}
} // namespace test
} // namespace webrtc
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