sipcall.cpp

Go to the documentation of this file.

/*
 *  Copyright (C) 2004-2025 Savoir-faire Linux Inc.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 
#include "call_factory.h"
#include "sip/sipcall.h"
#include "sip/sipaccount.h"
#include "sip/sipaccountbase.h"
#include "sip/sipvoiplink.h"
#include "jamidht/jamiaccount.h"
#include "logger.h"
#include "sdp.h"
#include "manager.h"
#include "string_utils.h"
 
#include "connectivity/sip_utils.h"
#include "audio/audio_rtp_session.h"
#include "system_codec_container.h"
#include "im/instant_messaging.h"
#include "jami/account_const.h"
#include "jami/call_const.h"
#include "jami/media_const.h"
#include "client/ring_signal.h"
#include "pjsip-ua/sip_inv.h"
 
#ifdef ENABLE_PLUGIN
#include "plugin/jamipluginmanager.h"
#endif
 
#ifdef ENABLE_VIDEO
#include "client/videomanager.h"
#include "video/video_rtp_session.h"
#include "jami/videomanager_interface.h"
#include <chrono>
#include <libavutil/display.h>
#include <video/sinkclient.h>
#include "media/video/video_mixer.h"
#endif
#include "audio/ringbufferpool.h"
#include "jamidht/channeled_transport.h"
 
#include "errno.h"
 
#include <dhtnet/upnp/upnp_control.h>
#include <dhtnet/ice_transport_factory.h>
 
#include <opendht/crypto.h>
#include <opendht/thread_pool.h>
#include <fmt/ranges.h>
 
#include "tracepoint.h"
 
#include "media/media_decoder.h"
 
namespace jami {
 
using sip_utils::CONST_PJ_STR;
using namespace libjami::Call;
 
#ifdef ENABLE_VIDEO
static DeviceParams
getVideoSettings()
{
    if (auto videomon = jami::getVideoDeviceMonitor())
        return videomon->getDeviceParams(videomon->getDefaultDevice());
    return DeviceParams {};
}
#endif
 
static constexpr std::chrono::seconds DEFAULT_ICE_INIT_TIMEOUT {35}; // seconds
static constexpr std::chrono::milliseconds EXPECTED_ICE_INIT_MAX_TIME {5000};
static constexpr std::chrono::seconds DEFAULT_ICE_NEGO_TIMEOUT {60}; // seconds
static constexpr std::chrono::milliseconds MS_BETWEEN_2_KEYFRAME_REQUEST {1000};
static constexpr int ICE_COMP_ID_RTP {1};
static constexpr int ICE_COMP_COUNT_PER_STREAM {2};
static constexpr auto MULTISTREAM_REQUIRED_VERSION_STR = "10.0.2"sv;
static const std::vector<unsigned> MULTISTREAM_REQUIRED_VERSION
    = split_string_to_unsigned(MULTISTREAM_REQUIRED_VERSION_STR, '.');
static constexpr auto MULTIICE_REQUIRED_VERSION_STR = "13.3.0"sv;
static const std::vector<unsigned> MULTIICE_REQUIRED_VERSION
    = split_string_to_unsigned(MULTIICE_REQUIRED_VERSION_STR, '.');
static constexpr auto NEW_CONFPROTOCOL_VERSION_STR = "13.1.0"sv;
static const std::vector<unsigned> NEW_CONFPROTOCOL_VERSION
    = split_string_to_unsigned(NEW_CONFPROTOCOL_VERSION_STR, '.');
static constexpr auto REUSE_ICE_IN_REINVITE_REQUIRED_VERSION_STR = "11.0.2"sv;
static const std::vector<unsigned> REUSE_ICE_IN_REINVITE_REQUIRED_VERSION
    = split_string_to_unsigned(REUSE_ICE_IN_REINVITE_REQUIRED_VERSION_STR, '.');
static constexpr auto MULTIAUDIO_REQUIRED_VERSION_STR = "13.11.0"sv;
static const std::vector<unsigned> MULTIAUDIO_REQUIRED_VERSION
    = split_string_to_unsigned(MULTIAUDIO_REQUIRED_VERSION_STR, '.');
 
SIPCall::SIPCall(const std::shared_ptr<SIPAccountBase>& account,
                 const std::string& callId,
                 Call::CallType type,
                 const std::vector<libjami::MediaMap>& mediaList)
    : Call(account, callId, type)
    , sdp_(new Sdp(callId))
    , enableIce_(account->isIceForMediaEnabled())
    , srtpEnabled_(account->isSrtpEnabled())
{
    jami_tracepoint(call_start, callId.c_str());
 
    if (account->getUPnPActive())
        upnp_ = std::make_shared<dhtnet::upnp::Controller>(Manager::instance().upnpContext());
 
    setCallMediaLocal();
 
    // Set the media caps.
    sdp_->setLocalMediaCapabilities(MediaType::MEDIA_AUDIO,
                                    account->getActiveAccountCodecInfoList(MEDIA_AUDIO));
#ifdef ENABLE_VIDEO
    sdp_->setLocalMediaCapabilities(MediaType::MEDIA_VIDEO,
                                    account->getActiveAccountCodecInfoList(MEDIA_VIDEO));
#endif
 
    auto mediaAttrList = MediaAttribute::buildMediaAttributesList(mediaList, isSrtpEnabled());
 
    if (mediaAttrList.size() == 0) {
        if (type_ == Call::CallType::INCOMING) {
            // Handle incoming call without media offer.
            JAMI_WARN(
                "[call:%s] No media offered in the incoming invite. An offer will be provided in "
                "the answer",
                getCallId().c_str());
            mediaAttrList = getSIPAccount()->createDefaultMediaList(false,
                                                                    getState() == CallState::HOLD);
        } else {
            JAMI_WARN("[call:%s] Creating an outgoing call with empty offer", getCallId().c_str());
        }
    }
 
    JAMI_DEBUG("[call:{:s}] Create a new [{:s}] SIP call with {:d} media",
               getCallId(),
               type == Call::CallType::INCOMING
                   ? "INCOMING"
                   : (type == Call::CallType::OUTGOING ? "OUTGOING" : "MISSED"),
               mediaList.size());
 
    initMediaStreams(mediaAttrList);
}
 
SIPCall::~SIPCall()
{
    std::lock_guard lk {callMutex_};
 
    setSipTransport({});
    setInviteSession(); // prevents callback usage
 
#ifdef ENABLE_VIDEO
    closeMediaPlayer(mediaPlayerId_);
#endif
}
 
int
SIPCall::findRtpStreamIndex(const std::string& label) const
{
    const auto iter = std::find_if(rtpStreams_.begin(),
                                   rtpStreams_.end(),
                                   [&label](const RtpStream& rtp) {
                                       return label == rtp.mediaAttribute_->label_;
                                   });
 
    // Return the index if there is a match.
    if (iter != rtpStreams_.end())
        return std::distance(rtpStreams_.begin(), iter);
 
    // No match found.
    return -1;
}
 
void
SIPCall::createRtpSession(RtpStream& stream)
{
    if (not stream.mediaAttribute_)
        throw std::runtime_error("Missing media attribute");
 
    // To get audio_0 ; video_0
    auto streamId = sip_utils::streamId(id_, stream.mediaAttribute_->label_);
    if (stream.mediaAttribute_->type_ == MediaType::MEDIA_AUDIO) {
        stream.rtpSession_ = std::make_shared<AudioRtpSession>(id_, streamId, recorder_);
    }
#ifdef ENABLE_VIDEO
    else if (stream.mediaAttribute_->type_ == MediaType::MEDIA_VIDEO) {
        stream.rtpSession_ = std::make_shared<video::VideoRtpSession>(id_,
                                                                      streamId,
                                                                      getVideoSettings(),
                                                                      recorder_);
        std::static_pointer_cast<video::VideoRtpSession>(stream.rtpSession_)->setRotation(rotation_);
    }
#endif
    else {
        throw std::runtime_error("Unsupported media type");
    }
 
    // Must be valid at this point.
    if (not stream.rtpSession_)
        throw std::runtime_error("Failed to create RTP session");
    ;
}
 
void
SIPCall::configureRtpSession(const std::shared_ptr<RtpSession>& rtpSession,
                             const std::shared_ptr<MediaAttribute>& mediaAttr,
                             const MediaDescription& localMedia,
                             const MediaDescription& remoteMedia)
{
    JAMI_DBG("[call:%s] Configuring [%s] RTP session",
             getCallId().c_str(),
             MediaAttribute::mediaTypeToString(mediaAttr->type_));
 
    if (not rtpSession)
        throw std::runtime_error("Must have a valid RTP session");
 
    // Configure the media stream
    auto new_mtu = sipTransport_->getTlsMtu();
    rtpSession->setMtu(new_mtu);
    rtpSession->updateMedia(remoteMedia, localMedia);
 
    // Mute/un-mute media
    if (mediaAttr->muted_) {
        rtpSession->setMuted(true);
        // TODO. Setting mute to true should be enough to mute.
        // Kept for backward compatiblity.
        rtpSession->setMediaSource("");
    } else {
        rtpSession->setMuted(false);
        rtpSession->setMediaSource(mediaAttr->sourceUri_);
    }
 
    rtpSession->setSuccessfulSetupCb([w = weak()](MediaType, bool) {
        // This sends SIP messages on socket, so move to io
        dht::ThreadPool::io().run([w = std::move(w)] {
            if (auto thisPtr = w.lock())
                thisPtr->rtpSetupSuccess();
        });
    });
 
    if (localMedia.type == MediaType::MEDIA_AUDIO) {
        setupVoiceCallback(rtpSession);
    }
 
#ifdef ENABLE_VIDEO
    if (localMedia.type == MediaType::MEDIA_VIDEO) {
        auto videoRtp = std::dynamic_pointer_cast<video::VideoRtpSession>(rtpSession);
        assert(videoRtp && mediaAttr);
        auto streamIdx = findRtpStreamIndex(mediaAttr->label_);
        videoRtp->setRequestKeyFrameCallback([w = weak(), streamIdx] {
            // This sends SIP messages on socket, so move to I/O
            dht::ThreadPool::io().run([w = std::move(w), streamIdx] {
                if (auto thisPtr = w.lock())
                    thisPtr->requestKeyframe(streamIdx);
            });
        });
        videoRtp->setChangeOrientationCallback([w = weak(), streamIdx](int angle) {
            // This sends SIP messages on socket, so move to I/O
            dht::ThreadPool::io().run([w, angle, streamIdx] {
                if (auto thisPtr = w.lock())
                    thisPtr->setVideoOrientation(streamIdx, angle);
            });
        });
    }
#endif
}
 
void
SIPCall::setupVoiceCallback(const std::shared_ptr<RtpSession>& rtpSession)
{
    // need to downcast to access setVoiceCallback
    auto audioRtp = std::dynamic_pointer_cast<AudioRtpSession>(rtpSession);
 
    audioRtp->setVoiceCallback([w = weak()](bool voice) {
        // this is called whenever voice is detected on the local audio
 
        runOnMainThread([w, voice] {
            if (auto thisPtr = w.lock()) {
                // TODO: once we support multiple streams, change this to the right one
                std::string streamId = "";
 
#ifdef ENABLE_VIDEO
                if (auto videoManager = Manager::instance().getVideoManager()) {
                    if (not videoManager->videoDeviceMonitor.getDeviceList().empty()) {
                        // if we have a video device
                        streamId = sip_utils::streamId("", sip_utils::DEFAULT_VIDEO_STREAMID);
                    }
                }
#endif
 
                // send our local voice activity
                if (auto conference = thisPtr->conf_.lock()) {
                    // we are in a conference
 
                    // updates conference info and sends it to others via ConfInfo
                    // (only if there was a change)
                    // also emits signal with updated conference info
                    conference->setVoiceActivity(streamId, voice);
                } else {
                    // we are in a one-to-one call
                    // send voice activity over SIP
                    // TODO: change the streamID once multiple streams are supported
                    thisPtr->sendVoiceActivity("-1", voice);
 
                    // TODO: maybe emit signal here for local voice activity
                }
            } else {
                JAMI_ERR("Voice activity callback unable to lock weak ptr to SIPCall");
            }
        });
    });
}
 
std::shared_ptr<SIPAccountBase>
SIPCall::getSIPAccount() const
{
    return std::static_pointer_cast<SIPAccountBase>(getAccount().lock());
}
 
#ifdef ENABLE_PLUGIN
void
SIPCall::createCallAVStreams()
{
#ifdef ENABLE_VIDEO
    for (const auto& videoRtp : getRtpSessionList(MediaType::MEDIA_VIDEO)) {
        if (std::static_pointer_cast<video::VideoRtpSession>(videoRtp)->hasConference()) {
            clearCallAVStreams();
            return;
        }
    }
#endif
 
    auto baseId = getCallId();
    auto mediaMap = [](const std::shared_ptr<jami::MediaFrame>& m) -> AVFrame* {
        return m->pointer();
    };
 
    for (const auto& rtpSession : getRtpSessionList()) {
        auto isVideo = rtpSession->getMediaType() == MediaType::MEDIA_VIDEO;
        auto streamType = isVideo ? StreamType::video : StreamType::audio;
        StreamData previewStreamData {baseId, false, streamType, getPeerNumber(), getAccountId()};
        StreamData receiveStreamData {baseId, true, streamType, getPeerNumber(), getAccountId()};
#ifdef ENABLE_VIDEO
        if (isVideo) {
            // Preview
            auto videoRtp = std::static_pointer_cast<video::VideoRtpSession>(rtpSession);
            if (auto& videoPreview = videoRtp->getVideoLocal())
                createCallAVStream(previewStreamData,
                                   *videoPreview,
                                   std::make_shared<MediaStreamSubject>(mediaMap));
            // Receive
            if (auto& videoReceive = videoRtp->getVideoReceive())
                createCallAVStream(receiveStreamData,
                                   *videoReceive,
                                   std::make_shared<MediaStreamSubject>(mediaMap));
        } else {
#endif
            auto audioRtp = std::static_pointer_cast<AudioRtpSession>(rtpSession);
            // Preview
            if (auto& localAudio = audioRtp->getAudioLocal())
                createCallAVStream(previewStreamData,
                                   *localAudio,
                                   std::make_shared<MediaStreamSubject>(mediaMap));
            // Receive
            if (auto& audioReceive = audioRtp->getAudioReceive())
                createCallAVStream(receiveStreamData,
                                   (AVMediaStream&) *audioReceive,
                                   std::make_shared<MediaStreamSubject>(mediaMap));
#ifdef ENABLE_VIDEO
        }
#endif
    }
}
 
void
SIPCall::createCallAVStream(const StreamData& StreamData,
                            AVMediaStream& streamSource,
                            const std::shared_ptr<MediaStreamSubject>& mediaStreamSubject)
{
    const std::string AVStreamId = StreamData.id + std::to_string(static_cast<int>(StreamData.type))
                                   + std::to_string(StreamData.direction);
    std::lock_guard lk(avStreamsMtx_);
    auto it = callAVStreams.find(AVStreamId);
    if (it != callAVStreams.end())
        return;
    it = callAVStreams.insert(it, {AVStreamId, mediaStreamSubject});
    streamSource.attachPriorityObserver(it->second);
    jami::Manager::instance()
        .getJamiPluginManager()
        .getCallServicesManager()
        .createAVSubject(StreamData, it->second);
}
 
void
SIPCall::clearCallAVStreams()
{
    std::lock_guard lk(avStreamsMtx_);
    callAVStreams.clear();
}
#endif // ENABLE_PLUGIN
 
void
SIPCall::setCallMediaLocal()
{
    if (localAudioPort_ == 0
#ifdef ENABLE_VIDEO
        || localVideoPort_ == 0
#endif
    )
        generateMediaPorts();
}
 
void
SIPCall::generateMediaPorts()
{
    auto account = getSIPAccount();
    if (!account) {
        JAMI_ERR("No account detected");
        return;
    }
 
    // TODO. Setting specfic range for RTP ports is obsolete, in
    // particular in the context of ICE.
 
    // Reference: http://www.cs.columbia.edu/~hgs/rtp/faq.html#ports
    // We only want to set ports to new values if they haven't been set
    const unsigned callLocalAudioPort = account->generateAudioPort();
    if (localAudioPort_ != 0)
        account->releasePort(localAudioPort_);
    localAudioPort_ = callLocalAudioPort;
    sdp_->setLocalPublishedAudioPorts(callLocalAudioPort,
                                      rtcpMuxEnabled_ ? 0 : callLocalAudioPort + 1);
 
#ifdef ENABLE_VIDEO
    // https://projects.savoirfairelinux.com/issues/17498
    const unsigned int callLocalVideoPort = account->generateVideoPort();
    if (localVideoPort_ != 0)
        account->releasePort(localVideoPort_);
    // this should already be guaranteed by SIPAccount
    assert(localAudioPort_ != callLocalVideoPort);
    localVideoPort_ = callLocalVideoPort;
    sdp_->setLocalPublishedVideoPorts(callLocalVideoPort,
                                      rtcpMuxEnabled_ ? 0 : callLocalVideoPort + 1);
#endif
}
 
const std::string&
SIPCall::getContactHeader() const
{
    return contactHeader_;
}
 
void
SIPCall::setSipTransport(const std::shared_ptr<SipTransport>& transport,
                         const std::string& contactHdr)
{
    if (transport != sipTransport_) {
        JAMI_DBG("[call:%s] Setting transport to [%p]", getCallId().c_str(), transport.get());
    }
 
    sipTransport_ = transport;
    contactHeader_ = contactHdr;
 
    if (not transport) {
        // Done.
        return;
    }
 
    if (contactHeader_.empty()) {
        JAMI_WARN("[call:%s] Contact header is empty", getCallId().c_str());
    }
 
    if (isSrtpEnabled() and not sipTransport_->isSecure()) {
        JAMI_WARN("[call:%s] Crypto (SRTP) is negotiated over an unencrypted signaling channel",
                  getCallId().c_str());
    }
 
    if (not isSrtpEnabled() and sipTransport_->isSecure()) {
        JAMI_WARN("[call:%s] The signaling channel is encrypted but the media is unencrypted",
                  getCallId().c_str());
    }
 
    const auto list_id = reinterpret_cast<uintptr_t>(this);
    sipTransport_->removeStateListener(list_id);
 
    // Listen for transport destruction
    sipTransport_->addStateListener(
        list_id, [wthis_ = weak()](pjsip_transport_state state, const pjsip_transport_state_info*) {
            if (auto this_ = wthis_.lock()) {
                JAMI_DBG("[call:%s] SIP transport state [%i] - connection state [%u]",
                         this_->getCallId().c_str(),
                         state,
                         static_cast<unsigned>(this_->getConnectionState()));
 
                // End the call if the SIP transport was shut down
                auto isAlive = SipTransport::isAlive(state);
                if (not isAlive and this_->getConnectionState() != ConnectionState::DISCONNECTED) {
                    JAMI_WARN("[call:%s] Ending call because underlying SIP transport was closed",
                              this_->getCallId().c_str());
                    this_->stopAllMedia();
                    this_->detachAudioFromConference();
                    this_->onFailure(ECONNRESET);
                }
            }
        });
}
 
void
SIPCall::requestReinvite(const std::vector<MediaAttribute>& mediaAttrList, bool needNewIce)
{
    JAMI_DBG("[call:%s] Sending a SIP re-invite to request media change", getCallId().c_str());
 
    if (isWaitingForIceAndMedia_) {
        remainingRequest_ = Request::SwitchInput;
    } else {
        if (SIPSessionReinvite(mediaAttrList, needNewIce) == PJ_SUCCESS and reinvIceMedia_) {
            isWaitingForIceAndMedia_ = true;
        }
    }
}
 
int
SIPCall::SIPSessionReinvite(const std::vector<MediaAttribute>& mediaAttrList, bool needNewIce)
{
    assert(not mediaAttrList.empty());
 
    std::lock_guard lk {callMutex_};
 
    // Do nothing if no invitation processed yet
    if (not inviteSession_ or inviteSession_->invite_tsx)
        return PJ_SUCCESS;
 
    JAMI_DBG("[call:%s] Preparing and sending a re-invite (state=%s)",
             getCallId().c_str(),
             pjsip_inv_state_name(inviteSession_->state));
    JAMI_DBG("[call:%s] New ICE required for this re-invite: [%s]",
             getCallId().c_str(),
             needNewIce ? "Yes" : "No");
 
    // Generate new ports to receive the new media stream
    // LibAV doesn't discriminate SSRCs and will be confused about Seq changes on a given port
    generateMediaPorts();
 
    sdp_->clearIce();
    sdp_->setActiveRemoteSdpSession(nullptr);
    sdp_->setActiveLocalSdpSession(nullptr);
 
    auto acc = getSIPAccount();
    if (not acc) {
        JAMI_ERR("No account detected");
        return !PJ_SUCCESS;
    }
 
    if (not sdp_->createOffer(mediaAttrList))
        return !PJ_SUCCESS;
 
    if (isIceEnabled() and needNewIce) {
        if (not createIceMediaTransport(true) or not initIceMediaTransport(true)) {
            return !PJ_SUCCESS;
        }
        addLocalIceAttributes();
        // Media transport changed, must restart the media.
        mediaRestartRequired_ = true;
    }
 
    pjsip_tx_data* tdata;
    auto local_sdp = sdp_->getLocalSdpSession();
    auto result = pjsip_inv_reinvite(inviteSession_.get(), nullptr, local_sdp, &tdata);
    if (result == PJ_SUCCESS) {
        if (!tdata)
            return PJ_SUCCESS;
 
        // Add user-agent header
        sip_utils::addUserAgentHeader(acc->getUserAgentName(), tdata);
 
        result = pjsip_inv_send_msg(inviteSession_.get(), tdata);
        if (result == PJ_SUCCESS)
            return PJ_SUCCESS;
        JAMI_ERR("[call:%s] Failed to send REINVITE msg (pjsip: %s)",
                 getCallId().c_str(),
                 sip_utils::sip_strerror(result).c_str());
        // Canceling internals without sending (anyways the send has just failed!)
        pjsip_inv_cancel_reinvite(inviteSession_.get(), &tdata);
    } else
        JAMI_ERR("[call:%s] Failed to create REINVITE msg (pjsip: %s)",
                 getCallId().c_str(),
                 sip_utils::sip_strerror(result).c_str());
 
    return !PJ_SUCCESS;
}
 
int
SIPCall::SIPSessionReinvite()
{
    auto mediaList = getMediaAttributeList();
    return SIPSessionReinvite(mediaList, isNewIceMediaRequired(mediaList));
}
 
void
SIPCall::sendSIPInfo(std::string_view body, std::string_view subtype)
{
    std::lock_guard lk {callMutex_};
    if (not inviteSession_ or not inviteSession_->dlg)
        throw VoipLinkException("Unable to get invite dialog");
 
    constexpr pj_str_t methodName = CONST_PJ_STR("INFO");
    constexpr pj_str_t type = CONST_PJ_STR("application");
 
    pjsip_method method;
    pjsip_method_init_np(&method, (pj_str_t*) &methodName);
 
    /* Create request message. */
    pjsip_tx_data* tdata;
    if (pjsip_dlg_create_request(inviteSession_->dlg, &method, -1, &tdata) != PJ_SUCCESS) {
        JAMI_ERR("[call:%s] Unable to create dialog", getCallId().c_str());
        return;
    }
 
    /* Create "application/<subtype>" message body. */
    pj_str_t content = CONST_PJ_STR(body);
    pj_str_t pj_subtype = CONST_PJ_STR(subtype);
    tdata->msg->body = pjsip_msg_body_create(tdata->pool, &type, &pj_subtype, &content);
    if (tdata->msg->body == NULL)
        pjsip_tx_data_dec_ref(tdata);
    else
        pjsip_dlg_send_request(inviteSession_->dlg,
                               tdata,
                               Manager::instance().sipVoIPLink().getModId(),
                               NULL);
}
 
void
SIPCall::updateRecState(bool state)
{
    std::string BODY = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
                       "<media_control><vc_primitive><to_encoder>"
                       "<recording_state="
                       + std::to_string(state)
                       + "/>"
                         "</to_encoder></vc_primitive></media_control>";
    // see https://tools.ietf.org/html/rfc5168 for XML Schema for Media Control details
 
    JAMI_DBG("Sending recording state via SIP INFO");
 
    try {
        sendSIPInfo(BODY, "media_control+xml");
    } catch (const std::exception& e) {
        JAMI_ERR("Error sending recording state: %s", e.what());
    }
}
 
void
SIPCall::requestKeyframe(int streamIdx)
{
    auto now = clock::now();
    if ((now - lastKeyFrameReq_) < MS_BETWEEN_2_KEYFRAME_REQUEST
        and lastKeyFrameReq_ != time_point::min())
        return;
 
    std::string streamIdPart;
    if (streamIdx != -1)
        streamIdPart = fmt::format("<stream_id>{}</stream_id>", streamIdx);
    std::string BODY = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
                       "<media_control><vc_primitive> "
                       + streamIdPart + "<to_encoder>"
                       + "<picture_fast_update/>"
                         "</to_encoder></vc_primitive></media_control>";
    JAMI_DBG("Sending video keyframe request via SIP INFO");
    try {
        sendSIPInfo(BODY, "media_control+xml");
    } catch (const std::exception& e) {
        JAMI_ERR("Error sending video keyframe request: %s", e.what());
    }
    lastKeyFrameReq_ = now;
}
 
void
SIPCall::sendMuteState(bool state)
{
    std::string BODY = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
                       "<media_control><vc_primitive><to_encoder>"
                       "<mute_state="
                       + std::to_string(state)
                       + "/>"
                         "</to_encoder></vc_primitive></media_control>";
    // see https://tools.ietf.org/html/rfc5168 for XML Schema for Media Control details
 
    JAMI_DBG("Sending mute state via SIP INFO");
 
    try {
        sendSIPInfo(BODY, "media_control+xml");
    } catch (const std::exception& e) {
        JAMI_ERR("Error sending mute state: %s", e.what());
    }
}
 
void
SIPCall::sendVoiceActivity(std::string_view streamId, bool state)
{
    // dont send streamId if it's -1
    std::string streamIdPart = "";
    if (streamId != "-1" && !streamId.empty()) {
        streamIdPart = fmt::format("<stream_id>{}</stream_id>", streamId);
    }
 
    std::string BODY = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
                       "<media_control><vc_primitive>"
                       + streamIdPart
                       + "<to_encoder>"
                         "<voice_activity="
                       + std::to_string(state)
                       + "/>"
                         "</to_encoder></vc_primitive></media_control>";
 
    try {
        sendSIPInfo(BODY, "media_control+xml");
    } catch (const std::exception& e) {
        JAMI_ERR("Error sending voice activity state: %s", e.what());
    }
}
 
void
SIPCall::setInviteSession(pjsip_inv_session* inviteSession)
{
    std::lock_guard lk {callMutex_};
 
    if (inviteSession == nullptr and inviteSession_) {
        JAMI_DBG("[call:%s] Delete current invite session", getCallId().c_str());
    } else if (inviteSession != nullptr) {
        // NOTE: The first reference of the invite session is owned by pjsip. If
        // that counter goes down to zero the invite will be destroyed, and the
        // unique_ptr will point freed datas.  To avoid this, we increment the
        // ref counter and let our unique_ptr share the ownership of the session
        // with pjsip.
        if (PJ_SUCCESS != pjsip_inv_add_ref(inviteSession)) {
            JAMI_WARN("[call:%s] Attempting to set invalid invite session [%p]",
                      getCallId().c_str(),
                      inviteSession);
            inviteSession_.reset(nullptr);
            return;
        }
        JAMI_DBG("[call:%s] Set new invite session [%p]", getCallId().c_str(), inviteSession);
    } else {
        // Nothing to do.
        return;
    }
 
    inviteSession_.reset(inviteSession);
}
 
void
SIPCall::terminateSipSession(int status)
{
    JAMI_DBG("[call:%s] Terminate SIP session", getCallId().c_str());
    std::lock_guard lk {callMutex_};
    if (inviteSession_ and inviteSession_->state != PJSIP_INV_STATE_DISCONNECTED) {
        pjsip_tx_data* tdata = nullptr;
        auto ret = pjsip_inv_end_session(inviteSession_.get(), status, nullptr, &tdata);
        if (ret == PJ_SUCCESS) {
            if (tdata) {
                auto account = getSIPAccount();
                if (account) {
                    sip_utils::addContactHeader(contactHeader_, tdata);
                    // Add user-agent header
                    sip_utils::addUserAgentHeader(account->getUserAgentName(), tdata);
                } else {
                    JAMI_ERR("No account detected");
                    throw std::runtime_error(fmt::format("[call:{}] The account owning this call is invalid", getCallId()));
                }
 
                ret = pjsip_inv_send_msg(inviteSession_.get(), tdata);
                if (ret != PJ_SUCCESS)
                    JAMI_ERR("[call:%s] Failed to send terminate msg, SIP error (%s)",
                             getCallId().c_str(),
                             sip_utils::sip_strerror(ret).c_str());
            }
        } else
            JAMI_ERR("[call:%s] Failed to terminate INVITE@%p, SIP error (%s)",
                     getCallId().c_str(),
                     inviteSession_.get(),
                     sip_utils::sip_strerror(ret).c_str());
    }
    setInviteSession();
}
 
void
SIPCall::answer()
{
    std::lock_guard lk {callMutex_};
    auto account = getSIPAccount();
    if (!account) {
        JAMI_ERR("No account detected");
        return;
    }
 
    if (not inviteSession_)
        throw VoipLinkException("[call:" + getCallId()
                                + "] Answer: no invite session for this call");
 
    if (!inviteSession_->neg) {
        JAMI_WARN("[call:%s] Negotiator is NULL, INVITE received without an SDP",
                  getCallId().c_str());
 
        Manager::instance().sipVoIPLink().createSDPOffer(inviteSession_.get());
    }
 
    pjsip_tx_data* tdata;
    if (!inviteSession_->last_answer)
        throw std::runtime_error("Should only be called for initial answer");
 
    // answer with SDP if no SDP was given in initial invite (i.e. inv->neg is NULL)
    if (pjsip_inv_answer(inviteSession_.get(),
                         PJSIP_SC_OK,
                         NULL,
                         !inviteSession_->neg ? sdp_->getLocalSdpSession() : NULL,
                         &tdata)
        != PJ_SUCCESS)
        throw std::runtime_error("Unable to init invite request answer (200 OK)");
 
    if (contactHeader_.empty()) {
        throw std::runtime_error("Unable to answer with an invalid contact header");
    }
 
    JAMI_DBG("[call:%s] Answering with contact header: %s",
             getCallId().c_str(),
             contactHeader_.c_str());
 
    sip_utils::addContactHeader(contactHeader_, tdata);
 
    // Add user-agent header
    sip_utils::addUserAgentHeader(account->getUserAgentName(), tdata);
 
    if (pjsip_inv_send_msg(inviteSession_.get(), tdata) != PJ_SUCCESS) {
        setInviteSession();
        throw std::runtime_error("Unable to send invite request answer (200 OK)");
    }
 
    setState(CallState::ACTIVE, ConnectionState::CONNECTED);
}
 
void
SIPCall::answer(const std::vector<libjami::MediaMap>& mediaList)
{
    std::lock_guard lk {callMutex_};
    auto account = getSIPAccount();
    if (not account) {
        JAMI_ERR("No account detected");
        return;
    }
 
    if (not inviteSession_) {
        JAMI_ERR("[call:%s] No invite session for this call", getCallId().c_str());
        return;
    }
 
    if (not sdp_) {
        JAMI_ERR("[call:%s] No SDP session for this call", getCallId().c_str());
        return;
    }
 
    auto newMediaAttrList = MediaAttribute::buildMediaAttributesList(mediaList, isSrtpEnabled());
 
    if (newMediaAttrList.empty() and rtpStreams_.empty()) {
        JAMI_ERR("[call:%s] Media list must not be empty!", getCallId().c_str());
        return;
    }
 
    // If the media list is empty, use the current media (this could happen
    // with auto-answer for instance), otherwise update the current media.
    if (newMediaAttrList.empty()) {
        JAMI_DBG("[call:%s] Media list is empty, using current media", getCallId().c_str());
    } else if (newMediaAttrList.size() != rtpStreams_.size()) {
        // This should never happen, as we make sure that the sizes match earlier
        // in handleIncomingConversationCall.
        JAMI_ERROR("[call:{:s}] Media list size {:d} in answer does not match. Expected {:d}",
                   getCallId(),
                   newMediaAttrList.size(),
                   rtpStreams_.size());
        return;
    }
 
    auto const& mediaAttrList = newMediaAttrList.empty() ? getMediaAttributeList()
                                                         : newMediaAttrList;
 
    JAMI_DBG("[call:%s] Answering incoming call with following media:", getCallId().c_str());
    for (size_t idx = 0; idx < mediaAttrList.size(); idx++) {
        auto const& mediaAttr = mediaAttrList.at(idx);
        JAMI_DEBUG("[call:{:s}] Media @{:d} - {:s}", getCallId(), idx, mediaAttr.toString(true));
    }
 
    // Apply the media attributes.
    for (size_t idx = 0; idx < mediaAttrList.size(); idx++) {
        updateMediaStream(mediaAttrList[idx], idx);
    }
 
    // Create the SDP answer
    sdp_->processIncomingOffer(mediaAttrList);
 
    if (isIceEnabled() and remoteHasValidIceAttributes()) {
        setupIceResponse();
    }
 
    if (not inviteSession_->neg) {
        // We are answering to an INVITE that did not include a media offer (SDP).
        // The SIP specification (RFCs 3261/6337) requires that if a UA wants to
        // proceed with the call, it must provide a media offer (SDP) if the initial
        // INVITE did not offer one. In this case, the SDP offer will be included in
        // the SIP OK (200) answer. The peer UA will then include its SDP answer in
        // the SIP ACK message.
 
        // TODO. This code should be unified with the code used by accounts to create
        // SDP offers.
 
        JAMI_WARN("[call:%s] No negotiator session, peer sent an empty INVITE (without SDP)",
                  getCallId().c_str());
 
        Manager::instance().sipVoIPLink().createSDPOffer(inviteSession_.get());
 
        generateMediaPorts();
 
        // Setup and create ICE offer
        if (isIceEnabled()) {
            sdp_->clearIce();
            sdp_->setActiveRemoteSdpSession(nullptr);
            sdp_->setActiveLocalSdpSession(nullptr);
 
            auto opts = account->getIceOptions();
 
            auto publicAddr = account->getPublishedIpAddress();
 
            if (publicAddr) {
                opts.accountPublicAddr = publicAddr;
                if (auto interfaceAddr = dhtnet::ip_utils::getInterfaceAddr(account->getLocalInterface(),
                                                                    publicAddr.getFamily())) {
                    opts.accountLocalAddr = interfaceAddr;
                    if (createIceMediaTransport(false)
                        and initIceMediaTransport(true, std::move(opts))) {
                        addLocalIceAttributes();
                    }
                } else {
                    JAMI_WARN("[call:%s] Unable to init ICE transport, missing local address",
                              getCallId().c_str());
                }
            } else {
                JAMI_WARN("[call:%s] Unable to init ICE transport, missing public address",
                          getCallId().c_str());
            }
        }
    }
 
    if (!inviteSession_->last_answer)
        throw std::runtime_error("Should only be called for initial answer");
 
    // Set the SIP final answer (200 OK).
    pjsip_tx_data* tdata;
    if (pjsip_inv_answer(inviteSession_.get(), PJSIP_SC_OK, NULL, sdp_->getLocalSdpSession(), &tdata)
        != PJ_SUCCESS)
        throw std::runtime_error("Unable to init invite request answer (200 OK)");
 
    if (contactHeader_.empty()) {
        throw std::runtime_error("Unable to answer with an invalid contact header");
    }
 
    JAMI_DBG("[call:%s] Answering with contact header: %s",
             getCallId().c_str(),
             contactHeader_.c_str());
 
    sip_utils::addContactHeader(contactHeader_, tdata);
 
    // Add user-agent header
    sip_utils::addUserAgentHeader(account->getUserAgentName(), tdata);
 
    if (pjsip_inv_send_msg(inviteSession_.get(), tdata) != PJ_SUCCESS) {
        setInviteSession();
        throw std::runtime_error("Unable to send invite request answer (200 OK)");
    }
 
    setState(CallState::ACTIVE, ConnectionState::CONNECTED);
}
 
void
SIPCall::answerMediaChangeRequest(const std::vector<libjami::MediaMap>& mediaList, bool isRemote)
{
    std::lock_guard lk {callMutex_};
 
    auto account = getSIPAccount();
    if (not account) {
        JAMI_ERR("[call:%s] No account detected", getCallId().c_str());
        return;
    }
 
    auto mediaAttrList = MediaAttribute::buildMediaAttributesList(mediaList, isSrtpEnabled());
 
    // TODO. is the right place?
    // Disable video if disabled in the account.
    if (not account->isVideoEnabled()) {
        for (auto& mediaAttr : mediaAttrList) {
            if (mediaAttr.type_ == MediaType::MEDIA_VIDEO) {
                mediaAttr.enabled_ = false;
            }
        }
    }
 
    if (mediaAttrList.empty()) {
        JAMI_WARN("[call:%s] Media list is empty. Ignoring the media change request",
                  getCallId().c_str());
        return;
    }
 
    if (not sdp_) {
        JAMI_ERR("[call:%s] No valid SDP session", getCallId().c_str());
        return;
    }
 
    JAMI_DBG("[call:%s] Current media", getCallId().c_str());
    unsigned idx = 0;
    for (auto const& rtp : rtpStreams_) {
        JAMI_DBG("[call:%s] Media @%u: %s",
                 getCallId().c_str(),
                 idx++,
                 rtp.mediaAttribute_->toString(true).c_str());
    }
 
    JAMI_DBG("[call:%s] Answering to media change request with new media", getCallId().c_str());
    idx = 0;
    for (auto const& newMediaAttr : mediaAttrList) {
        JAMI_DBG("[call:%s] Media @%u: %s",
                 getCallId().c_str(),
                 idx++,
                 newMediaAttr.toString(true).c_str());
    }
 
    if (!updateAllMediaStreams(mediaAttrList, isRemote))
        return;
 
    if (not sdp_->processIncomingOffer(mediaAttrList)) {
        JAMI_WARN("[call:%s] Unable to process the new offer, ignoring", getCallId().c_str());
        return;
    }
 
    if (not sdp_->getRemoteSdpSession()) {
        JAMI_ERR("[call:%s] No valid remote SDP session", getCallId().c_str());
        return;
    }
 
    if (isIceEnabled() and remoteHasValidIceAttributes()) {
        JAMI_WARN("[call:%s] Requesting a new ICE media", getCallId().c_str());
        setupIceResponse(true);
    }
 
    if (not sdp_->startNegotiation()) {
        JAMI_ERR("[call:%s] Unable to start media negotiation for a re-invite request",
                 getCallId().c_str());
        return;
    }
 
    if (pjsip_inv_set_sdp_answer(inviteSession_.get(), sdp_->getLocalSdpSession()) != PJ_SUCCESS) {
        JAMI_ERR("[call:%s] Unable to start media negotiation for a re-invite request",
                 getCallId().c_str());
        return;
    }
 
    pjsip_tx_data* tdata;
    if (pjsip_inv_answer(inviteSession_.get(), PJSIP_SC_OK, NULL, NULL, &tdata) != PJ_SUCCESS) {
        JAMI_ERR("[call:%s] Unable to init answer to a re-invite request", getCallId().c_str());
        return;
    }
 
    if (not contactHeader_.empty()) {
        sip_utils::addContactHeader(contactHeader_, tdata);
    }
 
    // Add user-agent header
    sip_utils::addUserAgentHeader(account->getUserAgentName(), tdata);
 
    if (pjsip_inv_send_msg(inviteSession_.get(), tdata) != PJ_SUCCESS) {
        JAMI_ERR("[call:%s] Unable to send answer to a re-invite request", getCallId().c_str());
        setInviteSession();
        return;
    }
 
    JAMI_DBG("[call:%s] Successfully answered the media change request", getCallId().c_str());
}
 
void
SIPCall::hangup(int reason)
{
    std::lock_guard lk {callMutex_};
    pendingRecord_ = false;
    if (inviteSession_ and inviteSession_->dlg) {
        pjsip_route_hdr* route = inviteSession_->dlg->route_set.next;
        while (route and route != &inviteSession_->dlg->route_set) {
            char buf[1024];
            int printed = pjsip_hdr_print_on(route, buf, sizeof(buf));
            if (printed >= 0) {
                buf[printed] = '\0';
                JAMI_DBG("[call:%s] Route header %s", getCallId().c_str(), buf);
            }
            route = route->next;
        }
 
        int status = PJSIP_SC_OK;
        if (reason)
            status = reason;
        else if (inviteSession_->state <= PJSIP_INV_STATE_EARLY
                 and inviteSession_->role != PJSIP_ROLE_UAC)
            status = PJSIP_SC_CALL_TSX_DOES_NOT_EXIST;
        else if (inviteSession_->state >= PJSIP_INV_STATE_DISCONNECTED)
            status = PJSIP_SC_DECLINE;
 
        // Notify the peer
        terminateSipSession(status);
    }
 
    // Stop all RTP streams
    stopAllMedia();
    detachAudioFromConference();
    setState(Call::ConnectionState::DISCONNECTED, reason);
    dht::ThreadPool::io().run([w = weak()] {
        if (auto shared = w.lock())
            shared->removeCall();
    });
}
 
void
SIPCall::detachAudioFromConference()
{
#ifdef ENABLE_VIDEO
    if (auto conf = getConference()) {
        if (auto mixer = conf->getVideoMixer()) {
            for (auto& stream : getRtpSessionList(MediaType::MEDIA_AUDIO)) {
                mixer->removeAudioOnlySource(getCallId(), stream->streamId());
            }
        }
    }
#endif
}
 
void
SIPCall::refuse()
{
    if (!isIncoming() or getConnectionState() == ConnectionState::CONNECTED or !inviteSession_)
        return;
 
    stopAllMedia();
 
    // Notify the peer
    terminateSipSession(PJSIP_SC_DECLINE);
 
    setState(Call::ConnectionState::DISCONNECTED, ECONNABORTED);
    removeCall();
}
 
static void
transfer_client_cb(pjsip_evsub* sub, pjsip_event* event)
{
    auto mod_ua_id = Manager::instance().sipVoIPLink().getModId();
 
    switch (pjsip_evsub_get_state(sub)) {
    case PJSIP_EVSUB_STATE_ACCEPTED:
        if (!event)
            return;
 
        pj_assert(event->type == PJSIP_EVENT_TSX_STATE
                  && event->body.tsx_state.type == PJSIP_EVENT_RX_MSG);
        break;
 
    case PJSIP_EVSUB_STATE_TERMINATED:
        pjsip_evsub_set_mod_data(sub, mod_ua_id, NULL);
        break;
 
    case PJSIP_EVSUB_STATE_ACTIVE: {
        if (!event)
            return;
 
        pjsip_rx_data* r_data = event->body.rx_msg.rdata;
 
        if (!r_data)
            return;
 
        std::string request(pjsip_rx_data_get_info(r_data));
 
        pjsip_status_line status_line = {500, *pjsip_get_status_text(500)};
 
        if (!r_data->msg_info.msg)
            return;
 
        if (r_data->msg_info.msg->line.req.method.id == PJSIP_OTHER_METHOD
            and request.find("NOTIFY") != std::string::npos) {
            pjsip_msg_body* body = r_data->msg_info.msg->body;
 
            if (!body)
                return;
 
            if (pj_stricmp2(&body->content_type.type, "message")
                or pj_stricmp2(&body->content_type.subtype, "sipfrag"))
                return;
 
            if (pjsip_parse_status_line((char*) body->data, body->len, &status_line) != PJ_SUCCESS)
                return;
        }
 
        if (!r_data->msg_info.cid)
            return;
 
        auto call = static_cast<SIPCall*>(pjsip_evsub_get_mod_data(sub, mod_ua_id));
        if (!call)
            return;
 
        if (status_line.code / 100 == 2) {
            if (call->inviteSession_)
                call->terminateSipSession(PJSIP_SC_GONE);
            Manager::instance().hangupCall(call->getAccountId(), call->getCallId());
            pjsip_evsub_set_mod_data(sub, mod_ua_id, NULL);
        }
 
        break;
    }
 
    case PJSIP_EVSUB_STATE_NULL:
    case PJSIP_EVSUB_STATE_SENT:
    case PJSIP_EVSUB_STATE_PENDING:
    case PJSIP_EVSUB_STATE_UNKNOWN:
    default:
        break;
    }
}
 
bool
SIPCall::transferCommon(const pj_str_t* dst)
{
    if (not inviteSession_ or not inviteSession_->dlg)
        return false;
 
    pjsip_evsub_user xfer_cb;
    pj_bzero(&xfer_cb, sizeof(xfer_cb));
    xfer_cb.on_evsub_state = &transfer_client_cb;
 
    pjsip_evsub* sub;
 
    if (pjsip_xfer_create_uac(inviteSession_->dlg, &xfer_cb, &sub) != PJ_SUCCESS)
        return false;
 
    /* Associate this VoIPLink of call with the client subscription
     * We are unable to just associate call with the client subscription
     * because after this function, we are unable to find the corresponding
     * VoIPLink from the call any more. But the VoIPLink is useful!
     */
    pjsip_evsub_set_mod_data(sub, Manager::instance().sipVoIPLink().getModId(), this);
 
    /*
     * Create REFER request.
     */
    pjsip_tx_data* tdata;
 
    if (pjsip_xfer_initiate(sub, dst, &tdata) != PJ_SUCCESS)
        return false;
 
    /* Send. */
    if (pjsip_xfer_send_request(sub, tdata) != PJ_SUCCESS)
        return false;
 
    return true;
}
 
void
SIPCall::transfer(const std::string& to)
{
    auto account = getSIPAccount();
    if (!account) {
        JAMI_ERR("No account detected");
        return;
    }
 
    deinitRecorder();
    if (Call::isRecording())
        stopRecording();
 
    std::string toUri = account->getToUri(to);
    const pj_str_t dst(CONST_PJ_STR(toUri));
 
    JAMI_DBG("[call:%s] Transferring to %.*s", getCallId().c_str(), (int) dst.slen, dst.ptr);
 
    if (!transferCommon(&dst))
        throw VoipLinkException("Unable to transfer");
}
 
bool
SIPCall::attendedTransfer(const std::string& to)
{
    auto toCall = Manager::instance().callFactory.getCall<SIPCall>(to);
    if (!toCall)
        return false;
 
    if (not toCall->inviteSession_ or not toCall->inviteSession_->dlg)
        return false;
 
    pjsip_dialog* target_dlg = toCall->inviteSession_->dlg;
    pjsip_uri* uri = (pjsip_uri*) pjsip_uri_get_uri(target_dlg->remote.info->uri);
 
    char str_dest_buf[PJSIP_MAX_URL_SIZE * 2] = {'<'};
    pj_str_t dst = {str_dest_buf, 1};
 
    dst.slen += pjsip_uri_print(PJSIP_URI_IN_REQ_URI,
                                uri,
                                str_dest_buf + 1,
                                sizeof(str_dest_buf) - 1);
    dst.slen += pj_ansi_snprintf(str_dest_buf + dst.slen,
                                 sizeof(str_dest_buf) - dst.slen,
                                 "?"
                                 "Replaces=%.*s"
                                 "%%3Bto-tag%%3D%.*s"
                                 "%%3Bfrom-tag%%3D%.*s>",
                                 (int) target_dlg->call_id->id.slen,
                                 target_dlg->call_id->id.ptr,
                                 (int) target_dlg->remote.info->tag.slen,
                                 target_dlg->remote.info->tag.ptr,
                                 (int) target_dlg->local.info->tag.slen,
                                 target_dlg->local.info->tag.ptr);
 
    return transferCommon(&dst);
}
 
bool
SIPCall::onhold(OnReadyCb&& cb)
{
    // If ICE is currently negotiating, we must wait before hold the call
    if (isWaitingForIceAndMedia_) {
        holdCb_ = std::move(cb);
        remainingRequest_ = Request::HoldingOn;
        return false;
    }
 
    auto result = hold();
 
    if (cb)
        cb(result);
 
    return result;
}
 
bool
SIPCall::hold()
{
    if (getConnectionState() != ConnectionState::CONNECTED) {
        JAMI_WARN("[call:%s] Not connected, ignoring hold request", getCallId().c_str());
        return false;
    }
 
    if (not setState(CallState::HOLD)) {
        JAMI_WARN("[call:%s] Failed to set state to HOLD", getCallId().c_str());
        return false;
    }
 
    stopAllMedia();
 
    for (auto& stream : rtpStreams_) {
        stream.mediaAttribute_->onHold_ = true;
    }
 
    if (SIPSessionReinvite() != PJ_SUCCESS) {
        JAMI_WARN("[call:%s] Reinvite failed", getCallId().c_str());
        return false;
    }
 
    // TODO. Do we need to check for reinvIceMedia_ ?
    isWaitingForIceAndMedia_ = (reinvIceMedia_ != nullptr);
 
    JAMI_DBG("[call:%s] Set state to HOLD", getCallId().c_str());
    return true;
}
 
bool
SIPCall::offhold(OnReadyCb&& cb)
{
    // If ICE is currently negotiating, we must wait before unhold the call
    if (isWaitingForIceAndMedia_) {
        JAMI_DBG("[call:%s] ICE negotiation in progress. Resume request will be once ICE "
                 "negotiation completes",
                 getCallId().c_str());
        offHoldCb_ = std::move(cb);
        remainingRequest_ = Request::HoldingOff;
        return false;
    }
    JAMI_DBG("[call:%s] Resuming the call", getCallId().c_str());
    auto result = unhold();
 
    if (cb)
        cb(result);
 
    return result;
}
 
bool
SIPCall::unhold()
{
    auto account = getSIPAccount();
    if (!account) {
        JAMI_ERR("No account detected");
        return false;
    }
 
    bool success = false;
    try {
        success = internalOffHold([] {});
    } catch (const SdpException& e) {
        JAMI_ERR("[call:%s] %s", getCallId().c_str(), e.what());
        throw VoipLinkException("SDP issue in offhold");
    }
 
    // Only wait for ICE if we have an ICE re-invite in progress
    isWaitingForIceAndMedia_ = success and (reinvIceMedia_ != nullptr);
 
    return success;
}
 
bool
SIPCall::internalOffHold(const std::function<void()>& sdp_cb)
{
    if (getConnectionState() != ConnectionState::CONNECTED) {
        JAMI_WARN("[call:%s] Not connected, ignoring resume request", getCallId().c_str());
    }
 
    if (not setState(CallState::ACTIVE))
        return false;
 
    sdp_cb();
 
    {
        for (auto& stream : rtpStreams_) {
            stream.mediaAttribute_->onHold_ = false;
        }
        // For now, call resume will always require new ICE negotiation.
        if (SIPSessionReinvite(getMediaAttributeList(), true) != PJ_SUCCESS) {
            JAMI_WARN("[call:%s] Resuming hold", getCallId().c_str());
            if (isWaitingForIceAndMedia_) {
                remainingRequest_ = Request::HoldingOn;
            } else {
                hold();
            }
            return false;
        }
    }
 
    return true;
}
 
void
SIPCall::switchInput(const std::string& source)
{
    JAMI_DBG("[call:%s] Set selected source to %s", getCallId().c_str(), source.c_str());
 
    for (auto const& stream : rtpStreams_) {
        auto mediaAttr = stream.mediaAttribute_;
        mediaAttr->sourceUri_ = source;
    }
 
    // Check if the call is being recorded in order to continue
    // … the recording after the switch
    bool isRec = Call::isRecording();
 
    if (isWaitingForIceAndMedia_) {
        remainingRequest_ = Request::SwitchInput;
    } else {
        // For now, switchInput will always trigger a re-invite
        // with new ICE session.
        if (SIPSessionReinvite(getMediaAttributeList(), true) == PJ_SUCCESS and reinvIceMedia_) {
            isWaitingForIceAndMedia_ = true;
        }
    }
    if (isRec) {
        readyToRecord_ = false;
        pendingRecord_ = true;
    }
}
 
void
SIPCall::peerHungup()
{
    pendingRecord_ = false;
    // Stop all RTP streams
    stopAllMedia();
 
    if (inviteSession_)
        terminateSipSession(PJSIP_SC_NOT_FOUND);
    detachAudioFromConference();
    Call::peerHungup();
}
 
void
SIPCall::carryingDTMFdigits(char code)
{
    int duration = Manager::instance().voipPreferences.getPulseLength();
    char dtmf_body[1000];
    int ret;
 
    // handle flash code
    if (code == '!') {
        ret = snprintf(dtmf_body, sizeof dtmf_body - 1, "Signal=16\r\nDuration=%d\r\n", duration);
    } else {
        ret = snprintf(dtmf_body,
                       sizeof dtmf_body - 1,
                       "Signal=%c\r\nDuration=%d\r\n",
                       code,
                       duration);
    }
 
    try {
        sendSIPInfo({dtmf_body, (size_t) ret}, "dtmf-relay");
    } catch (const std::exception& e) {
        JAMI_ERR("Error sending DTMF: %s", e.what());
    }
}
 
void
SIPCall::setVideoOrientation(int streamIdx, int rotation)
{
    std::string streamIdPart;
    if (streamIdx != -1)
        streamIdPart = fmt::format("<stream_id>{}</stream_id>", streamIdx);
    std::string sip_body = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
                           "<media_control><vc_primitive><to_encoder>"
                           "<device_orientation="
                           + std::to_string(-rotation) + "/>" + "</to_encoder>" + streamIdPart
                           + "</vc_primitive></media_control>";
 
    JAMI_DBG("Sending device orientation via SIP INFO %d for stream %u", rotation, streamIdx);
 
    sendSIPInfo(sip_body, "media_control+xml");
}
 
void
SIPCall::sendTextMessage(const std::map<std::string, std::string>& messages, const std::string& from)
{
    // TODO: for now we ignore the "from" (the previous implementation for sending this info was
    //      buggy and verbose), another way to send the original message sender will be implemented
    //      in the future
    if (not subcalls_.empty()) {
        pendingOutMessages_.emplace_back(messages, from);
        for (auto& c : subcalls_)
            c->sendTextMessage(messages, from);
    } else {
        if (inviteSession_) {
            try {
                // Ignore if the peer does not allow "MESSAGE" SIP method
                // NOTE:
                // The SIP "Allow" header is not mandatory as per RFC-3261. If it's
                // not present and since "MESSAGE" method is an extention method,
                // we choose to assume that the peer does not support the "MESSAGE"
                // method to prevent unexpected behavior when interoperating with
                // some SIP implementations.
                if (not isSipMethodAllowedByPeer(sip_utils::SIP_METHODS::MESSAGE)) {
                    JAMI_WARN() << fmt::format("[call:{}] Peer does not allow \"{}\" method",
                                               getCallId(),
                                               sip_utils::SIP_METHODS::MESSAGE);
 
                    // Print peer's allowed methods
                    JAMI_INFO() << fmt::format("[call:{}] Peer's allowed methods: {}",
                                               getCallId(),
                                               peerAllowedMethods_);
                    return;
                }
 
                im::sendSipMessage(inviteSession_.get(), messages);
 
            } catch (...) {
                JAMI_ERR("[call:%s] Failed to send SIP text message", getCallId().c_str());
            }
        } else {
            pendingOutMessages_.emplace_back(messages, from);
            JAMI_ERR("[call:%s] sendTextMessage: no invite session for this call",
                     getCallId().c_str());
        }
    }
}
 
void
SIPCall::removeCall()
{
#ifdef ENABLE_PLUGIN
    jami::Manager::instance().getJamiPluginManager().getCallServicesManager().clearCallHandlerMaps(
        getCallId());
#endif
    std::lock_guard lk {callMutex_};
    JAMI_DBG("[call:%s] removeCall()", getCallId().c_str());
    if (sdp_) {
        sdp_->setActiveLocalSdpSession(nullptr);
        sdp_->setActiveRemoteSdpSession(nullptr);
    }
    Call::removeCall();
 
    {
        std::lock_guard lk(transportMtx_);
        resetTransport(std::move(iceMedia_));
        resetTransport(std::move(reinvIceMedia_));
    }
 
    setInviteSession();
    setSipTransport({});
}
 
void
SIPCall::onFailure(signed cause)
{
    if (setState(CallState::MERROR, ConnectionState::DISCONNECTED, cause)) {
        runOnMainThread([w = weak()] {
            if (auto shared = w.lock()) {
                auto& call = *shared;
                Manager::instance().callFailure(call);
                call.removeCall();
            }
        });
    }
}
 
void
SIPCall::onBusyHere()
{
    if (getCallType() == CallType::OUTGOING)
        setState(CallState::PEER_BUSY, ConnectionState::DISCONNECTED);
    else
        setState(CallState::BUSY, ConnectionState::DISCONNECTED);
 
    runOnMainThread([w = weak()] {
        if (auto shared = w.lock()) {
            auto& call = *shared;
            Manager::instance().callBusy(call);
            call.removeCall();
        }
    });
}
 
void
SIPCall::onClosed()
{
    runOnMainThread([w = weak()] {
        if (auto shared = w.lock()) {
            auto& call = *shared;
            Manager::instance().peerHungupCall(call);
            call.removeCall();
        }
    });
}
 
void
SIPCall::onAnswered()
{
    JAMI_WARN("[call:%s] onAnswered()", getCallId().c_str());
    runOnMainThread([w = weak()] {
        if (auto shared = w.lock()) {
            if (shared->getConnectionState() != ConnectionState::CONNECTED) {
                shared->setState(CallState::ACTIVE, ConnectionState::CONNECTED);
                if (not shared->isSubcall()) {
                    Manager::instance().peerAnsweredCall(*shared);
                }
            }
        }
    });
}
 
void
SIPCall::sendKeyframe(int streamIdx)
{
#ifdef ENABLE_VIDEO
    dht::ThreadPool::computation().run([w = weak(), streamIdx] {
        if (auto sthis = w.lock()) {
            JAMI_DBG("Handling picture fast update request");
            if (streamIdx == -1) {
                for (const auto& videoRtp : sthis->getRtpSessionList(MediaType::MEDIA_VIDEO))
                    std::static_pointer_cast<video::VideoRtpSession>(videoRtp)->forceKeyFrame();
            } else if (streamIdx > -1 && streamIdx < static_cast<int>(sthis->rtpStreams_.size())) {
                // Apply request for requested stream
                auto& stream = sthis->rtpStreams_[streamIdx];
                if (stream.rtpSession_
                    && stream.rtpSession_->getMediaType() == MediaType::MEDIA_VIDEO)
                    std::static_pointer_cast<video::VideoRtpSession>(stream.rtpSession_)
                        ->forceKeyFrame();
            }
        }
    });
#endif
}
 
bool
SIPCall::isIceEnabled() const
{
    return enableIce_;
}
 
void
SIPCall::setPeerUaVersion(std::string_view ua)
{
    if (peerUserAgent_ == ua or ua.empty()) {
        // Silently ignore if it did not change or empty.
        return;
    }
 
    if (peerUserAgent_.empty()) {
        JAMI_DEBUG("[call:{}] Set peer's User-Agent to [{}]",
                   getCallId(),
                   ua);
    } else if (not peerUserAgent_.empty()) {
        // Unlikely, but should be handled since we don't have control over the peer.
        // Even if it's unexpected, we still attempt to parse the UA version.
        JAMI_WARNING("[call:{}] Peer's User-Agent unexpectedly changed from [{}] to [{}]",
                     getCallId(),
                     peerUserAgent_,
                     ua);
    }
 
    peerUserAgent_ = ua;
 
    // User-agent parsing
    constexpr std::string_view PACK_NAME(PACKAGE_NAME " ");
    auto pos = ua.find(PACK_NAME);
    if (pos == std::string_view::npos) {
        // Must have the expected package name.
        JAMI_WARN("Unable to find the expected package name in peer's User-Agent");
        return;
    }
 
    ua = ua.substr(pos + PACK_NAME.length());
 
    std::string_view version;
    // Unstable (un-released) versions has a hyphen + commit ID after
    // the version number. Find the commit ID if any, and ignore it.
    pos = ua.find('-');
    if (pos != std::string_view::npos) {
        // Get the version and ignore the commit ID.
        version = ua.substr(0, pos);
    } else {
        // Extract the version number.
        pos = ua.find(' ');
        if (pos != std::string_view::npos) {
            version = ua.substr(0, pos);
        }
    }
 
    if (version.empty()) {
        JAMI_DEBUG("[call:{}] Unable to parse peer's version", getCallId());
        return;
    }
 
    auto peerVersion = split_string_to_unsigned(version, '.');
    if (peerVersion.size() > 4u) {
        JAMI_WARNING("[call:{}] Unable to parse peer's version", getCallId());
        return;
    }
 
    // Check if peer's version is at least 10.0.2 to enable multi-stream.
    peerSupportMultiStream_ = Account::meetMinimumRequiredVersion(peerVersion,
                                                                  MULTISTREAM_REQUIRED_VERSION);
    if (not peerSupportMultiStream_) {
        JAMI_DEBUG("Peer's version [{}] does not support multi-stream. "
                   "Min required version: [{}]",
                   version,
                   MULTISTREAM_REQUIRED_VERSION_STR);
    }
 
    // Check if peer's version is at least 13.11.0 to enable multi-audio-stream.
    peerSupportMultiAudioStream_ = Account::meetMinimumRequiredVersion(peerVersion,
                                                                       MULTIAUDIO_REQUIRED_VERSION);
    if (not peerSupportMultiAudioStream_) {
        JAMI_DEBUG("Peer's version [{}] does not support multi-audio-stream. "
                   "Min required version: [{}]",
                   version,
                   MULTIAUDIO_REQUIRED_VERSION_STR);
    }
 
    // Check if peer's version is at least 13.3.0 to enable multi-ICE.
    peerSupportMultiIce_ = Account::meetMinimumRequiredVersion(peerVersion,
                                                               MULTIICE_REQUIRED_VERSION);
    if (not peerSupportMultiIce_) {
        JAMI_DEBUG("Peer's version [{}] does not support more than 2 ICE media streams. "
                   "Min required version: [{}]",
                   version,
                   MULTIICE_REQUIRED_VERSION_STR);
    }
 
    // Check if peer's version supports re-invite without ICE renegotiation.
    peerSupportReuseIceInReinv_
        = Account::meetMinimumRequiredVersion(peerVersion, REUSE_ICE_IN_REINVITE_REQUIRED_VERSION);
    if (not peerSupportReuseIceInReinv_) {
        JAMI_LOG("Peer's version [{:s}] does not support re-invite without ICE renegotiation. "
                 "Min required version: [{:s}]",
                 version,
                 REUSE_ICE_IN_REINVITE_REQUIRED_VERSION_STR);
    }
}
 
void
SIPCall::setPeerAllowMethods(std::vector<std::string> methods)
{
    std::lock_guard lock {callMutex_};
    peerAllowedMethods_ = std::move(methods);
}
 
bool
SIPCall::isSipMethodAllowedByPeer(const std::string_view method) const
{
    std::lock_guard lock {callMutex_};
 
    return std::find(peerAllowedMethods_.begin(), peerAllowedMethods_.end(), method)
           != peerAllowedMethods_.end();
}
 
void
SIPCall::onPeerRinging()
{
    JAMI_DBG("[call:%s] Peer ringing", getCallId().c_str());
    setState(ConnectionState::RINGING);
}
 
void
SIPCall::addLocalIceAttributes()
{
    if (not isIceEnabled())
        return;
 
    auto iceMedia = getIceMedia();
 
    if (not iceMedia) {
        JAMI_ERR("[call:%s] Invalid ICE instance", getCallId().c_str());
        return;
    }
 
    auto start = std::chrono::steady_clock::now();
 
    if (not iceMedia->isInitialized()) {
        JAMI_DBG("[call:%s] Waiting for ICE initialization", getCallId().c_str());
        // we need an initialized ICE to progress further
        if (iceMedia->waitForInitialization(DEFAULT_ICE_INIT_TIMEOUT) <= 0) {
            JAMI_ERR("[call:%s] ICE initialization timed out", getCallId().c_str());
            return;
        }
        // ICE initialization may take longer than usual in some cases,
        // for instance when TURN servers do not respond in time (DNS
        // resolution or other issues).
        auto duration = std::chrono::steady_clock::now() - start;
        if (duration > EXPECTED_ICE_INIT_MAX_TIME) {
            JAMI_WARNING("[call:{:s}] ICE initialization time was unexpectedly high ({})",
                         getCallId(),
                         std::chrono::duration_cast<std::chrono::milliseconds>(duration));
        }
    }
 
    // Check the state of ICE instance, the initialization may have failed.
    if (not iceMedia->isInitialized()) {
        JAMI_ERR("[call:%s] ICE session is uninitialized", getCallId().c_str());
        return;
    }
 
    // Check the state, the call might have been canceled while waiting.
    // for initialization.
    if (getState() == Call::CallState::OVER) {
        JAMI_WARN("[call:%s] The call was terminated while waiting for ICE initialization",
                  getCallId().c_str());
        return;
    }
 
    auto account = getSIPAccount();
    if (not account) {
        JAMI_ERR("No account detected");
        return;
    }
    if (not sdp_) {
        JAMI_ERR("No sdp detected");
        return;
    }
 
    JAMI_DBG("[call:%s] Add local attributes for ICE instance [%p]",
             getCallId().c_str(),
             iceMedia.get());
 
    sdp_->addIceAttributes(iceMedia->getLocalAttributes());
 
    if (account->isIceCompIdRfc5245Compliant()) {
        unsigned streamIdx = 0;
        for (auto const& stream : rtpStreams_) {
            if (not stream.mediaAttribute_->enabled_) {
                // Dont add ICE candidates if the media is disabled
                JAMI_DBG("[call:%s] Media [%s] @ %u is disabled, don't add local candidates",
                         getCallId().c_str(),
                         stream.mediaAttribute_->toString().c_str(),
                         streamIdx);
                continue;
            }
            JAMI_DBG("[call:%s] Add ICE local candidates for media [%s] @ %u",
                     getCallId().c_str(),
                     stream.mediaAttribute_->toString().c_str(),
                     streamIdx);
            // RTP
            sdp_->addIceCandidates(streamIdx,
                                   iceMedia->getLocalCandidates(streamIdx, ICE_COMP_ID_RTP));
            // RTCP if it has its own port
            if (not rtcpMuxEnabled_) {
                sdp_->addIceCandidates(streamIdx,
                                       iceMedia->getLocalCandidates(streamIdx, ICE_COMP_ID_RTP + 1));
            }
 
            streamIdx++;
        }
    } else {
        unsigned idx = 0;
        unsigned compId = 1;
        for (auto const& stream : rtpStreams_) {
            if (not stream.mediaAttribute_->enabled_) {
                // Skipping local ICE candidates if the media is disabled
                continue;
            }
            JAMI_DBG("[call:%s] Add ICE local candidates for media [%s] @ %u",
                     getCallId().c_str(),
                     stream.mediaAttribute_->toString().c_str(),
                     idx);
            // RTP
            sdp_->addIceCandidates(idx, iceMedia->getLocalCandidates(compId));
            compId++;
 
            // RTCP if it has its own port
            if (not rtcpMuxEnabled_) {
                sdp_->addIceCandidates(idx, iceMedia->getLocalCandidates(compId));
                compId++;
            }
 
            idx++;
        }
    }
}
 
std::vector<IceCandidate>
SIPCall::getAllRemoteCandidates(dhtnet::IceTransport& transport) const
{
    std::vector<IceCandidate> rem_candidates;
    for (unsigned mediaIdx = 0; mediaIdx < static_cast<unsigned>(rtpStreams_.size()); mediaIdx++) {
        IceCandidate cand;
        for (auto& line : sdp_->getIceCandidates(mediaIdx)) {
            if (transport.parseIceAttributeLine(mediaIdx, line, cand)) {
                JAMI_DBG("[call:%s] Add remote ICE candidate: %s",
                         getCallId().c_str(),
                         line.c_str());
                rem_candidates.emplace_back(std::move(cand));
            }
        }
    }
    return rem_candidates;
}
 
std::shared_ptr<SystemCodecInfo>
SIPCall::getVideoCodec() const
{
#ifdef ENABLE_VIDEO
    // Return first video codec as we negotiate only one codec for the call
    // Note: with multistream we can negotiate codecs/stream, but it's not the case
    // in practice (same for audio), so just return the first video codec.
    for (const auto& videoRtp : getRtpSessionList(MediaType::MEDIA_VIDEO))
        return videoRtp->getCodec();
#endif
    return {};
}
 
std::shared_ptr<SystemCodecInfo>
SIPCall::getAudioCodec() const
{
    // Return first video codec as we negotiate only one codec for the call
    for (const auto& audioRtp : getRtpSessionList(MediaType::MEDIA_AUDIO))
        return audioRtp->getCodec();
    return {};
}
 
void
SIPCall::addMediaStream(const MediaAttribute& mediaAttr)
{
    // Create and add the media stream with the provided attribute.
    // Do not create the RTP sessions yet.
    RtpStream stream;
    stream.mediaAttribute_ = std::make_shared<MediaAttribute>(mediaAttr);
 
    // Set default media source if empty. Kept for backward compatibility.
#ifdef ENABLE_VIDEO
    if (stream.mediaAttribute_->sourceUri_.empty()) {
        if (auto videoManager = Manager::instance().getVideoManager()) {
            stream.mediaAttribute_->sourceUri_
                = videoManager->videoDeviceMonitor.getMRLForDefaultDevice();
        }
    }
#endif
 
    rtpStreams_.emplace_back(std::move(stream));
}
 
size_t
SIPCall::initMediaStreams(const std::vector<MediaAttribute>& mediaAttrList)
{
    for (size_t idx = 0; idx < mediaAttrList.size(); idx++) {
        auto const& mediaAttr = mediaAttrList.at(idx);
        if (mediaAttr.type_ != MEDIA_AUDIO && mediaAttr.type_ != MEDIA_VIDEO) {
            JAMI_ERR("[call:%s] Unexpected media type %u", getCallId().c_str(), mediaAttr.type_);
            assert(false);
        }
 
        addMediaStream(mediaAttr);
        auto& stream = rtpStreams_.back();
        createRtpSession(stream);
 
        JAMI_DEBUG("[call:{:s}] Added media @{:d}: {:s}",
                   getCallId(),
                   idx,
                   stream.mediaAttribute_->toString(true));
    }
 
    JAMI_DEBUG("[call:{:s}] Created {:d} media stream(s)", getCallId(), rtpStreams_.size());
 
    return rtpStreams_.size();
}
 
bool
SIPCall::hasVideo() const
{
#ifdef ENABLE_VIDEO
    std::function<bool(const RtpStream& stream)> videoCheck = [](auto const& stream) {
        bool validVideo = stream.mediaAttribute_
                          && stream.mediaAttribute_->hasValidVideo();
        bool validRemoteVideo = stream.remoteMediaAttribute_
                                && stream.remoteMediaAttribute_->hasValidVideo();
        return validVideo || validRemoteVideo;
    };
 
    const auto iter = std::find_if(rtpStreams_.begin(), rtpStreams_.end(), videoCheck);
 
    return iter != rtpStreams_.end();
#else
    return false;
#endif
}
 
bool
SIPCall::isCaptureDeviceMuted(const MediaType& mediaType) const
{
    // Return true only if all media of type 'mediaType' that use capture devices
    // source, are muted.
    std::function<bool(const RtpStream& stream)> mutedCheck = [&mediaType](auto const& stream) {
        return (stream.mediaAttribute_->type_ == mediaType and not stream.mediaAttribute_->muted_);
    };
    const auto iter = std::find_if(rtpStreams_.begin(), rtpStreams_.end(), mutedCheck);
    return iter == rtpStreams_.end();
}
 
void
SIPCall::setupNegotiatedMedia()
{
    JAMI_DBG("[call:%s] Updating negotiated media", getCallId().c_str());
 
    if (not sipTransport_ or not sdp_) {
        JAMI_ERR("[call:%s] Call is in an invalid state", getCallId().c_str());
        return;
    }
 
    auto slots = sdp_->getMediaSlots();
    bool peer_holding {true};
    int streamIdx = -1;
 
    for (const auto& slot : slots) {
        streamIdx++;
        const auto& local = slot.first;
        const auto& remote = slot.second;
 
        // Skip disabled media
        if (not local.enabled) {
            JAMI_DBG("[call:%s] [SDP:slot#%u] The media is disabled, skipping",
                     getCallId().c_str(),
                     streamIdx);
            continue;
        }
 
        if (static_cast<size_t>(streamIdx) >= rtpStreams_.size()) {
            throw std::runtime_error("Stream index is out-of-range");
        }
 
        auto const& rtpStream = rtpStreams_[streamIdx];
 
        if (not rtpStream.mediaAttribute_) {
            throw std::runtime_error("Missing media attribute");
        }
 
        // To enable a media, it must be enabled on both sides.
        rtpStream.mediaAttribute_->enabled_ = local.enabled and remote.enabled;
 
        if (not rtpStream.rtpSession_)
            throw std::runtime_error("Must have a valid RTP session");
 
        if (local.type != MEDIA_AUDIO && local.type != MEDIA_VIDEO) {
            JAMI_ERR("[call:%s] Unexpected media type %u", getCallId().c_str(), local.type);
            throw std::runtime_error("Invalid media attribute");
        }
 
        if (local.type != remote.type) {
            JAMI_ERR("[call:%s] [SDP:slot#%u] Inconsistent media type between local and remote",
                     getCallId().c_str(),
                     streamIdx);
            continue;
        }
 
        if (local.enabled and not local.codec) {
            JAMI_WARN("[call:%s] [SDP:slot#%u] Missing local codec", getCallId().c_str(), streamIdx);
            continue;
        }
 
        if (remote.enabled and not remote.codec) {
            JAMI_WARN("[call:%s] [SDP:slot#%u] Missing remote codec",
                      getCallId().c_str(),
                      streamIdx);
            continue;
        }
 
        if (isSrtpEnabled() and local.enabled and not local.crypto) {
            JAMI_WARN("[call:%s] [SDP:slot#%u] Secure mode but no local crypto attributes. "
                      "Ignoring the media",
                      getCallId().c_str(),
                      streamIdx);
            continue;
        }
 
        if (isSrtpEnabled() and remote.enabled and not remote.crypto) {
            JAMI_WARN("[call:%s] [SDP:slot#%u] Secure mode but no crypto remote attributes. "
                      "Ignoring the media",
                      getCallId().c_str(),
                      streamIdx);
            continue;
        }
 
        // Aggregate holding info over all remote streams
        peer_holding &= remote.onHold;
 
        configureRtpSession(rtpStream.rtpSession_, rtpStream.mediaAttribute_, local, remote);
    }
 
    // TODO. Do we really use this?
    if (not isSubcall() and peerHolding_ != peer_holding) {
        peerHolding_ = peer_holding;
        emitSignal<libjami::CallSignal::PeerHold>(getCallId(), peerHolding_);
    }
}
 
void
SIPCall::startAllMedia()
{
    JAMI_DBG("[call:%s] Starting all media", getCallId().c_str());
 
    if (not sipTransport_ or not sdp_) {
        JAMI_ERR("[call:%s] The call is in invalid state", getCallId().c_str());
        return;
    }
 
    if (isSrtpEnabled() && not sipTransport_->isSecure()) {
        JAMI_WARN("[call:%s] Crypto (SRTP) is negotiated over an insecure signaling transport",
                  getCallId().c_str());
    }
 
    // reset
    readyToRecord_ = false;
 
    // Not restarting media loop on hold as it's a huge waste of CPU resources
    if (getState() != CallState::HOLD) {
        bool iceRunning = isIceRunning();
        auto remoteMediaList = Sdp::getMediaAttributeListFromSdp(sdp_->getActiveRemoteSdpSession());
        size_t idx = 0;
        for (auto& rtpStream : rtpStreams_) {
            if (not rtpStream.mediaAttribute_) {
                throw std::runtime_error("Missing media attribute");
            }
            rtpStream.remoteMediaAttribute_ = std::make_shared<MediaAttribute>(remoteMediaList[idx]);
            if (rtpStream.remoteMediaAttribute_->type_ == MediaType::MEDIA_VIDEO) {
                rtpStream.rtpSession_->setMuted(rtpStream.remoteMediaAttribute_->muted_, RtpSession::Direction::RECV);
            }
            dht::ThreadPool::io().run([
                w = weak(),
                idx,
                isVideo = rtpStream.remoteMediaAttribute_->type_ == MediaType::MEDIA_VIDEO,
                iceRunning,
                rtpSession = rtpStream.rtpSession_,
                rtpSocketPair = std::make_shared<std::pair<std::unique_ptr<dhtnet::IceSocket>, std::unique_ptr<dhtnet::IceSocket>>>(std::move(rtpStream.rtpSocket_), std::move(rtpStream.rtcpSocket_))
            ]() mutable {
                try {
                    if (iceRunning) {
                        rtpSession->start(std::move(rtpSocketPair->first), std::move(rtpSocketPair->second));
                    } else {
                        rtpSession->start(nullptr, nullptr);
                    }
                    if (isVideo) {
                        if (auto call = w.lock())
                            call->requestKeyframe(idx);
                    }
                } catch (const std::exception& e) {
                    JAMI_ERR("[call:%s] Failed to start RTP session %zu: %s",
                            w.lock() ? w.lock()->getCallId().c_str() : "unknown", idx, e.what());
                }
            });
            idx++;
        }
    }
 
    // Media is restarted, we can process the last holding request.
    isWaitingForIceAndMedia_ = false;
    if (remainingRequest_ != Request::NoRequest) {
        bool result = true;
        switch (remainingRequest_) {
        case Request::HoldingOn:
            result = hold();
            if (holdCb_) {
                holdCb_(result);
                holdCb_ = nullptr;
            }
            break;
        case Request::HoldingOff:
            result = unhold();
            if (offHoldCb_) {
                offHoldCb_(result);
                offHoldCb_ = nullptr;
            }
            break;
        case Request::SwitchInput:
            SIPSessionReinvite();
            break;
        default:
            break;
        }
        remainingRequest_ = Request::NoRequest;
    }
 
    mediaRestartRequired_ = false;
 
#ifdef ENABLE_PLUGIN
    // Create AVStreams associated with the call
    createCallAVStreams();
#endif
}
 
void
SIPCall::restartMediaSender()
{
    JAMI_DBG("[call:%s] Restarting TX media streams", getCallId().c_str());
    for (const auto& rtpSession : getRtpSessionList())
        rtpSession->restartSender();
}
 
void
SIPCall::stopAllMedia()
{
    JAMI_DBG("[call:%s] Stopping all media", getCallId().c_str());
 
#ifdef ENABLE_VIDEO
    {
        std::lock_guard lk(sinksMtx_);
        for (auto it = callSinksMap_.begin(); it != callSinksMap_.end();) {
            for (const auto& videoRtp : getRtpSessionList(MediaType::MEDIA_VIDEO)) {
                auto& videoReceive = std::static_pointer_cast<video::VideoRtpSession>(videoRtp)
                                         ->getVideoReceive();
                if (videoReceive) {
                    auto& sink = videoReceive->getSink();
                    sink->detach(it->second.get());
                }
            }
            it->second->stop();
            it = callSinksMap_.erase(it);
        }
    }
#endif
    // Stop all RTP sessions in parallel
    std::mutex mtx;
    std::condition_variable cv;
    unsigned int stoppedCount = 0;
    unsigned int totalStreams = rtpStreams_.size();
 
    for (const auto& rtpSession : getRtpSessionList()) {
        dht::ThreadPool::io().run([&, rtpSession]() {
            try {
                rtpSession->stop();
            } catch (const std::exception& e) {
                JAMI_ERR("Failed to stop RTP session: %s", e.what());
            }
 
            std::lock_guard lk(mtx);
            stoppedCount++;
            cv.notify_one();
        });
    }
 
    // Wait for all streams to be stopped
    std::unique_lock lk(mtx);
    cv.wait(lk, [&] {
        return stoppedCount == totalStreams;
    });
 
#ifdef ENABLE_PLUGIN
    {
        clearCallAVStreams();
        std::lock_guard lk(avStreamsMtx_);
        Manager::instance().getJamiPluginManager().getCallServicesManager().clearAVSubject(
            getCallId());
    }
#endif
}
 
void
SIPCall::muteMedia(const std::string& mediaType, bool mute)
{
    auto type = MediaAttribute::stringToMediaType(mediaType);
 
    if (type == MediaType::MEDIA_AUDIO) {
        JAMI_WARN("[call:%s] %s all audio media",
                  getCallId().c_str(),
                  mute ? "muting " : "unmuting ");
 
    } else if (type == MediaType::MEDIA_VIDEO) {
        JAMI_WARN("[call:%s] %s all video media",
                  getCallId().c_str(),
                  mute ? "muting" : "unmuting");
    } else {
        JAMI_ERR("[call:%s] Invalid media type %s", getCallId().c_str(), mediaType.c_str());
        assert(false);
    }
 
    // Get the current media attributes.
    auto mediaList = getMediaAttributeList();
 
    // Mute/Unmute all medias with matching type.
    for (auto& mediaAttr : mediaList) {
        if (mediaAttr.type_ == type) {
            mediaAttr.muted_ = mute;
        }
    }
 
    // Apply
    requestMediaChange(MediaAttribute::mediaAttributesToMediaMaps(mediaList));
}
 
void
SIPCall::updateMediaStream(const MediaAttribute& newMediaAttr, size_t streamIdx)
{
    assert(streamIdx < rtpStreams_.size());
 
    auto const& rtpStream = rtpStreams_[streamIdx];
    assert(rtpStream.rtpSession_);
 
    auto const& mediaAttr = rtpStream.mediaAttribute_;
    assert(mediaAttr);
 
    bool notifyMute = false;
 
    if (newMediaAttr.muted_ == mediaAttr->muted_) {
        // Nothing to do. Already in the desired state.
        JAMI_DEBUG("[call:{}] [{}] already {}",
                 getCallId(),
                 mediaAttr->label_,
                 mediaAttr->muted_ ? "muted " : "unmuted ");
 
    } else {
        // Update
        mediaAttr->muted_ = newMediaAttr.muted_;
        notifyMute = true;
        JAMI_DEBUG("[call:{}] {} [{}]",
                 getCallId(),
                 mediaAttr->muted_ ? "muting" : "unmuting",
                 mediaAttr->label_);
    }
 
    // Only update source and type if actually set.
    if (not newMediaAttr.sourceUri_.empty())
        mediaAttr->sourceUri_ = newMediaAttr.sourceUri_;
 
    if (notifyMute and mediaAttr->type_ == MediaType::MEDIA_AUDIO) {
        rtpStream.rtpSession_->setMediaSource(mediaAttr->sourceUri_);
        rtpStream.rtpSession_->setMuted(mediaAttr->muted_);
        sendMuteState(mediaAttr->muted_);
        if (not isSubcall())
            emitSignal<libjami::CallSignal::AudioMuted>(getCallId(), mediaAttr->muted_);
        return;
    }
 
#ifdef ENABLE_VIDEO
    if (notifyMute and mediaAttr->type_ == MediaType::MEDIA_VIDEO) {
        rtpStream.rtpSession_->setMediaSource(mediaAttr->sourceUri_);
        rtpStream.rtpSession_->setMuted(mediaAttr->muted_);
 
        if (not isSubcall())
            emitSignal<libjami::CallSignal::VideoMuted>(getCallId(), mediaAttr->muted_);
    }
#endif
}
 
bool
SIPCall::updateAllMediaStreams(const std::vector<MediaAttribute>& mediaAttrList, bool isRemote)
{
    JAMI_DBG("[call:%s] New local media", getCallId().c_str());
 
    if (mediaAttrList.size() > PJ_ICE_MAX_COMP / 2) {
        JAMI_DEBUG("[call:{:s}] Too many media streams, limit it ({:d} vs {:d})",
                   getCallId().c_str(),
                   mediaAttrList.size(),
                   PJ_ICE_MAX_COMP);
        return false;
    }
 
    unsigned idx = 0;
    for (auto const& newMediaAttr : mediaAttrList) {
        JAMI_DBG("[call:%s] Media @%u: %s",
                 getCallId().c_str(),
                 idx++,
                 newMediaAttr.toString(true).c_str());
    }
 
    JAMI_DBG("[call:%s] Updating local media streams", getCallId().c_str());
 
    for (auto const& newAttr : mediaAttrList) {
        auto streamIdx = findRtpStreamIndex(newAttr.label_);
 
        if (streamIdx < 0) {
            // Media does not exist, add a new one.
            addMediaStream(newAttr);
            auto& stream = rtpStreams_.back();
            // If the remote asks for a new stream, our side sends nothing
            stream.mediaAttribute_->muted_ = isRemote ? true : stream.mediaAttribute_->muted_;
            createRtpSession(stream);
            JAMI_DBG("[call:%s] Added a new media stream [%s] @ index %i",
                     getCallId().c_str(),
                     stream.mediaAttribute_->label_.c_str(),
                     streamIdx);
        } else {
            updateMediaStream(newAttr, streamIdx);
        }
    }
 
    if (mediaAttrList.size() < rtpStreams_.size()) {
#ifdef ENABLE_VIDEO
        // If new media stream list got more media streams than current size, we can remove old media streams from conference
        for (auto i = mediaAttrList.size(); i < rtpStreams_.size(); ++i) {
            auto& stream = rtpStreams_[i];
            if (stream.rtpSession_->getMediaType() == MediaType::MEDIA_VIDEO)
                std::static_pointer_cast<video::VideoRtpSession>(stream.rtpSession_)
                    ->exitConference();
        }
#endif
        rtpStreams_.resize(mediaAttrList.size());
    }
    return true;
}
 
bool
SIPCall::isReinviteRequired(const std::vector<MediaAttribute>& mediaAttrList)
{
    if (mediaAttrList.size() != rtpStreams_.size())
        return true;
 
    for (auto const& newAttr : mediaAttrList) {
        auto streamIdx = findRtpStreamIndex(newAttr.label_);
 
        if (streamIdx < 0) {
            // Always needs a re-invite when a new media is added.
            return true;
        }
 
        // Changing the source needs a re-invite
        if (newAttr.sourceUri_ != rtpStreams_[streamIdx].mediaAttribute_->sourceUri_) {
            return true;
        }
 
#ifdef ENABLE_VIDEO
        if (newAttr.type_ == MediaType::MEDIA_VIDEO) {
            // For now, only video mute triggers a re-invite.
            // Might be done for audio as well if required.
            if (newAttr.muted_ != rtpStreams_[streamIdx].mediaAttribute_->muted_) {
                return true;
            }
        }
#endif
    }
 
    return false;
}
 
bool
SIPCall::isNewIceMediaRequired(const std::vector<MediaAttribute>& mediaAttrList)
{
    // Always needs a new ICE media if the peer does not support
    // re-invite without ICE renegotiation
    if (not peerSupportReuseIceInReinv_)
        return true;
 
    // Always needs a new ICE media when the number of media changes.
    if (mediaAttrList.size() != rtpStreams_.size())
        return true;
 
    for (auto const& newAttr : mediaAttrList) {
        auto streamIdx = findRtpStreamIndex(newAttr.label_);
        if (streamIdx < 0) {
            // Always needs a new ICE media when a media is added or replaced.
            return true;
        }
        auto const& currAttr = rtpStreams_[streamIdx].mediaAttribute_;
        if (newAttr.sourceUri_ != currAttr->sourceUri_) {
            // For now, media will be restarted if the source changes.
            // TODO. This should not be needed if the decoder/receiver
            // correctly handles dynamic media properties changes.
            return true;
        }
    }
 
    return false;
}
 
bool
SIPCall::requestMediaChange(const std::vector<libjami::MediaMap>& mediaList)
{
    std::lock_guard lk {callMutex_};
    auto mediaAttrList = MediaAttribute::buildMediaAttributesList(mediaList, isSrtpEnabled());
    bool hasFileSharing {false};
 
    for (const auto& media : mediaAttrList) {
        if (!media.enabled_ || media.sourceUri_.empty())
            continue;
 
        // Supported MRL schemes
        static const std::string sep = libjami::Media::VideoProtocolPrefix::SEPARATOR;
 
        const auto pos = media.sourceUri_.find(sep);
        if (pos == std::string::npos)
            continue;
 
        const auto prefix = media.sourceUri_.substr(0, pos);
        if ((pos + sep.size()) >= media.sourceUri_.size())
            continue;
 
        if (prefix == libjami::Media::VideoProtocolPrefix::FILE) {
            hasFileSharing = true;
            mediaPlayerId_ = media.sourceUri_;
#ifdef ENABLE_VIDEO
            createMediaPlayer(mediaPlayerId_);
#endif
        }
    }
 
    if (!hasFileSharing) {
#ifdef ENABLE_VIDEO
        closeMediaPlayer(mediaPlayerId_);
#endif
        mediaPlayerId_ = "";
    }
 
    // Disable video if disabled in the account.
    auto account = getSIPAccount();
    if (not account) {
        JAMI_ERROR("[call:{}] No account detected", getCallId());
        return false;
    }
    if (not account->isVideoEnabled()) {
        for (auto& mediaAttr : mediaAttrList) {
            if (mediaAttr.type_ == MediaType::MEDIA_VIDEO) {
                // This an API misuse. The new medialist should not contain video
                // if it was disabled in the account settings.
                JAMI_ERROR("[call:{}] New media has video, but it's disabled in the account. "
                           "Ignoring the change request!",
                           getCallId());
                return false;
            }
        }
    }
 
    // If the peer does not support multi-stream and the size of the new
    // media list is different from the current media list, the media
    // change request will be ignored.
    if (not peerSupportMultiStream_ and rtpStreams_.size() != mediaAttrList.size()) {
        JAMI_WARNING("[call:{}] Peer does not support multi-stream. Media change request ignored",
                     getCallId());
        return false;
    }
 
    // If the peer does not support multi-audio-stream and the new
    // media list has more than one audio. Ignore the one that comes from a file.
    if (not peerSupportMultiAudioStream_ and rtpStreams_.size() != mediaAttrList.size() and hasFileSharing) {
        JAMI_WARNING("[call:{}] Peer does not support multi-audio-stream. New Audio will be ignored",
                     getCallId());
        for (auto it = mediaAttrList.begin(); it != mediaAttrList.end();) {
            if (it->type_ == MediaType::MEDIA_AUDIO and !it->sourceUri_.empty() and mediaPlayerId_ == it->sourceUri_) {
                it = mediaAttrList.erase(it);
                continue;
            }
            ++it;
        }
    }
 
    // If peer doesn't support multiple ice, keep only the last audio/video
    // This keep the old behaviour (if sharing both camera + sharing a file, will keep the shared file)
    if (!peerSupportMultiIce_) {
        if (mediaList.size() > 2)
            JAMI_WARNING("[call:{}] Peer does not support more than 2 ICE medias. "
                         "Media change request modified",
                         getCallId());
        MediaAttribute audioAttr;
        MediaAttribute videoAttr;
        auto hasVideo = false, hasAudio = false;
        for (auto it = mediaAttrList.rbegin(); it != mediaAttrList.rend(); ++it) {
            if (it->type_ == MediaType::MEDIA_VIDEO && !hasVideo) {
                videoAttr = *it;
                videoAttr.label_ = sip_utils::DEFAULT_VIDEO_STREAMID;
                hasVideo = true;
            } else if (it->type_ == MediaType::MEDIA_AUDIO && !hasAudio) {
                audioAttr = *it;
                audioAttr.label_ = sip_utils::DEFAULT_AUDIO_STREAMID;
                hasAudio = true;
            }
            if (hasVideo && hasAudio)
                break;
        }
        mediaAttrList.clear();
        // Note: use the order VIDEO/AUDIO to avoid reinvite.
        mediaAttrList.emplace_back(audioAttr);
        if (hasVideo)
            mediaAttrList.emplace_back(videoAttr);
    }
 
    if (mediaAttrList.empty()) {
        JAMI_ERROR("[call:{}] Invalid media change request: new media list is empty", getCallId());
        return false;
    }
    JAMI_DEBUG("[call:{}] Requesting media change. List of new media:", getCallId());
 
    unsigned idx = 0;
    for (auto const& newMediaAttr : mediaAttrList) {
        JAMI_DEBUG("[call:{}] Media @{:d}: {}",
                   getCallId(),
                   idx++,
                   newMediaAttr.toString(true));
    }
 
    auto needReinvite = isReinviteRequired(mediaAttrList);
    auto needNewIce = isNewIceMediaRequired(mediaAttrList);
 
    if (!updateAllMediaStreams(mediaAttrList, false))
        return false;
 
    if (needReinvite) {
        JAMI_DEBUG("[call:{}] Media change requires a new negotiation (re-invite)",
                   getCallId());
        requestReinvite(mediaAttrList, needNewIce);
    } else {
        JAMI_DEBUG("[call:{}] Media change DOES NOT require a new negotiation (re-invite)",
                   getCallId());
        reportMediaNegotiationStatus();
    }
 
    return true;
}
 
std::vector<std::map<std::string, std::string>>
SIPCall::currentMediaList() const
{
    return MediaAttribute::mediaAttributesToMediaMaps(getMediaAttributeList());
}
 
std::vector<MediaAttribute>
SIPCall::getMediaAttributeList() const
{
    std::lock_guard lk {callMutex_};
    std::vector<MediaAttribute> mediaList;
    mediaList.reserve(rtpStreams_.size());
    for (auto const& stream : rtpStreams_)
        mediaList.emplace_back(*stream.mediaAttribute_);
    return mediaList;
}
 
std::map<std::string, bool>
SIPCall::getAudioStreams() const
{
    std::map<std::string, bool> audioMedias {};
    auto medias = getMediaAttributeList();
    for (const auto& media : medias) {
        if (media.type_ == MEDIA_AUDIO) {
            auto label = fmt::format("{}_{}", getCallId(), media.label_);
            audioMedias.emplace(label, media.muted_);
        }
    }
    return audioMedias;
}
 
void
SIPCall::onMediaNegotiationComplete()
{
    runOnMainThread([w = weak()] {
        if (auto this_ = w.lock()) {
            std::lock_guard lk {this_->callMutex_};
            JAMI_DBG("[call:%s] Media negotiation complete", this_->getCallId().c_str());
 
            // If the call has already ended, we don't need to start the media.
            if (not this_->inviteSession_
                or this_->inviteSession_->state == PJSIP_INV_STATE_DISCONNECTED
                or not this_->sdp_) {
                return;
            }
 
            // This method is called to report media negotiation (SDP) for initial
            // invite or subsequent invites (re-invite).
            // If ICE is negotiated, the media update will be handled in the
            // ICE callback, otherwise, it will be handled here.
            // Note that ICE can be negotiated in the first invite and not negotiated
            // in the re-invite. In this case, the media transport is unchanged (reused).
            if (this_->isIceEnabled() and this_->remoteHasValidIceAttributes()) {
                if (not this_->isSubcall()) {
                    // Start ICE checks. Media will be started once ICE checks complete.
                    this_->startIceMedia();
                }
            } else {
                // Update the negotiated media.
                if (this_->mediaRestartRequired_) {
                    this_->setupNegotiatedMedia();
                    // No ICE, start media now.
                    JAMI_WARN("[call:%s] ICE media disabled, using default media ports",
                              this_->getCallId().c_str());
                    // Start the media.
                    this_->stopAllMedia();
                    this_->startAllMedia();
                }
 
                //this_->updateRemoteMedia();
                this_->reportMediaNegotiationStatus();
            }
        }
    });
}
 
void
SIPCall::reportMediaNegotiationStatus()
{
    // Notify using the parent Id if it's a subcall.
    auto callId = isSubcall() ? parent_->getCallId() : getCallId();
    emitSignal<libjami::CallSignal::MediaNegotiationStatus>(
        callId,
        libjami::Media::MediaNegotiationStatusEvents::NEGOTIATION_SUCCESS,
        currentMediaList());
    auto previousState = isAudioOnly_;
    auto newState = !hasVideo();
 
    if (previousState != newState && Call::isRecording()) {
        deinitRecorder();
        toggleRecording();
        pendingRecord_ = true;
    }
    isAudioOnly_ = newState;
 
    if (pendingRecord_ && readyToRecord_) {
        toggleRecording();
    }
}
 
void
SIPCall::startIceMedia()
{
    JAMI_DBG("[call:%s] Starting ICE", getCallId().c_str());
    auto iceMedia = getIceMedia();
    if (not iceMedia or iceMedia->isFailed()) {
        JAMI_ERR("[call:%s] Media ICE init failed", getCallId().c_str());
        onFailure(EIO);
        return;
    }
 
    if (iceMedia->isStarted()) {
        // NOTE: for incoming calls, the ICE is already there and running
        if (iceMedia->isRunning())
            onIceNegoSucceed();
        return;
    }
 
    if (not iceMedia->isInitialized()) {
        // In this case, onInitDone will occurs after the startIceMedia
        waitForIceInit_ = true;
        return;
    }
 
    // Start transport on SDP data and wait for negotiation
    if (!sdp_)
        return;
    auto rem_ice_attrs = sdp_->getIceAttributes();
    if (rem_ice_attrs.ufrag.empty() or rem_ice_attrs.pwd.empty()) {
        JAMI_ERR("[call:%s] Missing remote media ICE attributes", getCallId().c_str());
        onFailure(EIO);
        return;
    }
    if (not iceMedia->startIce(rem_ice_attrs, getAllRemoteCandidates(*iceMedia))) {
        JAMI_ERR("[call:%s] ICE media failed to start", getCallId().c_str());
        onFailure(EIO);
    }
}
 
void
SIPCall::onIceNegoSucceed()
{
    std::lock_guard lk {callMutex_};
 
    JAMI_DBG("[call:%s] ICE negotiation succeeded", getCallId().c_str());
 
    // Check if the call is already ended, so we don't need to restart medias
    // This is typically the case in a multi-device context where one device
    // can stop a call. So do not start medias
    if (not inviteSession_ or inviteSession_->state == PJSIP_INV_STATE_DISCONNECTED or not sdp_) {
        JAMI_ERR("[call:%s] ICE negotiation succeeded, but call is in invalid state",
                 getCallId().c_str());
        return;
    }
 
    // Update the negotiated media.
    setupNegotiatedMedia();
 
    // If this callback is for a re-invite session then update
    // the ICE media transport.
    if (isIceEnabled())
        switchToIceReinviteIfNeeded();
 
    for (unsigned int idx = 0, compId = 1; idx < rtpStreams_.size(); idx++, compId += 2) {
        // Create sockets for RTP and RTCP, and start the session.
        auto& rtpStream = rtpStreams_[idx];
        rtpStream.rtpSocket_ = newIceSocket(compId);
 
        if (not rtcpMuxEnabled_) {
            rtpStream.rtcpSocket_ = newIceSocket(compId + 1);
        }
    }
 
    // Start/Restart the media using the new transport
    stopAllMedia();
    startAllMedia();
    reportMediaNegotiationStatus();
}
 
bool
SIPCall::checkMediaChangeRequest(const std::vector<libjami::MediaMap>& remoteMediaList)
{
    // The current media is considered to have changed if one of the
    // following condtions is true:
    //
    // - the number of media changed
    // - the type of one of the media changed (unlikely)
    // - one of the media was enabled/disabled
 
    JAMI_DBG("[call:%s] Received a media change request", getCallId().c_str());
 
    auto remoteMediaAttrList = MediaAttribute::buildMediaAttributesList(remoteMediaList,
                                                                        isSrtpEnabled());
    if (remoteMediaAttrList.size() != rtpStreams_.size())
        return true;
 
    for (size_t i = 0; i < rtpStreams_.size(); i++) {
        if (remoteMediaAttrList[i].type_ != rtpStreams_[i].mediaAttribute_->type_)
            return true;
        if (remoteMediaAttrList[i].enabled_ != rtpStreams_[i].mediaAttribute_->enabled_)
            return true;
    }
 
    return false;
}
 
void
SIPCall::handleMediaChangeRequest(const std::vector<libjami::MediaMap>& remoteMediaList)
{
    JAMI_DBG("[call:%s] Handling media change request", getCallId().c_str());
 
    auto account = getAccount().lock();
    if (not account) {
        JAMI_ERR("No account detected");
        return;
    }
 
    // If the offered media does not differ from the current local media, the
    // request is answered using the current local media.
    if (not checkMediaChangeRequest(remoteMediaList)) {
        answerMediaChangeRequest(
            MediaAttribute::mediaAttributesToMediaMaps(getMediaAttributeList()));
        return;
    }
 
    if (account->isAutoAnswerEnabled()) {
        // NOTE:
        // Since the auto-answer is enabled in the account, newly
        // added media are accepted too.
        // This also means that if original call was an audio-only call,
        // the local camera will be enabled, unless the video is disabled
        // in the account settings.
 
        std::vector<libjami::MediaMap> newMediaList;
        newMediaList.reserve(remoteMediaList.size());
        for (auto const& stream : rtpStreams_) {
            newMediaList.emplace_back(MediaAttribute::toMediaMap(*stream.mediaAttribute_));
        }
 
        assert(remoteMediaList.size() > 0);
        if (remoteMediaList.size() > newMediaList.size()) {
            for (auto idx = newMediaList.size(); idx < remoteMediaList.size(); idx++) {
                newMediaList.emplace_back(remoteMediaList[idx]);
            }
        }
        answerMediaChangeRequest(newMediaList, true);
        return;
    }
 
    // Report the media change request.
    emitSignal<libjami::CallSignal::MediaChangeRequested>(getAccountId(),
                                                          getCallId(),
                                                          remoteMediaList);
}
 
pj_status_t
SIPCall::onReceiveReinvite(const pjmedia_sdp_session* offer, pjsip_rx_data* rdata)
{
    JAMI_DBG("[call:%s] Received a re-invite", getCallId().c_str());
 
    pj_status_t res = PJ_SUCCESS;
 
    if (not sdp_) {
        JAMI_ERR("SDP session is invalid");
        return res;
    }
 
    sdp_->clearIce();
    sdp_->setActiveRemoteSdpSession(nullptr);
    sdp_->setActiveLocalSdpSession(nullptr);
 
    auto acc = getSIPAccount();
    if (not acc) {
        JAMI_ERR("No account detected");
        return res;
    }
 
    Sdp::printSession(offer, "Remote session (media change request)", SdpDirection::OFFER);
 
    sdp_->setReceivedOffer(offer);
 
    // Note: For multistream, here we must ignore disabled remote medias, because
    // we will answer from our medias and remote enabled medias.
    // Example: if remote disables its camera and share its screen, the offer will
    // have an active and a disabled media (with port = 0).
    // In this case, if we have only one video, we can just negotiate 1 video instead of 2
    // with 1 disabled.
    // cf. pjmedia_sdp_neg_modify_local_offer2 for more details.
    auto const& mediaAttrList = Sdp::getMediaAttributeListFromSdp(offer, true);
    if (mediaAttrList.empty()) {
        JAMI_WARN("[call:%s] Media list is empty, ignoring", getCallId().c_str());
        return res;
    }
 
    if (upnp_) {
        openPortsUPnP();
    }
 
    pjsip_tx_data* tdata = nullptr;
    if (pjsip_inv_initial_answer(inviteSession_.get(), rdata, PJSIP_SC_TRYING, NULL, NULL, &tdata)
        != PJ_SUCCESS) {
        JAMI_ERR("[call:%s] Unable to create answer TRYING", getCallId().c_str());
        return res;
    }
 
    dht::ThreadPool::io().run([callWkPtr = weak(), mediaAttrList] {
        if (auto call = callWkPtr.lock()) {
            // Report the change request.
            auto const& remoteMediaList = MediaAttribute::mediaAttributesToMediaMaps(mediaAttrList);
            if (auto conf = call->getConference()) {
                conf->handleMediaChangeRequest(call, remoteMediaList);
            } else {
                call->handleMediaChangeRequest(remoteMediaList);
            }
        }
    });
 
    return res;
}
 
void
SIPCall::onReceiveOfferIn200OK(const pjmedia_sdp_session* offer)
{
    if (not rtpStreams_.empty()) {
        JAMI_ERR("[call:%s] Unexpected offer in '200 OK' answer", getCallId().c_str());
        return;
    }
 
    auto acc = getSIPAccount();
    if (not acc) {
        JAMI_ERR("No account detected");
        return;
    }
 
    if (not sdp_) {
        JAMI_ERR("Invalid SDP session");
        return;
    }
 
    JAMI_DBG("[call:%s] Received an offer in '200 OK' answer", getCallId().c_str());
 
    auto mediaList = Sdp::getMediaAttributeListFromSdp(offer);
    // If this method is called, it means we are expecting an offer
    // in the 200OK answer.
    if (mediaList.empty()) {
        JAMI_WARN("[call:%s] Remote media list is empty, ignoring", getCallId().c_str());
        return;
    }
 
    Sdp::printSession(offer, "Remote session (offer in 200 OK answer)", SdpDirection::OFFER);
 
    sdp_->clearIce();
    sdp_->setActiveRemoteSdpSession(nullptr);
    sdp_->setActiveLocalSdpSession(nullptr);
 
    sdp_->setReceivedOffer(offer);
 
    // If we send an empty offer, video will be accepted only if locally
    // enabled by the user.
    for (auto& mediaAttr : mediaList) {
        if (mediaAttr.type_ == MediaType::MEDIA_VIDEO and not acc->isVideoEnabled()) {
            mediaAttr.enabled_ = false;
        }
    }
 
    initMediaStreams(mediaList);
 
    sdp_->processIncomingOffer(mediaList);
 
    if (upnp_) {
        openPortsUPnP();
    }
 
    if (isIceEnabled() and remoteHasValidIceAttributes()) {
        setupIceResponse();
    }
 
    sdp_->startNegotiation();
 
    if (pjsip_inv_set_sdp_answer(inviteSession_.get(), sdp_->getLocalSdpSession()) != PJ_SUCCESS) {
        JAMI_ERR("[call:%s] Unable to start media negotiation for a re-invite request",
                 getCallId().c_str());
    }
}
 
void
SIPCall::openPortsUPnP()
{
    if (not sdp_) {
        JAMI_ERR("[call:%s] Current SDP instance is invalid", getCallId().c_str());
        return;
    }
 
    JAMI_DBG("[call:%s] Opening ports via UPnP for SDP session", getCallId().c_str());
 
    // RTP port.
    upnp_->reserveMapping(sdp_->getLocalAudioPort(), dhtnet::upnp::PortType::UDP);
    // RTCP port.
    upnp_->reserveMapping(sdp_->getLocalAudioControlPort(), dhtnet::upnp::PortType::UDP);
 
#ifdef ENABLE_VIDEO
    // RTP port.
    upnp_->reserveMapping(sdp_->getLocalVideoPort(), dhtnet::upnp::PortType::UDP);
    // RTCP port.
    upnp_->reserveMapping(sdp_->getLocalVideoControlPort(), dhtnet::upnp::PortType::UDP);
#endif
}
 
std::map<std::string, std::string>
SIPCall::getDetails() const
{
    auto acc = getSIPAccount();
    if (!acc) {
        JAMI_ERR("No account detected");
        return {};
    }
 
    auto details = Call::getDetails();
 
    details.emplace(libjami::Call::Details::PEER_HOLDING, peerHolding_ ? TRUE_STR : FALSE_STR);
 
    for (auto const& stream : rtpStreams_) {
        if (stream.mediaAttribute_->type_ == MediaType::MEDIA_VIDEO) {
            details.emplace(libjami::Call::Details::VIDEO_SOURCE,
                            stream.mediaAttribute_->sourceUri_);
#ifdef ENABLE_VIDEO
            if (auto const& rtpSession = stream.rtpSession_) {
                if (auto codec = rtpSession->getCodec()) {
                    details.emplace(libjami::Call::Details::VIDEO_CODEC,
                                    codec->name);
                    details.emplace(libjami::Call::Details::VIDEO_MIN_BITRATE,
                                    std::to_string(codec->minBitrate));
                    details.emplace(libjami::Call::Details::VIDEO_MAX_BITRATE,
                                    std::to_string(codec->maxBitrate));
                    if (const auto& curvideoRtpSession
                        = std::static_pointer_cast<video::VideoRtpSession>(rtpSession)) {
                        details.emplace(libjami::Call::Details::VIDEO_BITRATE,
                                        std::to_string(curvideoRtpSession->getVideoBitrateInfo()
                                                       .videoBitrateCurrent));
                    }
                } else
                    details.emplace(libjami::Call::Details::VIDEO_CODEC, "");
            }
#endif
        } else if (stream.mediaAttribute_->type_ == MediaType::MEDIA_AUDIO) {
            if (auto const& rtpSession = stream.rtpSession_) {
                if (auto codec = rtpSession->getCodec()) {
                    details.emplace(libjami::Call::Details::AUDIO_CODEC,
                                    codec->name);
                    details.emplace(libjami::Call::Details::AUDIO_SAMPLE_RATE,
                                    codec->getCodecSpecifications()
                                    [libjami::Account::ConfProperties::CodecInfo::SAMPLE_RATE]);
                } else {
                    details.emplace(libjami::Call::Details::AUDIO_CODEC, "");
                    details.emplace(libjami::Call::Details::AUDIO_SAMPLE_RATE, "");
                }
            }
        }
    }
 
#if HAVE_RINGNS
    if (not peerRegisteredName_.empty())
        details.emplace(libjami::Call::Details::REGISTERED_NAME, peerRegisteredName_);
#endif
 
#ifdef ENABLE_CLIENT_CERT
    std::lock_guard lk {callMutex_};
    if (transport_ and transport_->isSecure()) {
        const auto& tlsInfos = transport_->getTlsInfos();
        if (tlsInfos.cipher != PJ_TLS_UNKNOWN_CIPHER) {
            const auto& cipher = pj_ssl_cipher_name(tlsInfos.cipher);
            details.emplace(libjami::TlsTransport::TLS_CIPHER, cipher ? cipher : "");
        } else {
            details.emplace(libjami::TlsTransport::TLS_CIPHER, "");
        }
        if (tlsInfos.peerCert) {
            details.emplace(libjami::TlsTransport::TLS_PEER_CERT, tlsInfos.peerCert->toString());
            auto ca = tlsInfos.peerCert->issuer;
            unsigned n = 0;
            while (ca) {
                std::ostringstream name_str;
                name_str << libjami::TlsTransport::TLS_PEER_CA_ << n++;
                details.emplace(name_str.str(), ca->toString());
                ca = ca->issuer;
            }
            details.emplace(libjami::TlsTransport::TLS_PEER_CA_NUM, std::to_string(n));
        } else {
            details.emplace(libjami::TlsTransport::TLS_PEER_CERT, "");
            details.emplace(libjami::TlsTransport::TLS_PEER_CA_NUM, "");
        }
    }
#endif
    if (auto transport = getIceMedia()) {
        if (transport && transport->isRunning())
            details.emplace(libjami::Call::Details::SOCKETS, transport->link().c_str());
    }
    return details;
}
 
void
SIPCall::enterConference(std::shared_ptr<Conference> conference)
{
    JAMI_DEBUG("[call:{}] Entering conference [{}]",
               getCallId(),
               conference->getConfId());
    conf_ = conference;
    // Unbind audio. It will be rebinded in the conference if needed
    auto const hasAudio = !getRtpSessionList(MediaType::MEDIA_AUDIO).empty();
    if (hasAudio) {
        auto& rbPool = Manager::instance().getRingBufferPool();
        auto medias = getAudioStreams();
        for (const auto& media : medias) {
            rbPool.unbindRingBuffers(media.first, RingBufferPool::DEFAULT_ID);
        }
        rbPool.flush(RingBufferPool::DEFAULT_ID);
    }
 
#ifdef ENABLE_VIDEO
    if (conference->isVideoEnabled())
        for (const auto& videoRtp : getRtpSessionList(MediaType::MEDIA_VIDEO))
            std::static_pointer_cast<video::VideoRtpSession>(videoRtp)->enterConference(*conference);
#endif
 
#ifdef ENABLE_PLUGIN
    clearCallAVStreams();
#endif
}
 
void
SIPCall::exitConference()
{
    std::lock_guard lk {callMutex_};
    JAMI_DBG("[call:%s] Leaving conference", getCallId().c_str());
 
    auto const hasAudio = !getRtpSessionList(MediaType::MEDIA_AUDIO).empty();
    if (hasAudio) {
        auto& rbPool = Manager::instance().getRingBufferPool();
        auto medias = getAudioStreams();
        for (const auto& media : medias) {
            if (!media.second) {
                rbPool.bindRingBuffers(media.first, RingBufferPool::DEFAULT_ID);
            }
        }
        rbPool.flush(RingBufferPool::DEFAULT_ID);
    }
#ifdef ENABLE_VIDEO
    for (const auto& videoRtp : getRtpSessionList(MediaType::MEDIA_VIDEO))
        std::static_pointer_cast<video::VideoRtpSession>(videoRtp)->exitConference();
#endif
#ifdef ENABLE_PLUGIN
    createCallAVStreams();
#endif
    conf_.reset();
}
 
void
SIPCall::setActiveMediaStream(const std::string& accountUri,
    const std::string& deviceId,
    const std::string& streamId,
    const bool& state)
{
    auto remoteStreamId = streamId;
#ifdef ENABLE_VIDEO
    {
        std::lock_guard lk(sinksMtx_);
        const auto& localIt = local2RemoteSinks_.find(streamId);
        if (localIt != local2RemoteSinks_.end()) {
            remoteStreamId = localIt->second;
        }
    }
#endif
 
    if (Call::conferenceProtocolVersion() == 1) {
        Json::Value sinkVal;
        sinkVal["active"] = state;
        Json::Value mediasObj;
        mediasObj[remoteStreamId] = sinkVal;
        Json::Value deviceVal;
        deviceVal["medias"] = mediasObj;
        Json::Value deviceObj;
        deviceObj[deviceId] = deviceVal;
        Json::Value accountVal;
        deviceVal["devices"] = deviceObj;
        Json::Value root;
        root[accountUri] = deviceVal;
        root["version"] = 1;
        Call::sendConfOrder(root);
    } else if (Call::conferenceProtocolVersion() == 0) {
        Json::Value root;
        root["activeParticipant"] = accountUri;
        Call::sendConfOrder(root);
    }
}
 
#ifdef ENABLE_VIDEO
void
SIPCall::setRotation(int streamIdx, int rotation)
{
    // Retrigger on another thread to avoid to lock PJSIP
    dht::ThreadPool::io().run([w = weak(), streamIdx, rotation] {
        if (auto shared = w.lock()) {
            std::lock_guard lk {shared->callMutex_};
            shared->rotation_ = rotation;
            if (streamIdx == -1) {
                for (const auto& videoRtp : shared->getRtpSessionList(MediaType::MEDIA_VIDEO))
                    std::static_pointer_cast<video::VideoRtpSession>(videoRtp)->setRotation(rotation);
            } else if (streamIdx > -1 && streamIdx < static_cast<int>(shared->rtpStreams_.size())) {
                // Apply request for requested stream
                auto& stream = shared->rtpStreams_[streamIdx];
                if (stream.rtpSession_ && stream.rtpSession_->getMediaType() == MediaType::MEDIA_VIDEO)
                    std::static_pointer_cast<video::VideoRtpSession>(stream.rtpSession_)
                        ->setRotation(rotation);
            }
        }
    });
 
}
 
void
SIPCall::createSinks(ConfInfo& infos)
{
    std::lock_guard lk(callMutex_);
    std::lock_guard lkS(sinksMtx_);
    if (!hasVideo())
        return;
 
    for (auto& participant : infos) {
        if (string_remove_suffix(participant.uri, '@') == account_.lock()->getUsername()
            && participant.device
                == std::dynamic_pointer_cast<JamiAccount>(account_.lock())->currentDeviceId()) {
            for (auto iter = rtpStreams_.begin(); iter != rtpStreams_.end(); iter++) {
                if (!iter->mediaAttribute_ || iter->mediaAttribute_->type_ == MediaType::MEDIA_AUDIO) {
                    continue;
                }
                auto localVideo = std::static_pointer_cast<video::VideoRtpSession>(iter->rtpSession_)
                                    ->getVideoLocal().get();
                auto size = std::make_pair(10, 10);
                if (localVideo) {
                    size = std::make_pair(localVideo->getWidth(), localVideo->getHeight());
                }
                const auto& mediaAttribute = iter->mediaAttribute_;
                if (participant.sinkId.find(mediaAttribute->label_) != std::string::npos) {
                    local2RemoteSinks_[mediaAttribute->sourceUri_] = participant.sinkId;
                    participant.sinkId = mediaAttribute->sourceUri_;
                    participant.videoMuted = mediaAttribute->muted_;
                    participant.w = size.first;
                    participant.h = size.second;
                    participant.x = 0;
                    participant.y = 0;
                }
            }
        }
    }
 
    std::vector<std::shared_ptr<video::VideoFrameActiveWriter>> sinks;
    for (const auto& videoRtp : getRtpSessionList(MediaType::MEDIA_VIDEO)) {
        auto& videoReceive = std::static_pointer_cast<video::VideoRtpSession>(videoRtp)
                                 ->getVideoReceive();
        if (!videoReceive)
            continue;
        sinks.emplace_back(
            std::static_pointer_cast<video::VideoFrameActiveWriter>(videoReceive->getSink()));
    }
    auto conf = conf_.lock();
    const auto& id = conf ? conf->getConfId() : getCallId();
    Manager::instance().createSinkClients(id, infos, sinks, callSinksMap_);
}
#endif
 
std::vector<std::shared_ptr<RtpSession>>
SIPCall::getRtpSessionList(MediaType type) const
{
    std::vector<std::shared_ptr<RtpSession>> rtpList;
    rtpList.reserve(rtpStreams_.size());
    for (auto const& stream : rtpStreams_) {
        if (type == MediaType::MEDIA_ALL || stream.rtpSession_->getMediaType() == type)
            rtpList.emplace_back(stream.rtpSession_);
    }
    return rtpList;
}
 
void
SIPCall::monitor() const
{
    if (isSubcall())
        return;
    auto acc = getSIPAccount();
    if (!acc) {
        JAMI_ERR("No account detected");
        return;
    }
    JAMI_DBG("- Call %s with %s:", getCallId().c_str(), getPeerNumber().c_str());
    JAMI_DBG("\t- Duration: %s", dht::print_duration(getCallDuration()).c_str());
    for (const auto& stream : rtpStreams_)
        JAMI_DBG("\t- Media: %s", stream.mediaAttribute_->toString(true).c_str());
#ifdef ENABLE_VIDEO
    if (auto codec = getVideoCodec())
        JAMI_DBG("\t- Video codec: %s", codec->name.c_str());
#endif
    if (auto transport = getIceMedia()) {
        if (transport->isRunning())
            JAMI_DBG("\t- Media stream(s): %s", transport->link().c_str());
    }
}
 
bool
SIPCall::toggleRecording()
{
    pendingRecord_ = true;
    if (not readyToRecord_)
        return true;
 
    // add streams to recorder before starting the record
    if (not Call::isRecording()) {
        auto account = getSIPAccount();
        if (!account) {
            JAMI_ERR("No account detected");
            return false;
        }
        auto title = fmt::format("Conversation at %TIMESTAMP between {} and {}",
                                 account->getUserUri(),
                                 peerUri_);
        recorder_->setMetadata(title, ""); // use default description
        for (const auto& rtpSession : getRtpSessionList())
            rtpSession->initRecorder();
    } else {
        updateRecState(false);
    }
    pendingRecord_ = false;
    auto state = Call::toggleRecording();
    if (state)
        updateRecState(state);
    return state;
}
 
void
SIPCall::deinitRecorder()
{
    for (const auto& rtpSession : getRtpSessionList())
        rtpSession->deinitRecorder();
}
 
void
SIPCall::InvSessionDeleter::operator()(pjsip_inv_session* inv) const noexcept
{
    // prevent this from getting accessed in callbacks
    // JAMI_WARN: this is not thread-safe!
    if (!inv)
        return;
    inv->mod_data[Manager::instance().sipVoIPLink().getModId()] = nullptr;
    // NOTE: the counter is incremented by sipvoiplink (transaction_request_cb)
    pjsip_inv_dec_ref(inv);
}
 
bool
SIPCall::createIceMediaTransport(bool isReinvite)
{
    auto mediaTransport = Manager::instance().getIceTransportFactory()->createTransport(getCallId());
    if (mediaTransport) {
        JAMI_DBG("[call:%s] Successfully created media ICE transport [ice:%p]",
                 getCallId().c_str(),
                 mediaTransport.get());
    } else {
        JAMI_ERR("[call:%s] Failed to create media ICE transport", getCallId().c_str());
        return {};
    }
 
    setIceMedia(mediaTransport, isReinvite);
 
    return mediaTransport != nullptr;
}
 
bool
SIPCall::initIceMediaTransport(bool master, std::optional<dhtnet::IceTransportOptions> options)
{
    auto acc = getSIPAccount();
    if (!acc) {
        JAMI_ERR("No account detected");
        return false;
    }
 
    JAMI_DBG("[call:%s] Init media ICE transport", getCallId().c_str());
 
    auto const& iceMedia = getIceMedia();
    if (not iceMedia) {
        JAMI_ERR("[call:%s] Invalid media ICE transport", getCallId().c_str());
        return false;
    }
 
    auto iceOptions = options == std::nullopt ? acc->getIceOptions() : *options;
 
    auto optOnInitDone = std::move(iceOptions.onInitDone);
    auto optOnNegoDone = std::move(iceOptions.onNegoDone);
    iceOptions.onInitDone = [w = weak(), cb = std::move(optOnInitDone)](bool ok) {
        runOnMainThread([w = std::move(w), cb = std::move(cb), ok] {
            auto call = w.lock();
            if (cb)
                cb(ok);
            if (!ok or !call or !call->waitForIceInit_.exchange(false))
                return;
 
            std::lock_guard lk {call->callMutex_};
            auto rem_ice_attrs = call->sdp_->getIceAttributes();
            // Init done but no remote_ice_attributes, the ice->start will be triggered later
            if (rem_ice_attrs.ufrag.empty() or rem_ice_attrs.pwd.empty())
                return;
            call->startIceMedia();
        });
    };
    iceOptions.onNegoDone = [w = weak(), cb = std::move(optOnNegoDone)](bool ok) {
        runOnMainThread([w = std::move(w), cb = std::move(cb), ok] {
            if (cb)
                cb(ok);
            if (auto call = w.lock()) {
                // The ICE is related to subcalls, but medias are handled by parent call
                std::lock_guard lk {call->callMutex_};
                call = call->isSubcall() ? std::dynamic_pointer_cast<SIPCall>(call->parent_) : call;
                if (!ok) {
                    JAMI_ERR("[call:%s] Media ICE negotiation failed", call->getCallId().c_str());
                    call->onFailure(EIO);
                    return;
                }
                call->onIceNegoSucceed();
            }
        });
    };
 
    iceOptions.master = master;
    iceOptions.streamsCount = static_cast<unsigned>(rtpStreams_.size());
    // Each RTP stream requires a pair of ICE components (RTP + RTCP).
    iceOptions.compCountPerStream = ICE_COMP_COUNT_PER_STREAM;
    iceOptions.qosType.reserve(rtpStreams_.size() * ICE_COMP_COUNT_PER_STREAM);
    for (const auto& stream : rtpStreams_) {
        iceOptions.qosType.push_back(stream.mediaAttribute_->type_ == MediaType::MEDIA_AUDIO
                                     ? dhtnet::QosType::VOICE
                                     : dhtnet::QosType::VIDEO);
        iceOptions.qosType.push_back(dhtnet::QosType::CONTROL);
    }
 
    // Init ICE.
    iceMedia->initIceInstance(iceOptions);
 
    return true;
}
 
std::vector<std::string>
SIPCall::getLocalIceCandidates(unsigned compId) const
{
    std::lock_guard lk(transportMtx_);
    if (not iceMedia_) {
        JAMI_WARN("[call:%s] No media ICE transport", getCallId().c_str());
        return {};
    }
    return iceMedia_->getLocalCandidates(compId);
}
 
void
SIPCall::resetTransport(std::shared_ptr<dhtnet::IceTransport>&& transport)
{
    // Move the transport to another thread and destroy it there if possible
    if (transport) {
        dht::ThreadPool::io().run(
            [transport = std::move(transport)]() mutable { transport.reset(); });
    }
}
 
void
SIPCall::merge(Call& call)
{
    JAMI_DBG("[call:%s] Merge subcall %s", getCallId().c_str(), call.getCallId().c_str());
 
    // This static cast is safe as this method is private and overload Call::merge
    auto& subcall = static_cast<SIPCall&>(call);
 
    std::lock(callMutex_, subcall.callMutex_);
    std::lock_guard lk1 {callMutex_, std::adopt_lock};
    std::lock_guard lk2 {subcall.callMutex_, std::adopt_lock};
    inviteSession_ = std::move(subcall.inviteSession_);
    if (inviteSession_)
        inviteSession_->mod_data[Manager::instance().sipVoIPLink().getModId()] = this;
    setSipTransport(std::move(subcall.sipTransport_), std::move(subcall.contactHeader_));
    sdp_ = std::move(subcall.sdp_);
    peerHolding_ = subcall.peerHolding_;
    upnp_ = std::move(subcall.upnp_);
    localAudioPort_ = subcall.localAudioPort_;
    localVideoPort_ = subcall.localVideoPort_;
    peerUserAgent_ = subcall.peerUserAgent_;
    peerSupportMultiStream_ = subcall.peerSupportMultiStream_;
    peerSupportMultiAudioStream_ = subcall.peerSupportMultiAudioStream_;
    peerSupportMultiIce_ = subcall.peerSupportMultiIce_;
    peerAllowedMethods_ = subcall.peerAllowedMethods_;
    peerSupportReuseIceInReinv_ = subcall.peerSupportReuseIceInReinv_;
 
    Call::merge(subcall);
    if (isIceEnabled())
        startIceMedia();
}
 
bool
SIPCall::remoteHasValidIceAttributes() const
{
    if (not sdp_) {
        throw std::runtime_error("Must have a valid SDP Session");
    }
 
    auto rem_ice_attrs = sdp_->getIceAttributes();
    if (rem_ice_attrs.ufrag.empty()) {
        JAMI_DBG("[call:%s] No ICE username fragment attribute in remote SDP", getCallId().c_str());
        return false;
    }
 
    if (rem_ice_attrs.pwd.empty()) {
        JAMI_DBG("[call:%s] No ICE password attribute in remote SDP", getCallId().c_str());
        return false;
    }
 
    return true;
}
 
void
SIPCall::setIceMedia(std::shared_ptr<dhtnet::IceTransport> ice, bool isReinvite)
{
    std::lock_guard lk(transportMtx_);
 
    if (isReinvite) {
        JAMI_DBG("[call:%s] Setting re-invite ICE session [%p]", getCallId().c_str(), ice.get());
        resetTransport(std::move(reinvIceMedia_));
        reinvIceMedia_ = std::move(ice);
    } else {
        JAMI_DBG("[call:%s] Setting ICE session [%p]", getCallId().c_str(), ice.get());
        resetTransport(std::move(iceMedia_));
        iceMedia_ = std::move(ice);
    }
}
 
void
SIPCall::switchToIceReinviteIfNeeded()
{
    std::lock_guard lk(transportMtx_);
 
    if (reinvIceMedia_) {
        JAMI_DBG("[call:%s] Switching to re-invite ICE session [%p]",
                 getCallId().c_str(),
                 reinvIceMedia_.get());
        std::swap(reinvIceMedia_, iceMedia_);
    }
 
    resetTransport(std::move(reinvIceMedia_));
}
 
void
SIPCall::setupIceResponse(bool isReinvite)
{
    JAMI_DBG("[call:%s] Setup ICE response", getCallId().c_str());
 
    auto account = getSIPAccount();
    if (not account) {
        JAMI_ERR("No account detected");
    }
 
    auto opt = account->getIceOptions();
 
    // Attempt to use the discovered public address. If not available,
    // fallback on local address.
    opt.accountPublicAddr = account->getPublishedIpAddress();
    if (opt.accountPublicAddr) {
        opt.accountLocalAddr = dhtnet::ip_utils::getInterfaceAddr(account->getLocalInterface(),
                                                          opt.accountPublicAddr.getFamily());
    } else {
        // Just set the local address for both, most likely the account is not
        // registered.
        opt.accountLocalAddr = dhtnet::ip_utils::getInterfaceAddr(account->getLocalInterface(), AF_INET);
        opt.accountPublicAddr = opt.accountLocalAddr;
    }
 
    if (not opt.accountLocalAddr) {
        JAMI_ERR("[call:%s] No local address, unable to initialize ICE", getCallId().c_str());
        onFailure(EIO);
        return;
    }
 
    if (not createIceMediaTransport(isReinvite) or not initIceMediaTransport(false, opt)) {
        JAMI_ERR("[call:%s] ICE initialization failed", getCallId().c_str());
        // Fatal condition
        // TODO: what's SIP rfc says about that?
        // (same question in startIceMedia)
        onFailure(EIO);
        return;
    }
 
    // Media transport changed, must restart the media.
    mediaRestartRequired_ = true;
 
    // WARNING: This call blocks! (need ICE init done)
    addLocalIceAttributes();
}
 
bool
SIPCall::isIceRunning() const
{
    std::lock_guard lk(transportMtx_);
    return iceMedia_ and iceMedia_->isRunning();
}
 
std::unique_ptr<dhtnet::IceSocket>
SIPCall::newIceSocket(unsigned compId)
{
    return std::unique_ptr<dhtnet::IceSocket> {new dhtnet::IceSocket(getIceMedia(), compId)};
}
 
void
SIPCall::rtpSetupSuccess()
{
    std::lock_guard lk {setupSuccessMutex_};
 
    readyToRecord_ = true; // We're ready to record whenever a stream is ready
 
    auto previousState = isAudioOnly_;
    auto newState = !hasVideo();
 
    if (previousState != newState && Call::isRecording()) {
        deinitRecorder();
        toggleRecording();
        pendingRecord_ = true;
    }
    isAudioOnly_ = newState;
 
    if (pendingRecord_ && readyToRecord_)
        toggleRecording();
}
 
void
SIPCall::peerRecording(bool state)
{
    auto conference = conf_.lock();
    const std::string& id = conference ? conference->getConfId() : getCallId();
    if (state) {
        JAMI_WARN("[call:%s] Peer is recording", getCallId().c_str());
        emitSignal<libjami::CallSignal::RemoteRecordingChanged>(id, getPeerNumber(), true);
    } else {
        JAMI_WARN("Peer stopped recording");
        emitSignal<libjami::CallSignal::RemoteRecordingChanged>(id, getPeerNumber(), false);
    }
    peerRecording_ = state;
    if (auto conf = conf_.lock())
        conf->updateRecording();
}
 
void
SIPCall::peerMuted(bool muted, int streamIdx)
{
    if (muted) {
        JAMI_WARN("Peer muted");
    } else {
        JAMI_WARN("Peer unmuted");
    }
 
    if (streamIdx == -1) {
        for (const auto& audioRtp : getRtpSessionList(MediaType::MEDIA_AUDIO))
            audioRtp->setMuted(muted, RtpSession::Direction::RECV);
    } else if (streamIdx > -1 && streamIdx < static_cast<int>(rtpStreams_.size())) {
        auto& stream = rtpStreams_[streamIdx];
        if (stream.rtpSession_ && stream.rtpSession_->getMediaType() == MediaType::MEDIA_AUDIO)
            stream.rtpSession_->setMuted(muted, RtpSession::Direction::RECV);
    }
 
    peerMuted_ = muted;
    if (auto conf = conf_.lock())
        conf->updateMuted();
}
 
void
SIPCall::peerVoice(bool voice)
{
    peerVoice_ = voice;
 
    if (auto conference = conf_.lock()) {
        conference->updateVoiceActivity();
    } else {
        // one-to-one call
        // maybe emit signal with partner voice activity
    }
}
 
} // namespace jami