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Common.c
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Common.c
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#define LOG_CLASS "WebRtcSamples"
#include "Samples.h"
PSampleConfiguration gSampleConfiguration = NULL;
VOID sigintHandler(INT32 sigNum)
{
UNUSED_PARAM(sigNum);
if (gSampleConfiguration != NULL) {
ATOMIC_STORE_BOOL(&gSampleConfiguration->interrupted, TRUE);
CVAR_BROADCAST(gSampleConfiguration->cvar);
}
}
UINT32 setLogLevel()
{
PCHAR pLogLevel;
UINT32 logLevel = LOG_LEVEL_DEBUG;
if (NULL == (pLogLevel = GETENV(DEBUG_LOG_LEVEL_ENV_VAR)) || STATUS_SUCCESS != STRTOUI32(pLogLevel, NULL, 10, &logLevel) ||
logLevel < LOG_LEVEL_VERBOSE || logLevel > LOG_LEVEL_SILENT) {
logLevel = LOG_LEVEL_WARN;
}
SET_LOGGER_LOG_LEVEL(logLevel);
return logLevel;
}
STATUS signalingCallFailed(STATUS status)
{
return (STATUS_SIGNALING_GET_TOKEN_CALL_FAILED == status || STATUS_SIGNALING_DESCRIBE_CALL_FAILED == status ||
STATUS_SIGNALING_CREATE_CALL_FAILED == status || STATUS_SIGNALING_GET_ENDPOINT_CALL_FAILED == status ||
STATUS_SIGNALING_GET_ICE_CONFIG_CALL_FAILED == status || STATUS_SIGNALING_CONNECT_CALL_FAILED == status ||
STATUS_SIGNALING_DESCRIBE_MEDIA_CALL_FAILED == status);
}
VOID onConnectionStateChange(UINT64 customData, RTC_PEER_CONNECTION_STATE newState)
{
STATUS retStatus = STATUS_SUCCESS;
PSampleStreamingSession pSampleStreamingSession = (PSampleStreamingSession) customData;
CHK(pSampleStreamingSession != NULL && pSampleStreamingSession->pSampleConfiguration != NULL, STATUS_INTERNAL_ERROR);
PSampleConfiguration pSampleConfiguration = pSampleStreamingSession->pSampleConfiguration;
DLOGI("New connection state %u", newState);
switch (newState) {
case RTC_PEER_CONNECTION_STATE_CONNECTED:
ATOMIC_STORE_BOOL(&pSampleConfiguration->connected, TRUE);
CVAR_BROADCAST(pSampleConfiguration->cvar);
pSampleStreamingSession->peerConnectionMetrics.peerConnectionStats.peerConnectionConnectedTime =
GETTIME() / HUNDREDS_OF_NANOS_IN_A_MILLISECOND;
CHK_STATUS(peerConnectionGetMetrics(pSampleStreamingSession->pPeerConnection, &pSampleStreamingSession->peerConnectionMetrics));
CHK_STATUS(iceAgentGetMetrics(pSampleStreamingSession->pPeerConnection, &pSampleStreamingSession->iceMetrics));
if (STATUS_FAILED(retStatus = logSelectedIceCandidatesInformation(pSampleStreamingSession))) {
DLOGW("Failed to get information about selected Ice candidates: 0x%08x", retStatus);
}
break;
case RTC_PEER_CONNECTION_STATE_FAILED:
// explicit fallthrough
case RTC_PEER_CONNECTION_STATE_CLOSED:
// explicit fallthrough
case RTC_PEER_CONNECTION_STATE_DISCONNECTED:
DLOGD("p2p connection disconnected");
ATOMIC_STORE_BOOL(&pSampleStreamingSession->terminateFlag, TRUE);
CVAR_BROADCAST(pSampleConfiguration->cvar);
// explicit fallthrough
default:
ATOMIC_STORE_BOOL(&pSampleConfiguration->connected, FALSE);
CVAR_BROADCAST(pSampleConfiguration->cvar);
break;
}
CleanUp:
CHK_LOG_ERR(retStatus);
}
STATUS signalingClientStateChanged(UINT64 customData, SIGNALING_CLIENT_STATE state)
{
UNUSED_PARAM(customData);
STATUS retStatus = STATUS_SUCCESS;
PCHAR pStateStr;
signalingClientGetStateString(state, &pStateStr);
DLOGV("Signaling client state changed to %d - '%s'", state, pStateStr);
// Return success to continue
return retStatus;
}
STATUS signalingClientError(UINT64 customData, STATUS status, PCHAR msg, UINT32 msgLen)
{
PSampleConfiguration pSampleConfiguration = (PSampleConfiguration) customData;
DLOGW("Signaling client generated an error 0x%08x - '%.*s'", status, msgLen, msg);
// We will force re-create the signaling client on the following errors
if (status == STATUS_SIGNALING_ICE_CONFIG_REFRESH_FAILED || status == STATUS_SIGNALING_RECONNECT_FAILED) {
ATOMIC_STORE_BOOL(&pSampleConfiguration->recreateSignalingClient, TRUE);
CVAR_BROADCAST(pSampleConfiguration->cvar);
}
return STATUS_SUCCESS;
}
STATUS logSelectedIceCandidatesInformation(PSampleStreamingSession pSampleStreamingSession)
{
ENTERS();
STATUS retStatus = STATUS_SUCCESS;
RtcStats rtcMetrics;
CHK(pSampleStreamingSession != NULL, STATUS_NULL_ARG);
rtcMetrics.requestedTypeOfStats = RTC_STATS_TYPE_LOCAL_CANDIDATE;
CHK_STATUS(rtcPeerConnectionGetMetrics(pSampleStreamingSession->pPeerConnection, NULL, &rtcMetrics));
DLOGD("Local Candidate IP Address: %s", rtcMetrics.rtcStatsObject.localIceCandidateStats.address);
DLOGD("Local Candidate type: %s", rtcMetrics.rtcStatsObject.localIceCandidateStats.candidateType);
DLOGD("Local Candidate port: %d", rtcMetrics.rtcStatsObject.localIceCandidateStats.port);
DLOGD("Local Candidate priority: %d", rtcMetrics.rtcStatsObject.localIceCandidateStats.priority);
DLOGD("Local Candidate transport protocol: %s", rtcMetrics.rtcStatsObject.localIceCandidateStats.protocol);
DLOGD("Local Candidate relay protocol: %s", rtcMetrics.rtcStatsObject.localIceCandidateStats.relayProtocol);
DLOGD("Local Candidate Ice server source: %s", rtcMetrics.rtcStatsObject.localIceCandidateStats.url);
rtcMetrics.requestedTypeOfStats = RTC_STATS_TYPE_REMOTE_CANDIDATE;
CHK_STATUS(rtcPeerConnectionGetMetrics(pSampleStreamingSession->pPeerConnection, NULL, &rtcMetrics));
DLOGD("Remote Candidate IP Address: %s", rtcMetrics.rtcStatsObject.remoteIceCandidateStats.address);
DLOGD("Remote Candidate type: %s", rtcMetrics.rtcStatsObject.remoteIceCandidateStats.candidateType);
DLOGD("Remote Candidate port: %d", rtcMetrics.rtcStatsObject.remoteIceCandidateStats.port);
DLOGD("Remote Candidate priority: %d", rtcMetrics.rtcStatsObject.remoteIceCandidateStats.priority);
DLOGD("Remote Candidate transport protocol: %s", rtcMetrics.rtcStatsObject.remoteIceCandidateStats.protocol);
CleanUp:
LEAVES();
return retStatus;
}
STATUS handleAnswer(PSampleConfiguration pSampleConfiguration, PSampleStreamingSession pSampleStreamingSession, PSignalingMessage pSignalingMessage)
{
UNUSED_PARAM(pSampleConfiguration);
STATUS retStatus = STATUS_SUCCESS;
RtcSessionDescriptionInit answerSessionDescriptionInit;
MEMSET(&answerSessionDescriptionInit, 0x00, SIZEOF(RtcSessionDescriptionInit));
CHK_STATUS(deserializeSessionDescriptionInit(pSignalingMessage->payload, pSignalingMessage->payloadLen, &answerSessionDescriptionInit));
CHK_STATUS(setRemoteDescription(pSampleStreamingSession->pPeerConnection, &answerSessionDescriptionInit));
// The audio video receive routine should be per streaming session
if (pSampleConfiguration->receiveAudioVideoSource != NULL) {
THREAD_CREATE(&pSampleStreamingSession->receiveAudioVideoSenderTid, pSampleConfiguration->receiveAudioVideoSource,
(PVOID) pSampleStreamingSession);
}
CleanUp:
CHK_LOG_ERR(retStatus);
return retStatus;
}
PVOID mediaSenderRoutine(PVOID customData)
{
STATUS retStatus = STATUS_SUCCESS;
PSampleConfiguration pSampleConfiguration = (PSampleConfiguration) customData;
CHK(pSampleConfiguration != NULL, STATUS_NULL_ARG);
pSampleConfiguration->videoSenderTid = INVALID_TID_VALUE;
pSampleConfiguration->audioSenderTid = INVALID_TID_VALUE;
MUTEX_LOCK(pSampleConfiguration->sampleConfigurationObjLock);
while (!ATOMIC_LOAD_BOOL(&pSampleConfiguration->connected) && !ATOMIC_LOAD_BOOL(&pSampleConfiguration->appTerminateFlag)) {
CVAR_WAIT(pSampleConfiguration->cvar, pSampleConfiguration->sampleConfigurationObjLock, 5 * HUNDREDS_OF_NANOS_IN_A_SECOND);
}
MUTEX_UNLOCK(pSampleConfiguration->sampleConfigurationObjLock);
CHK(!ATOMIC_LOAD_BOOL(&pSampleConfiguration->appTerminateFlag), retStatus);
if (pSampleConfiguration->videoSource != NULL) {
THREAD_CREATE(&pSampleConfiguration->videoSenderTid, pSampleConfiguration->videoSource, (PVOID) pSampleConfiguration);
}
if (pSampleConfiguration->audioSource != NULL) {
THREAD_CREATE(&pSampleConfiguration->audioSenderTid, pSampleConfiguration->audioSource, (PVOID) pSampleConfiguration);
}
if (pSampleConfiguration->videoSenderTid != INVALID_TID_VALUE) {
THREAD_JOIN(pSampleConfiguration->videoSenderTid, NULL);
}
if (pSampleConfiguration->audioSenderTid != INVALID_TID_VALUE) {
THREAD_JOIN(pSampleConfiguration->audioSenderTid, NULL);
}
CleanUp:
// clean the flag of the media thread.
ATOMIC_STORE_BOOL(&pSampleConfiguration->mediaThreadStarted, FALSE);
CHK_LOG_ERR(retStatus);
return NULL;
}
STATUS handleOffer(PSampleConfiguration pSampleConfiguration, PSampleStreamingSession pSampleStreamingSession, PSignalingMessage pSignalingMessage)
{
STATUS retStatus = STATUS_SUCCESS;
RtcSessionDescriptionInit offerSessionDescriptionInit;
NullableBool canTrickle;
BOOL mediaThreadStarted;
CHK(pSampleConfiguration != NULL && pSignalingMessage != NULL, STATUS_NULL_ARG);
MEMSET(&offerSessionDescriptionInit, 0x00, SIZEOF(RtcSessionDescriptionInit));
MEMSET(&pSampleStreamingSession->answerSessionDescriptionInit, 0x00, SIZEOF(RtcSessionDescriptionInit));
DLOGD("**offer:%s", pSignalingMessage->payload);
CHK_STATUS(deserializeSessionDescriptionInit(pSignalingMessage->payload, pSignalingMessage->payloadLen, &offerSessionDescriptionInit));
CHK_STATUS(setRemoteDescription(pSampleStreamingSession->pPeerConnection, &offerSessionDescriptionInit));
canTrickle = canTrickleIceCandidates(pSampleStreamingSession->pPeerConnection);
/* cannot be null after setRemoteDescription */
CHECK(!NULLABLE_CHECK_EMPTY(canTrickle));
pSampleStreamingSession->remoteCanTrickleIce = canTrickle.value;
CHK_STATUS(setLocalDescription(pSampleStreamingSession->pPeerConnection, &pSampleStreamingSession->answerSessionDescriptionInit));
/*
* If remote support trickle ice, send answer now. Otherwise answer will be sent once ice candidate gathering is complete.
*/
if (pSampleStreamingSession->remoteCanTrickleIce) {
CHK_STATUS(createAnswer(pSampleStreamingSession->pPeerConnection, &pSampleStreamingSession->answerSessionDescriptionInit));
CHK_STATUS(respondWithAnswer(pSampleStreamingSession));
}
mediaThreadStarted = ATOMIC_EXCHANGE_BOOL(&pSampleConfiguration->mediaThreadStarted, TRUE);
if (!mediaThreadStarted) {
THREAD_CREATE(&pSampleConfiguration->mediaSenderTid, mediaSenderRoutine, (PVOID) pSampleConfiguration);
}
// The audio video receive routine should be per streaming session
if (pSampleConfiguration->receiveAudioVideoSource != NULL) {
THREAD_CREATE(&pSampleStreamingSession->receiveAudioVideoSenderTid, pSampleConfiguration->receiveAudioVideoSource,
(PVOID) pSampleStreamingSession);
}
CleanUp:
CHK_LOG_ERR(retStatus);
return retStatus;
}
STATUS sendSignalingMessage(PSampleStreamingSession pSampleStreamingSession, PSignalingMessage pMessage)
{
STATUS retStatus = STATUS_SUCCESS;
BOOL locked = FALSE;
PSampleConfiguration pSampleConfiguration;
// Validate the input params
CHK(pSampleStreamingSession != NULL && pSampleStreamingSession->pSampleConfiguration != NULL && pMessage != NULL, STATUS_NULL_ARG);
pSampleConfiguration = pSampleStreamingSession->pSampleConfiguration;
CHK(IS_VALID_MUTEX_VALUE(pSampleConfiguration->signalingSendMessageLock) &&
IS_VALID_SIGNALING_CLIENT_HANDLE(pSampleConfiguration->signalingClientHandle),
STATUS_INVALID_OPERATION);
MUTEX_LOCK(pSampleConfiguration->signalingSendMessageLock);
locked = TRUE;
CHK_STATUS(signalingClientSendMessageSync(pSampleConfiguration->signalingClientHandle, pMessage));
if (pMessage->messageType == SIGNALING_MESSAGE_TYPE_ANSWER) {
CHK_STATUS(signalingClientGetMetrics(pSampleConfiguration->signalingClientHandle, &pSampleConfiguration->signalingClientMetrics));
DLOGP("[Signaling offer received to answer sent time] %" PRIu64 " ms",
pSampleConfiguration->signalingClientMetrics.signalingClientStats.offerToAnswerTime);
}
CleanUp:
if (locked) {
MUTEX_UNLOCK(pSampleStreamingSession->pSampleConfiguration->signalingSendMessageLock);
}
CHK_LOG_ERR(retStatus);
return retStatus;
}
STATUS respondWithAnswer(PSampleStreamingSession pSampleStreamingSession)
{
STATUS retStatus = STATUS_SUCCESS;
SignalingMessage message;
UINT32 buffLen = MAX_SIGNALING_MESSAGE_LEN;
CHK_STATUS(serializeSessionDescriptionInit(&pSampleStreamingSession->answerSessionDescriptionInit, message.payload, &buffLen));
message.version = SIGNALING_MESSAGE_CURRENT_VERSION;
message.messageType = SIGNALING_MESSAGE_TYPE_ANSWER;
STRNCPY(message.peerClientId, pSampleStreamingSession->peerId, MAX_SIGNALING_CLIENT_ID_LEN);
message.payloadLen = (UINT32) STRLEN(message.payload);
// SNPRINTF appends null terminator, so we do not manually add it
SNPRINTF(message.correlationId, MAX_CORRELATION_ID_LEN, "%llu_%llu", GETTIME(), ATOMIC_INCREMENT(&pSampleStreamingSession->correlationIdPostFix));
DLOGD("Responding With Answer With correlationId: %s", message.correlationId);
CHK_STATUS(sendSignalingMessage(pSampleStreamingSession, &message));
CleanUp:
CHK_LOG_ERR(retStatus);
return retStatus;
}
BOOL sampleFilterNetworkInterfaces(UINT64 customData, PCHAR networkInt)
{
UNUSED_PARAM(customData);
BOOL useInterface = FALSE;
if (STRNCMP(networkInt, (PCHAR) "eth0", ARRAY_SIZE("eth0")) == 0) {
useInterface = TRUE;
}
DLOGD("%s %s", networkInt, (useInterface) ? ("allowed. Candidates to be gathered") : ("blocked. Candidates will not be gathered"));
return useInterface;
}
VOID onIceCandidateHandler(UINT64 customData, PCHAR candidateJson)
{
STATUS retStatus = STATUS_SUCCESS;
PSampleStreamingSession pSampleStreamingSession = (PSampleStreamingSession) customData;
SignalingMessage message;
CHK(pSampleStreamingSession != NULL, STATUS_NULL_ARG);
if (candidateJson == NULL) {
DLOGD("ice candidate gathering finished");
ATOMIC_STORE_BOOL(&pSampleStreamingSession->candidateGatheringDone, TRUE);
// if application is master and non-trickle ice, send answer now.
if (pSampleStreamingSession->pSampleConfiguration->channelInfo.channelRoleType == SIGNALING_CHANNEL_ROLE_TYPE_MASTER &&
!pSampleStreamingSession->remoteCanTrickleIce) {
CHK_STATUS(createAnswer(pSampleStreamingSession->pPeerConnection, &pSampleStreamingSession->answerSessionDescriptionInit));
CHK_STATUS(respondWithAnswer(pSampleStreamingSession));
} else if (pSampleStreamingSession->pSampleConfiguration->channelInfo.channelRoleType == SIGNALING_CHANNEL_ROLE_TYPE_VIEWER &&
!pSampleStreamingSession->pSampleConfiguration->trickleIce) {
CVAR_BROADCAST(pSampleStreamingSession->pSampleConfiguration->cvar);
}
} else if (pSampleStreamingSession->remoteCanTrickleIce && ATOMIC_LOAD_BOOL(&pSampleStreamingSession->peerIdReceived)) {
message.version = SIGNALING_MESSAGE_CURRENT_VERSION;
message.messageType = SIGNALING_MESSAGE_TYPE_ICE_CANDIDATE;
STRNCPY(message.peerClientId, pSampleStreamingSession->peerId, MAX_SIGNALING_CLIENT_ID_LEN);
message.payloadLen = (UINT32) STRNLEN(candidateJson, MAX_SIGNALING_MESSAGE_LEN);
STRNCPY(message.payload, candidateJson, message.payloadLen);
message.correlationId[0] = '\0';
CHK_STATUS(sendSignalingMessage(pSampleStreamingSession, &message));
}
CleanUp:
CHK_LOG_ERR(retStatus);
}
STATUS initializePeerConnection(PSampleConfiguration pSampleConfiguration, PRtcPeerConnection* ppRtcPeerConnection)
{
ENTERS();
STATUS retStatus = STATUS_SUCCESS;
RtcConfiguration configuration;
UINT32 i, j, iceConfigCount, uriCount = 0, maxTurnServer = 1;
PIceConfigInfo pIceConfigInfo;
UINT64 data;
PRtcCertificate pRtcCertificate = NULL;
CHK(pSampleConfiguration != NULL && ppRtcPeerConnection != NULL, STATUS_NULL_ARG);
MEMSET(&configuration, 0x00, SIZEOF(RtcConfiguration));
// Set this to custom callback to enable filtering of interfaces
configuration.kvsRtcConfiguration.iceSetInterfaceFilterFunc = NULL;
// Set the ICE mode explicitly
configuration.iceTransportPolicy = ICE_TRANSPORT_POLICY_ALL;
// Set the STUN server
PCHAR pKinesisVideoStunUrlPostFix = KINESIS_VIDEO_STUN_URL_POSTFIX;
// If region is in CN, add CN region uri postfix
if (STRSTR(pSampleConfiguration->channelInfo.pRegion, "cn-")) {
pKinesisVideoStunUrlPostFix = KINESIS_VIDEO_STUN_URL_POSTFIX_CN;
}
SNPRINTF(configuration.iceServers[0].urls, MAX_ICE_CONFIG_URI_LEN, KINESIS_VIDEO_STUN_URL, pSampleConfiguration->channelInfo.pRegion,
pKinesisVideoStunUrlPostFix);
if (pSampleConfiguration->useTurn) {
// Set the URIs from the configuration
CHK_STATUS(signalingClientGetIceConfigInfoCount(pSampleConfiguration->signalingClientHandle, &iceConfigCount));
/* signalingClientGetIceConfigInfoCount can return more than one turn server. Use only one to optimize
* candidate gathering latency. But user can also choose to use more than 1 turn server. */
for (uriCount = 0, i = 0; i < maxTurnServer; i++) {
CHK_STATUS(signalingClientGetIceConfigInfo(pSampleConfiguration->signalingClientHandle, i, &pIceConfigInfo));
for (j = 0; j < pIceConfigInfo->uriCount; j++) {
CHECK(uriCount < MAX_ICE_SERVERS_COUNT);
/*
* if configuration.iceServers[uriCount + 1].urls is "turn:ip:port?transport=udp" then ICE will try TURN over UDP
* if configuration.iceServers[uriCount + 1].urls is "turn:ip:port?transport=tcp" then ICE will try TURN over TCP/TLS
* if configuration.iceServers[uriCount + 1].urls is "turns:ip:port?transport=udp", it's currently ignored because sdk dont do TURN
* over DTLS yet. if configuration.iceServers[uriCount + 1].urls is "turns:ip:port?transport=tcp" then ICE will try TURN over TCP/TLS
* if configuration.iceServers[uriCount + 1].urls is "turn:ip:port" then ICE will try both TURN over UDP and TCP/TLS
*
* It's recommended to not pass too many TURN iceServers to configuration because it will slow down ice gathering in non-trickle mode.
*/
STRNCPY(configuration.iceServers[uriCount + 1].urls, pIceConfigInfo->uris[j], MAX_ICE_CONFIG_URI_LEN);
STRNCPY(configuration.iceServers[uriCount + 1].credential, pIceConfigInfo->password, MAX_ICE_CONFIG_CREDENTIAL_LEN);
STRNCPY(configuration.iceServers[uriCount + 1].username, pIceConfigInfo->userName, MAX_ICE_CONFIG_USER_NAME_LEN);
uriCount++;
}
}
}
pSampleConfiguration->iceUriCount = uriCount + 1;
// Check if we have any pregenerated certs and use them
// NOTE: We are running under the config lock
retStatus = stackQueueDequeue(pSampleConfiguration->pregeneratedCertificates, &data);
CHK(retStatus == STATUS_SUCCESS || retStatus == STATUS_NOT_FOUND, retStatus);
if (retStatus == STATUS_NOT_FOUND) {
retStatus = STATUS_SUCCESS;
} else {
// Use the pre-generated cert and get rid of it to not reuse again
pRtcCertificate = (PRtcCertificate) data;
configuration.certificates[0] = *pRtcCertificate;
}
CHK_STATUS(createPeerConnection(&configuration, ppRtcPeerConnection));
CleanUp:
CHK_LOG_ERR(retStatus);
// Free the certificate which can be NULL as we no longer need it and won't reuse
freeRtcCertificate(pRtcCertificate);
LEAVES();
return retStatus;
}
// Return ICE server stats for a specific streaming session
STATUS gatherIceServerStats(PSampleStreamingSession pSampleStreamingSession)
{
ENTERS();
STATUS retStatus = STATUS_SUCCESS;
RtcStats rtcmetrics;
UINT32 j = 0;
rtcmetrics.requestedTypeOfStats = RTC_STATS_TYPE_ICE_SERVER;
for (; j < pSampleStreamingSession->pSampleConfiguration->iceUriCount; j++) {
rtcmetrics.rtcStatsObject.iceServerStats.iceServerIndex = j;
CHK_STATUS(rtcPeerConnectionGetMetrics(pSampleStreamingSession->pPeerConnection, NULL, &rtcmetrics));
DLOGD("ICE Server URL: %s", rtcmetrics.rtcStatsObject.iceServerStats.url);
DLOGD("ICE Server port: %d", rtcmetrics.rtcStatsObject.iceServerStats.port);
DLOGD("ICE Server protocol: %s", rtcmetrics.rtcStatsObject.iceServerStats.protocol);
DLOGD("Total requests sent:%" PRIu64, rtcmetrics.rtcStatsObject.iceServerStats.totalRequestsSent);
DLOGD("Total responses received: %" PRIu64, rtcmetrics.rtcStatsObject.iceServerStats.totalResponsesReceived);
DLOGD("Total round trip time: %" PRIu64 "ms",
rtcmetrics.rtcStatsObject.iceServerStats.totalRoundTripTime / HUNDREDS_OF_NANOS_IN_A_MILLISECOND);
}
CleanUp:
LEAVES();
return retStatus;
}
STATUS createSampleStreamingSession(PSampleConfiguration pSampleConfiguration, PCHAR peerId, BOOL isMaster,
PSampleStreamingSession* ppSampleStreamingSession)
{
STATUS retStatus = STATUS_SUCCESS;
RtcMediaStreamTrack videoTrack, audioTrack;
PSampleStreamingSession pSampleStreamingSession = NULL;
RtcRtpTransceiverInit audioRtpTransceiverInit;
RtcRtpTransceiverInit videoRtpTransceiverInit;
MEMSET(&videoTrack, 0x00, SIZEOF(RtcMediaStreamTrack));
MEMSET(&audioTrack, 0x00, SIZEOF(RtcMediaStreamTrack));
CHK(pSampleConfiguration != NULL && ppSampleStreamingSession != NULL, STATUS_NULL_ARG);
CHK((isMaster && peerId != NULL) || !isMaster, STATUS_INVALID_ARG);
pSampleStreamingSession = (PSampleStreamingSession) MEMCALLOC(1, SIZEOF(SampleStreamingSession));
pSampleStreamingSession->firstFrame = TRUE;
pSampleStreamingSession->offerReceiveTime = GETTIME();
CHK(pSampleStreamingSession != NULL, STATUS_NOT_ENOUGH_MEMORY);
if (isMaster) {
STRCPY(pSampleStreamingSession->peerId, peerId);
} else {
STRCPY(pSampleStreamingSession->peerId, SAMPLE_VIEWER_CLIENT_ID);
}
ATOMIC_STORE_BOOL(&pSampleStreamingSession->peerIdReceived, TRUE);
pSampleStreamingSession->pAudioRtcRtpTransceiver = NULL;
pSampleStreamingSession->pVideoRtcRtpTransceiver = NULL;
pSampleStreamingSession->pSampleConfiguration = pSampleConfiguration;
pSampleStreamingSession->rtcMetricsHistory.prevTs = GETTIME();
pSampleStreamingSession->peerConnectionMetrics.version = PEER_CONNECTION_METRICS_CURRENT_VERSION;
pSampleStreamingSession->iceMetrics.version = ICE_AGENT_METRICS_CURRENT_VERSION;
// if we're the viewer, we control the trickle ice mode
pSampleStreamingSession->remoteCanTrickleIce = !isMaster && pSampleConfiguration->trickleIce;
ATOMIC_STORE_BOOL(&pSampleStreamingSession->terminateFlag, FALSE);
ATOMIC_STORE_BOOL(&pSampleStreamingSession->candidateGatheringDone, FALSE);
pSampleStreamingSession->peerConnectionMetrics.peerConnectionStats.peerConnectionStartTime = GETTIME() / HUNDREDS_OF_NANOS_IN_A_MILLISECOND;
if (pSampleConfiguration->enableTwcc) {
pSampleStreamingSession->twccMetadata.updateLock = MUTEX_CREATE(TRUE);
}
CHK_STATUS(initializePeerConnection(pSampleConfiguration, &pSampleStreamingSession->pPeerConnection));
CHK_STATUS(peerConnectionOnIceCandidate(pSampleStreamingSession->pPeerConnection, (UINT64) pSampleStreamingSession, onIceCandidateHandler));
CHK_STATUS(
peerConnectionOnConnectionStateChange(pSampleStreamingSession->pPeerConnection, (UINT64) pSampleStreamingSession, onConnectionStateChange));
#ifdef ENABLE_DATA_CHANNEL
if (pSampleConfiguration->onDataChannel != NULL) {
CHK_STATUS(peerConnectionOnDataChannel(pSampleStreamingSession->pPeerConnection, (UINT64) pSampleStreamingSession,
pSampleConfiguration->onDataChannel));
}
#endif
CHK_STATUS(addSupportedCodec(pSampleStreamingSession->pPeerConnection, pSampleConfiguration->videoCodec));
CHK_STATUS(addSupportedCodec(pSampleStreamingSession->pPeerConnection, pSampleConfiguration->audioCodec));
// Add a SendRecv Transceiver of type video
videoTrack.kind = MEDIA_STREAM_TRACK_KIND_VIDEO;
videoTrack.codec = pSampleConfiguration->videoCodec;
videoRtpTransceiverInit.direction = RTC_RTP_TRANSCEIVER_DIRECTION_SENDRECV;
STRCPY(videoTrack.streamId, "myKvsVideoStream");
STRCPY(videoTrack.trackId, "myVideoTrack");
CHK_STATUS(addTransceiver(pSampleStreamingSession->pPeerConnection, &videoTrack, &videoRtpTransceiverInit,
&pSampleStreamingSession->pVideoRtcRtpTransceiver));
CHK_STATUS(transceiverOnBandwidthEstimation(pSampleStreamingSession->pVideoRtcRtpTransceiver, (UINT64) pSampleStreamingSession,
sampleBandwidthEstimationHandler));
// Add a SendRecv Transceiver of type audio
audioTrack.kind = MEDIA_STREAM_TRACK_KIND_AUDIO;
audioTrack.codec = pSampleConfiguration->audioCodec;
audioRtpTransceiverInit.direction = RTC_RTP_TRANSCEIVER_DIRECTION_SENDRECV;
STRCPY(audioTrack.streamId, "myKvsVideoStream");
STRCPY(audioTrack.trackId, "myAudioTrack");
CHK_STATUS(addTransceiver(pSampleStreamingSession->pPeerConnection, &audioTrack, &audioRtpTransceiverInit,
&pSampleStreamingSession->pAudioRtcRtpTransceiver));
CHK_STATUS(transceiverOnBandwidthEstimation(pSampleStreamingSession->pAudioRtcRtpTransceiver, (UINT64) pSampleStreamingSession,
sampleBandwidthEstimationHandler));
// twcc bandwidth estimation
if (pSampleConfiguration->enableTwcc) {
CHK_STATUS(peerConnectionOnSenderBandwidthEstimation(pSampleStreamingSession->pPeerConnection, (UINT64) pSampleStreamingSession,
sampleSenderBandwidthEstimationHandler));
}
pSampleStreamingSession->startUpLatency = 0;
CleanUp:
if (STATUS_FAILED(retStatus) && pSampleStreamingSession != NULL) {
freeSampleStreamingSession(&pSampleStreamingSession);
pSampleStreamingSession = NULL;
}
if (ppSampleStreamingSession != NULL) {
*ppSampleStreamingSession = pSampleStreamingSession;
}
return retStatus;
}
STATUS freeSampleStreamingSession(PSampleStreamingSession* ppSampleStreamingSession)
{
STATUS retStatus = STATUS_SUCCESS;
PSampleStreamingSession pSampleStreamingSession = NULL;
PSampleConfiguration pSampleConfiguration;
CHK(ppSampleStreamingSession != NULL, STATUS_NULL_ARG);
pSampleStreamingSession = *ppSampleStreamingSession;
CHK(pSampleStreamingSession != NULL && pSampleStreamingSession->pSampleConfiguration != NULL, retStatus);
pSampleConfiguration = pSampleStreamingSession->pSampleConfiguration;
DLOGD("Freeing streaming session with peer id: %s ", pSampleStreamingSession->peerId);
ATOMIC_STORE_BOOL(&pSampleStreamingSession->terminateFlag, TRUE);
if (pSampleStreamingSession->shutdownCallback != NULL) {
pSampleStreamingSession->shutdownCallback(pSampleStreamingSession->shutdownCallbackCustomData, pSampleStreamingSession);
}
if (IS_VALID_TID_VALUE(pSampleStreamingSession->receiveAudioVideoSenderTid)) {
THREAD_JOIN(pSampleStreamingSession->receiveAudioVideoSenderTid, NULL);
}
// De-initialize the session stats timer if there are no active sessions
// NOTE: we need to perform this under the lock which might be acquired by
// the running thread but it's OK as it's re-entrant
MUTEX_LOCK(pSampleConfiguration->sampleConfigurationObjLock);
if (pSampleConfiguration->iceCandidatePairStatsTimerId != MAX_UINT32 && pSampleConfiguration->streamingSessionCount == 0 &&
IS_VALID_TIMER_QUEUE_HANDLE(pSampleConfiguration->timerQueueHandle)) {
CHK_LOG_ERR(timerQueueCancelTimer(pSampleConfiguration->timerQueueHandle, pSampleConfiguration->iceCandidatePairStatsTimerId,
(UINT64) pSampleConfiguration));
pSampleConfiguration->iceCandidatePairStatsTimerId = MAX_UINT32;
}
MUTEX_UNLOCK(pSampleConfiguration->sampleConfigurationObjLock);
if (pSampleConfiguration->enableTwcc) {
if (IS_VALID_MUTEX_VALUE(pSampleStreamingSession->twccMetadata.updateLock)) {
MUTEX_FREE(pSampleStreamingSession->twccMetadata.updateLock);
}
}
CHK_LOG_ERR(closePeerConnection(pSampleStreamingSession->pPeerConnection));
CHK_LOG_ERR(freePeerConnection(&pSampleStreamingSession->pPeerConnection));
SAFE_MEMFREE(pSampleStreamingSession);
CleanUp:
CHK_LOG_ERR(retStatus);
return retStatus;
}
STATUS streamingSessionOnShutdown(PSampleStreamingSession pSampleStreamingSession, UINT64 customData,
StreamSessionShutdownCallback streamSessionShutdownCallback)
{
STATUS retStatus = STATUS_SUCCESS;
CHK(pSampleStreamingSession != NULL && streamSessionShutdownCallback != NULL, STATUS_NULL_ARG);
pSampleStreamingSession->shutdownCallbackCustomData = customData;
pSampleStreamingSession->shutdownCallback = streamSessionShutdownCallback;
CleanUp:
return retStatus;
}
VOID sampleVideoFrameHandler(UINT64 customData, PFrame pFrame)
{
UNUSED_PARAM(customData);
DLOGV("Video Frame received. TrackId: %" PRIu64 ", Size: %u, Flags %u", pFrame->trackId, pFrame->size, pFrame->flags);
}
VOID sampleAudioFrameHandler(UINT64 customData, PFrame pFrame)
{
UNUSED_PARAM(customData);
DLOGV("Audio Frame received. TrackId: %" PRIu64 ", Size: %u, Flags %u", pFrame->trackId, pFrame->size, pFrame->flags);
}
VOID sampleFrameHandler(UINT64 customData, PFrame pFrame)
{
UNUSED_PARAM(customData);
DLOGV("Video Frame received. TrackId: %" PRIu64 ", Size: %u, Flags %u", pFrame->trackId, pFrame->size, pFrame->flags);
}
VOID sampleBandwidthEstimationHandler(UINT64 customData, DOUBLE maximumBitrate)
{
UNUSED_PARAM(customData);
DLOGV("received bitrate suggestion: %f", maximumBitrate);
}
// Sample callback for TWCC. Average packet is calculated with exponential moving average (EMA). If average packet lost is <= 5%,
// the current bitrate is increased by 5%. If more than 5%, the current bitrate
// is reduced by percent lost. Bitrate update is allowed every second and is increased/decreased upto the limits
VOID sampleSenderBandwidthEstimationHandler(UINT64 customData, UINT32 txBytes, UINT32 rxBytes, UINT32 txPacketsCnt, UINT32 rxPacketsCnt,
UINT64 duration)
{
UNUSED_PARAM(duration);
UINT64 videoBitrate, audioBitrate;
UINT64 currentTimeMs, timeDiff;
UINT32 lostPacketsCnt = txPacketsCnt - rxPacketsCnt;
DOUBLE percentLost = (DOUBLE) ((txPacketsCnt > 0) ? (lostPacketsCnt * 100 / txPacketsCnt) : 0.0);
SampleStreamingSession* pSampleStreamingSession = (SampleStreamingSession*) customData;
if (pSampleStreamingSession == NULL) {
DLOGW("Invalid streaming session (NULL object)");
return;
}
// Calculate packet loss
pSampleStreamingSession->twccMetadata.averagePacketLoss =
EMA_ACCUMULATOR_GET_NEXT(pSampleStreamingSession->twccMetadata.averagePacketLoss, ((DOUBLE) percentLost));
currentTimeMs = GETTIME();
timeDiff = currentTimeMs - pSampleStreamingSession->twccMetadata.lastAdjustmentTimeMs;
if (timeDiff < TWCC_BITRATE_ADJUSTMENT_INTERVAL_MS) {
// Too soon for another adjustment
return;
}
MUTEX_LOCK(pSampleStreamingSession->twccMetadata.updateLock);
videoBitrate = pSampleStreamingSession->twccMetadata.currentVideoBitrate;
audioBitrate = pSampleStreamingSession->twccMetadata.currentAudioBitrate;
if (pSampleStreamingSession->twccMetadata.averagePacketLoss <= 5) {
// increase encoder bitrate by 5 percent with a cap at MAX_BITRATE
videoBitrate = (UINT64) MIN(videoBitrate * 1.05, MAX_VIDEO_BITRATE_KBPS);
// increase encoder bitrate by 5 percent with a cap at MAX_BITRATE
audioBitrate = (UINT64) MIN(audioBitrate * 1.05, MAX_AUDIO_BITRATE_BPS);
} else {
// decrease encoder bitrate by average packet loss percent, with a cap at MIN_BITRATE
videoBitrate = (UINT64) MAX(videoBitrate * (1.0 - pSampleStreamingSession->twccMetadata.averagePacketLoss / 100.0), MIN_VIDEO_BITRATE_KBPS);
// decrease encoder bitrate by average packet loss percent, with a cap at MIN_BITRATE
audioBitrate = (UINT64) MAX(audioBitrate * (1.0 - pSampleStreamingSession->twccMetadata.averagePacketLoss / 100.0), MIN_AUDIO_BITRATE_BPS);
}
// Update the session with the new bitrate and adjustment time
pSampleStreamingSession->twccMetadata.newVideoBitrate = videoBitrate;
pSampleStreamingSession->twccMetadata.newAudioBitrate = audioBitrate;
MUTEX_UNLOCK(pSampleStreamingSession->twccMetadata.updateLock);
pSampleStreamingSession->twccMetadata.lastAdjustmentTimeMs = currentTimeMs;
DLOGI("Adjustment made: average packet loss = %.2f%%, timediff: %llu ms", pSampleStreamingSession->twccMetadata.averagePacketLoss, timeDiff);
DLOGI("Suggested video bitrate %u kbps, suggested audio bitrate: %u bps, sent: %u bytes %u packets received: %u bytes %u packets in %lu msec",
videoBitrate, audioBitrate, txBytes, txPacketsCnt, rxBytes, rxPacketsCnt, duration / 10000ULL);
}
STATUS handleRemoteCandidate(PSampleStreamingSession pSampleStreamingSession, PSignalingMessage pSignalingMessage)
{
STATUS retStatus = STATUS_SUCCESS;
RtcIceCandidateInit iceCandidate;
CHK(pSampleStreamingSession != NULL && pSignalingMessage != NULL, STATUS_NULL_ARG);
CHK_STATUS(deserializeRtcIceCandidateInit(pSignalingMessage->payload, pSignalingMessage->payloadLen, &iceCandidate));
CHK_STATUS(addIceCandidate(pSampleStreamingSession->pPeerConnection, iceCandidate.candidate));
CleanUp:
CHK_LOG_ERR(retStatus);
return retStatus;
}
STATUS traverseDirectoryPEMFileScan(UINT64 customData, DIR_ENTRY_TYPES entryType, PCHAR fullPath, PCHAR fileName)
{
UNUSED_PARAM(entryType);
UNUSED_PARAM(fullPath);
PCHAR certName = (PCHAR) customData;
UINT32 fileNameLen = STRLEN(fileName);
if (fileNameLen > ARRAY_SIZE(CA_CERT_PEM_FILE_EXTENSION) + 1 &&
(STRCMPI(CA_CERT_PEM_FILE_EXTENSION, &fileName[fileNameLen - ARRAY_SIZE(CA_CERT_PEM_FILE_EXTENSION) + 1]) == 0)) {
certName[0] = FPATHSEPARATOR;
certName++;
STRCPY(certName, fileName);
}
return STATUS_SUCCESS;
}
STATUS lookForSslCert(PSampleConfiguration* ppSampleConfiguration)
{
STATUS retStatus = STATUS_SUCCESS;
struct stat pathStat;
CHAR certName[MAX_PATH_LEN];
PSampleConfiguration pSampleConfiguration = *ppSampleConfiguration;
MEMSET(certName, 0x0, ARRAY_SIZE(certName));
pSampleConfiguration->pCaCertPath = GETENV(CACERT_PATH_ENV_VAR);
// if ca cert path is not set from the environment, try to use the one that cmake detected
if (pSampleConfiguration->pCaCertPath == NULL) {
CHK_ERR(STRNLEN(DEFAULT_KVS_CACERT_PATH, MAX_PATH_LEN) > 0, STATUS_INVALID_OPERATION, "No ca cert path given (error:%s)", strerror(errno));
pSampleConfiguration->pCaCertPath = DEFAULT_KVS_CACERT_PATH;
} else {
// Check if the environment variable is a path
CHK(0 == FSTAT(pSampleConfiguration->pCaCertPath, &pathStat), STATUS_DIRECTORY_ENTRY_STAT_ERROR);
if (S_ISDIR(pathStat.st_mode)) {
CHK_STATUS(traverseDirectory(pSampleConfiguration->pCaCertPath, (UINT64) &certName, /* iterate */ FALSE, traverseDirectoryPEMFileScan));
if (certName[0] != 0x0) {
STRCAT(pSampleConfiguration->pCaCertPath, certName);
} else {
DLOGW("Cert not found in path set...checking if CMake detected a path\n");
CHK_ERR(STRNLEN(DEFAULT_KVS_CACERT_PATH, MAX_PATH_LEN) > 0, STATUS_INVALID_OPERATION, "No ca cert path given (error:%s)",
strerror(errno));
DLOGI("CMake detected cert path\n");
pSampleConfiguration->pCaCertPath = DEFAULT_KVS_CACERT_PATH;
}
}
}
CleanUp:
CHK_LOG_ERR(retStatus);
return retStatus;
}
STATUS createSampleConfiguration(PCHAR channelName, SIGNALING_CHANNEL_ROLE_TYPE roleType, BOOL trickleIce, BOOL useTurn, UINT32 logLevel,
PSampleConfiguration* ppSampleConfiguration)
{
STATUS retStatus = STATUS_SUCCESS;
PCHAR pAccessKey, pSecretKey, pSessionToken;
PSampleConfiguration pSampleConfiguration = NULL;
CHK(ppSampleConfiguration != NULL, STATUS_NULL_ARG);
CHK(NULL != (pSampleConfiguration = (PSampleConfiguration) MEMCALLOC(1, SIZEOF(SampleConfiguration))), STATUS_NOT_ENOUGH_MEMORY);
#ifdef IOT_CORE_ENABLE_CREDENTIALS
PCHAR pIotCoreCredentialEndPoint, pIotCoreCert, pIotCorePrivateKey, pIotCoreRoleAlias, pIotCoreCertificateId, pIotCoreThingName;
CHK_ERR((pIotCoreCredentialEndPoint = GETENV(IOT_CORE_CREDENTIAL_ENDPOINT)) != NULL, STATUS_INVALID_OPERATION,
"AWS_IOT_CORE_CREDENTIAL_ENDPOINT must be set");
CHK_ERR((pIotCoreCert = GETENV(IOT_CORE_CERT)) != NULL, STATUS_INVALID_OPERATION, "AWS_IOT_CORE_CERT must be set");
CHK_ERR((pIotCorePrivateKey = GETENV(IOT_CORE_PRIVATE_KEY)) != NULL, STATUS_INVALID_OPERATION, "AWS_IOT_CORE_PRIVATE_KEY must be set");
CHK_ERR((pIotCoreRoleAlias = GETENV(IOT_CORE_ROLE_ALIAS)) != NULL, STATUS_INVALID_OPERATION, "AWS_IOT_CORE_ROLE_ALIAS must be set");
CHK_ERR((pIotCoreThingName = GETENV(IOT_CORE_THING_NAME)) != NULL, STATUS_INVALID_OPERATION, "AWS_IOT_CORE_THING_NAME must be set");
#else
CHK_ERR((pAccessKey = GETENV(ACCESS_KEY_ENV_VAR)) != NULL, STATUS_INVALID_OPERATION, "AWS_ACCESS_KEY_ID must be set");
CHK_ERR((pSecretKey = GETENV(SECRET_KEY_ENV_VAR)) != NULL, STATUS_INVALID_OPERATION, "AWS_SECRET_ACCESS_KEY must be set");
#endif
pSessionToken = GETENV(SESSION_TOKEN_ENV_VAR);
if (pSessionToken != NULL && IS_EMPTY_STRING(pSessionToken)) {
DLOGW("Session token is set but its value is empty. Ignoring.");
pSessionToken = NULL;
}
// If the env is set, we generate normal log files apart from filtered profile log files
// If not set, we generate only the filtered profile log files
if (NULL != GETENV(ENABLE_FILE_LOGGING)) {
retStatus = createFileLoggerWithLevelFiltering(FILE_LOGGING_BUFFER_SIZE, MAX_NUMBER_OF_LOG_FILES, (PCHAR) FILE_LOGGER_LOG_FILE_DIRECTORY_PATH,
TRUE, TRUE, TRUE, LOG_LEVEL_PROFILE, NULL);
if (retStatus != STATUS_SUCCESS) {
DLOGW("[KVS Master] createFileLogger(): operation returned status code: 0x%08x", retStatus);
} else {
pSampleConfiguration->enableFileLogging = TRUE;
}
} else {
retStatus = createFileLoggerWithLevelFiltering(FILE_LOGGING_BUFFER_SIZE, MAX_NUMBER_OF_LOG_FILES, (PCHAR) FILE_LOGGER_LOG_FILE_DIRECTORY_PATH,
TRUE, TRUE, FALSE, LOG_LEVEL_PROFILE, NULL);
if (retStatus != STATUS_SUCCESS) {
DLOGW("[KVS Master] createFileLogger(): operation returned status code: 0x%08x", retStatus);
} else {
pSampleConfiguration->enableFileLogging = TRUE;
}
}
if ((pSampleConfiguration->channelInfo.pRegion = GETENV(DEFAULT_REGION_ENV_VAR)) == NULL) {
pSampleConfiguration->channelInfo.pRegion = DEFAULT_AWS_REGION;
}
CHK_STATUS(lookForSslCert(&pSampleConfiguration));
#ifdef IOT_CORE_ENABLE_CREDENTIALS
CHK_STATUS(createLwsIotCredentialProvider(pIotCoreCredentialEndPoint, pIotCoreCert, pIotCorePrivateKey, pSampleConfiguration->pCaCertPath,
pIotCoreRoleAlias, pIotCoreThingName, &pSampleConfiguration->pCredentialProvider));
#else
CHK_STATUS(
createStaticCredentialProvider(pAccessKey, 0, pSecretKey, 0, pSessionToken, 0, MAX_UINT64, &pSampleConfiguration->pCredentialProvider));
#endif
pSampleConfiguration->mediaSenderTid = INVALID_TID_VALUE;
pSampleConfiguration->audioSenderTid = INVALID_TID_VALUE;
pSampleConfiguration->videoSenderTid = INVALID_TID_VALUE;
pSampleConfiguration->signalingClientHandle = INVALID_SIGNALING_CLIENT_HANDLE_VALUE;
pSampleConfiguration->sampleConfigurationObjLock = MUTEX_CREATE(TRUE);
pSampleConfiguration->cvar = CVAR_CREATE();
pSampleConfiguration->streamingSessionListReadLock = MUTEX_CREATE(FALSE);
pSampleConfiguration->signalingSendMessageLock = MUTEX_CREATE(FALSE);
/* This is ignored for master. Master can extract the info from offer. Viewer has to know if peer can trickle or
* not ahead of time. */
pSampleConfiguration->trickleIce = trickleIce;
pSampleConfiguration->useTurn = useTurn;
pSampleConfiguration->enableSendingMetricsToViewerViaDc = FALSE;
pSampleConfiguration->receiveAudioVideoSource = NULL;
pSampleConfiguration->channelInfo.version = CHANNEL_INFO_CURRENT_VERSION;
pSampleConfiguration->channelInfo.pChannelName = channelName;
#ifdef IOT_CORE_ENABLE_CREDENTIALS
if ((pIotCoreCertificateId = GETENV(IOT_CORE_CERTIFICATE_ID)) != NULL) {
pSampleConfiguration->channelInfo.pChannelName = pIotCoreCertificateId;
}
#endif
pSampleConfiguration->channelInfo.pKmsKeyId = NULL;
pSampleConfiguration->channelInfo.tagCount = 0;
pSampleConfiguration->channelInfo.pTags = NULL;
pSampleConfiguration->channelInfo.channelType = SIGNALING_CHANNEL_TYPE_SINGLE_MASTER;
pSampleConfiguration->channelInfo.channelRoleType = roleType;
pSampleConfiguration->channelInfo.cachingPolicy = SIGNALING_API_CALL_CACHE_TYPE_FILE;
pSampleConfiguration->channelInfo.cachingPeriod = SIGNALING_API_CALL_CACHE_TTL_SENTINEL_VALUE;
pSampleConfiguration->channelInfo.asyncIceServerConfig = TRUE; // has no effect
pSampleConfiguration->channelInfo.retry = TRUE;
pSampleConfiguration->channelInfo.reconnect = TRUE;
pSampleConfiguration->channelInfo.pCertPath = pSampleConfiguration->pCaCertPath;
pSampleConfiguration->channelInfo.messageTtl = 0; // Default is 60 seconds
pSampleConfiguration->signalingClientCallbacks.version = SIGNALING_CLIENT_CALLBACKS_CURRENT_VERSION;
pSampleConfiguration->signalingClientCallbacks.errorReportFn = signalingClientError;
pSampleConfiguration->signalingClientCallbacks.stateChangeFn = signalingClientStateChanged;
pSampleConfiguration->signalingClientCallbacks.customData = (UINT64) pSampleConfiguration;
pSampleConfiguration->clientInfo.version = SIGNALING_CLIENT_INFO_CURRENT_VERSION;
pSampleConfiguration->clientInfo.loggingLevel = logLevel;
pSampleConfiguration->clientInfo.cacheFilePath = NULL; // Use the default path
pSampleConfiguration->clientInfo.signalingClientCreationMaxRetryAttempts = CREATE_SIGNALING_CLIENT_RETRY_ATTEMPTS_SENTINEL_VALUE;
pSampleConfiguration->iceCandidatePairStatsTimerId = MAX_UINT32;
pSampleConfiguration->pregenerateCertTimerId = MAX_UINT32;
pSampleConfiguration->signalingClientMetrics.version = SIGNALING_CLIENT_METRICS_CURRENT_VERSION;
// Flag to enable/disable TWCC
pSampleConfiguration->enableTwcc = TRUE;
ATOMIC_STORE_BOOL(&pSampleConfiguration->interrupted, FALSE);
ATOMIC_STORE_BOOL(&pSampleConfiguration->mediaThreadStarted, FALSE);
ATOMIC_STORE_BOOL(&pSampleConfiguration->appTerminateFlag, FALSE);
ATOMIC_STORE_BOOL(&pSampleConfiguration->recreateSignalingClient, FALSE);
ATOMIC_STORE_BOOL(&pSampleConfiguration->connected, FALSE);
CHK_STATUS(timerQueueCreate(&pSampleConfiguration->timerQueueHandle));
CHK_STATUS(stackQueueCreate(&pSampleConfiguration->pregeneratedCertificates));
// Start the cert pre-gen timer callback
if (SAMPLE_PRE_GENERATE_CERT) {
CHK_LOG_ERR(retStatus =
timerQueueAddTimer(pSampleConfiguration->timerQueueHandle, 0, SAMPLE_PRE_GENERATE_CERT_PERIOD, pregenerateCertTimerCallback,
(UINT64) pSampleConfiguration, &pSampleConfiguration->pregenerateCertTimerId));
}
pSampleConfiguration->iceUriCount = 0;
CHK_STATUS(stackQueueCreate(&pSampleConfiguration->pPendingSignalingMessageForRemoteClient));
CHK_STATUS(hashTableCreateWithParams(SAMPLE_HASH_TABLE_BUCKET_COUNT, SAMPLE_HASH_TABLE_BUCKET_LENGTH,
&pSampleConfiguration->pRtcPeerConnectionForRemoteClient));
CleanUp:
if (STATUS_FAILED(retStatus)) {
freeSampleConfiguration(&pSampleConfiguration);
}
if (ppSampleConfiguration != NULL) {
*ppSampleConfiguration = pSampleConfiguration;
}
return retStatus;
}
STATUS initSignaling(PSampleConfiguration pSampleConfiguration, PCHAR clientId)
{
STATUS retStatus = STATUS_SUCCESS;
SignalingClientMetrics signalingClientMetrics = pSampleConfiguration->signalingClientMetrics;
pSampleConfiguration->signalingClientCallbacks.messageReceivedFn = signalingMessageReceived;
STRCPY(pSampleConfiguration->clientInfo.clientId, clientId);
CHK_STATUS(createSignalingClientSync(&pSampleConfiguration->clientInfo, &pSampleConfiguration->channelInfo,
&pSampleConfiguration->signalingClientCallbacks, pSampleConfiguration->pCredentialProvider,
&pSampleConfiguration->signalingClientHandle));
// Enable the processing of the messages
CHK_STATUS(signalingClientFetchSync(pSampleConfiguration->signalingClientHandle));
#ifdef ENABLE_DATA_CHANNEL
pSampleConfiguration->onDataChannel = onDataChannel;
#endif
CHK_STATUS(signalingClientConnectSync(pSampleConfiguration->signalingClientHandle));
signalingClientGetMetrics(pSampleConfiguration->signalingClientHandle, &signalingClientMetrics);
// Logging this here since the logs in signaling library do not get routed to file
DLOGP("[Signaling Get token] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.getTokenCallTime);
DLOGP("[Signaling Describe] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.describeCallTime);
DLOGP("[Signaling Describe Media] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.describeMediaCallTime);
DLOGP("[Signaling Create Channel] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.createCallTime);
DLOGP("[Signaling Get endpoint] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.getEndpointCallTime);
DLOGP("[Signaling Get ICE config] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.getIceConfigCallTime);
DLOGP("[Signaling Connect] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.connectCallTime);
if (signalingClientMetrics.signalingClientStats.joinSessionCallTime != 0) {
DLOGP("[Signaling Join Session] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.joinSessionCallTime);
}
DLOGP("[Signaling create client] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.createClientTime);
DLOGP("[Signaling fetch client] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.fetchClientTime);
DLOGP("[Signaling connect client] %" PRIu64 " ms", signalingClientMetrics.signalingClientStats.connectClientTime);
pSampleConfiguration->signalingClientMetrics = signalingClientMetrics;
gSampleConfiguration = pSampleConfiguration;
CleanUp:
return retStatus;
}
STATUS logSignalingClientStats(PSignalingClientMetrics pSignalingClientMetrics)
{
ENTERS();
STATUS retStatus = STATUS_SUCCESS;
CHK(pSignalingClientMetrics != NULL, STATUS_NULL_ARG);
DLOGD("Signaling client connection duration: %" PRIu64 " ms",
(pSignalingClientMetrics->signalingClientStats.connectionDuration / HUNDREDS_OF_NANOS_IN_A_MILLISECOND));
DLOGD("Number of signaling client API errors: %d", pSignalingClientMetrics->signalingClientStats.numberOfErrors);
DLOGD("Number of runtime errors in the session: %d", pSignalingClientMetrics->signalingClientStats.numberOfRuntimeErrors);
DLOGD("Signaling client uptime: %" PRIu64 " ms",
(pSignalingClientMetrics->signalingClientStats.connectionDuration / HUNDREDS_OF_NANOS_IN_A_MILLISECOND));
// This gives the EMA of the createChannel, describeChannel, getChannelEndpoint and deleteChannel calls
DLOGD("Control Plane API call latency: %" PRIu64 " ms",
(pSignalingClientMetrics->signalingClientStats.cpApiCallLatency / HUNDREDS_OF_NANOS_IN_A_MILLISECOND));
// This gives the EMA of the getIceConfig() call.
DLOGD("Data Plane API call latency: %" PRIu64 " ms",
(pSignalingClientMetrics->signalingClientStats.dpApiCallLatency / HUNDREDS_OF_NANOS_IN_A_MILLISECOND));
DLOGD("API call retry count: %d", pSignalingClientMetrics->signalingClientStats.apiCallRetryCount);
CleanUp:
LEAVES();
return retStatus;
}
STATUS getIceCandidatePairStatsCallback(UINT32 timerId, UINT64 currentTime, UINT64 customData)
{
UNUSED_PARAM(timerId);