How to use semantic-sdp - 10 common examples

const Native		= require("./Native");
const EventEmitter	= require('events').EventEmitter;
const SemanticSDP	= require("semantic-sdp");
const SDPInfo		= SemanticSDP.SDPInfo;
const Setup		= SemanticSDP.Setup;
const MediaInfo		= SemanticSDP.MediaInfo;
const CandidateInfo	= SemanticSDP.CandidateInfo;
const DTLSInfo		= SemanticSDP.DTLSInfo;
const ICEInfo		= SemanticSDP.ICEInfo;
const StreamInfo	= SemanticSDP.StreamInfo;
const TrackInfo		= SemanticSDP.TrackInfo;
const SourceGroupInfo	= SemanticSDP.SourceGroupInfo;

const Transponder	= require("./Transponder");

function getStatsFromOutgoingSource(source) 
{
	return {
		numPackets	: source.numPackets,
		numRTCPPackets	: source.numRTCPPackets,
		totalBytes	: source.totalBytes,
		totalRTCPBytes	: source.totalRTCPBytes,
		bitrate		: source.bitrate // Acumulator window is 1000ms so Instant==InstantAvg
	};
}

const Native		= require("./Native");
const EventEmitter	= require('events').EventEmitter;
const SemanticSDP	= require("semantic-sdp");
const SDPInfo		= SemanticSDP.SDPInfo;
const Setup		= SemanticSDP.Setup;
const MediaInfo		= SemanticSDP.MediaInfo;
const CandidateInfo	= SemanticSDP.CandidateInfo;
const DTLSInfo		= SemanticSDP.DTLSInfo;
const ICEInfo		= SemanticSDP.ICEInfo;
const StreamInfo	= SemanticSDP.StreamInfo;
const TrackInfo		= SemanticSDP.TrackInfo;
const SourceGroupInfo	= SemanticSDP.SourceGroupInfo;

const Transponder	= require("./Transponder");

function getStatsFromOutgoingSource(source) 
{
	return {
		numPackets	: source.numPackets,
		numRTCPPackets	: source.numRTCPPackets,
		totalBytes	: source.totalBytes,
		totalRTCPBytes	: source.totalRTCPBytes,
		bitrate		: source.bitrate // Acumulator window is 1000ms so Instant==InstantAvg
	};
}

/**

const Native		= require("./Native");
const EventEmitter	= require("events").EventEmitter;
const LayerInfo		= require("./LayerInfo");
const SemanticSDP	= require("semantic-sdp");
const SDPInfo		= SemanticSDP.SDPInfo;
const Setup		= SemanticSDP.Setup;
const MediaInfo		= SemanticSDP.MediaInfo;
const CandidateInfo	= SemanticSDP.CandidateInfo;
const DTLSInfo		= SemanticSDP.DTLSInfo;
const ICEInfo		= SemanticSDP.ICEInfo;
const StreamInfo	= SemanticSDP.StreamInfo;
const TrackInfo		= SemanticSDP.TrackInfo;
const TrackEncodingInfo = SemanticSDP.TrackEncodingInfo;
const SourceGroupInfo	= SemanticSDP.SourceGroupInfo;

function getStatsFromIncomingSource(source) 
{
	const stats = {
		lostPackets	: source.lostPackets,
		dropPackets	: source.dropPackets,
		numPackets	: source.numPackets,
		numRTCPPackets	: source.numRTCPPackets,
		totalBytes	: source.totalBytes,
		totalRTCPBytes	: source.totalRTCPBytes,
		totalPLIs	: source.totalPLIs,
		totalNACKs	: source.totalNACKs,
		bitrate		: source.bitrate, // Acumulator window is 1000ms so Instant==InstantAvg
		layers		: [],

const Native		= require("./Native");
const EventEmitter	= require('events').EventEmitter;
const SemanticSDP	= require("semantic-sdp");
const SDPInfo		= SemanticSDP.SDPInfo;
const Setup		= SemanticSDP.Setup;
const MediaInfo		= SemanticSDP.MediaInfo;
const CandidateInfo	= SemanticSDP.CandidateInfo;
const DTLSInfo		= SemanticSDP.DTLSInfo;
const ICEInfo		= SemanticSDP.ICEInfo;
const StreamInfo	= SemanticSDP.StreamInfo;
const TrackInfo		= SemanticSDP.TrackInfo;
const SourceGroupInfo	= SemanticSDP.SourceGroupInfo;

const Transponder	= require("./Transponder");

function getStatsFromOutgoingSource(source) 
{
	return {
		numPackets	: source.numPackets,
		numRTCPPackets	: source.numRTCPPackets,
		totalBytes	: source.totalBytes,
		totalRTCPBytes	: source.totalRTCPBytes,
		bitrate		: source.bitrate // Acumulator window is 1000ms so Instant==InstantAvg

const Native		= require("./Native");
const EventEmitter	= require("events").EventEmitter;
const LayerInfo		= require("./LayerInfo");
const SemanticSDP	= require("semantic-sdp");
const SDPInfo		= SemanticSDP.SDPInfo;
const Setup		= SemanticSDP.Setup;
const MediaInfo		= SemanticSDP.MediaInfo;
const CandidateInfo	= SemanticSDP.CandidateInfo;
const DTLSInfo		= SemanticSDP.DTLSInfo;
const ICEInfo		= SemanticSDP.ICEInfo;
const StreamInfo	= SemanticSDP.StreamInfo;
const TrackInfo		= SemanticSDP.TrackInfo;
const TrackEncodingInfo = SemanticSDP.TrackEncodingInfo;
const SourceGroupInfo	= SemanticSDP.SourceGroupInfo;

function getStatsFromIncomingSource(source) 
{
	const stats = {
		lostPackets	: source.lostPackets,
		dropPackets	: source.dropPackets,
		numPackets	: source.numPackets,
		numRTCPPackets	: source.numRTCPPackets,
		totalBytes	: source.totalBytes,
		totalRTCPBytes	: source.totalRTCPBytes,
		totalPLIs	: source.totalPLIs,
		totalNACKs	: source.totalNACKs,
		bitrate		: source.bitrate, // Acumulator window is 1000ms so Instant==InstantAvg
		layers		: [],
	};

const Native		= require("./Native");
const EventEmitter	= require('events').EventEmitter;
const SemanticSDP	= require("semantic-sdp");
const SDPInfo		= SemanticSDP.SDPInfo;
const Setup		= SemanticSDP.Setup;
const MediaInfo		= SemanticSDP.MediaInfo;
const CandidateInfo	= SemanticSDP.CandidateInfo;
const DTLSInfo		= SemanticSDP.DTLSInfo;
const ICEInfo		= SemanticSDP.ICEInfo;
const StreamInfo	= SemanticSDP.StreamInfo;
const TrackInfo		= SemanticSDP.TrackInfo;
const SourceGroupInfo	= SemanticSDP.SourceGroupInfo;

const Transponder	= require("./Transponder");

function getStatsFromOutgoingSource(source) 
{
	return {
		numPackets	: source.numPackets,
		numRTCPPackets	: source.numRTCPPackets,
		totalBytes	: source.totalBytes,
		totalRTCPBytes	: source.totalRTCPBytes,
		bitrate		: source.bitrate // Acumulator window is 1000ms so Instant==InstantAvg
	};
}

/**
 * Audio or Video track of a media stream sent to a remote peer

const Native		= require("./Native");
const EventEmitter	= require("events").EventEmitter;
const LayerInfo		= require("./LayerInfo");
const SemanticSDP	= require("semantic-sdp");
const SDPInfo		= SemanticSDP.SDPInfo;
const Setup		= SemanticSDP.Setup;
const MediaInfo		= SemanticSDP.MediaInfo;
const CandidateInfo	= SemanticSDP.CandidateInfo;
const DTLSInfo		= SemanticSDP.DTLSInfo;
const ICEInfo		= SemanticSDP.ICEInfo;
const StreamInfo	= SemanticSDP.StreamInfo;
const TrackInfo		= SemanticSDP.TrackInfo;
const TrackEncodingInfo = SemanticSDP.TrackEncodingInfo;
const SourceGroupInfo	= SemanticSDP.SourceGroupInfo;

function getStatsFromIncomingSource(source) 
{
	const stats = {
		lostPackets	: source.lostPackets,
		dropPackets	: source.dropPackets,
		numPackets	: source.numPackets,
		numRTCPPackets	: source.numRTCPPackets,
		totalBytes	: source.totalBytes,
		totalRTCPBytes	: source.totalRTCPBytes,
		totalPLIs	: source.totalPLIs,
		totalNACKs	: source.totalNACKs,
		bitrate		: source.bitrate, // Acumulator window is 1000ms so Instant==InstantAvg
		layers		: [],
	};

// 
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
// 
// https://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software distributed under the License
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
// or implied. See the License for the specific language governing permissions and limitations under
// the License.
//
import {
  CodecInfo
} from 'semantic-sdp'

export const videoCodecs = CodecInfo.MapFromNames(['VP8'], true)

export const headerExtensions = new Set([
  'urn:ietf:params:rtp-hdrext:toffset',
  'http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time',
  'urn:3gpp:video-orientation',
  'http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01',
  'http://www.webrtc.org/experiments/rtp-hdrext/playout-delay',
  'urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id',
  'urn:ietf:params:rtp-hdrext:sdes:repair-rtp-stream-id',
  'urn:ietf:params:rtp-hdrext:sdes:mid'
])

export const initOffer = (endpoint, offerSdp) => {
  const offer = SDPInfo.process(offerSdp)

  // transport :: Transport
  const transport = endpoint.createTransport({
    dtls: offer.getDTLS(),
    ice: offer.getICE()
  })

  transport.setRemoteProperties({
    audio: offer.getMedia('audio'),
    video: offer.getMedia('video')
  })

  // answer :: SDPInfo
  const answer = new SDPInfo()

  // dtlsInfo :: DTLSInfo
  const dtlsInfo = transport.getLocalDTLSInfo()
  answer.setDTLS(dtlsInfo)

  // iceInfo :: ICEInfo
  const iceInfo = transport.getLocalICEInfo()
  answer.setICE(iceInfo)

  // localCandidates :: Array CandidateInfo
  const localCandidates = endpoint.getLocalCandidates()
  for (const candidate of localCandidates) {
    answer.addCandidate(candidate)
  }

  return {

export const initOffer = (endpoint, offerSdp) => {
  const offer = SDPInfo.process(offerSdp)

  // transport :: Transport
  const transport = endpoint.createTransport({
    dtls: offer.getDTLS(),
    ice: offer.getICE()
  })

  transport.setRemoteProperties({
    audio: offer.getMedia('audio'),
    video: offer.getMedia('video')
  })

  // answer :: SDPInfo
  const answer = new SDPInfo()

  // dtlsInfo :: DTLSInfo