var RTCPeerConnection = function()

in monitoring-stack-cdk/resources/frontend/connect-rtc.js [3125:3204]
61 lines of code
12 McCabe index (conditional complexity)

      var RTCPeerConnection = function(config) {
        var pc = this;
    
        var _eventTarget = document.createDocumentFragment();
        ['addEventListener', 'removeEventListener', 'dispatchEvent']
            .forEach(function(method) {
              pc[method] = _eventTarget[method].bind(_eventTarget);
            });
    
        this.canTrickleIceCandidates = null;
    
        this.needNegotiation = false;
    
        this.localStreams = [];
        this.remoteStreams = [];
    
        this._localDescription = null;
        this._remoteDescription = null;
    
        this.signalingState = 'stable';
        this.iceConnectionState = 'new';
        this.connectionState = 'new';
        this.iceGatheringState = 'new';
    
        config = JSON.parse(JSON.stringify(config || {}));
    
        this.usingBundle = config.bundlePolicy === 'max-bundle';
        if (config.rtcpMuxPolicy === 'negotiate') {
          throw(makeError('NotSupportedError',
              'rtcpMuxPolicy \'negotiate\' is not supported'));
        } else if (!config.rtcpMuxPolicy) {
          config.rtcpMuxPolicy = 'require';
        }
    
        switch (config.iceTransportPolicy) {
          case 'all':
          case 'relay':
            break;
          default:
            config.iceTransportPolicy = 'all';
            break;
        }
    
        switch (config.bundlePolicy) {
          case 'balanced':
          case 'max-compat':
          case 'max-bundle':
            break;
          default:
            config.bundlePolicy = 'balanced';
            break;
        }
    
        config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);
    
        this._iceGatherers = [];
        if (config.iceCandidatePoolSize) {
          for (var i = config.iceCandidatePoolSize; i > 0; i--) {
            this._iceGatherers.push(new window.RTCIceGatherer({
              iceServers: config.iceServers,
              gatherPolicy: config.iceTransportPolicy
            }));
          }
        } else {
          config.iceCandidatePoolSize = 0;
        }
    
        this._config = config;
    
        // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...
        // everything that is needed to describe a SDP m-line.
        this.transceivers = [];
    
        this._sdpSessionId = SDPUtils.generateSessionId();
        this._sdpSessionVersion = 0;
    
        this._dtlsRole = undefined; // role for a=setup to use in answers.
    
        this._isClosed = false;
      };