message: Add createIncomingString with just streamId param and fix default source
diff: @@ -761,11 +761,19 @@ class Transport
  /**
  * Create an incoming stream object from the media stream info objet
  - * @param {StreamInfo|Object} info Contains the ids and ssrcs of the stream to be created
  + * @param {StreamInfo|Object|String} info Contains the ids and ssrcs of the stream to be created
  * @returns {IncomingStream} The newly created incoming stream object
  */
  createIncomingStream(info)
  {
  + //If it is a string
  + if (typeof info == "string")
  + //It is the id
  + info = {
  + id: info,
  + tracks: []
  + };
  +
  //IF we already have that id
  if (this.incomingStreams.has(info.getId ? info.getId() : info.id))
  //Launch exception
  @@ -876,8 +884,8 @@ class Transport
  //Launch exception
  throw new Error("Could not add incoming source group to native transport");
  - //Create source arrayu
  - const sources = [source];
  + //Create source map
  + const sources = {"":source};
  //Create new track
  const incomingStreamTrack = new IncomingStreamTrack(media,id,mediaId,new Native.RTPReceiverFacade(this.transport),sources);
  