message: add getLocalPort
diff: @@ -75,6 +75,16 @@ class StreamerSession
  this.emitter = new EventEmitter();
  }
  + /**
  + * Get the local rtp/udp port
  + * @returns {Number} port number
  + */
  + getLocalPort()
  + {
  + return this.session.GetLocalPort();
  + }
  +
  +
  /**
  * Returns the incoming stream track associated with this streaming session
  * @returns {IncomingStreamTrack}
  