【c++】跟webrtc学状态改变

• peerconn的状态看起来只是为了通知上层

PeerConnectionState

  // See https://w3c.github.io/webrtc-pc/#dom-rtcpeerconnectionstate
  enum class PeerConnectionState {
   
    kNew,
    kConnecting,
    kConnected,
    kDisconnected,
    kFailed,
    kClosed,
  };


static constexpr absl