code: func newMsgEventer(rw MsgReadWriter, feed *event.Feed, peerID enode.ID, proto string) *msgEventer {
  	return &msgEventer{
  		MsgReadWriter: rw,
  		feed:          feed,
  		peerID:        peerID,
  		Protocol:      proto,
  	}
  }
docs: // newMsgEventer returns a msgEventer which sends message events to the given
  // feed