IEnumerator SendRequest()
{
///加yield return null目的是将Web请求延迟到下一帧开始，避免web回复委托还没添加，web已经回复，导致错过信息
yield return(null);
WebRequestBase webRequest = webRequestList[0];
webRequestList.RemoveAt(0);
yield return(StartCoroutine(webRequest.SendRequest()));
CheckQueue();
}
public void AddWebRequest(WebRequestBase webRequest)
{
webRequestList.Add(webRequest);
CheckQueue();
}
