SipcRequest request = this.findRequest(response);
response.setRequest(request);
//找到了对应的请求，然后判断是否回复已经到了指定的回复次数，如果到了就从队列中移除，如果没有，就不移除
if(request!=null) {
request.incReplyTimes();
if(request.getNeedReplyTimes()==request.getReplyTimes()) {
synchronized(this.requestQueue) {
this.requestQueue.remove(request);
}
}