if(!tryExecuteRequest("i", requestId++, writer, 1))
raiseException(new TransferException("Init Http Transfer failed.."));
while(!closeFlag) {
writer.clear();
BytesEntry entry = bytesEntryQueue.poll(5,TimeUnit.SECONDS); //等待五秒,如果没有元素也返回
if(entry!=null) {
writer.writeBytes(entry.getBytes(), entry.getOffset(), entry.getLength()); //
while(bytesEntryQueue.size()>0) {
entry = bytesEntryQueue.poll();