简单的TCP服务器，实现多线程，可端口复用，此程序主要模拟对分布式网络各个节点进行轮询，处理返回信息，后插入本地数据库。(Simple TCP server, to achieve multi-threaded, port multiplexing, this program mainly simulates the distributed network each node polling, processing returned information, and then inserted into the local database.)