日志客户端，提供一个接口，在程序中调用，即可向服务器发送日志信息，调用的接口类似于printf函数。（修改服务器IP重新编译即可使用）-Log client provides an interface to call in the program, you can send to the server log information, call the interface is similar to printf function. (Modify the server to use IP to