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1、2008 International Conference on Advanced Computer Theory and Engineering2008年高级计算机理论与控制工程国际会议An Effective Remote Control System Based On TCP/IP一种基于TCP / IP协议的有效远程控制系统Xueyu GengSchool of Civil Engineering 土木工程学院Qingdao Technological University 青岛理工大学Qingdao, 266033, China 中国青岛 Shunyao Wu, Jinlong W
2、ang, and Peng LiSchool of Computer Engineering 计算机工程学院Qingdao Technological University 青岛理工大学Qingdao, 266033, China 中国青岛 With the network technology development, remote technology is gradually occupying the technology mainstream. It has become more and more popular in the home officeand distance ed
3、ucation. The rapid development provides a broad world to the remote control software. Pcanywhere,damewhere, QQ Remote Assistance, and other remote control software have emerged. In remote control, improving efficiency and ensuring accuracy of the transmission are paramount to evaluate the success of
4、 a remote control software.This paper has developed a remote control system,and focuses on intercepting the control and the images, and TCP-stick packages. Solving these problems well is useful to improve the efficiency of the system and ease the pressureon network. Finally, through analysis and exp
5、eriments, methods are proved to be effective.随着网络技术的发展，远程技术逐渐占据了技术的主流。对在家里办公和远程教育的人来说，它已经变得越来越受欢迎。它的快速发展为远程控制软件提供了广阔的天地。PcAnywhere, damewhere, QQ远程协助及其他远程控制软件已经出现，在远程控制领域，提高效率和确保准确的传输对评价一个远程控制软件的成功与否是极为重要的。本文描述了一种远程控制系统，并侧重于拦截控制、图像及TCP粘包。有效的解决这些问题，有利于提高系统的效率和缓解网络的压力。最后，通过分析和试验，方法被证明是有效的。1. Introduct
6、ion1. 引言The rapid development of network technology, home office and distance education provides a broad world to the remote control software. As early as 1998, IDC expected the remote control software market would be the third fastest growing area in the consumer market which was supported by the s
7、oftware technology 1.随着网络技术的飞速发展，家庭办公和远程教育为远程控制软件提供了广阔的天地。早在1998年，IDC就预测远程控制软件的市场将是第三个由软件技术支持的消费市场里增长最快的领域。Remote control 1, 2, 3, 4 is a technology that administrators connect the target computer through the network by remote dialing or the way that both dial into Internet, then manage and maintain
8、 the remote computers by local host 1. The remote control software is based on the Client/Server model oriented towards connection agreement(TCP/IP). It includes a server program installed on the client, and a client program on the host. The general operating principle of remote control is shown in
9、Figure 1.远程控制是一种管理员通过远程拨号上网或双方拨号接入Internet的方式连接目标计算机，然后通过本地主机管理和维护远程计算机的技术。远程控制软件是基于客户机/服务器模式面向连接协议（TCP / IP）。它包括安装在客户端上的服务器程序和在主机上的客户端程序。远程控制的基本工作原理见图1。Figure 1. One-to-one network topology remote control.图1 一对一远程控制网络拓扑图First of all, the client should set two kinds of authorities of passwords, and
10、tell the IP address and password to the host.After building the connection, the host should set the image quality and FPS (frames per second). Then, the client captures the screen, compresses the images and sends the images to the host. After receiving the screen images, the host can watch the scree
11、n of the client. Finally, the host can control the client. When the host operates on the graphical interface, the mouse action and the keyboard input should be packaged to the client. The client operates the information,and sends the screen images to the host, and so on.首先，客户应设置两种类型的密码权限，告诉主机IP地址和密码
12、。建立连接后，主机应设置图像质量和FPS（帧每秒），然后，客户端捕获屏幕，压缩图像并将图像传送到主机。收到屏幕图像后，主机可以查看客户端的屏幕。最后，主机可以控制客户端。当主机在图形界面上进行操作，鼠标的操作和键盘的输入被打包到客户端。客户端运行这些信息，并将屏幕图像等发送到主机。According to the basic process of the remote control as shown in Figure 1, the paper developed a remote control software, focused on intercepting the control a
13、nd the images, and TCP-stick packages. Solving these problems well is useful to improve the efficiency of the system and ease the pressure on network. Finally, with analysis and experiments, methods are proved to be effective.依据如图1所示的远程控制的基本过程，本论文描述了一个远程控制软件，侧重于拦截控制、图像及TCP粘包。有效的解决这些问题，有利于提高系统的效率和缓解网
14、络的压力。最后，通过分析和试验，方法被证明是有效的。The rest of the paper is organized as follows. Section 2 introduces the overview framework of remote control system and the function of each subsystem. The detailedmethod to solve the control interception will be introduced in Section 3, and the method to solve the image ca
15、pture and the image display is described in Section 4, and the solution of the TCP-stick packages in Section 5. The experimentalanalysis is described in Section 6. The paper is concluded in the last section.本文的其余部分具体如下。第2部分介绍远程控制系统的框架概述和各子系统的功能。第3部分介绍控制拦截的详细的解决方法，第4部分介绍图像采集和图像显示的解决方法，第5部分介绍TCP粘包解决方案，第6部分中介绍实验分析，论文最后部分得出结论。2. Overview Framework2. 框架概述Figure 2. The relations among the six subsystems.图2 六个子系统之间的关系The paper divided remote control system into six subsystems, authority subsystem, communications subsystem,
