客户端

Firstly, the thesis introduced the development of VOD, the background and meaning of the program, then the author introduced the associated technology, mainly including the feature of multimedia, video compression technology and the protocols SCTP and RTP. Considering the ambulant of host , fluctuation of bandwidth,high error rate data in wireless networks ,the author proposed some QoS strategy in the wireless networks such as RTP/SCTP protocol stack , connection control of the server, two buffers in the client end point.,TFC congestion control algorithms ,etc. Based these strategies, the team members gives the software and hardware solution of the wireless video-on-demand system and gives the main modules design of the software system. The system adopted the C/S structure including two parts: server and client ,using the Mpeg-2 which is apporiate for networks as the supported format. The thesis emphatically researches on the video-serving module of the server and the sink module, player module of client.

本文首先介绍了视频点播系统的发展现状、课题的研究背景和意义；接着对课题的相关技术进行概述主要包括了多媒体特点，压缩技术，传输协议SCTP以及RTP；针对无线环境的节点移动性，带宽波动性，数据错误率高等三大特点，作者研究设计了无线环境下的QoS策略：RTP/SCTP协议栈，服务器准入控制机制，客户端双缓冲区，TFRC拥塞控制机制等；在这些策略的基础上设计了系统的软硬件解决方案，并对软件体系结构的主要模块进行了设计，整个视频点播系统采用C/S结构，由服务器，客户端2个部分组成，使用适合网络传输的流媒体格式Mpeg-2作为系统支持的格式，文中重点研究了服务器的视频服务模块以及客户端的接收模块和播放器模块，并利用线程池技术对系统进行实现。

Firstly it describes the research background, including rich client technology and Spring light weight J2EE develop framework. Then emphasize to introduce the Flex rich client technology, including three parts content of Flex Data Service: RPC service, message service and data management service, and client MVC framework —Cairngorm.

文章先简要描述了研究背景，包括富客户端技术与Spring轻量级开发框架，然后重点介绍了Flex富客户端技术，具体介绍Flex数据服务的三部分内容：RPC服务、消息服务、数据管理服务，以及客户端MVC框架——Cairngorm。

In this system, we introduces cluster architecture to provide global and scalable streaming caching proxy service mechanism; We implement streaming media transfer protocol on caching proxy end; We implement layered caching mechanism (global disk caching and memory caching) using dynamic sharing running memory buffer algorithm to support more stable and real-time parallel streams; We implement client request aggregation by means of streaming session sharing to reduce disk I/O and serve more user; We propose single streaming image to support the unify of pre-fetching streaming and caching streaming, which guarantees the proxy streaming of transparency for client; We design and implement streaming pre-fetching mechanism based on packet feedback information to reduce the number of "rebuffering" on client end; We bring forward streaming caching admission control policy fit for streaming caching proxy server to guarantee the QoS of streaming service.

该系统引入集群架构以提供全局的、可扩展的缓存代理服务机制；实现了缓存代理端的流媒体传输协议；采用动态共享运行缓冲区算法实现了分层缓存机制(全局磁盘缓存和内存缓存)以支持更多稳定、实时的并发流；利用流会话共享机制实现了客户请求聚集，从而减少磁盘I/O同时能服务更多的客户；提出了单一流映像，以支持预取流和缓存流的统一，从而保证代理端服务流对客户的完全透明；设计并实现了基于包反馈信息的流数据预取机制，从而减少了客户端的"rebuffering"次数；提出了适合于缓存代理服务器的流缓存准入控制策略，保证了流服务的QoS。

Since the step that is most computationally expensive and causes computational imbalance between clients and server in the SSL handshake protocol is the decryption computation of the server,we show that a client balanced secret exchange algorithm can be used to speedup SSL session initialization and undertake the previous computation tasks of server's decryption.

由于在SSL握手协议中最耗费计算资源和造成客户端与服务器端计算不平衡的步骤是服务器端解密运算，提出了客户端平衡的密钥交换算法，用来加速SSL会话的初始化和承担服务器端的解密的预运算。

In the invention, according to the channel selected by user, the client side determines the media server corresponding to the channel and the father node of the client side in the P2P system; according to the correlative information of the father node, the client side determines the initial fragment group ID of current process, and sends a request message for requesting the data of the channel to the media server; said request message contains said initial fragment group ID; said client side receives the channel data sent from the media server based on the initial fragment group ID, and receives the channel data sent from each father node.

本发明涉及互联网技术领域，尤其涉及一种网络通信数据处理方法、网络通信系统及客户端，用以减少选定频道的播放延迟。在本发明中，客户端根据用户选定的频道确定对应的媒体服务器及该客户端在点对点系统中的父节点；该客户端根据父节点的相关信息确定本次数据处理的起始分片组标识，并向该媒体服务器发送请求该频道数据的消息，该消息中携带该起始分片组标识；该客户端接收该媒体服务器根据该起始分片组标识发送的该频道的数据，且接收各父节点发送的该频道的数据。

This invention discloses a safety authenticating method for PC customer end including PC customer end presents registration request to a service via ID number and cipher, the server makes the first authentication based on customer ID number and the cipher to generate a field of reauthentication if it's passed to be fed back to PC customer end along with the finished authentication message; when PC customer end makes calls, it will send ID number and field of reauthentication during registration to media gate controller which transfer the ID number field of reauthentication to be server for second time authentication and refuse the calling if it's not passed, or receive the calling and feeding back the called information.

要约 本发明公开了一种PC客户端的安全认证方法，包括：PC客户端通过用户ID号码和密码，向服务器发起登录请求；服务器根据用户ID号码和密码进行第一次认证，若认证通过，生成一个用于再次认证的字段，并随认证通过消息返回给PC客户端；当PC客户端发起呼叫时，将用户ID号码和登录时获得的再次认证的字段一起传送给媒体网关控制器；媒体网关控制器将该用户ID号码、再次认证的字段一起传送给服务器进行第二次的认证，若认证没有通过，则拒绝呼叫，否则接受呼叫返回被叫信息。

If Memcached can carry connective moment in the client, do an identity examine and verify a lot of, perhaps restrict the Ip address that join client carries, be like it seems that also is not very difficult, regrettablly I am already old need not C, forget about the same, who has fun at join this function ah Iptables ah Robbin writes Balaschen to write a flaw that discovers Memcached, memcached does not have attestation mechanism, the client inside the local area network is carried, want to know the Key of the port of Memcached and Cache is worth only, can be accessed and change the value of Cache, put in potential security hidden danger.

要是memcached能在客户端连接的时候，做个身份审核就好多了，或者限制连接客户端的ip地址，看起来好像也不是很难，可惜我已经多年不用C了，都忘差不多，有谁有兴趣加入这个功能啊 iptables啊 robbin 写道balaschen 写道发现memcached的一个缺陷，memcached没有认证机制，局域网内的客户端，只要知道memcached的端口和cache的key值，就可以存取和改变cache的值，存在潜在的安全性隐患。

The testing system of this article is composed by two parts: a remote terminal emulator in the front end, running on the client computer, manages the load generator and results analysis; the server program in the back end, running on the computer of system under test, takes charge of transaction processing.

该测试系统主要分为两部分：前端的远程终端模拟器，运行在客户端的计算机上，实现测试系统的压力产生和测试数据统计功能；后端的服务器程序，运行在被测系统所在的计算机上，实现处理客户端请求的功能，即捕获客户端请求，按照请求对数据库进行操作，并返回操作结果。

The Screen And Audio Sharing system is Client/Server architecture.Client treats with receiving the screen and audio data package from server,recuring the screen and sound based on received data,and recording the action of computer input equipment.

屏幕和声音共享系统采用C／S结构，客户端负责接收服务端屏幕和声音网络数据包，根据接收的数据包重现服务端屏幕和声音，以及记录客户端输入设备动作并发送给服务端。

In this time, Server terminal can control test terminal to start test. During the period test terminal is testing, both of Server terminal and test terminal can stop test. If test is over, test terminal will send end-test command to Server. However if Server is free, it will tell test terminal to send test result and save the result into database. After this, Server will form table and chart of data. It can also print result if necessary. Thus the test for this time is over.

在进行测试的过程中，Server端可以通过网络通讯方式要求客户端停止测试，在客户端本地也可以手动的停止测试，测试完成之后，客户端会向主控台发出测试完成的信息并提示上传测试结果的请求，主控台如果空闲就会允许上传测试结果并将其保存到数据库中，根据测试结果形成报表图表以及直方图，如果需要，可以进行打印，这样，就完成了此次的测试工作。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。