Lesson16线程同步与异步套接字编程

SCTP - Steaming Control Transmission Protocol媒体流控制传输协议，对于学习IP化的NGN网络很有帮助。-SCTP- Steaming Control Transmission Protocol Stream Control Transmission Protocol media, the study of the NGN network IP helpful.

通过struts实现ajax,实现页面得无刷新,ajax为一种异步提交模式-through struts to achieve ajax achieve pages in REFRESHING, ajax asynchronous presented as a model

（利用GIF_LZW算法实现的）网络图片传输 技术特点 ~~~~~~~~ 一、使用TCP协议传输数据。理由：稳定性好。 二、使用字节数据流进行传输，理由： A:VB的String存在自动Unicode转换问题，影响速度； B:可以直接发送8位字节数据，不需要使用Base64编码，从而减少了编码时间。 三、使用GIF-LZW压缩算法压缩图像。理由： A:行程编码、Huffman压缩算法压缩率太低； B:JPEG压缩算法需要太多位运算，且运算量大（有专门MMX优化算法），不利于VB实现； C:GIF-LZW压缩算法压缩率较好，且我已想出VB语法下高效GIF-LZW压缩/解压算法。 四、使用“有序抖动”算法进行 色彩量化。理由：“有序抖动”处理的结果具有一定规律性，有助于LZW类算法压缩。-(using GIF_LZW algorithm) picture transmission network ~~~~~~~~ a technical features, the use of TCP to transmit data. Reason : good stability. Two, the use of byte data stream for transmission, reasons : A : VB String exist automatically Unicode conversion, the impact speed; B : can directly send eight bytes of data and do not need to use Base64 encoding, thereby reducing the coding time. 3, the use of GIF- LZW compression algorithm for image compression. Reason : A : itinerary coding, Huffman compression algorithm compression rate is too low; B : JPEG compression algorithm needs much-bit computing, and large amount of computation (with MMX spe

VC++编程环境。得到本地mac地址。界面友好，使用方便-VC++ programming environment. Get the local mac address. Friendly interface and easy to use

获取本地或远程的网络信息。比如：输入计算机名，就可以获得IP地址等信息.-Access to local or remote network information. For example: Enter the computer name, IP address, etc. on the available information.

p-持续CSMA协议下，一个用户在发送之前，先侦听信道，若是空闲，就以概率p发送出去，而以q =1-p的概率推迟到下一帧时。如果下一帧时仍是空闲，便再次以概率p发送而以q推迟到再下一帧时。直到发送成功或另外一用户开始发送时为止。若一开始就侦听到信道忙，它就等到下一帧时，然后再开始上述过程。若发生冲突，这等待一随机时间后重新开始。本实验中取q值为0.5。求的是0.5-持续CSMA。 -p-persistent CSMA agreement, a user before sending the first interception channel, if idle, with probability p sent, and to q = 1-p probability postponed to the next frames. If the next frame was still idle, they again sent with probability p and q to further postponed to the next frames. Until this a success or other users at the beginning of this date. If an interception at the start of the busy channel, it will wait till the next frames, and then begin the process. If conflict breaks out, waiting for a random period of time after the re-start. The experiments take q value of 0.5. For the 0.5-sustained CSMA.

用Java实现日志功能，操作方便，记录客户端与服务器间的任何操作-using Java log function, easy to operate and record client and server operation of any

很多人都有过使用网络蚂蚁或网络快车软件下载互联网文件的经历，这些软件的使用可以大大加速互联网上文件的传输速度，减少文件传输的时间。这些软件为什么有如此大的魔力呢？其主要原因是这些软件都采用了多线程下载和断点续传技术。如果我们自己来编写一个类似这样的程序，也能够快速的在互联网上下载文件，那一定是非常愉快的事情。下面我就讲一讲如何利用C#语言编写一个支持多线程下载文件的程序，你会看到利用C#语言编写网络应程序是多么的容易，从中也能体会到C#语言中强大的网络功能。 -many people use the Internet, they had ants Network Express software or download files over the Internet experience, the use of such software can greatly speed up the documents on the Internet speeds, reduce file transfer time. These software Why is there so much magic? Its main reason is the software used to download and multithreading technology HTTP. If we prepare ourselves to a similar case in the process and to quickly download on the Internet, it must be a very pleasant thing. Now, I would talk about how to use C# language support for a multi-threaded download procedures, you will see the use of C# language network should procedure is how easy from can understand C# Language powerful networking capabilities.

消息队列开发,实现消息队列创建删除,发送回收-Message Queue development, realize the creation of message queue delete, send recovery

VC调用cics中间件，其中的调用流程很清淅，大家有这方面要求的可以看一下-VC call CICS middleware, in which the call flow is very clear mission, we have in this area can be requested to look at