通信服务器

Ajax provide asynchronous communication server capacity, so that users from the request / response cycle to extricate themselves.

Ajax提供与服务器异步通信的能力，从而使用户从请求/响应的循环中解脱出来。

Written by VC process simulation QQ communications software, including both client and server, you can free communication.

详细说明：用VC写的模拟QQ程序的通信软件，其中客户端和服务器都有，可以自由通信。

It also puts emphasis on the communication principle to host computer,realtime communication and the design of freeport communication and center server.

以西门子S7 200PLC为例，着重介绍了PC与PLC通信基本原理、实时通讯方式和自由口通信协议以及中心服务器的设计方法。

A data output control terminal 300 communicably connects a user-owned portable terminal 100, printing devices PR1 through PRn situated at various locations , and WWW servers DS1 through DSm, via the Internet 400, data printing requests are received from the portable terminal 100, data relating to the data printing request is obtained from a WWW server DS, one of the printing devices PR is selected, and the obtained data is output to the selected printing device PR.

数据输出控制终端300通过因特网400与用户所持的便携式终端100、分散设置在各地的打印装置PR 1 ～PR n 及WWW服务器DS 1 ～DS m 进行可通信连接，从便携式终端100接收数据打印请求，从WWW服务器DS获取与其数据打印请求有关的数据，选择某一打印装置PR，并向其所选择的打印装置PR输出所获取的数据。

The incompliance in Web implementations can result in serious problem during the communication between a Web server and a client.

协议是正确通信的基础，Web服务器实现的协议不兼容性问题，将导致通信错误，带来安全问题。

The core work of this paper is developing a communication subsystem which supports the communication of multiplicate messages and many communication forms according to the applications of the network classroom, as well as applying the technology of load balance to the network classroom. Furthermore, it accomplished the whole design of the network classroom and the realization of the functions of the server and the client.

本文的核心工作是针对网络教室应用，开发了一个支持多种信息类型和多种通信方式的通信子系统，并将负载平衡技术应用于网络教室，以满足大规模用户的需求；另外还完成了网络教室的整体设计以及服务器、客户端基本功能的实现。

Server agent coded by writer is presented in detail through the SART method,and some creative key technologies are analyzed such as the combination of the software signal、the properties of process and process communication that not only solved the real monitoring problem;the adoption of the UNIX phoney system-PROCFS that not only solved the real monitoring problem;Encoding and decoding to SNMP message on BER-solved the problem on monitor between several operating system.

文章最后给出了笔者负责编写的服务器代理的实现技术，采用SART方法对服务器代理的整体框架和各组成模块进行了详细描述，并对编码过程中的一些创新技术进行了分析，如：将UNIX系统中软件中断信号、UNIX进程的特性和进程间通信有机的结合起来，解决了代理的启动/关闭进程、探测进程状态等实际监控难题；利用UNIX系统的伪文件系统PROCFS进行资源探测，解决了系统中不能用SNMP进行探测的实际监控难题；采用BER编码规范对SNMP报文编码和解码，解决了系统中利用SNMP进行跨平台监控的难题。

The teacher administration module mainly realizes the C/S pattern system server management function, including the response customer end connection request, the user registration ,lands, lands the notice, demonstrated the on-line user tabulates, the user withdrawal notice, to the system database file management, the server carries on the P2P correspondence, the customer end according to the route algorithm assignment best pitch point for the customer end can deposit and withdraw the data as necessary and so on .

教师管理模块主要实现C/S模式系统的服务器管理功能，包括响应客户端的连接请求、用户注册、登陆、登陆通知、显示在线用户列表、用户退出通知、对系统数据库文件管理、服务器根据路由算法分配最佳节点给客户端进行P2P通信、客户端能随时存取数据等。

The second layer is the communications game platform, this is server cluster's only entrance, retransmits all functions request for the service point pond in concrete server, and processing all non- functions requested, and manages the terminal user, carries on the condition to maintain, the diary record and so on.

第二层是游戏通信平台，这是服务器集群的唯一入口，转发所有的功能请求给服务结点池中的具体服务器，并处理所有的非功能请求，并管理终端用户、进行状态保持、日志记录等。

Similar QQ simple communications server and client, a server to several client transponders.

详细说明：类似QQ的通信的简单服务器和客户端程序，一个服务器可以向好几个客户端转发。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。