基于UDP实现E-Mail传输 工作过程描述: 客户端描述: 1. Client(以下简称C端)端将邮件以规定的大小封装为符合要求的UDP包。 2. 将封装好的UDP包发出,并等待Server(以下简称S端)端收到相应的UDP包后返回的回应Acknowledge(以下简称为ACK)。若收到的为Positive ACK,则继续发包;若收到的为Negtive ACK,则将应发的包重发。 3. 直到C端将所有要发的包都发完,并都已经收到S端的回应,最后发一个End包,直接关闭此进程。 服务器端描述: 1. S端启动服务进程,并监听相应端口。 2. 若收到C端发出的有关请求,按如下情况给出相应的反映: a. 将收到的包进行检测,若收到的包有错则抛弃(discard),并发给C端一个negtive ACK。 b. 将收到的包进行检测,若收到的包正常,则将此包进行解包,将内容输出至一临时文件;并发给C端一个positive ACK。 3.依次收到来自C断的包,直到收到end为止,并关闭此进程,转回监听状态。
上传时间: 2014-12-08
上传用户:sxdtlqqjl
Ruby on Rails e-book for new leaners
上传时间: 2014-01-19
上传用户:cuibaigao
The MPC8280 is a versatile communications processor that integrates on e chip a high-performance PowerPC™ RISC microprocessor, a very flexible system integration unit, and many communications peripheral controllers that can be used in a variety of applications, particularly in communications and networking systems
标签: high-performance communications integrates versatile
上传时间: 2016-06-20
上传用户:1101055045
Thinking in C++(Second Edition),Volume One:Introduction to Standard C++ 国外经典C++原版书库《C++编程思想(第2版)第1卷:标准C++导引》/(美)埃克尔(Eckel,B)著;刘宗田等译 十分经典、难得!
标签: Introduction Thinking Standard Edition
上传时间: 2014-12-07
上传用户:jkhjkh1982
本人编写的incremental 随机神经元网络算法,该算法最大的特点是可以保证approximation特性,而且速度快效果不错,可以作为学术上的比较和分析。目前只适合benchmark的regression问题。 具体效果可参考 G.-B. Huang, L. Chen and C.-K. Siew, “Universal Approximation Using Incremental Constructive Feedforward Networks with Random Hidden Nodes”, IEEE Transactions on Neural Networks, vol. 17, no. 4, pp. 879-892, 2006.
标签: incremental 编写 神经元网络 算法
上传时间: 2016-09-18
上传用户:litianchu
开源的e-learning系统。Java环境,B/S结构。
标签: e-learning Java 开源
上传时间: 2013-12-25
上传用户:xfbs821
CRC码产生器与校验器程序 Features : Executes in one clock cycle per data word Any polynomial from 4 to 32 bits Any data width from 1 to 256 bits Any initialization value Synchronous or asynchronous reset
标签: polynomial Features Executes clock
上传时间: 2013-12-18
上传用户:Ants
This utility has two views: (a) one view that will show you the entire PnP enumeration tree of device objects, including relationships among objects and all the device s reported PnP characteristics, and (b) a second view that shows you the device objects created, sorted by driver name. There is nothing like this utility available anywhere else.
标签: enumeration utility entire devic
上传时间: 2013-12-17
上传用户:zjf3110
The "GEE! It s Simple" package illustrates Gaussian elimination with partial pivoting, which produces a factorization of P*A into the product L*U where P is a permutation matrix, and L and U are lower and upper triangular, respectively. The functions in this package are accurate, but they are far slower than their MATLAB equivalents (x=A\b, [L,U,p]=lu(A), and so on). They are presented here merely to illustrate and educate. "Real" production code should use backslash and lu, not this package.
标签: illustrates elimination Gaussian pivoting
上传时间: 2016-11-09
上传用户:wang5829
The "GEE! It s Simple" package illustrates Gaussian elimination with partial pivoting, which produces a factorization of P*A into the product L*U where P is a permutation matrix, and L and U are lower and upper triangular, respectively. The functions in this package are accurate, but they are far slower than their MATLAB equivalents (x=A\b, [L,U,p]=lu(A), and so on). They are presented here merely to illustrate and educate. "Real" production code should use backslash and lu, not this package.
标签: illustrates elimination Gaussian pivoting
上传时间: 2014-01-21
上传用户:lxm