今天在看C#高级编程(第9版)的时候,在768页看到这样的一段代码 SmtpClient sc = new SmtpClient(); sc.Host = "邮箱服务器地址"; MailMessage mm = new MailMessage(); mm.Sender = new MailAddress("公司邮箱", "发件人"); mm.To.Add(new MailAddress("我的163邮箱", "接收人

1222.762730] br0: received packet on nbif0 with own address as source address[ 1222.769697] br0: received packet on nbif0 with own address as source address[ 1227.722399] net_ratelimit: 38515 callbacks suppressed[ 1227.726398] br0: received packet on

PAE是Physical Address Extension的缩写,即物理地址扩展.简单来说,就是把IA-32处理器的寻址能力从原来的4GB扩展到64GB.寻址4GB空间,要求物理地址的宽度为32位.类似的,要寻址64GB空间,那么物理地址的宽度就是36位.因为这个原因,PAE又被称为PAE-36bit. 一般电脑都可以轻松看出是不是使用了PAE,最简单是看系统属性: 如果不启用PAE机制,每个进程的DirBase 的低12位应该是0,启用PAE机制低5位是0.在lkd模式下,!pte显示是不正

最近在linux服务器安装vsftp服务.经过一轮设置,终于可以连接上了,用winSCP连接,刷新目录就提示这个错误. 解决办法: vim /etc/vsftpd.conf  ,编辑配置文件,最后加上下面几行配置: pasv_address=54.69.120.54 pasv_max_port=55000 pasv_min_port=50000 pasv_address 这个是你服务器的公网ip

最近在linux服务器安装vsftp服务.经过一轮设置,终于可以连接上了,用winSCP连接,刷新目录就提示这个错误. 解决办法: vim /etc/vsftpd.conf  ,编辑配置文件,最后加上下面几行配置: pasv_address=54.69.120.54 pasv_max_port=55000 pasv_min_port=50000 pasv_address 这个是你服务器的公网ip 原文出处:http://www.pagefabric.com/blogs/2014/10/23/fi

提示8002端口被占用,可以这样终止掉后再启动 sudo fuser -k 8002/tcp

找了一堆没用. 最后终于 1.使用winSCP连接ftp时,编辑会话,单击高级. 2.进入高级设置之后,单击连接,查看连接模式,把被动模式的勾,勾掉. 3.单击确定,然后保存配置,重新连接FTP,OK

Create the Project and Design the Interface First, create a new Xcode project using the Single View Template. Let’s name the project as “MyLocationDemo” and set the project with the following parameters: MyLocationDemo Xcode Project Once you’ve succe

address payable  -->  address address payable addr1 = msg.sender; address addr2 = addr1; // 隐式转 address addr3 = address(addr1); // 显式转 address  -->  address payable address addr1 = msg.sender; address payable addr2 = address( uint160(addr1) ); // 需要

ERC20 Short Address Attack 什么是ERC20 Application Binary Interface(ABI) ERC20 Short Address Attack 开始攻击 怎么利用? 攻击防范 什么是ERC20 代币大家应该都很熟悉了,代币也叫 token, 他不是像比特币,以太坊等虚拟币这样建立在大量技术人员的辛苦工作基础之上,用于维持公链运行的虚拟货币.代币一般是依赖于以太坊平台,就是一个以太坊平台上面的一个智能合约里面记录的数字. 所以说token没有任何价

[引子] 在PyQt5自带教程中,地址簿(address book)程序没有完全实现界面与业务逻辑分离. 本文我打算用eric6+PyQt5对其进行改写,以实现界面与逻辑完全分离. [概览] 1.界面: 2.功能简介:程序有三种操作模式:浏览模式.添加模式.编辑模式. 其实现的功能都显式的体现在各个按钮上 3.主要步骤:1).在eric6中新建项目,新建窗体,取名为 addressbook.ui 文件 2).(自动打开)进入PyQt5 Desinger,编辑图形界面,保存 3).回到eric 6

In this problem, your job to write a function to check whether a input string is a valid IPv4 address or IPv6 address or neither. IPv4 addresses are canonically represented in dot-decimal notation, which consists of four decimal numbers, each ranging

In this problem, your job to write a function to check whether a input string is a valid IPv4 address or IPv6 address or neither. IPv4 addresses are canonically represented in dot-decimal notation, which consists of four decimal numbers, each ranging

URL: http://lite.ip2location.com/ Use the code below to convert the IP address of your web visitors and lookup for their geographical location, e.g. country, state, city, latitude/longitude, ZIPs, timezone and so on. Free database can be downloaded a

php 5.4中的traits,是新引入的特性,中文还真不知道如何准确翻译好.其实际的目的, 是为了有的场合想用多继承,但PHP又没多继承 ,于是就发明了这样的一个东西. Traits可以理解为一组能被不同的类都能调用到的方法集合,但Traits不是类!不能被实例化.先来例子看下语法: trait myTrait{function traitMethod1(){}function traitMethod2(){}}//然后是调用这个traits,语法为:class myClass{use myT

3 registers for starting pos: LDTR, GDTR( register for starting addr of DT) ---段描述符每个段由一个8字节(64位)的段描述符来描述,他表示段的各项属性.段描述符放在叫全局描述符表(Global Descriptor Table:GDT )或局部描述符表(Local Descriptor Table:LDT)中.GDT和LDT可以理解为数组.而段选择符里的索引是用于选择在这个数组当中的元素.如:GDT[index],表

Why do we need it, whatever it is? VM unicast, multicast and broadcast traffic flow is detailed in my previous post: Tunnels in Openstack Neutron Agent OVS flow tables implement learning. That is, any unknown unicast destination (IE: MAC addresses th

# /etc/init.d/httpd startStarting httpd: (98)Address already in use: make_sock: could not bind to address [::]:80(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80no listening sockets available, shutting downUnable to open lo

https://4sysops.com/archives/ipv6-tutorial-part-5-address-types-and-global-unicast-addresses/ In my last post in the IPv6 series, you learned the IPv6 address syntax. Today, I will introduce the different types of IPv6 addresses. IPv6 address types T

  原文  http://resources.infosecinstitute.com/system-address-map-initialization-x86x64-architecture-part-2-pci-express-based-systems/   This article is the second part of a series that clarifies PCI expansion ROM address mapping to the system address m

一般网页中会有一些网站的联系地址信息需要在网页中展示出来,这些联系地址信息如公司的地址就可以<address>标签.也可以定义一个地址(比如电子邮件地址).签名或者文档的作者身份. 语法: <address>联系地址信息</address> 如: <address>文档编写:lilian 北京市西城区德外大街10号</address> <address> 本文的作者:<a href="mailto:lilian@imo