介绍一个我几年前做的小工具 EzDig
cn·@oflyhigh·
0.000 HBD介绍一个我几年前做的小工具 EzDig
和网络打交道就很难离开域名解析系统,至少目前看起来是这个样子的。 我在这篇文章 * [使用HE.NET的Dynamic DNS](https://steemit.com/cn/@oflyhigh/he-net-dynamic-dns) 中简单地介绍过域名解析系统: >简单的讲,互联网的主机靠IP来区分,要访问一台主机上的服务(HTTP、 FTP、EMAIL、DATABASE等)我们首先要知道对方的IP地址。但是互联网的主机千千万,抽象的IP地址根本无法记忆,而域名就是给这个地址起一个好记的名字。所以,我们就可以通过www.baidu.com这样的域名来访问到百度,通过www.taobao.com这样的域名来访问到淘宝。 >而从域名到IP的过程,就是域名解析,是由域名解析服务器(Name Server)来完成的。 其实DNS不单单可以干域名到IP的事情,还可以干好多事情,比如CNAME,给域名整个别名,MX设置域名的邮件交换记录等等。Windows比较常用的和DNS相关当属nslookup了,当时使用起来相当不便,尤其是对我这种记忆力不好的人而言。大多时候涉及域名解析的,我都用ping来测试,但是ping只能测试A记录,并且涉及DNS缓存的问题。Linux系统上dig的功能就强大好多了,但是一则要去Linux下操作,二则要命令行还是不如图形界面方便。于是大概在2011年前后,我就有个想法,写一个桌面域名查询工具,方便自己使用。 说起来容易,做起来很难,尤其是对我这种编程菜鸟而言。 域名解析涉及好多内容,为了实现我想要的功能,我仔细学习了下列文档 * [Domain Name System (DNS) Parameters](http://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml) * [RFC 1034: DOMAIN NAMES - CONCEPTS AND FACILITIES](https://tools.ietf.org/html/rfc1034) * [RFC 1035: Domain Names - Implementation and Specification](https://tools.ietf.org/html/rfc1035) * [RFC 3596: DNS Extensions to Support IP Version 6](https://tools.ietf.org/html/rfc3596) * [RFC 4291: IP Version 6 Addressing Architecture](https://tools.ietf.org/html/rfc4291) * [RFC 3596: A Recommendation for IPv6 Address Text Representation](https://tools.ietf.org/html/rfc5952) (实际上学习的比这要多,基本上每条记录都涉及一个RFC,但是时隔太久,都忘记了) 然后不断尝试和调试,终于实现了我期望的诸多功能。 外观有点难看  支持的查询类型  为了方便,我在程序中内置了一些DNS服务器  我将这个程序发布到http://download.cnet.com 以及 http://www.softpedia.com * http://download.cnet.com/EzDig/3000-2085_4-75689668.html * http://www.softpedia.com/get/Network-Tools/IP-Tools/EzDig.shtml 从这两个站,大概过来一万次左右的下载吧。 并且收到一些热心用户的反馈,比如一个国外大学计算机系的教授,用我这个程序给学生们讲解DNS系统,并给我发了一封邮件说我界面上的***recuse***拼错了,应该是***recurse***,看了一下,我还没有改过来,惭愧。另外最兴奋的莫过于softpedia.com 的编辑,给我的软件写了个Review,并给了这款软件五星好评,真是受宠若惊啊。  还写了几篇博客,介绍一些相关内容 * [How to Use Ezdig to Determine the Version of BIND](http://blog.eztk.com/server-management/dns/2012/how-to-use-ezdig-to-determine-the-version-of-bind/) * [How To Hide BIND DNS Sever Version](http://blog.eztk.com/server-management/dns/2012/how-to-hide-bind-dns-sever-version/) * [How to convert an ipv6 address to its standard text presentation under Windows XP](http://blog.eztk.com/programing/2012/how-to-convert-an-ipv6-address-to-its-standard-text-presentation-under-windows-xp/) 在这之后把这款软件升级到了3.0版本,加入了DNSSEC,递归查询等支持  但是后来忙于工作,就懒得去两个下载站发布了,博客也懒得写了。 一晃过了5年多,好多技术细节我都忘记的一干二净了。 但是这个工具基本每天都会用到。 前两天看IPFS的介绍,号称要颠覆HTTP,还有个IPNS子系统,域名解析系统也要被颠覆啦。吓得我赶紧写篇文章记录一下。以后回忆起来,可以和人说,在那个还用HTTP以及DNS的上古时代,我还曾经做过一个垃圾小工具呢。😭
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