dns

Android - UnknownHost exception when parsing an RSS feed

由 十年热恋 提交于 2019-12-18 09:42:05
问题 I want to parse an rss feed from an android application. Everything related to parsing the RSS feed itself is done (using SAX), however I get an exception regarding the name resolution of the feed's url. This is the line causing the exception: feedUrl = "http://blog.jonathanbenoudiz.com/feed/" feedUrl.openConnection().getInputStream(); java.lang.RuntimeException: java.net.UnknownHostException: So I started investigating my /etc/resolv.conf file and set the nameserver to the dns server of my

How can I verify my custom domain on firebase using GoDaddy

由 人盡茶涼 提交于 2019-12-18 09:25:39
问题 I recently created a project on firebase to host my website and I've transfered my data to their subdomain. But I want to connect my own domain ardacebi.com It gave me a TXT file to save from the DNS Manager but I can't save the file. It gives an error at the main machine part. I put the symbol @ but it ignores it. How can I fix this problem or can you suggest me a website or tutorial (an easy one). Thanks for all your help! 回答1: You need to add the TXT records provided by Firebase in your

Subdomain not working after changing the nameservers

由 我们两清 提交于 2019-12-18 09:22:54
问题 I have hosted my website in Microsoft Azure . I have purchased the domain from register.com . I have used a Linux VM for my project deployment. Suppose my website name is example.com . I have created a sub domain for it called app.example.com It was working fine but its not working when i created a DNS Zone resource in my azure account & updated those nameserver name in my register.com site. 回答1: According to your description, we can follow those steps to setup Azure DNS zone and your domain

什么是DNS

由 懵懂的女人 提交于 2019-12-18 09:14:06
DNS，或者说域名系统，通常是学习如何配置网站和服务器的一个非常困难的部分。了解 DNS 的工作原理将有助于诊断网络访问的问题，也有助于理解 DNS 系统背后的工作原理。 这篇文章中，我们会讨论一些基本的 DNS 概念，这些概念将有助于你配置并使用 DNS。 在我们开始配置你自己的服务器域名解析之前，让我们先来看一些关于这些是如何实现的的基本概念。 我们应该先从 术语 定义开始。虽然有一些术语在谈论计算领域中其它内容时经常出现，但是有许多术语不常使用。 先从简单的开始: 域名系统（Domain Name System） 域名系统（通常被称为“ DNS ”）是一个网络系统，允许我们把对人类友好的名称解析为唯一的地址。 域名（Domain Name） 域名是我们习惯于与互联网资源关联的人性化名称。例如，”google.com” 是一个域名。有些人会说 “google” 部分是域名部分，但我们通常可以将组合形式称为域名。 网址 “google.com” 与 Google Inc. 拥有的服务器相关联。当我们在浏览器中键入 “google.com” 时，域名系统允许我们访问其相关联的 Google 服务器。 IP 地址（IP Address） IP 地址是我们所说的网络可寻址位置。每个 IP 地址在其网络中必须是唯一的。我们这里谈论的网络就是指整个互联网。 IPv4，目前最常见的地址形式

Node.js dns.resolve() vs dns.lookup()

由 ⅰ亾dé卋堺 提交于 2019-12-18 07:37:25
问题 I need to lookup a given host to its corresponding IP in Node.js. There seems to be two native methods of doing this: > dns.resolve('google.com', (error, addresses) => { console.error(error); console.log(addresses); }); QueryReqWrap { bindingName: 'queryA', callback: { [Function: asyncCallback] immediately: true }, hostname: 'google.com', oncomplete: [Function: onresolve], domain: Domain { domain: null, _events: { error: [Function] }, _eventsCount: 1, _maxListeners: undefined, members: [] } }

Code to do a direct DNS lookup

由 夙愿已清 提交于 2019-12-18 07:09:15
问题 I'm thinking of running an experiment to track DNS values in different ways (like how often they change and whatnot). To do this I will need to be able to make a DNS request directly to a server so that 1) I known what server it came from, 2) I can request responses from several servers and 3) I can avoid the local OS run cache. Does anyone know of a library (c#, D, C, C++ in that order of preference) that will let me directly query a DNS server? Failing that, does anyone know of a easy to

How might I perform DNS lookups using C/C++ on Linux?

由 半城伤御伤魂 提交于 2019-12-18 05:45:08
问题 How do I get similar functionality to the host command using a c api (or any other language for that matter)? I need more information than just an IP address given by gethostbyname() ; specifically, the SMTP-related data. 回答1: If a blocking (synchronous) query is ok, just use res_query(), and link your program with -lresolv. len = res_query(host, C_IN, T_MX, &answer, sizeof(answer)); 回答2: I'd suggest FireDNS. It's a very fast C library for all kinds of dns queries. 回答3: I know that the

how to force python httplib library to use only A requests

由 大城市里の小女人 提交于 2019-12-18 05:16:14
问题 The problem is that urllib using httplib is querying for AAAA records. I would like to avoid that. Is there a nice way to do that? >>> import socket >>> socket.gethostbyname('www.python.org') '82.94.164.162' 21:52:37.302028 IP 192.168.0.9.44992 > 192.168.0.1.53: 27463+ A? www.python.org. (32) 21:52:37.312031 IP 192.168.0.1.53 > 192.168.0.9.44992: 27463 1/0/0 A 82.94.164.162 (48) python /usr/lib/python2.6/urllib.py -t http://www.python.org >/dev/null 2>&1 21:53:44.118314 IP 192.168.0.9.40669 >

How to search for users in Global Catalog within AD forest with multiple trees

由 和自甴很熟 提交于 2019-12-18 04:55:17
问题 I have the following AD forest with two trees: Domain1. Has two child domains Domain2 and Domain3 Domain4. Doesn't have child domains. DNS name of the Domain1 is domain1.local . DNS name of the Domain4 is domain4.local . In each domain there is a domain controller with Global Catalog enabled. I'm trying to get UserPrincipal for the user from Domain 4 by its SID. The program runs from a machine in Domain2. I use the following code: // Running on some machine from Domain2 PrincipalContext

Is it possible to detect visitor DNS server?

由 回眸只為那壹抹淺笑 提交于 2019-12-18 04:21:50
问题 Detecting visitor IP is easy. But how about detecting DNS server ips of a visitor ? I found this PHP function, however it finds only domain names' DNS. dns_get_record("website.com", DNS_ANY); Is it possible to detect visitor DNS server ? 回答1: It's not easy, but it can be done. There's a demonstration of the approach suggested in a separate answer by Adam Dobrawy at http://ipleak.net/ To add a bit of detail, the way you can implement something like this is: Part 1 - Set up your own DNS server
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