dns

问题 I'm using the .NET WebRequest while changing my HOSTS file. I'm observing that System.Net doesn't honor those changes - how can I make it do so? I have a number of servers load-balanced behind a single hostname, let's say 'example.com'. I want to target several of them individually, so my program will hard-code the machine-specific IP address in my HOSTS file before sending a request to example.com: 163.56.0.34 example.com For the first server and first request, this works fine. Then my

问题 I want to get domain name only using javascript. Ex vn.search.yahoo.com -> yahoo vn.search.yahoo.com.vn -> yahoo sub1.sub2.sub3.abcdef.co.uk -> abcdef Thank you! Edit: "domain" = domain without extension (ex: .com, .net, .co.uk...) and without sub domain (ex: www, email, cdn, support...) 回答1: Use location.host and cut off subdomains and the TLD: var domain = (location.host.match(/([^.]+)\.\w{2,3}(?:\.\w{2})?$/) || [])[1] update : as @demix pointed out, this fails for 2 and 3-letter domains.

问题 There is a website which you can query with a domain and it will return a list of all the websites hosted on that IP. I remember there being a method in C# that was something like ReturnAddresses or something of that sort. Does anyone have any idea how this is done? Quering a hostname or IP and having returned a list of hostnames aka other websites hosted on the same server? the website is: http://www.yougetsignal.com/tools/web-sites-on-web-server/ 回答1: After reading the comments, bobince is

问题 For example, when we connect to www.example.com , at first we try to connect to 192.0.2.1 . And if first try fails, then we try 192.0.2.222 . Is it possible? Can we register multiple backup IP addresses for one domain name? 回答1: This is round robin DNS. This is a quite simple solution for load balancing. Usually DNS servers rotate/shuffle the DNS records for each incoming DNS request. Unfortunately it's not a real solution for fail-over. If one of the servers fail, some visitors will still be

问题 $ rvm use Using /home/owner/.rvm/gems/ruby-2.1.2 $ gem install rails ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError) Errno::ECONNREFUSED: Connection refused - connect(2) for "your-dns-needs-immediate-attention.network" port 80 (http://your-dns-needs-immediate-attention.network/quick/Marshal.4.8/thread_safe-0.3.4.gemspec.rz) $ gem update --system ... $ gem -v 2.4.1 $ gem install rails ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError) Errno::ECONNREFUSED:

问题 $ rvm use Using /home/owner/.rvm/gems/ruby-2.1.2 $ gem install rails ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError) Errno::ECONNREFUSED: Connection refused - connect(2) for "your-dns-needs-immediate-attention.network" port 80 (http://your-dns-needs-immediate-attention.network/quick/Marshal.4.8/thread_safe-0.3.4.gemspec.rz) $ gem update --system ... $ gem -v 2.4.1 $ gem install rails ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError) Errno::ECONNREFUSED:

问题 I am using "www.xip.io" as a DNS wildcard for testing on different devices. I set my primary domain to my IP address. I fire up a rails server with bundle exec rails server and I go here www.<ip_address>.xip.io:3000 and notice my rails server doesn't respond. However, if I bind my rails server to 0.0.0.0 like so bundle exec rails server -b 0.0.0.0 , it works! I don't understand what 0.0.0.0 is telling my server for this to work. Can someone make sense of this? 回答1: Binding to 0.0.0.0 tells

问题 I am using "www.xip.io" as a DNS wildcard for testing on different devices. I set my primary domain to my IP address. I fire up a rails server with bundle exec rails server and I go here www.<ip_address>.xip.io:3000 and notice my rails server doesn't respond. However, if I bind my rails server to 0.0.0.0 like so bundle exec rails server -b 0.0.0.0 , it works! I don't understand what 0.0.0.0 is telling my server for this to work. Can someone make sense of this? 回答1: Binding to 0.0.0.0 tells

问题 I want to redirect all of my old domain request to my new domain using htaccess file. Below is what I am using but it does not work if the page is not on the new site. For example google index about.htm on the old site but on the new site it does not exist. I would like it to just go to the root in all cases. I know this is not ideal for seo but I don't want any 404s. Any suggestions? Redirect 301 / http://www.thenewdomain.com/ 回答1: Are you trying to get visitors to old.com/about.htm to go to

问题 I want to redirect all of my old domain request to my new domain using htaccess file. Below is what I am using but it does not work if the page is not on the new site. For example google index about.htm on the old site but on the new site it does not exist. I would like it to just go to the root in all cases. I know this is not ideal for seo but I don't want any 404s. Any suggestions? Redirect 301 / http://www.thenewdomain.com/ 回答1: Are you trying to get visitors to old.com/about.htm to go to