hostname

问题 Can anyone please explain me the difference between Host Name and Canonical Host Name? I am currently using InetAddress class to fetch host name using the IP Address. I came across these 2 APIs. So I am just wondering, which one I should opt for? 回答1: There are a few difference between the two: getCanonicalHostName() will attempt to resolve the FQDN. Therefore, you would get foo.mycompany.com whereas getHostName() might just return foo . getCanonicalHostName() will always do a reverse DNS

问题 Can anyone please explain me the difference between Host Name and Canonical Host Name? I am currently using InetAddress class to fetch host name using the IP Address. I came across these 2 APIs. So I am just wondering, which one I should opt for? 回答1: There are a few difference between the two: getCanonicalHostName() will attempt to resolve the FQDN. Therefore, you would get foo.mycompany.com whereas getHostName() might just return foo . getCanonicalHostName() will always do a reverse DNS

问题 Is there a programatic way to find the domain name from a given hostname? given -> www.yahoo.co.jp return -> yahoo.co.jp The approach that works but is very slow is: split on "." and remove 1 group from the left, join and query an SOA record using dnspython when a valid SOA record is returned, consider that a domain Is there a cleaner/faster way to do this without using regexps? 回答1: There's no trivial definition of which "domain name" is the parent of any particular "host name". Your current

问题 I am trying to set up a secondary azure website in a different subscription. When creating the Custom Hostname for the new site location, I am forced to validate the hostname. Azure complains that the hostname is registered against a different CNAME and prevents me from adding it. This is true, but I don't care, I want this to swap over from the old website to the new one when the DNS records propagate. I the old IIS world, I'd have just added the hostname to two servers and when the dns

问题 I am trying to set up a secondary azure website in a different subscription. When creating the Custom Hostname for the new site location, I am forced to validate the hostname. Azure complains that the hostname is registered against a different CNAME and prevents me from adding it. This is true, but I don't care, I want this to swap over from the old website to the new one when the DNS records propagate. I the old IIS world, I'd have just added the hostname to two servers and when the dns

问题 This sounds like something that should have been asked before, and it has sort of, but I'm looking to get the local hostname and IP addresses of a machine even when it is not resolvable through DNS (in Java). I can get the local IP addresses without resolution by iterating through NetworkInterfaces.getNetworkInterfaces() . Any answers to this question I've found indicate to use getLocalHost() InetAddress localhost = java.net.InetAddress.getLocalHost(); hostName = localhost.getHostName(); but

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . I have given String which contains any valid url. I have to find only name of website from given url. I have also ignore sub domains. like http://www.yahoo.com => yahoo www.google.co.in => google http://in.com => in http://india.gov.in/ => india https://in.yahoo.com/ => yahoo http://philotheoristic

问题 I'm working on a fairly traditional forgot password email - I want to email the user a password change token embedded in a link that they can click on in order to change their password. I'm emailing via the traditional ActionMailer. If I use a normal link_to tag <%= link_to "click here", :controller => foo, :action => 'bar', :token => token %> I get a relative link - rather useless from an email. If I add in :only_path => false , then it errors saying I need to set default_url_options[:host]

问题 I have legacy PHP application. It used mysqli to make mysql things. So in config I have DSN string to connect to mysql service. Like that mysql://username:password@db_hostname/dbname Mysqli returns error Warning: mysqli::real_connect(): php_network_getaddresses: getaddrinfo failed: Name or service not known But if I will try connect by hand using this mysqli::real_connect("db_hostname") It says Warning: mysqli::real_connect(): (HY000/1045): Access denied for user ''@'172.21.0.3' (using

问题 Is there built-in windows C++ function call that can get hostname and IP address? Thanks. 回答1: To get the hostname you can use: gethostname or the async method WSAAsyncGetHostByName To get the address info, you can use: getaddrinfo or the unicode version GetAddrInfoW You can get more information about the computer name like the domain by using the Win32 API: GetComputerNameEx. 回答2: Here is a multiplatform solution... Windows, Linux and MacOSX. You can obtain ip address, port, sockaddr_in,