ip-address

问题 I want to do two things: Convert IP Address inputs into CIDR Here are some example inputs: 1.1.1.1 192.168.*.* #=> 192.168.0-255.0-255 192.168.1.2-20 1.1.1-10.1-100 Check if a given IP Address falls into any CIDR. This must be a very fast query, as it's a very common lookup in my web app. I'm thinking of doing something like this: def matches?(request) valid = @ips.select {|cidr| cidr.contains?(request.remote_ip) } !valid.empty? end I think converting IP ranges into CIDR will let lookups be

问题 Well the title basically says it. But for more info . . This method works but . . $ip = '1.1.1.1'; curl_setopt($handle, CURLOPT_HTTPHEADER, array("REMOTE_ADDR: $ip", "X_FORWARDED_FOR: $ip")); It only adds these two keys on the $_SERVER array HTTP_REMOTE_ADDR HTTP_X_FORWARDED_FOR The key REMOTE_ADDR still remains the same. Can REMOTE_ADDR be changed? The answer here says NO . But a comment also says It may, however, NOT be the user's real IP address because it may be hidden by proxies and

问题 Well the title basically says it. But for more info . . This method works but . . $ip = '1.1.1.1'; curl_setopt($handle, CURLOPT_HTTPHEADER, array("REMOTE_ADDR: $ip", "X_FORWARDED_FOR: $ip")); It only adds these two keys on the $_SERVER array HTTP_REMOTE_ADDR HTTP_X_FORWARDED_FOR The key REMOTE_ADDR still remains the same. Can REMOTE_ADDR be changed? The answer here says NO . But a comment also says It may, however, NOT be the user's real IP address because it may be hidden by proxies and

问题 Is there an easy way in Ruby for me to get a list of the IP addresses for all network interfaces? It needs to work in Linux/Win/OSX and I'd prefer to not have to parse ifconfig/ipconfig unless I absolutely have to. 回答1: As of Ruby 2.1, Socket#getifaddrs is available: 001:0> require 'socket' => true 002:0> Socket.getifaddrs.map { |i| i.addr.ip_address if i.addr.ipv4? }.compact => ["127.0.0.1", "192.168.1.121", "192.168.1.181"] 回答2: Check out the following post: http://coderrr.wordpress.com

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 How can I find out whether a given IP address is an official internet address or an internal intranet IP address? 回答1: Intranet IP's are often in the private IP range: 10.0.0.0 through 10.255.255.255 172.16.0.0 through 172.31.255.255 192.168.0.0 through 192.168.255.255 These are not usable for internet IP addresses. See also http://compnetworking.about.com/od/workingwithipaddresses/f/privateipaddr.htm 回答2: 10.0.0.0 - 10.255.255.255` (10.0.0.0/8, former Class A) 172.16.0.0 - 172.31.255.255`

问题 I'm new to Docker. Is it possible to assign an IP address (from a DHCP server) to Docker containers running on a host or VM? If yes, can someone point me in the correct direction. If no, is it a fundamental limitation of the container approach or it's just a feature that's not in Docker yet. 回答1: Caveat - Docker is under heavy development so confirming against current docs is advisable. The network element is one of those under current discussion on docker-dev , it looks like longer term

问题 I am trying to configure webhooks in github so that it will deploy every time I do a new push, I have added web hooks in github and given the address of jenkins which is http://localhost:8080/github-webhook/ but it did not work and I found out that we need to find our IP address and I added it as follows: http://'ipaddress'/github-webhook/ but I still did not get the jenkins to work? Thanks 回答1: You need a public address for Github to point to when detected a push request. localhost is on

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I have thousands of IP addresses of visitors to my site, what tools can I use to convert these into lat/lng coordinates? I will then be able visualise the data on a map with filters for further demographics gathered. 回答1: For one of my sites I made use of maxmind's free geolite country database which can be