ip-address

问题 I am currently trying to make a socket connection from my client (iOS simulator) to my host (Genymotion simulator). I am having a hard time finding the correct IP address and configuring the right settings for VirtualBox to get this to work. How can I find the proper IP address and port for iOS to connect to when I host the server on the Genymotion server? 回答1: By default Genymotion devices use a NAT connection to connect to internet. It means they are not visible from your local network. You

问题 I have file with allocated IP address ranges. It looks something like this: ... arin|US|ipv4|8.0.0.0|16777216|19921201|allocated arin|US|ipv4|9.0.0.0|16777216|19881216|assigned apnic|ID|ipv4|122.200.144.0|2048|20061023|allocated apnic|TW|ipv4|122.200.152.0|2048|20080424|allocated apnic|AU|ipv4|122.200.160.0|4096|20061020|allocated apnic|AU|ipv4|122.200.176.0|4096|20110121|allocated apnic|JP|ipv4|122.200.192.0|8192|20061023|allocated ... My question is if it is possible and how to get specific

问题 I am trying to create a Socket "Hello World" program. I would ideally like to create two programs who can exchange simple text, peer-to-peer. I can create a webservice that the peers can post their IP Address to. One peer can then select another to pair up with. If one of the peers is my desktop computer, and the other is my laptop, how can I differentiate the two? 回答1: First of all. If all this is on your local network, without any NAT gateways or similar - it's no big deal. Your server will

问题 I'm developing rails(2.3.8) application. I need to store actual client's remote IP address. request.remote_ip returns only 127.0.0.1 but I need to store actual remote IP such as 93.43.56.77 . Any ruby gems is available? or how do get that? 回答1: Try this: request.env['REMOTE_ADDR'] If your request is coming from your development machine and the development machine is where your server is, probably you will get 127.0.0.1 . But if the request is coming from another machine, this will be the IP

问题 I have the following scenario: IPAddress ip; IPAddress.TryParse("192.168", out ip); if(ip == null){//do something with IP} I would expect the parsing to fail, instead it is parsed as "192.0.0.168". What am I missing here? (IPAddress.Parse works the same) 回答1: From the documentation of Parse: The number of parts (each part is separated by a period) in ipString determines how the IP address is constructed. A one part address is stored directly in the network address. A two part address,

问题 Does anyone knows how to convert decimal notation of an IP address into binary form in Java? Please let me know... 回答1: An IP address written as a.b.c.d can be converted to a 32-bit integer value using shift and bit-wise inclusive OR operators as, (a << 24) | (b << 16) | (c << 8) | d To be safe, each of a,b,c,d has valid range 0-255 -- you can check that in your conversion. You can further validate the IP address using this regex example. 回答2: You can use the java.net.InetAddress class. Two

问题 1, Given a 32-bit integer value, how to exactly determine if it is private IPv4 address. 2, Given a 128-bit integer value, how to exactly determine if it is private IPv6 address. Consider the byte order of the IP address on different platforms, it is error-prone to write such a common little function every time. So I think there should be a library function for this, is there? 回答1: This will get you started. I didn't bother including the "link local" address range, but that's an exercise left

问题 I want to programmatically obtain the IP address of a computer on the LAN, given its hostname. I know from the command line i can do this by ping < hostname >, but how can i do this programmatically in objective-c? Thanks. 回答1: Ok, gethostbyname() always works when trying to find the ip address given a hostname, as long as the hostname of the computer you ae trying to access has its name registered in a DNS Server. All comments and answers above were useful. 来源： https://stackoverflow.com

问题 Is there a way for a java web app to get information on the security certificates installed on one's machine via a http request and selectively grant access if a particular certifiicate is installed on the machine. Basically the requirement is, the web application should entertain request only from a company laptop else must deny access with appropriate error text. (These could be win laptops with certain certifcates installed on their machine or they can be from a certain set of static ips.)

问题 I'm currently looking at different ways to use various web/internet technologies in order to be able to identify and blacklist a user of website rather than the host . If that didn't make much sense, let me explain a little: As you might be aware, some sites (particularly forums and message boards) have the unwelcoming visit of spammers every so often. Obviously forum moderators are able to blacklist any accounts used to do this, but it's what occurs after this that's the problem. In many