ip-address

问题 I have been working on an application where when a person logs into an account, the IP address of the device is stored in the backend and local storage. Then when a person logs into the same account from another browser or so, it will show a popup with the last login IP address. It seems to work on chrome and Mozilla but not working in edge browser. It always returns null because it's not entering the code after pc.createDataChannel. The code snippet is as below. const getIpAddress = state =>

问题 For software I am developing, I need to have a list of external IP addresses that Google App Engine uses for urlFetch requests. Getting a complete list is proving difficult. The accepted wisdom as detailed on SO is to use the output from... dig -t txt _netblocks.google.com ...but unfortunately this list is incomplete. For example, my urlFetch requests currently emerge from unlisted addresses: US based App: 8.35.201.x EU based App: 8.35.200.x Is there any way to get an actively updated list of

问题 My iPhone application includes several http requests to a server. The server's IP address can be entered by the user so you can use the app in combination with your own private server. Before making the requests I always check whether or not the IP address entered is valid and I do it like this: -(BOOL)urlExists { NSString *url = [NSString stringWithFormat:@"%@", ipAddress]; NSURLRequest *myRequest1 = [NSURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy

问题 What regex can I use to match any valid IP-address represented in dot-decimal notation? 回答1: CPAN is your friend: Regex::Common or Net::IP::Match::Regexp. 回答2: if($ip=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255 && $2<=255 && $3<=255 &&$4<=255 ))) { print "valid\n"; } else { print "Invalid\n"; } 回答3: I like this one ... pretty much as Steve Hajducko's but using quoted reg ex which rooooock! my $ip = '120.140.255.254'; # for example my $ipno = qr/ 2(?:5[0-5] | [0-4]\d) | 1\d\d |

问题 How to validate an IP address in Objective-C? 回答1: Here's a category using the modern inet_pton which will return YES for a valid IPv4 or IPv6 string. #include <arpa/inet.h> @implementation NSString (IPValidation) - (BOOL)isValidIPAddress { const char *utf8 = [self UTF8String]; int success; struct in_addr dst; success = inet_pton(AF_INET, utf8, &dst); if (success != 1) { struct in6_addr dst6; success = inet_pton(AF_INET6, utf8, &dst6); } return success == 1; } @end 回答2: Here's an alternative

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . Recently i was asked a question in an interview which i couldn't do. Anyone got a solution for this? Grab all connected IP´s on the Linux machine check every connected IP if TCP port 1706 is open if its open >

问题 i have a client server application in MFC using UDP where the server displays the IP address of connected clients in a listbox. If i run the client and server on the same computer the program displays the MAC address but if i try to run the client on a different computer the program crashes . Here are the 3 functions. I have an event handler for the listbox that displays the MAC address in a second listbox when an IP address is selected. PrintMACFromIP is the code for getting the MAC address

问题 I stored the following IPs in an array: 10.2.3.1 10.2.3.5 10.2.3.10 - 10.2.3.15 I'm trying to count the total number of IP addresses. The total number of IP addresses should be 8. When I iterate through the array, I get a total of three counts. I need a way to count the third item: 10.2.3.10 - 10.2.3.15 Are there any IP address counters? 回答1: If you need to convert an IP to a range, you'll need a function that converts an IPv4 value to an integer, then do math on those: require 'ipaddr' def

问题 Get the server name and ip address in C# 2010 I want to get the IP address of the server. The following code comes from: public static void DoGetHostEntry(string hostname) { IPHostEntry host; host = Dns.GetHostEntry(hostname); MessageBox.Show("GetHostEntry({0}) returns:"+ hostname); foreach (IPAddress ip in host.AddressList) { MessageBox.Show(" {0}"+ ip.ToString()); } } This code must know the name of the server computer. AddressFamily in System.Net.IPAddress System.Net.IPAddress i; string

问题 I am new to PHP and keen to learn and I was wondering if people could please let me know how to obtain phpinfo information, specifically under the Apache Environment, the variable REMOTE_ADDR? I basically provide a user with a url to a partcular website, which ultimately returns them a csv file where they can either save/delete or cancel. On the same URL, I was wondering if I can call a PHP function to obtain this information or even better, call the variable directly from the URL? Any