ip-address

问题 I have this sample code for converting 32 bit integers to ip addresses. #include <stdio.h> int main() { unsigned int c ; unsigned char* cptr = (unsigned char*)&c ; while(1) { scanf("%d",&c) ; printf("Integer value: %u\n",c); printf("%u.%u.%u.%u \n",*cptr, *(cptr+1), *(cptr+2), *(cptr+3) ); } } This code gives incorrect output for input 2249459722 . But when i replace scanf("%d",&c) ; by scanf("%u",&c) ; The output comes out to be correct. P.S : I know about inet_ntop and inet_pton . I expect

问题 How would I go about finding the external IP of a user in C++? I need a method that would work for any system, not just mine. Additionally, the system could be behind a router, thus NAT would come into play making it harder to retrieve the external IP. Ideally, I'd like to do this without using any 3rd party service like whatsmyip. However, I'm not sure if this is possible. If I don't use a 3rd party service, I'd have to go through the router and if ping is disabled I'm guessing this might

问题 I have an requirement where i need to supply IP address and Port number of currently Connected Wifi network. I am getting IP address using WifiInfo class having getIpAddress() method. But i am not able to get Port number.. Kindly provide an appropriate solution../ 回答1: Portnumber of Wlan? You are dooing right by using the WifiManager. There is no WLAN port that's why you can't get the portnumber. 来源： https://stackoverflow.com/questions/14749497/how-to-get-port-number-of-wifinetwork-active

问题 This question already has answers here : bit-wise operation unary ~ (invert) (5 answers) Closed 2 years ago . i'm trying to calculate broadcast address by logic OR and NOT with specified ip and mask, but the func return me smth strange. Why? IP = '192.168.32.16' MASK = '255.255.0.0' def get_ID(ip, mask): ip = ip.split('.') mask = mask.split('.') ip = [int(bin(int(octet)), 2) for octet in ip] mask = [int(bin(int(octet)), 2) for octet in mask] subnet = [str(int(bin(ioctet & moctet), 2)) for

问题 There are several email servers refusing connections of clients with public dynamic IP addresses. For example many smtp servers receiving emails only accept connections to clients having static IP adresses to avoid spam emails which are directly sent from computers having dynamic IP addresses. When I looked for answers using google I only found information saying it is impossible to distinguish between static/dynamic addresses. So how do the email servers do it? Are there any databases

问题 We have a requirement to get the printer IP Address configured in the default printer driver in Control Panel in our UWP app. I was able to retrieve the " System.DeviceInterface.PrinterPortName " by fetching interface class GUID and passing this above property for retrieval. But I couldn't get "System.Devices.IpAddress" similarly. Code pasted below for PortName. I badly need the IP address as the port name is user's choice and could be modified to any name removing the IP address. Kindly help

问题 I've got a spreadsheet of about 5000 user events associated with IPs, and I'm trying to use IP to determine location using just an Excel formula. The IPs in my log are structured as "dotted quads" (decimal notation). I figured VLOOKUP is the way to go here, so I downloaded WEBNet77's IPV4 IpToCountry database, which seems like a comprehensive and up-to-date resource (is there a better resource out there for this purpose?). The database includes about 140K rows of IP ranges, with the sheet

问题 I'm trying to configure a Spark cluster using OpenStack. Currently I have two servers named spark-master (IP: 192.x.x.1, floating IP: 87.x.x.1) spark-slave-1 (IP: 192.x.x.2, floating IP: 87.x.x.2) I am running into problems when trying to use these floating IPs vs the standard public IPs. On the spark-master machine, the hostname is spark-master and /etc/hosts looks like 127.0.0.1 localhost 127.0.1.1 spark-master The only change made to spark-env.sh is export SPARK_MASTER_IP='192.x.x.1' . If

问题 I want to obtain the ip address of the the wifi router to which my android phone is connected? I know that we can get the mac/BSSId and SSID by using the android APIS but I don't find the way to find the way to find the ip address of it? I found the code for obtaining the ip address of phone owns wifi router WifiManager myWifiManager = (WifiManager) getSystemService(WIFI_SERVICE); WifiInfo myWifiInfo = myWifiManager.getConnectionInfo(); int ipAddress = myWifiInfo.getIpAddress(); System.out

问题 Is there a good IP Mask plugin for JQuery? I've tried Masked Input Plugin but it doesn't IP Addresses with less than 12 digits. Then I've tried meioMask and this doesn't work with less than 12 digits either. Any suggestions? 回答1: You can find your answer in this post : http://mlntn.com/2009/12/30/jquery-ip-address-plugin/ and a demo for you to try http://mlntn.com/demos/jquery-ipaddress/ 回答2: This is an older post however for someone who wants an easy way to manipulate multiple inputs,