Your IP. In JSON • Hacker News Board

Re: Your IP. In JSON

#51

Post by callahad » Wed, Mar 02, 2011, 4:18 PM UTC

jjguy wrote: post #28

That's clever and useful. Thanks. I've used http://checkip.dyndns.org for this problem for years, but this is an improvement. Checkip: >>> url = urllib2.urlopen("http://checkip.dyndns.org") >>> url.read() ' Current IP Check Current IP Address: 192.168.0.1 \r\n' Details here: http://www.dyndns.com/developers/checkip.html It's not as easy to parse as JSON, but nor is it very difficult. The format has not changed in yea…

You could also use: http://www.whatismyip.com/automation/n09230945.asp

Re: Your IP. In JSON

#52

Post by there » Wed, Mar 02, 2011, 4:22 PM UTC

if you need geolocation information through javascript, you can use maxmind's free one:

http://j.maxmind.com/app/geoip.js

Re: Your IP. In JSON

#53

Post by clarkevans » Wed, Mar 02, 2011, 5:08 PM UTC

lurchpop wrote: post #2

add a jsonp callback option like http://jsonip.com/?callback=alert

For most modern browsers, you don't need JSONP if you set the Cross-Origin Resource Sharing header, http://www.w3.org/TR/cors/

Re: Your IP. In JSON

#54

Post by webXL » Wed, Mar 02, 2011, 5:18 PM UTC

geuis wrote: post #16

Whoa. I wrote jsonip a few months ago and never expected it to get noticed. What a pleasant surprise! Here's the original post with some usage details. http://news.ycombinator.net/item?id=1896015 This is actually running on node.js. If anyone finds a bug or has some suggestions, email me or leave a tweet @geuis.

Node.js - that was my first guess. Nice example of utility computing!

Re: Your IP. In JSON

#55

Post by cake » Wed, Mar 02, 2011, 6:00 PM UTC

vain wrote: post #49

i am missing something here. why does everyone here seem to think this is cool?

Could anyone list some practical uses ?

Re: Your IP. In JSON

#56

Post by Corrado » Wed, Mar 02, 2011, 6:29 PM UTC

cake wrote: post #55

vain wrote: post #49

i am missing something here. why does everyone here seem to think this is cool?

Could anyone list some practical uses ?

I built some WebSocket code that calls back to the server. I can't hardcode the "server" ip address because I want to deploy it to different places at different times. Sometimes I'm working on my laptop, sometimes its running on Amazon EC2, etc. So, with something like this I am able to build my Javascript so it always knows how to get back to the server.

Re: Your IP. In JSON

#57

Post by metageek » Wed, Mar 02, 2011, 6:34 PM UTC

IgorPartola wrote: post #44

mike-cardwell wrote: post #20

Some suggestions: Make jsonip.com dual stack IPv4/IPv6 and work for IPv6 addresses too. Return some other useful IP information, such as the PTR, the domain name part of the PTR, and the country code and name. Example: https://grepular.com/ipinfo EDIT: Don't use that URL for your own stuff or I'll block it. I only put it there as an example of how the JSON should be returned. EDIT2: Might be useful if it included the…

IPv6 is silly to support. There are no IPv6 NATs, so you should know your IPv6 address.

There shouldn't be IPv6 NATs, but I expect there will be once it actually gets deployed.

Re: Your IP. In JSON

#58

Post by gikrauss » Wed, Mar 02, 2011, 6:38 PM UTC

I think I'll replace whatsmyip.com for this: alias whatsmyip="curl -s http://jsonip.com | grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' -o"

A simple way of accessing your public IP from bash (for some reason I need to do that a lot!)

Re: Your IP. In JSON

#59

Post by burke » Wed, Mar 02, 2011, 6:39 PM UTC

nphase wrote: post #33

Also, icanhazip.com

I'll probably start using this one. Nice short domain name.

Re: Your IP. In JSON

#60

Post by cappaert » Wed, Mar 02, 2011, 6:40 PM UTC

there wrote: post #52

if you need geolocation information through javascript, you can use maxmind's free one: http://j.maxmind.com/app/geoip.js

This is perfect. I've been looking for an easy way to find user location (city, state) based on IP address, without having to scrape a IP lookup service for it.

Great find!