Platform-Independent Way to Obtain IP-Address in C++

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Get the IP Address of local computer

I want to be able to get the IP address for the machine I'm on in C++ without querying external www.whatsmyip.com, but also want to do it in a platform-independent way. I can find specific examples for both Windows and Linux, but can't think of an easy way to do this in a platform-independent way. I would also consider options of putting an if-statement in depending on the Operating System if this seems like the best/only method.

It is still unclear to me from the referenced post if there is a platform-independent way. They seem to be either Windows or Linux specific. — cooper, Dec 05 '12 at 19:51
Considering `#ifdef` instead of `if` would be a wiser choice, if you want to do the network programming natively. — πάντα ῥεῖ, Dec 05 '12 at 19:53
@Bart I need just one external IP to communicate with a worker in a general Master-Worker scheme. The IP is used to send the task communication back to the Worker. — cooper, Dec 05 '12 at 20:00

score 2 · Accepted Answer · answered Dec 05 '12 at 19:41

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If you are able to use boost, I highly recommend the boost::asio, which is about as cross-platform as you're going to get.

answered Dec 05 '12 at 19:41

Moo-Juice

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score 1 · Answer 2 · answered Dec 05 '12 at 19:50

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An alternative to boost::asio may be the POCO Network Library.

answered Dec 05 '12 at 19:50

πάντα ῥεῖ

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I know that Boost compiles on Blue Gene/P, but not sure about POCO. One of the systems I am working with is BGP, so I will need the included libraries to cross-compile as well. – cooper Dec 05 '12 at 20:48

Platform-Independent Way to Obtain IP-Address in C++

2 Answers2