How to get the current ip address in C++

Question

Possible Duplicate:
get global ip address

I am wondering is there anyway to get the ipv4 address easily?

@user705414: What platform are you using? Linux/Unix/Windows? — Alok Save, May 18 '11 at 05:55
Every computer has an IPv4 address of 127.0.0.1. Can you use that? — Gabe, May 18 '11 at 05:55
Each network adapter (physical and virtual) can have multiple IP addresses, so you need to specify your requirement better. It also depends on the OS you use. — ChrisWue, May 18 '11 at 05:57

score 2 · Answer 1 · edited May 23 '17 at 12:26

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For the local computer:

Get the IP address of the machine

edited May 23 '17 at 12:26

Community

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answered May 18 '11 at 05:57

Brian Webster

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score 1 · Answer 2 · answered May 18 '11 at 06:06

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It depends on the OS your program running on.

For Windows see http://msdn.microsoft.com/en-us/library/aa365915%28v=VS.85%29.aspx

answered May 18 '11 at 06:06

Liu Yongtai

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If you want the regular IPv4 address, you should access the unicast address value. – David Gausmann Oct 27 '16 at 16:10

score 0 · Answer 3 · answered May 18 '11 at 06:03

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Try Beej's Guide to Network Programming at http://beej.us/guide/bgnet/

There you may find an answer for your platform and the case of multiple addresses.

answered May 18 '11 at 06:03

Mario

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score 0 · Answer 4 · answered May 18 '11 at 06:07

Actually C++ standard library does not provide any function to get the ip address of a system. The api for that must be provided by the OS on which you are working.

From your question what I understood is you are working on something but your IP keep changing because it is assigned by DHCP, well I may be wrong.

However, for linux you would like to google for inet_ntop

Check this out:
#include <arpa/inet.h> const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);

How to get the current ip address in C++

4 Answers4