Getting Local IP of current machine (internet sockets)

[md_lasalle]

Hi!

I'm doing some application in C/C++ using pure berkeley sockets.

I want to know, what is the best way to get the adress from the current local machine, right now what I do is returning me 127.1.1.0, i want to have 192.168.0.100 for insntace

i gethostname() -> gives me my computer name ( marcd-linuxbox )
and then i create a hostent struct with the gethostbyname()

it works on Windows machine, probably because Windows is dumb, i found it more logical to have something like 127.0.0.1 or something like that returned. But i really need to find a way to get this local IP for my local network broadcast thingy.

Thanks for any help

[md_lasalle]

ok i managed to find this talking about ioctl() function and i managed to get that the second interface returned 192.168.0.102 like i wanted

But this brings me to another question, how can i know if the second interface will always return the right local adress, as the first one currently returns 127.0.0.1

[Skiboy]

ifconfig -a


This gives all the IP ethernet addresses on the machine.

[md_lasalle]

ifconfig -a


This gives all the IP ethernet addresses on the machine.

Yes but not inside a C program, thats why i had to use the ioctl() function

[nyache]

Yes but not inside a C program, thats why i had to use the ioctl() function

hi md_lasalle,

now..i'm facing the same problem with you. Can u teach me how to use the ioctl() function in C program.

tq