Author Topic: GetLocalAddress (Read 10736 times)

TheMagicNumber · « **on:** March 07, 2011, 10:17:17 pm »

Whenever I call GetLocalAddress, I get the localhost IP (127.0.0.1), is this normal?

Laurent · « **Reply #1 on:** March 07, 2011, 10:21:44 pm »

No it shouldn't, unless you have a weird network configuration.

What is your actual local network address?

TheMagicNumber · « **Reply #2 on:** March 07, 2011, 10:23:53 pm »

It's 192.168.0.100.

Laurent · « **Reply #3 on:** March 07, 2011, 10:42:49 pm »

Can you show a minimal code that reproduces this problem, just to be sure?

TheMagicNumber · « **Reply #4 on:** March 07, 2011, 10:47:47 pm »

Alright, here:

Code: [Select]

#include <iostream>
#include <SFML/Network.hpp>

int main(int argc, char* argv) {
	std::cout << sf::IpAddress::GetLocalAddress().ToString();
	return 0;
}

Prints "127.0.0.1"

Laurent · « **Reply #5 on:** March 07, 2011, 11:09:52 pm »

What is your OS?

TheMagicNumber · « **Reply #6 on:** March 07, 2011, 11:10:26 pm »

Windows 7 x64

I see you noticed that error of yours, by the way.

Laurent · « **Reply #7 on:** March 07, 2011, 11:18:19 pm »

Everytime I post bullshit, I get caught before I edit my message :lol:

TheMagicNumber · « **Reply #8 on:** March 07, 2011, 11:41:48 pm »

Any ideas? ipconfig gives me the correct information.

Laurent · « **Reply #9 on:** March 08, 2011, 07:31:32 am »

No idea. Maybe you can play with the function's code directly and see if anything's wrong.

TheMagicNumber · « **Reply #10 on:** March 08, 2011, 02:40:14 pm »

All the stuff I found online that works used getaddrinfo() or gethostbyname().

Laurent · « **Reply #11 on:** March 08, 2011, 02:47:30 pm »

Yes, there are other solutions. However getsockname on a local socket should be the best option, I'd like to understand why it fails on your machine (and not on any other Windows PC).

TheMagicNumber · « **Reply #12 on:** March 08, 2011, 03:00:35 pm »

Quote

If the socket is using a connectionless protocol, the address may not be available until I/O occurs on the socket.

From: http://msdn.microsoft.com/en-us/library/ms738543(v=vs.85).aspx

Is this relevant? I would probably assume that the function would return SOCKET_ERROR, though.

Laurent · « **Reply #13 on:** March 08, 2011, 03:06:23 pm »

Hum...

Quote from: "MSDN"

If the socket is using a connectionless protocol, the address may not be available until I/O occurs on the socket.

Can you try to add this, between connect and gethostname?

Code: [Select]

char buffer[] = {0};
send(socket, buffer, 1, 0);

You can copy the function into your code directly if you don't want to recompile SFML. If you do so, you'll have to do the following replacements:

SocketHelper::SocketType --> SOCKET
SocketHelper::InvalidSocket() --> INVALID_SOCKET
SocketHelper::Close --> closesocket

TheMagicNumber · « **Reply #14 on:** March 08, 2011, 03:15:03 pm »

Nope.