UdpSocket::send seems to set the ip to 0.0.0.0

[Alidro]

Hello there!
I just got into the Network module of sfml. i wanted to create a small game so i used UdpSocket.
Sadly i havent been able to send anything properly and after some Investigation i noticed my ip address is set to 0.0.0.0 after i use  .send(). In this case i use , just to test it, the same ip address for both Client and Server. Heres the Code:

#include <iostream>
#include <SFML\Graphics.hpp>
#include <SFML\Network.hpp>

using namespace sf;

int main()
{
        UdpSocket socket;
        IpAddress ip= IpAddress::getLocalAddress();
        Packet packet;
        unsigned short port = 1234;
        RectangleShape player1;
        RectangleShape player2;
        char sc;
        Vector2f player2pos;
        player1.setSize(Vector2f(20, 20));
        player2.setSize(Vector2f(20, 20));
        player1.setFillColor(Color::Blue);
        player2.setFillColor(Color::Red);
        std::cout << "[s] server, [c]client" << std::endl;
        std::cin >> sc;
        if (sc == 'c')
        {
                std::cout << "Server ip address" << std::endl;
                //std::cin >> ip;
                socket.bind(1235);

        }
        if (sc == 's')
        {
                socket.bind(1234);
        }

        bool update = false;
       
        socket.setBlocking(false);

        RenderWindow window(VideoMode(800, 600), "Window");
        while (window.isOpen())
        {
                if (sc == 'c')
                {
                        packet << player1.getPosition().x << player1.getPosition().y;

                        if (socket.send(packet, ip, 1234))
                                std::cout << "client sent data to " << ip.toString() << std::endl;
                        socket.receive(packet, ip, port);
                        packet >> player2pos.x >> player2pos.y;
                }
                if (sc == 's')
                {
                        if (socket.receive(packet, ip, port))
                                std::cout << "recieved data from " << ip.toString()  << std::endl;
                        packet >> player2pos.x >> player2pos.y;
                        packet << player1.getPosition().x << player1.getPosition().y;
                        socket.send(packet, ip, 1235);
                }
                Event event;
                while (window.pollEvent(event))
                {
                        if (event.type == Event::Closed)
                        {
                                window.close();
                        }
                        else if (event.type == Event::GainedFocus)
                        {
                                update = true;
                        }
                        else if (event.type == Event::LostFocus)
                        {
                                update = false;
                        }
                }


                if (update)
                {
                        if (Keyboard::isKeyPressed(Keyboard::A))
                                player1.move(-1.f, 0.f);
                        else if (Keyboard::isKeyPressed(Keyboard::D))
                                player1.move(1.f, 0.f);
                        else if (Keyboard::isKeyPressed(Keyboard::S))
                                player1.move(0.f, 1.f);
                        else if (Keyboard::isKeyPressed(Keyboard::W))
                                player1.move(0.f, -1.f);
                }
                player2.setPosition(player2pos);

                window.clear();
                window.draw(player1);
                window.draw(player2);
                window.display();
        }
        return 0;
}

[eXpl0it3r]

bind() by default binds to the IP sf::IpAddress::Any which is 0.0.0.0.
receive() doesn't "receive" data on the passed IP address, but will set the IP address of the peer that sends data and since we're in non-blocking mode and thus the function returns immediately, the IP address is default constructed to 0.0.0.0. It's bind() that tells the server on what interface to listen on, which in most case you want to be 0.0.0.0 (all interfaces).

[Alidro]

Thank you, now it works.