socket.h

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// Luanti
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
#pragma once
 
#include "irrlichttypes.h"
#include "address.h"
 
void sockets_init();
void sockets_cleanup();
 
class UDPSocket
{
public:
        UDPSocket() = default;
        UDPSocket(UDPSocket &&other):
                m_handle(other.m_handle),
                m_timeout_ms(other.m_timeout_ms),
                m_addr_family(other.m_addr_family)
        {
                other.m_handle = -1;
        }
        ~UDPSocket()
        {
                Close();
        }
        UDPSocket &operator=(UDPSocket &&other)
        {
                Close();
                m_handle = other.m_handle;
                m_timeout_ms = other.m_timeout_ms;
                m_addr_family = other.m_addr_family;
                other.m_handle = -1;
                return *this;
        }

        static UDPSocket Create(Address addr)
        {
                UDPSocket socket;
                socket.Bind(addr);
                return socket;
        }
 
        static UDPSocket CreateEphemeral(bool ipv6)
        {
                if (ipv6)
                        return Create(Address(nullptr, 0));
                else
                        return Create(Address(u32(0), 0));
        }
 
        void Init(bool ipv6);
        void Bind(Address addr);
        void Close();
 
        Address GetLocalAddress();
 
        void Send(const Address &destination, const void *data, int size);
        // Returns -1 if there is no data
        int Receive(Address &sender, void *data, int size);
        void setTimeoutMs(int timeout_ms);
        // Returns true if there is data, false if timeout occurred
        bool WaitData(int timeout_ms);
 
        // Debugging purposes only
        int GetHandle() const { return m_handle; };
 
private:
        int m_handle = -1;
        int m_timeout_ms = -1;
        unsigned short m_addr_family = 0;
};