serenity/Kernel/IPv4Socket.h

#pragma once

#include <Kernel/Socket.h>
#include <Kernel/DoubleBuffer.h>
#include <Kernel/IPv4.h>
#include <AK/Lock.h>
#include <AK/SinglyLinkedList.h>

class IPv4Socket final : public Socket {
public:
    static Retained<IPv4Socket> create(int type, int protocol);
    virtual ~IPv4Socket() override;

    static Lockable<HashTable<IPv4Socket*>>& all_sockets();

    virtual KResult bind(const sockaddr*, socklen_t) override;
    virtual KResult connect(const sockaddr*, socklen_t) override;
    virtual bool get_address(sockaddr*, socklen_t*) override;
    virtual void attach_fd(SocketRole) override;
    virtual void detach_fd(SocketRole) override;
    virtual bool can_read(SocketRole) const override;
    virtual ssize_t read(SocketRole, byte*, ssize_t) override;
    virtual ssize_t write(SocketRole, const byte*, ssize_t) override;
    virtual bool can_write(SocketRole) const override;
    virtual ssize_t sendto(const void*, size_t, int, const sockaddr*, socklen_t) override;
    virtual ssize_t recvfrom(void*, size_t, int flags, const sockaddr*, socklen_t) override;

    void did_receive(ByteBuffer&&);

    Lock& lock() { return m_lock; }

private:
    IPv4Socket(int type, int protocol);
    virtual bool is_ipv4() const override { return true; }

    bool m_bound { false };
    int m_attached_fds { 0 };
    IPv4Address m_peer_address;

    DoubleBuffer m_for_client;
    DoubleBuffer m_for_server;

    SinglyLinkedList<ByteBuffer> m_receive_queue;

    Lock m_lock;
    bool m_can_read { false };
};