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#pragma once
#include <Kernel/Net/IPv4Socket.h>
class TCPSocket final : public IPv4Socket {
public:
static Retained<TCPSocket> create(int protocol);
virtual ~TCPSocket() override;
enum class State
{
Disconnected,
Connecting,
Connected,
Disconnecting,
};
State state() const { return m_state; }
void set_state(State state) { m_state = state; }
void set_ack_number(dword n) { m_ack_number = n; }
void set_sequence_number(dword n) { m_sequence_number = n; }
dword ack_number() const { return m_ack_number; }
dword sequence_number() const { return m_sequence_number; }
void send_tcp_packet(word flags, const void* = nullptr, int = 0);
static Lockable<HashMap<word, TCPSocket*>>& sockets_by_port();
static TCPSocketHandle from_port(word);
private:
explicit TCPSocket(int protocol);
virtual const char* class_name() const override { return "TCPSocket"; }
static NetworkOrdered<word> compute_tcp_checksum(const IPv4Address& source, const IPv4Address& destination, const TCPPacket&, word payload_size);
virtual int protocol_receive(const ByteBuffer&, void* buffer, size_t buffer_size, int flags, sockaddr* addr, socklen_t* addr_length) override;
virtual int protocol_send(const void*, int) override;
virtual KResult protocol_connect(FileDescriptor&, ShouldBlock) override;
virtual int protocol_allocate_local_port() override;
virtual bool protocol_is_disconnected() const override;
virtual KResult protocol_bind() override;
dword m_sequence_number { 0 };
dword m_ack_number { 0 };
State m_state { State::Disconnected };
};
class TCPSocketHandle : public SocketHandle {
public:
TCPSocketHandle() {}
TCPSocketHandle(RetainPtr<TCPSocket>&& socket)
: SocketHandle(move(socket))
{
}
TCPSocketHandle(TCPSocketHandle&& other)
: SocketHandle(move(other))
{
}
TCPSocketHandle(const TCPSocketHandle&) = delete;
TCPSocketHandle& operator=(const TCPSocketHandle&) = delete;
TCPSocket* operator->() { return &socket(); }
const TCPSocket* operator->() const { return &socket(); }
TCPSocket& socket() { return static_cast<TCPSocket&>(SocketHandle::socket()); }
const TCPSocket& socket() const { return static_cast<const TCPSocket&>(SocketHandle::socket()); }
};
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