AuroraRuntime/Source/IO/Net/AuNetSocket.hpp

/***
    Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: AuNetSocket.hpp
    Date: 2022-8-16
    Author: Reece
***/
#pragma once

#include "AuNetSocketChannel.hpp"
#include "AuNetSocketConnectOperation.hpp"

namespace Aurora::IO::FS
{
    struct FileHandle;
}

namespace Aurora::IO::Net
{
    struct NetInterface;
    struct NetWorker;
    struct SocketBase;
    struct SocketConnectOperation;
    struct SocketServerAcceptReadOperation;
    struct SocketServer;

    struct SocketBase : virtual ISocket, AuEnableSharedFromThis<SocketBase>
    {
        friend struct SocketServerAcceptReadOperation;

        SocketBase(struct NetInterface *pInterface,
                   struct NetWorker *pWorker,
                   const AuSPtr<ISocketDriver> &pSocketDriver,
                   AuUInt osHandle,
                   AuSPtr<ISocketServer> pParent,
                   SocketServer *pParent2);

        SocketBase(struct NetInterface *pInterface,
               struct NetWorker *pWorker,
               const AuSPtr<ISocketDriver> &pSocketDriver,
               const NetEndpoint &endpoint);

        SocketBase(struct NetInterface *pInterface,
                   struct NetWorker *pWorker,
                   const AuSPtr<ISocketDriver> &pSocketDriver,
                   const AuPair<NetHostname, AuUInt16> &endpoint,
                   AuNet::ETransportProtocol eProtocol);

        SocketBase(struct NetInterface *pInterface,
               struct NetWorker *pWorker,
               const AuSPtr<ISocketDriver> &pSocketDriver,
               const NetSocketConnectMany &connectMany);

        virtual ~SocketBase();

        bool TryStartResolve();

        bool ConnectNext();
        bool Connect(const NetEndpoint &endpoint);
        
        AuUInt ToPlatformHandle() override;

        AuSPtr<ISocketDriver> GetUserDriver() override;

        AuSPtr<INetWorker>  GetLockedWorkerThread() override;

        const NetEndpoint &GetRemoteEndpoint() override;
        const NetEndpoint &GetLocalEndpoint() override;

        AuOptional<const NetError &> GetError() override;
        
        AuSPtr<ISocketServer> GetSocketServer() override;

        void ConnectFinished();
        void ConnectFailed(const NetError &error);

        void DoMain();

        void SendErrorNoStream(const NetError &error);
        void SendErrorBeginShutdown(const NetError &error);
        void SendOnData();

        void RejectAllListeners();
        void CompleteAllListeners();

        virtual AuSPtr<ISocketChannel> ToChannel() override;


        virtual void Destroy() override;

        void ShutdownLite();

        INetWorker *ToWorker();
        NetWorker *ToWorkerEx();

        bool SendPreestablish(struct SocketServer *pServer = nullptr);
        void SendEnd();
        void SendFinalize();

        bool IsValid();

        SocketConnectOperation connectOperation;
        
        virtual void UpdateNagleAnyThread(bool bDisableNagle) = 0;

        virtual void FinishConstructAsync() = 0;

        virtual bool PrepareConnectOperations() = 0;
        
        virtual bool MakeNonblocking() = 0;

        virtual bool UpdateLocalEndpoint() = 0;
        virtual bool UpdateRemoteEndpoint() = 0;

        virtual bool TryBindAnyLocal() = 0;

        virtual bool ConnectOverlapped() = 0;
        virtual bool ConnectNonblocking() = 0;
        virtual bool ConnectBlocking() = 0;

        virtual void CloseSocket() = 0;
        virtual void RenewSocket() = 0;

        AuUInt      endpointSize_ {};

        bool bHasFinalized_ {};
        bool bHasEnded {};
        bool bResolving_ {};

    protected:
        AuUInt osHandle_ {};

        friend struct NetWriteQueue;
        friend struct SocketChannelOutput;
        friend struct SocketChannel;

        NetEndpoint remoteEndpoint_;
        NetEndpoint localEndpoint_;
        AuWPtr<ISocketServer> wpParent_ {};
        SocketServer *wpParent2_ {};

        bool bForceFailConstruct_ {};

        bool bHasRemoteMany_ {};
        NetSocketConnectMany connectMany_;
        NetWorker *pWorker_;
        NetInterface *pInterface_;
        SocketChannel socketChannel_;
        AuSPtr<ISocketDriver> pSocketDriver_;
        AuSPtr<IIOHandle> osHandleOwner_;

        NetError error_;

        bool bHasErrored_ {};
        bool bHasConnected_ {};
        bool bHasPreestablished_ {};
        AuString resolveLater {};
    };
}

#if defined(AURORA_IS_MODERNNT_DERIVED)
    #include "AuNetSocket.NT.hpp"
#else
    #include "AuNetSocket.Unix.hpp"
#endif