Source/WebCore/platform/network/curl/SocketStreamHandleImpl.h

/*
 * Copyright (C) 2009-2018 Apple Inc. All rights reserved.
 * Copyright (C) 2009 Google Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#pragma once

#include "SocketStreamHandle.h"

#if PLATFORM(WIN)
#include <winsock2.h>
#endif

#include <curl/curl.h>
#include <pal/SessionID.h>
#include <wtf/Deque.h>
#include <wtf/Lock.h>
#include <wtf/RefCounted.h>
#include <wtf/Seconds.h>
#include <wtf/StreamBuffer.h>
#include <wtf/Threading.h>
#include <wtf/UniqueArray.h>

namespace WebCore {

class SocketStreamHandleClient;

class SocketStreamHandleImpl : public SocketStreamHandle {
public:
    static Ref<SocketStreamHandleImpl> create(const URL& url, SocketStreamHandleClient& client, PAL::SessionID, const String&, SourceApplicationAuditToken&&) { return adoptRef(*new SocketStreamHandleImpl(url, client)); }

    virtual ~SocketStreamHandleImpl();

    WEBCORE_EXPORT void platformSend(const uint8_t* data, size_t length, Function<void(bool)>&&) final;
    WEBCORE_EXPORT void platformSendHandshake(const uint8_t* data, size_t length, const std::optional<CookieRequestHeaderFieldProxy>&, Function<void(bool, bool)>&&) final;
    WEBCORE_EXPORT void platformClose() final;
private:
    WEBCORE_EXPORT SocketStreamHandleImpl(const URL&, SocketStreamHandleClient&);

    size_t bufferedAmount() final;
    std::optional<size_t> platformSendInternal(const uint8_t*, size_t);
    bool sendPendingData();

    bool readData(CURL*);
    bool sendData(CURL*);
    bool waitForAvailableData(CURL*, Seconds selectTimeout);

    void startThread();
    void stopThread();

    void didReceiveData();
    void didOpenSocket();

    struct SocketData {
        SocketData(UniqueArray<char>&& source, size_t length)
        {
            data = WTFMove(source);
            size = length;
        }

        SocketData(SocketData&& other)
        {
            data = WTFMove(other.data);
            size = other.size;
            other.size = 0;
        }

        UniqueArray<char> data;
        size_t size { 0 };
    };

    RefPtr<Thread> m_workerThread;
    std::atomic<bool> m_stopThread { false };
    Lock m_mutexSend;
    Lock m_mutexReceive;
    Deque<SocketData> m_sendData;
    Deque<SocketData> m_receiveData;
    bool m_closed { false };

    StreamBuffer<uint8_t, 1024 * 1024> m_buffer;
    static const unsigned maxBufferSize = 100 * 1024 * 1024;
};

} // namespace WebCore