HttpRequestPayload.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/Array.h"
#include "Containers/ArrayView.h"
#include "CoreMinimal.h"
#include "HAL/PlatformMath.h"
#include "Templates/SharedPointer.h"
 
class FArchive;
 
class FRequestPayload
{
public:
    virtual ~FRequestPayload() {}
    virtual uint64 GetContentLength() const = 0;
    virtual const TArray<uint8>& GetContent() const = 0;
    virtual bool IsURLEncoded() const = 0;
    virtual size_t FillOutputBuffer(void* OutputBuffer, size_t MaxOutputBufferSize, size_t SizeAlreadySent) = 0;
 
    virtual size_t FillOutputBuffer(TArrayView<uint8> OutputBuffer, size_t SizeAlreadySent) = 0;
 
    virtual bool Open() = 0;
 
    virtual void Close() = 0;
};
 
class FRequestPayloadInFileStream : public FRequestPayload
{
public:
    FRequestPayloadInFileStream(const FString& InFilename);
    FRequestPayloadInFileStream(TSharedRef<FArchive> InFile, bool bInCloseWhenComplete = false);
    virtual ~FRequestPayloadInFileStream();
    virtual uint64 GetContentLength() const override;
    virtual const TArray<uint8>& GetContent() const override;
    virtual bool IsURLEncoded() const override;
    virtual size_t FillOutputBuffer(void* OutputBuffer, size_t MaxOutputBufferSize, size_t SizeAlreadySent) override;
    virtual size_t FillOutputBuffer(TArrayView<uint8> OutputBuffer, size_t SizeAlreadySent) override;
    virtual bool Open() override;
    virtual void Close() override;
 
private:
    FString Filename;
    TSharedPtr<FArchive> File;
    bool bCloseWhenComplete = false;
};
 
class FRequestPayloadInMemory : public FRequestPayload
{
public:
    FRequestPayloadInMemory(const TArray<uint8>& Array);
    FRequestPayloadInMemory(TArray<uint8>&& Array);
    virtual ~FRequestPayloadInMemory();
    virtual uint64 GetContentLength() const override;
    virtual const TArray<uint8>& GetContent() const override;
    virtual bool IsURLEncoded() const override;
    virtual size_t FillOutputBuffer(void* OutputBuffer, size_t MaxOutputBufferSize, size_t SizeAlreadySent) override;
    virtual size_t FillOutputBuffer(TArrayView<uint8> OutputBuffer, size_t SizeAlreadySent) override;
    virtual bool Open() override;
    virtual void Close() override;
private:
    TArray<uint8> Buffer;
};