juce_WebInputStream.h

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/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   The code included in this file is provided under the terms of the ISC license
   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
   To use, copy, modify, and/or distribute this software for any purpose with or
   without fee is hereby granted provided that the above copyright notice and
   this permission notice appear in all copies.
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{
 
//==============================================================================
class JUCE_API WebInputStream  : public InputStream
{
 public:
    WebInputStream (const URL& url, bool addParametersToRequestBody);

    ~WebInputStream() override;

    WebInputStream& withExtraHeaders (const String& extraHeaders);

    WebInputStream& withCustomRequestCommand (const String& customRequestCommand);

    WebInputStream& withConnectionTimeout (int timeoutInMs);

    WebInputStream& withNumRedirectsToFollow (int numRedirects);
 
    //==============================================================================
    class JUCE_API Listener
    {
    public:
        virtual ~Listener() = default;

        virtual bool postDataSendProgress (WebInputStream& request, int bytesSent, int totalBytes)
        {
            ignoreUnused (request, bytesSent, totalBytes);
            return true;
        }
    };

    bool connect (Listener* listener);

    bool isError() const;

    void cancel();

    StringPairArray getRequestHeaders() const;

    StringPairArray getResponseHeaders();

    int getStatusCode();
 
    //==============================================================================
    int64 getTotalLength() override;

    int read (void* destBuffer, int maxBytesToRead) override;

    bool isExhausted() override;

    int64 getPosition() override;

    bool setPosition (int64 wantedPos) override;
 
 private:
    static void createHeadersAndPostData (const URL&, String&, MemoryBlock&, bool);
    static StringPairArray parseHttpHeaders (const String&);
 
    class Pimpl;
    friend class Pimpl;
 
    std::unique_ptr<Pimpl> pimpl;
    bool hasCalledConnect = false;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WebInputStream)
};
 
} // namespace juce