text: /*************************************************************************/
  /*  packet_peer.h                                                        */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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  /*************************************************************************/
  
  #ifndef PACKET_PEER_H
  #define PACKET_PEER_H
  
  #include "core/io/stream_peer.h"
  #include "core/object.h"
  #include "core/ring_buffer.h"
  
  class PacketPeer : public Reference {
  
  	GDCLASS(PacketPeer, Reference);
  
  	Variant _bnd_get_var(bool p_allow_objects = false);
  
  	static void _bind_methods();
  
  	Error _put_packet(const PoolVector<uint8_t> &p_buffer);
  	PoolVector<uint8_t> _get_packet();
  	Error _get_packet_error() const;
  
  	mutable Error last_get_error;
  
  	bool allow_object_decoding;
  
  	int encode_buffer_max_size;
  	PoolVector<uint8_t> encode_buffer;
  
  public:
  	virtual int get_available_packet_count() const = 0;
  	virtual Error get_packet(const uint8_t **r_buffer, int &r_buffer_size) = 0; ///< buffer is GONE after next get_packet
  	virtual Error put_packet(const uint8_t *p_buffer, int p_buffer_size) = 0;
  
  	virtual int get_max_packet_size() const = 0;
  
  	/* helpers / binders */
  
  	virtual Error get_packet_buffer(PoolVector<uint8_t> &r_buffer);
  	virtual Error put_packet_buffer(const PoolVector<uint8_t> &p_buffer);
  
  	virtual Error get_var(Variant &r_variant, bool p_allow_objects = false);
  	virtual Error put_var(const Variant &p_packet, bool p_full_objects = false);
  
  	void set_allow_object_decoding(bool p_enable);
  	bool is_object_decoding_allowed() const;
  
  	void set_encode_buffer_max_size(int p_max_size);
  	int get_encode_buffer_max_size() const;
  
  	PacketPeer();
  	~PacketPeer() {}
  };
  
  class PacketPeerStream : public PacketPeer {
  
  	GDCLASS(PacketPeerStream, PacketPeer);
  
  	//the way the buffers work sucks, will change later
  
  	mutable Ref<StreamPeer> peer;
  	mutable RingBuffer<uint8_t> ring_buffer;
  	mutable std::vector<uint8_t> input_buffer;
  	mutable std::vector<uint8_t> output_buffer;
  
  	Error _poll_buffer() const;
  
  protected:
  	void _set_stream_peer(REF p_peer);
  	static void _bind_methods();
  
  public:
  	virtual int get_available_packet_count() const;
  	virtual Error get_packet(const uint8_t **r_buffer, int &r_buffer_size);
  	virtual Error put_packet(const uint8_t *p_buffer, int p_buffer_size);
  
  	virtual int get_max_packet_size() const;
  
  	void set_stream_peer(const Ref<StreamPeer> &p_peer);
  	Ref<StreamPeer> get_stream_peer() const;
  	void set_input_buffer_max_size(int p_max_size);
  	int get_input_buffer_max_size() const;
  	void set_output_buffer_max_size(int p_max_size);
  	int get_output_buffer_max_size() const;
  	PacketPeerStream();
  };
  
  #endif // PACKET_STREAM_H
  