text: /*************************************************************************/
  /*  wsl_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,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
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  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #ifndef WSLPEER_H
  #define WSLPEER_H
  
  #ifndef JAVASCRIPT_ENABLED
  
  #include "core/error/error_list.h"
  #include "core/io/packet_peer.h"
  #include "core/io/stream_peer_tcp.h"
  #include "core/templates/ring_buffer.h"
  #include "packet_buffer.h"
  #include "websocket_peer.h"
  #include "wslay/wslay.h"
  
  #define WSL_MAX_HEADER_SIZE 4096
  
  class WSLPeer : public WebSocketPeer {
  	GDCIIMPL(WSLPeer, WebSocketPeer);
  
  public:
  	struct PeerData {
  		bool polling;
  		bool destroy;
  		bool valid;
  		bool is_server;
  		bool closing;
  		void *obj;
  		void *peer;
  		Ref<StreamPeer> conn;
  		Ref<StreamPeerTCP> tcp;
  		int id;
  		wslay_event_context_ptr ctx;
  
  		PeerData() {
  			polling = false;
  			destroy = false;
  			valid = false;
  			is_server = false;
  			id = 1;
  			ctx = nullptr;
  			obj = nullptr;
  			closing = false;
  			peer = nullptr;
  		}
  	};
  
  	static String compute_key_response(String p_key);
  	static String generate_key();
  
  private:
  	static bool _wsl_poll(struct PeerData *p_data);
  	static void _wsl_destroy(struct PeerData **p_data);
  
  	struct PeerData *_data;
  	uint8_t _is_string;
  	// Our packet info is just a boolean (is_string), using uint8_t for it.
  	PacketBuffer<uint8_t> _in_buffer;
  
  	Vector<uint8_t> _packet_buffer;
  
  	WriteMode write_mode;
  
  public:
  	int close_code;
  	String close_reason;
  	void poll(); // Used by client and server.
  
  	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 { return _packet_buffer.size(); };
  
  	virtual void close_now();
  	virtual void close(int p_code = 1000, String p_reason = "");
  	virtual bool is_connected_to_host() const;
  	virtual IP_Address get_connected_host() const;
  	virtual uint16_t get_connected_port() const;
  
  	virtual WriteMode get_write_mode() const;
  	virtual void set_write_mode(WriteMode p_mode);
  	virtual bool was_string_packet() const;
  	virtual void set_no_delay(bool p_enabled);
  
  	void make_context(PeerData *p_data, unsigned int p_in_buf_size, unsigned int p_in_pkt_size, unsigned int p_out_buf_size, unsigned int p_out_pkt_size);
  	Error parse_message(const wslay_event_on_msg_recv_arg *arg);
  	void invalidate();
  
  	WSLPeer();
  	~WSLPeer();
  };
  
  #endif // JAVASCRIPT_ENABLED
  
  #endif // LSWPEER_H
  