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/*************************************************************************/
/* lws_helper.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 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 */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef LWS_HELPER_H
#define LWS_HELPER_H
#define LWS_BUF_SIZE 65536
#define LWS_PACKET_SIZE LWS_BUF_SIZE
#include "core/io/stream_peer.h"
#include "core/os/os.h"
#include "core/reference.h"
#include "core/ring_buffer.h"
#include "lws_peer.h"
struct _LWSRef {
bool free_context;
bool is_polling;
bool is_valid;
bool is_destroying;
void *obj;
struct lws_protocols *lws_structs;
char *lws_names;
};
_LWSRef *_lws_create_ref(void *obj);
void _lws_free_ref(_LWSRef *ref);
bool _lws_destroy(struct lws_context *context, _LWSRef *ref);
bool _lws_poll(struct lws_context *context, _LWSRef *ref);
void _lws_make_protocols(void *p_obj, lws_callback_function *p_callback, PoolVector<String> p_names, _LWSRef **r_lws_ref);
/* clang-format off */
#define LWS_HELPER(CNAME) \
protected: \
struct _LWSRef *_lws_ref; \
struct lws_context *context; \
bool _keep_servicing; \
\
static int _lws_gd_callback(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) { \
\
if (wsi == NULL) { \
return 0; \
} \
\
struct _LWSRef *ref = (struct _LWSRef *)lws_context_user(lws_get_context(wsi)); \
if (!ref->is_valid) \
return 0; \
CNAME *helper = (CNAME *)ref->obj; \
helper->_keep_servicing = true; \
return helper->_handle_cb(wsi, reason, user, in, len); \
} \
\
void invalidate_lws_ref() { \
if (_lws_ref != NULL) \
_lws_ref->is_valid = false; \
} \
\
void destroy_context() { \
if (_lws_destroy(context, _lws_ref)) { \
context = NULL; \
_lws_ref = NULL; \
} \
} \
\
public: \
virtual int _handle_cb(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len); \
\
void _lws_poll() { \
ERR_FAIL_COND(context == NULL); \
do { \
_keep_servicing = false; \
if (::_lws_poll(context, _lws_ref)) { \
context = NULL; \
_lws_ref = NULL; \
break; \
} \
} while (_keep_servicing); \
} \
\
protected:
/* clang-format on */
#endif // LWS_HELPER_H
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