text:  /*
   * libwebsockets - small server side websockets and web server implementation
   *
   * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
   *
   * 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.
   *
   * Included from lib/private-lib-core.h if LWS_PLAT_FREERTOS
   */
  
  #if !defined(LWS_ESP_PLATFORM)
  #define SOMAXCONN 3
  #endif
  
  #if defined(LWS_AMAZON_RTOS)
   int
   open(const char *path, int oflag, ...);
  #else
   #include <fcntl.h>
  #endif
  
   #include <strings.h>
   #include <unistd.h>
   #include <sys/stat.h>
   #include <sys/types.h>
   #include <sys/time.h>
   #include <netdb.h>
  
   #ifndef __cplusplus
    #include <errno.h>
   #endif
   #include <signal.h>
  #if defined(LWS_AMAZON_RTOS)
  const char *
  gai_strerror(int);
  #else
   #include <sys/socket.h>
  #endif
  
  #if defined(LWS_AMAZON_RTOS)
   #include "FreeRTOS.h"
  #if defined(LWS_WITH_SYS_ASYNC_DNS)
   #include "FreeRTOS_IP.h"
  #endif
   #include "timers.h"
   #include <esp_attr.h>
  #else
   #include "freertos/timers.h"
   #include <esp_attr.h>
   #include <esp_system.h>
   #include <esp_task_wdt.h>
  #endif
  
  #if defined(LWS_WITH_ESP32)
  #include "lwip/apps/sntp.h"
  #include <errno.h>
  #endif
  
  typedef SemaphoreHandle_t lws_mutex_t;
  #define lws_mutex_init(x)	x = xSemaphoreCreateMutex()
  #define lws_mutex_destroy(x)	vSemaphoreDelete(x)
  #define lws_mutex_lock(x)	xSemaphoreTake(x, portMAX_DELAY)
  #define lws_mutex_unlock(x)	xSemaphoreGive(x)
  
  #include <lwip/sockets.h>
  
   #if defined(LWS_BUILTIN_GETIFADDRS)
    #include "./misc/getifaddrs.h"
   #endif
  
   #define LWS_ERRNO errno
   #define LWS_EAGAIN EAGAIN
   #define LWS_EALREADY EALREADY
   #define LWS_EINPROGRESS EINPROGRESS
   #define LWS_EINTR EINTR
   #define LWS_EISCONN EISCONN
   #define LWS_ENOTCONN ENOTCONN
   #define LWS_EWOULDBLOCK EWOULDBLOCK
   #define LWS_EADDRINUSE EADDRINUSE
  
   #define lws_set_blocking_send(wsi)
  
   #ifndef LWS_NO_FORK
    #ifdef LWS_HAVE_SYS_PRCTL_H
     #include <sys/prctl.h>
    #endif
   #endif
  
  #if !defined(MSG_NOSIGNAL)
  #define MSG_NOSIGNAL 0
  #endif
  
  #define compatible_close(x) close(x)
  #define lws_plat_socket_offset() LWIP_SOCKET_OFFSET
  #define wsi_from_fd(A,B)  A->lws_lookup[B - lws_plat_socket_offset()]
  
  struct lws_context;
  struct lws;
  
  int
  insert_wsi(const struct lws_context *context, struct lws *wsi);
  
  #define delete_from_fd(A,B) A->lws_lookup[B - lws_plat_socket_offset()] = 0
  
  #define LWS_PLAT_TIMER_TYPE		TimerHandle_t
  #define LWS_PLAT_TIMER_CB(name, var)	void name(TimerHandle_t var)
  #define LWS_PLAT_TIMER_CB_GET_OPAQUE(x) pvTimerGetTimerID(x)
  #define LWS_PLAT_TIMER_CREATE(name, interval, repeat, opaque, cb) \
  	xTimerCreate(name, pdMS_TO_TICKS(interval) ? pdMS_TO_TICKS(interval) : 1, \
  			repeat ? pdTRUE : 0, opaque, cb)
  #define LWS_PLAT_TIMER_DELETE(ptr)	xTimerDelete(ptr, 0)
  #define LWS_PLAT_TIMER_START(ptr)	xTimerStart(ptr, 0)
  #define LWS_PLAT_TIMER_STOP(ptr)	xTimerStop(ptr, 0)
  
  
  