fix(net): Use network_event_handle_t for internal callbacks

libraries/Ethernet/src/ETH.cpp

@@ -136,7 +136,7 @@ ETHClass::ETHClass(uint8_t eth_index)
     _pin_mcd(-1), _pin_mdio(-1), _pin_power(-1), _pin_rmii_clock(-1)
 #endif /* CONFIG_ETH_USE_ESP32_EMAC */
     ,
-    _task_stack_size(4096) {
+    _task_stack_size(4096), _eth_connected_event_handle(0) {
 }
 
 ETHClass::~ETHClass() {}
@@ -359,7 +359,7 @@ bool ETHClass::begin(eth_phy_type_t type, int32_t phy_addr, int mdc, int mdio, i
   /* attach to receive events */
   initNetif((Network_Interface_ID)(ESP_NETIF_ID_ETH + _eth_index));
 
-  Network.onSysEvent(onEthConnected, ARDUINO_EVENT_ETH_CONNECTED);
+  _eth_connected_event_handle = Network.onSysEvent(onEthConnected, ARDUINO_EVENT_ETH_CONNECTED);
 
   ret = esp_eth_start(_eth_handle);
   if (ret != ESP_OK) {
@@ -849,7 +849,7 @@ bool ETHClass::beginSPI(
     perimanSetPinBusExtraType(_pin_rst, "ETH_RST");
   }
 
-  Network.onSysEvent(onEthConnected, ARDUINO_EVENT_ETH_CONNECTED);
+  _eth_connected_event_handle = Network.onSysEvent(onEthConnected, ARDUINO_EVENT_ETH_CONNECTED);
 
   return true;
 
@@ -885,7 +885,8 @@ static bool empty_ethDetachBus(void *bus_pointer) {
 
 void ETHClass::end(void) {
 
-  Network.removeEvent(onEthConnected, ARDUINO_EVENT_ETH_CONNECTED);
+  Network.removeEvent(_eth_connected_event_handle);
+  _eth_connected_event_handle = 0;
 
   if (_eth_handle != NULL) {
     if (esp_eth_stop(_eth_handle) != ESP_OK) {

libraries/Ethernet/src/ETH.h

@@ -247,6 +247,7 @@ class ETHClass : public NetworkInterface {
   int8_t _pin_rmii_clock;
 #endif /* CONFIG_ETH_USE_ESP32_EMAC */
   size_t _task_stack_size;
+  network_event_handle_t _eth_connected_event_handle;
 
   static bool ethDetachBus(void *bus_pointer);
   bool beginSPI(

libraries/PPP/src/PPP.cpp

@@ -152,7 +152,8 @@ esp_modem_dce_t *PPPClass::handle() const {
 
 PPPClass::PPPClass()
   : _dce(NULL), _pin_tx(-1), _pin_rx(-1), _pin_rts(-1), _pin_cts(-1), _flow_ctrl(ESP_MODEM_FLOW_CONTROL_NONE), _pin_rst(-1), _pin_rst_act_low(true),
-    _pin_rst_delay(200), _pin(NULL), _apn(NULL), _rx_buffer_size(4096), _tx_buffer_size(512), _mode(ESP_MODEM_MODE_COMMAND), _uart_num(UART_NUM_1) {}
+    _pin_rst_delay(200), _pin(NULL), _apn(NULL), _rx_buffer_size(4096), _tx_buffer_size(512), _mode(ESP_MODEM_MODE_COMMAND), _uart_num(UART_NUM_1),
+    _ppp_event_handle(0) {}
 
 PPPClass::~PPPClass() {}
 
@@ -360,7 +361,7 @@ bool PPPClass::begin(ppp_modem_model_t model, uint8_t uart_num, int baud_rate) {
     }
   }
 
-  Network.onSysEvent(onPppArduinoEvent);
+  _ppp_event_handle = Network.onSysEvent(onPppArduinoEvent);
 
   setStatusBits(ESP_NETIF_STARTED_BIT);
   arduino_event_t arduino_event;
@@ -402,7 +403,8 @@ void PPPClass::end(void) {
   }
   _esp_modem = NULL;
 
-  Network.removeEvent(onPppArduinoEvent);
+  Network.removeEvent(_ppp_event_handle);
+  _ppp_event_handle = 0;
 
   if (_dce != NULL) {
     esp_modem_destroy(_dce);

libraries/PPP/src/PPP.h

@@ -108,6 +108,7 @@ class PPPClass : public NetworkInterface {
   int _tx_buffer_size;
   esp_modem_dce_mode_t _mode;
   uint8_t _uart_num;
+  network_event_handle_t _ppp_event_handle;
 
   static bool pppDetachBus(void *bus_pointer);
 };

libraries/WiFi/src/AP.cpp

@@ -148,7 +148,7 @@ void APClass::_onApEvent(int32_t event_id, void *event_data) {
   }
 }
 
-APClass::APClass() {
+APClass::APClass() : _wifi_ap_event_handle(0) {
   _ap_network_if = this;
 }
 
@@ -163,7 +163,7 @@ bool APClass::onEnable() {
     return false;
   }
   if (_esp_netif == NULL) {
-    Network.onSysEvent(_onApArduinoEvent);
+    _wifi_ap_event_handle = Network.onSysEvent(_onApArduinoEvent);
     _esp_netif = get_esp_interface_netif(ESP_IF_WIFI_AP);
     /* attach to receive events */
     initNetif(ESP_NETIF_ID_AP);
@@ -172,7 +172,8 @@ bool APClass::onEnable() {
 }
 
 bool APClass::onDisable() {
-  Network.removeEvent(_onApArduinoEvent);
+  Network.removeEvent(_wifi_ap_event_handle);
+  _wifi_ap_event_handle = 0;
   // we just set _esp_netif to NULL here, so destroyNetif() does not try to destroy it.
   // That would be done by WiFi.enableAP(false) if STA is not enabled, or when it gets disabled
   _esp_netif = NULL;

libraries/WiFi/src/STA.cpp

@@ -228,7 +228,8 @@ void STAClass::_onStaEvent(int32_t event_id, void *event_data) {
 }
 
 STAClass::STAClass()
-  : _minSecurity(WIFI_AUTH_WPA2_PSK), _scanMethod(WIFI_FAST_SCAN), _sortMethod(WIFI_CONNECT_AP_BY_SIGNAL), _autoReconnect(true), _status(WL_STOPPED) {
+  : _minSecurity(WIFI_AUTH_WPA2_PSK), _scanMethod(WIFI_FAST_SCAN), _sortMethod(WIFI_CONNECT_AP_BY_SIGNAL), _autoReconnect(true), _status(WL_STOPPED),
+    _wifi_sta_event_handle(0) {
   _sta_network_if = this;
 }
 
@@ -276,14 +277,15 @@ bool STAClass::onEnable() {
       return false;
     }
     /* attach to receive events */
-    Network.onSysEvent(_onStaArduinoEvent);
+    _wifi_sta_event_handle = Network.onSysEvent(_onStaArduinoEvent);
     initNetif(ESP_NETIF_ID_STA);
   }
   return true;
 }
 
 bool STAClass::onDisable() {
-  Network.removeEvent(_onStaArduinoEvent);
+  Network.removeEvent(_wifi_sta_event_handle);
+  _wifi_sta_event_handle = 0;
   // we just set _esp_netif to NULL here, so destroyNetif() does not try to destroy it.
   // That would be done by WiFi.enableSTA(false) if AP is not enabled, or when it gets disabled
   _esp_netif = NULL;

libraries/WiFi/src/WiFiAP.h

@@ -60,6 +60,8 @@ class APClass : public NetworkInterface {
   void _onApEvent(int32_t event_id, void *event_data);
 
 protected:
+  network_event_handle_t _wifi_ap_event_handle;
+
   size_t printDriverInfo(Print &out) const;
 
   friend class WiFiGenericClass;

libraries/WiFi/src/WiFiSTA.h

@@ -95,6 +95,7 @@ class STAClass : public NetworkInterface {
   wifi_sort_method_t _sortMethod;
   bool _autoReconnect;
   wl_status_t _status;
+  network_event_handle_t _wifi_sta_event_handle;
 
   size_t printDriverInfo(Print &out) const;