feat(net): Add support for selecting the default network interface (espressif#9457)

Author: me-no-dev

libraries/Network/src/NetworkInterface.cpp

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 #include "NetworkInterface.h"
+#include "NetworkManager.h"
 #include "esp_netif.h"
 #include "esp_netif_defaults.h"
 #include "esp_system.h"
@@ -538,6 +539,43 @@ String NetworkInterface::impl_name(void) const
  return String(netif_name);
 }
 
+int NetworkInterface::impl_index() const
+{
+ if(_esp_netif == NULL){
+ return -1;
+ }
+ return esp_netif_get_netif_impl_index(_esp_netif);
+}
+
+int NetworkInterface::route_prio() const
+{
+ if(_esp_netif == NULL){
+ return -1;
+ }
+ return esp_netif_get_route_prio(_esp_netif);
+}
+
+bool NetworkInterface::setDefault()
+{
+ if(_esp_netif == NULL){
+ return false;
+ }
+ esp_err_t err = esp_netif_set_default_netif(_esp_netif);
+ if(err != ESP_OK){
+ log_e("Failed to set default netif: %d", err);
+ return false;
+ }
+ return true;
+}
+
+bool NetworkInterface::isDefault() const
+{
+ if(_esp_netif == NULL){
+ return false;
+ }
+ return esp_netif_get_default_netif() == _esp_netif;
+}
+
 uint8_t * NetworkInterface::macAddress(uint8_t* mac) const
 {
  if(!mac || _esp_netif == NULL){

libraries/Network/src/NetworkInterface.h

@@ -8,7 +8,6 @@
 #include "esp_netif_types.h"
 #include "esp_event.h"
 #include "Arduino.h"
-#include "NetworkManager.h"
 #include "Printable.h"
 
 typedef enum {
@@ -54,6 +53,10 @@ class NetworkInterface: public Printable {
  const char * ifkey() const;
  const char * desc() const;
  String impl_name() const;
+ int impl_index() const;
+ int route_prio() const;
+ bool setDefault();
+ bool isDefault() const;
 
  uint8_t * macAddress(uint8_t* mac) const;
  String macAddress() const;

libraries/Network/src/NetworkManager.cpp

@@ -4,7 +4,6 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 #include "NetworkManager.h"
-#include "NetworkInterface.h"
 #include "IPAddress.h"
 #include "esp_netif.h"
 #include "lwip/dns.h"
@@ -133,6 +132,23 @@ bool NetworkManager::setHostname(const char * name)
 
 NetworkInterface * getNetifByID(Network_Interface_ID id);
 
+bool NetworkManager::setDefaultInterface(NetworkInterface & ifc)
+{
+ return ifc.setDefault();
+}
+
+NetworkInterface * NetworkManager::getDefaultInterface()
+{
+ esp_netif_t * netif = esp_netif_get_default_netif();
+ for (int i = 0; i < ESP_NETIF_ID_MAX; ++i){
+ NetworkInterface * iface = getNetifByID((Network_Interface_ID)i);
+ if(iface != NULL && iface->netif() == netif){
+ return iface;
+ }
+ }
+ return NULL;
+}
+
 size_t NetworkManager::printTo(Print & out) const {
  size_t bytes = 0;
 

libraries/Network/src/NetworkManager.h

@@ -6,6 +6,7 @@
 #pragma once
 
 #include "NetworkEvents.h"
+#include "NetworkInterface.h"
 #include "IPAddress.h"
 #include "WString.h"
 
@@ -18,6 +19,9 @@ class NetworkManager : public NetworkEvents, public Printable {
 uint8_t * macAddress(uint8_t * mac);
 String macAddress();
 
+bool setDefaultInterface(NetworkInterface & ifc);
+NetworkInterface * getDefaultInterface();
+
  size_t printTo(Print & out) const;
 
  static const char * getHostname();