WiFiSTA - method setDNS as in WiFi libraries by Arduino (espressif#8854)

https://www.arduino.cc/reference/en/libraries/wifi/wifi.setdns/

Author: JAndrassy

libraries/WiFi/src/WiFiSTA.cpp

@@ -431,6 +431,19 @@ bool WiFiSTAClass::config(IPAddress local_ip, IPAddress gateway, IPAddress subne
  return err == ESP_OK;
 }
 
+/**
+ * Change DNS server for static IP configuration
+ * @param dns1 Static DNS server 1
+ * @param dns2 Static DNS server 2 (optional)
+ */
+bool WiFiSTAClass::setDNS(IPAddress dns1, IPAddress dns2)
+{
+ if(WiFiGenericClass::getMode() == WIFI_MODE_NULL)
+ return false;
+ esp_err_t err = set_esp_interface_dns(ESP_IF_WIFI_STA, dns1, dns2);
+ return err == ESP_OK;
+}
+
 /**
  * is STA interface connected?
  * @return true if STA is connected to an AP

libraries/WiFi/src/WiFiSTA.h

@@ -56,6 +56,7 @@ class WiFiSTAClass
  wl_status_t begin();
 
  bool config(IPAddress local_ip, IPAddress gateway, IPAddress subnet, IPAddress dns1 = (uint32_t)0x00000000, IPAddress dns2 = (uint32_t)0x00000000);
+ bool setDNS(IPAddress dns1, IPAddress dns2 = (uint32_t)0x00000000); // sets DNS IP for all network interfaces
 
  bool reconnect();
  bool disconnect(bool wifioff = false, bool eraseap = false);