SetDns method manually

[BrotherV]

SetDNS method

Description

I have a problem with WiFiClientSecure, it can't make a connection to HTTPS and HTTP servers (port 443 and 80). I know that I have to set the DNS server IP, however, since we have many nodes that connect to a router, dedicating a static IP for each one is not a good solution. All of them have the same code and the IP must be set dynamically by the router. The point is, I want to set the DNS server IP manually but there is not such a command for this purpose.
I've read about the Arduino WiFi shield and it has a command to set one or two DNS servers without setting static IP. I want to know is it possible to add this command to the library?!!

 WiFi.setDNS(dns1);     or    WiFi.setDNS(dns1, dns2); 

Example

#include <Arduino.h>

// Network Configurations
#define WLAN_SSID     "YOUR_WIRELESS_SSID"
#define WLAN_PASSWORD "YOUR_PASSWORD"

// the IP address for the shield:
IPAddress dns1(8, 8, 8, 8);  //Google dns
IPAddress dns2(8, 8, 4, 4);  //Alternate dns

void setup() {

    WiFi.mode(WIFI_STA);
    WiFi.begin(WLAN_SSID, WLAN_PASSWORD);
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
  
    Serial.println();
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());

    // print your WiFi IP address:
    WiFi.setDNS(dns1);              //WiFi.setDNS(dns1, dns2); 
    Serial.print("Dns configured.");

}

void loop() {}

[d-a-v]

Use dns_setserver(), The max number of dns server is there.
Best would be that your router itself give the DNS server, as it always should happen.
Be aware that at the end of each lease time, dhcp client (esp) re-request an IP from the routerdhcp-server,
if there is a DNS misconfiguration in the router, your setting may be overwritten.