Ethernet use DNS in examples

Set the DNS-Server as third parameter of Ethernet.begin if at least gateway is specified. Reference is Updated before.

In BarometricPressureWebServer gateway and subnet wasn't used.

Signed-off-by: Eddy <est.git@online.de>

Author: eddyst

libraries/Ethernet/examples/AdvancedChatServer/AdvancedChatServer.ino

@@ -30,6 +30,7 @@ byte mac[] = {
   0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
 };
 IPAddress ip(192, 168, 1, 177);
+IPAddress myDns(192, 168, 1, 1);
 IPAddress gateway(192, 168, 1, 1);
 IPAddress subnet(255, 255, 0, 0);
 
@@ -41,7 +42,7 @@ EthernetClient clients[4];
 
 void setup() {
   // initialize the ethernet device
-  Ethernet.begin(mac, ip, gateway, subnet);
+  Ethernet.begin(mac, ip, myDns, gateway, subnet);
   // start listening for clients
   server.begin();
   // Open serial communications and wait for port to open:

libraries/Ethernet/examples/BarometricPressureWebServer/BarometricPressureWebServer.ino

@@ -33,8 +33,6 @@ byte mac[] = {
 };
 // assign an IP address for the controller:
 IPAddress ip(192, 168, 1, 20);
-IPAddress gateway(192, 168, 1, 1);
-IPAddress subnet(255, 255, 255, 0);
 
 
 // Initialize the Ethernet server library

libraries/Ethernet/examples/ChatServer/ChatServer.ino

@@ -27,6 +27,7 @@ byte mac[] = {
   0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
 };
 IPAddress ip(192, 168, 1, 177);
+IPAddress myDns(192,168,1, 1);
 IPAddress gateway(192, 168, 1, 1);
 IPAddress subnet(255, 255, 0, 0);
 
@@ -37,7 +38,7 @@ boolean alreadyConnected = false; // whether or not the client was connected pre
 
 void setup() {
   // initialize the ethernet device
-  Ethernet.begin(mac, ip, gateway, subnet);
+  Ethernet.begin(mac, ip, myDns, gateway, subnet);
   // start listening for clients
   server.begin();
   // Open serial communications and wait for port to open:

libraries/Ethernet/examples/DhcpChatServer/DhcpChatServer.ino

@@ -28,6 +28,7 @@ byte mac[] = {
   0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
 };
 IPAddress ip(192, 168, 1, 177);
+IPAddress myDns(192,168,1, 1);
 IPAddress gateway(192, 168, 1, 1);
 IPAddress subnet(255, 255, 0, 0);
 
@@ -49,7 +50,7 @@ void setup() {
   if (Ethernet.begin(mac) == 0) {
     Serial.println("Failed to configure Ethernet using DHCP");
     // initialize the ethernet device not using DHCP:
-    Ethernet.begin(mac, ip, gateway, subnet);
+    Ethernet.begin(mac, ip, myDns, gateway, subnet);
   }
   // print your local IP address:
   Serial.print("My IP address: ");