From 7f318d72cfe117d822fe16aae6e3e9a520f12a75 Mon Sep 17 00:00:00 2001
From: Martin Ayotte <martinayotte@yahoo.ca>
Date: Sun, 18 Oct 2015 14:18:14 -0400
Subject: [PATCH] add dnsIP() to ESP8266WiFi class

---
 libraries/ESP8266WiFi/src/ESP8266WiFi.cpp | 6 ++++++
 libraries/ESP8266WiFi/src/ESP8266WiFi.h   | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFi.cpp b/libraries/ESP8266WiFi/src/ESP8266WiFi.cpp
index f40014e55..10dae7094 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFi.cpp
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFi.cpp
@@ -370,6 +370,12 @@ IPAddress ESP8266WiFiClass::gatewayIP()
     return IPAddress(ip.gw.addr);
 }
 
+IPAddress ESP8266WiFiClass::dnsIP()
+{
+    ip_addr_t dns_ip = dns_getserver(0);
+    return IPAddress(dns_ip.addr);
+}
+
 String ESP8266WiFiClass::SSID() const
 {
     static struct station_config conf;
diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFi.h b/libraries/ESP8266WiFi/src/ESP8266WiFi.h
index 70538127f..23ee644a4 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFi.h
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFi.h
@@ -168,6 +168,13 @@ public:
      */
    IPAddress gatewayIP();
 
+    /*
+     * Get the DNS ip address.
+     *
+     * return: DNS ip address value
+     */
+   IPAddress dnsIP();
+
     /*
      * Return the current SSID associated with the network
      *