From 9a4e17876e782f58577829e068d4005c9d4e9b66 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juraj=20Andr=C3=A1ssy?=
 <10706773+JAndrassy@users.noreply.github.com>
Date: Fri, 24 Nov 2023 10:10:27 +0100
Subject: [PATCH] WiFi - static IP auto gw,mask,dns as in Arduino libraries
 (#9031)

---
 libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp | 16 ++++++++++++++++
 libraries/ESP8266WiFi/src/ESP8266WiFiSTA.h   |  5 +++++
 2 files changed, 21 insertions(+)

diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp b/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp
index 048ccc560..dfea41298 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp
@@ -339,6 +339,22 @@ bool ESP8266WiFiSTAClass::config(IPAddress local_ip, IPAddress arg1, IPAddress a
   return true;
 }
 
+bool ESP8266WiFiSTAClass::config(IPAddress local_ip, IPAddress dns) {
+
+    if (!local_ip.isSet())
+        return config(INADDR_ANY, INADDR_ANY, INADDR_ANY);
+
+    if (!local_ip.isV4())
+        return false;
+
+    IPAddress gw(local_ip);
+    gw[3] = 1;
+    if (!dns.isSet()) {
+        dns = gw;
+    }
+    return config(local_ip, dns, gw);
+}
+
 /**
  * Change DNS for static IP configuration
  * @param dns1       Static DNS server 1
diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.h b/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.h
index c5b4d3862..62461dbae 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.h
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.h
@@ -46,6 +46,11 @@ class ESP8266WiFiSTAClass: public LwipIntf {
         //to detect Arduino arg order, and handle it correctly. Be aware that the Arduino default value handling doesn't
         //work here (see Arduino docs for gway/subnet defaults). In other words: at least 3 args must always be given.
         bool config(IPAddress local_ip, IPAddress gateway, IPAddress subnet, IPAddress dns1 = INADDR_ANY, IPAddress dns2 = INADDR_ANY);
+
+        // two and one parameter version. 2nd parameter is DNS like in Arduino
+        // IPv4 only
+        bool config(IPAddress local_ip, IPAddress dns = INADDR_ANY);
+
         bool setDNS(IPAddress dns1, IPAddress dns2 = INADDR_ANY);
 
         bool reconnect();