LEAmDNS - Multicast DNS Responder (#5442)

* LEAmDNS Responder (II)

Created a new branch to solve commit conflicts with recent changes to ESP8266mDNSResponder.cpp by d-a-v.

* Removed millis() roll-over issues

* fix LEA-mDNS

* astyle on lea-mdns examples

* add compatibility with lwIP-v1

* ditto

* use strncasecmp instead of lwip's strnicmp from lwIP-v2 (thanks @devyte)

* ditto

* fixes

* Update mDNS_Clock.ino

unindent

* Update mDNS_ServiceMonitor.ino

unindent

* Update LEAmDNS.h

Add setInstanceName() forwarder for compat

* Disable DEBUG_ESP_MDNS_RESPONDER by default

* [Fixed] Debug output line

DEBUG_OUTPUT needs to go inside DEBUG_EX_ function otherwise throw error if DEBUG_ESP_MDNS_RESPONDER is not defined

libraries/ESP8266mDNS/src/LEATimeFlag.h

@@ -0,0 +1,62 @@
+/*
+ * LEATimeFlag.h
+ */
+#ifndef __LEATIMEFLAG_H
+#define __LEATIMEFLAG_H
+
+
+#include <Arduino.h>
+
+
+/**
+ * clsLEATimeFlag
+ */
+class clsLEATimeFlag {
+public:
+    // constructor
+    clsLEATimeFlag(unsigned long p_ulTimeout = (unsigned long)(-1))
+    :   m_ulStart(millis()),
+        m_ulTimeout(p_ulTimeout) {
+    }
+    // operator bool
+    operator bool(void) const {
+        return flagged();
+    }
+    // flagged
+    bool flagged(void) const {
+        return ((millis() - m_ulStart) > m_ulTimeout);
+    }
+    // restart
+    void restart(unsigned long p_ulNewTimeout = (unsigned long)(-1)) {
+        if ((unsigned long)(-1) != p_ulNewTimeout) {
+            m_ulTimeout = p_ulNewTimeout;
+        }
+        m_ulStart = millis();
+    }
+    void reset(void) {
+        m_ulTimeout = (unsigned long)(-1);
+        m_ulStart = millis();
+    }
+    
+    unsigned long start(void) const {
+        return m_ulStart;
+    }
+    unsigned long timeout(void) const {
+        return m_ulTimeout;
+    }
+    bool hypotheticalTimeout(unsigned long p_ulHypotheticalTimeout) const {
+        return ((millis() - m_ulStart) > p_ulHypotheticalTimeout);
+    }
+
+protected:
+    unsigned long   m_ulStart;
+    unsigned long   m_ulTimeout;
+};
+
+#endif  // __LEATIMEFLAG_H
+
+
+
+
+
+