Fix #4268

wled00/bus_manager.cpp

@@ -4,6 +4,7 @@
 
 #include <Arduino.h>
 #include <IPAddress.h>
+#include "src/dependencies/network/Network.h" // for isConnected() (& WiFi)
 #ifdef ARDUINO_ARCH_ESP32
 #include "driver/ledc.h"
 #include "soc/ledc_struct.h"
@@ -692,6 +693,10 @@ BusNetwork::BusNetwork(const BusConfig &bc)
   _hasCCT = false;
   _UDPchannels = _hasWhite + 3;
   _client = IPAddress(bc.pins[0],bc.pins[1],bc.pins[2],bc.pins[3]);
+  #ifdef ARDUINO_ARCH_ESP32
+  _hostname = bc.text;
+  resolveHostname(); // resolve hostname to IP address if needed
+  #endif
   _data = (uint8_t*)d_calloc(_len, _UDPchannels);
   _valid = (_data != nullptr);
   DEBUGBUS_PRINTF_P(PSTR("%successfully inited virtual strip with type %u and IP %u.%u.%u.%u\n"), _valid?"S":"Uns", bc.type, bc.pins[0], bc.pins[1], bc.pins[2], bc.pins[3]);
@@ -726,6 +731,19 @@ size_t BusNetwork::getPins(uint8_t* pinArray) const {
   return 4;
 }
 
+#ifdef ARDUINO_ARCH_ESP32
+void BusNetwork::resolveHostname() {
+  static unsigned long nextResolve = 0;
+  if (Network.isConnected() && millis() > nextResolve && _hostname.length() > 0) {
+    nextResolve = millis() + 600000; // resolve only every 10 minutes
+    IPAddress clnt;
+    if (strlen(cmDNS) > 0) clnt = MDNS.queryHost(_hostname);
+    else WiFi.hostByName(_hostname.c_str(), clnt);
+    if (clnt != IPAddress()) _client = clnt;
+  }
+}
+#endif
+
 // credit @willmmiles & @netmindz https://github.com/wled/WLED/pull/4056
 std::vector<LEDType> BusNetwork::getLEDTypes() {
   return {
@@ -911,6 +929,13 @@ void BusManager::on() {
       }
     }
   }
+  #else
+  for (auto &bus : busses) if (bus->isVirtual()) {
+    // virtual/network bus should check for IP change if hostname is specified
+    // otherwise there are no endpoints to force DNS resolution
+    BusNetwork &b = static_cast<BusNetwork&>(*bus);
+    b.resolveHostname();
+  }
   #endif
   #ifdef ESP32_DATA_IDLE_HIGH
   esp32RMTInvertIdle();

wled00/bus_manager.h

@@ -342,6 +342,10 @@ class BusNetwork : public Bus {
     size_t getBusSize() const override  { return sizeof(BusNetwork) + (isOk() ? _len * _UDPchannels : 0); }
     void   show() override;
     void   cleanup();
+    #ifdef ARDUINO_ARCH_ESP32
+    void   resolveHostname();
+    const String getCustomText() const override { return _hostname; }
+    #endif
 
     static std::vector<LEDType> getLEDTypes();
 
@@ -351,6 +355,9 @@ class BusNetwork : public Bus {
     uint8_t   _UDPchannels;
     bool      _broadcastLock;
     uint8_t   *_data;
+    #ifdef ARDUINO_ARCH_ESP32
+    String    _hostname;
+    #endif
 };
 
 

wled00/data/settings_leds.htm

@@ -52,6 +52,11 @@
 			maxL  = l; // maxL - max LEDs (will serve to determine ESP >1664 == ESP32)
 			maxCO = o; // maxCO - max Color Order mappings
 		}
+		function is8266() { return maxA ==  5 && maxD ==  3; } // NOTE: see const.h
+		function is32()   { return maxA == 16 && maxD == 16; } // NOTE: see const.h
+		function isC3()   { return maxA ==  6 && maxD ==  2; } // NOTE: see const.h
+		function isS2()   { return maxA ==  8 && maxD == 12 && maxV == 4; } // NOTE: see const.h
+		function isS3()   { return maxA ==  8 && maxD == 12 && maxV == 6; } // NOTE: see const.h
 		function pinsOK() {
 			var ok = true;
 			var nList = d.Sf.querySelectorAll("#mLC input[name^=L]");
@@ -281,6 +286,8 @@
 				gId("dig"+n+"l").style.display = (isD2P(t) || isPWM(t)) ? "inline":"none";  // bus clock speed / PWM speed (relative) (not On/Off)
 				gId("rev"+n).innerHTML = isAna(t) ? "Inverted output":"Reversed";           // change reverse text for analog else (rotated 180°)
 				//gId("psd"+n).innerHTML = isAna(t) ? "Index:":"Start:";                      // change analog start description
+				gId("net"+n+"h").style.display = isNet(t) && !is8266() ? "block" : "none";  // show host field for network types except on ESP8266
+				if (!isNet(t) || is8266()) d.Sf["HS"+n].value = "";                         // cleart host field if not network type or ESP8266
 			});
 			// display global white channel overrides
 			gId("wc").style.display = (gRGBW) ? 'inline':'none';
@@ -463,6 +470,7 @@ mA/LED: <select name="LAsel${s}" onchange="enLA(this,'${s}');UI();">
 <span id="p2d${s}"></span><input type="number" name="L2${s}" class="s" onchange="UI();pinUpd(this);"/>
 <span id="p3d${s}"></span><input type="number" name="L3${s}" class="s" onchange="UI();pinUpd(this);"/>
 <span id="p4d${s}"></span><input type="number" name="L4${s}" class="s" onchange="UI();pinUpd(this);"/>
+<div id="net${s}h" class="hide">Host: <input type="text" name="HS${s}" maxlength="32" pattern="[a-zA-Z0-9_\\-]*" onchange="UI()"/>.local</div>
 <div id="dig${s}r" style="display:inline"><br><span id="rev${s}">Reversed</span>: <input type="checkbox" name="CV${s}"></div>
 <div id="dig${s}s" style="display:inline"><br>Skip first LEDs: <input type="number" name="SL${s}" min="0" max="255" value="0" oninput="UI()"></div>
 <div id="dig${s}f" style="display:inline"><br><span id="off${s}">Off Refresh</span>: <input id="rf${s}" type="checkbox" name="RF${s}"></div>