mDNS restored on mega

EthernetInterface.cpp

@@ -29,6 +29,13 @@
 #include "CommandDistributor.h"
 #include "WiThrottle.h"
 #include "DCCTimer.h"
+#if __has_include ( "MDNS_Generic.h")
+  #include "MDNS_Generic.h"
+  #define DO_MDNS 
+  EthernetUDP udp;
+  MDNS mdns(udp);
+#endif
+
 
 extern void looptimer(unsigned long timeout, const FSH* message);
 
@@ -42,24 +49,45 @@ RingStream * EthernetInterface::outboundRing = nullptr;
  * @brief Setup Ethernet Connection
  * 
  */
-void EthernetInterface::setup()
-{
-    connected=false;
 
+void EthernetInterface::setup()  // STM32 VERSION
+{
+  DIAG(F("Ethernet begin"
+  #ifdef DO_MDNS
+    " with mDNS"
+  #endif 
+  ));
+  
+  #ifdef STM32_ETHERNET
+    // Set a HOSTNAME for the DHCP request - a nice to have, but hard it seems on LWIP for STM32
+    // The default is "lwip", which is **always** set in STM32Ethernet/src/utility/ethernetif.cpp
+    // for some reason. One can edit it to instead read:
+    //      #if LWIP_NETIF_HOSTNAME
+    //      /* Initialize interface hostname */
+    //      if (netif->hostname == NULL)
+    //         netif->hostname = "lwip";
+    //      #endif /* LWIP_NETIF_HOSTNAME */
+    // Which seems more useful! We should propose the patch... so the following line actually works!
+    netif_set_hostname(&gnetif, WIFI_HOSTNAME);   // Should probably be passed in the contructor...
+    #define _MAC_ MacAddressDefault()
+  #else 
     byte mac[6];
     DCCTimer::getSimulatedMacAddress(mac);
-    DIAG(F("Ethernet begin"));
+    #define _MAC_ mac
+  #endif   
   
-#ifdef IP_ADDRESS
+  #ifdef IP_ADDRESS
     static IPAddress myIP(IP_ADDRESS);
-    Ethernet.begin(mac, myIP);
+    Ethernet.begin(_MAC_,myIP);
-#else
+    setup(false);
-    if (Ethernet.begin(mac) == 0)
+  #else
+    if (Ethernet.begin(_MAC_)==0)
   {
     LCD(4,F("IP: No DHCP"));
     return;
   }
-#endif
+  #endif
+
   auto ip = Ethernet.localIP();    // look what IP was obtained (dynamic or static)
   if (!ip) {
     LCD(4,F("IP: None"));
@@ -67,6 +95,8 @@ void EthernetInterface::setup()
   }
   server = new EthernetServer(IP_PORT); // Ethernet Server listening on default port IP_PORT
   server->begin();
+
+  // Arrange display of IP address and port
   #ifdef LCD_DRIVER
     const byte lcdData[]={LCD_DRIVER};
     const bool wideDisplay=lcdData[1]>=24; // data[1] is cols. 
@@ -83,6 +113,12 @@ void EthernetInterface::setup()
   }
  
   outboundRing=new RingStream(OUTBOUND_RING_SIZE);
+  #ifdef DO_MDNS
+    mdns.begin(Ethernet.localIP(), WIFI_HOSTNAME); // hostname
+    mdns.addServiceRecord(WIFI_HOSTNAME "._withrottle", IP_PORT, MDNSServiceTCP);
+  // Not sure if we need to run it once, but just in case!
+    mdns.run();
+  #endif  
   connected=true;    
 }
 
@@ -94,6 +130,7 @@ void EthernetInterface::setup()
 void EthernetInterface::loop()
 {
     if (!connected) return;
+    looptimer(5000, F("E.loop"));
 	      
     static bool warnedAboutLink=false;
     if (Ethernet.linkStatus() == LinkOFF){
@@ -102,6 +139,7 @@ void EthernetInterface::loop()
         warnedAboutLink=true;
         return;
     }
+    looptimer(5000, F("E.loop warn"));
 	  
     // link status must be ok here 
     if (warnedAboutLink) {
@@ -109,6 +147,13 @@ void EthernetInterface::loop()
       warnedAboutLink=false;
     } 
     
+  #ifdef DO_MDNS
+    // Always do this because we don't want traffic to intefere with being found!
+    mdns.run();
+    looptimer(5000, F("E.mdns"));
+	  
+  #endif
+
     //
     switch (Ethernet.maintain()) {
     case 1:
@@ -126,28 +171,46 @@ void EthernetInterface::loop()
         //DIAG(F("maintained"));
         break;
     }
+    looptimer(5000, F("E.maintain"));
 	  
       // get client from the server
-    auto client = server->accept();
+  #if defined (STM32_ETHERNET)
-
+    // STM32Ethernet doesn't use accept(), just available()
+    auto client = server->available();
+    if (client) {
       // check for new client
-    if (client)
-    {
-        if (Diag::ETHERNET) DIAG(F("Ethernet: New client "));
       byte socket;
+      bool sockfound = false;
+      for (socket = 0; socket < MAX_SOCK_NUM; socket++)
+      {
+        if (client == clients[socket])
+        {
+          sockfound = true;
+          break;
+        }
+      }
+      if (!sockfound)
+      { // new client
         for (socket = 0; socket < MAX_SOCK_NUM; socket++)
         {
           if (!clients[socket])
           {
-                // On accept() the EthernetServer doesn't track the client anymore
-                // so we store it in our client array
-                if (Diag::ETHERNET) DIAG(F("Socket %d"),socket);
             clients[socket] = client;
+            sockFound=true;
+            if (Diag::ETHERNET)
+              DIAG(F("Ethernet: New client socket %d"), socket);
             break;
           }
         }
-        if (socket==MAX_SOCK_NUM) DIAG(F("new Ethernet OVERFLOW")); 
       }
+      if (!sockFound) DIAG(F("new Ethernet OVERFLOW"));
+    }
+  
+  #else
+    auto client = server->accept();
+    if (client) clients[client.getSocketNumber()]=client;
+  #endif
+    
 
     // check for incoming data from all possible clients
     for (byte socket = 0; socket < MAX_SOCK_NUM; socket++)

EthernetInterface.h

@@ -45,7 +45,7 @@
  * 
  */
 
-#define MAX_ETH_BUFFER 512
+#define MAX_ETH_BUFFER 128
 #define OUTBOUND_RING_SIZE 2048
 
 class EthernetInterface {

platformio.ini

@@ -104,6 +104,14 @@ lib_deps =
 	${env.lib_deps}
 	arduino-libraries/Ethernet
 	SPI
+	MDNS_Generic
+
+lib_ignore = WiFi101
+			WiFi101_Generic
+			WiFiEspAT
+			WiFiMulti_Generic
+			WiFiNINA_Generic
+
 monitor_speed = 115200
 monitor_echo = yes
 build_flags = 
@@ -246,6 +254,24 @@ monitor_echo = yes
 
 ; Experimental - Ethernet work still in progress
 ;
+[env:Nucleo-F429ZI]
+platform = ststm32
+board = nucleo_f429zi
+framework = arduino
+lib_deps = ${env.lib_deps}
+			stm32duino/STM32Ethernet @ ^1.3.0
+			stm32duino/STM32duino LwIP @ ^2.1.2
+			MDNS_Generic
+lib_ignore = WiFi101
+			WiFi101_Generic
+			WiFiEspAT
+			WiFiMulti_Generic
+			WiFiNINA_Generic
+build_flags = -std=c++17 -Os -g2 -Wunused-variable
+monitor_speed = 115200
+monitor_echo = yes
+upload_protocol = stlink
+
 ; [env:Nucleo-F429ZI]
 ; platform = ststm32
 ; board = nucleo_f429zi