Add ethernetUpdate and ethernetRestartRequested

Restart Ethernet when disconnected, to free any TCP resources

Author: PaulZC

Firmware/RTK_Everywhere/Developer.ino

@@ -9,8 +9,9 @@
 // Ethernet
 //----------------------------------------
 
-bool ethernetLinkUp()   {return false;}
-void menuEthernet() {systemPrintln("**Ethernet not compiled**");}
+bool ethernetLinkUp() {return false;}
+void menuEthernet()   {systemPrintln("**Ethernet not compiled**");}
+void ethernetUpdate() {}
 
 bool ntpLogIncreasing = false;
 

Firmware/RTK_Everywhere/Ethernet.ino

@@ -188,6 +188,9 @@ void ethernetEvent(arduino_event_id_t event, arduino_event_info_t info)
     case ARDUINO_EVENT_ETH_DISCONNECTED:
         if (settings.enablePrintEthernetDiag && (!inMainMenu))
             systemPrintln("ETH Disconnected");
+        
+        ethernetRestartRequested = true; // Perform ETH.end() to disconnect TCP resources
+        
         break;
 
     case ARDUINO_EVENT_ETH_STOP:
@@ -236,6 +239,20 @@ const char *ethernetGetEventName(arduino_event_id_t event)
     }
 }
 
+//----------------------------------------
+// Update Ethernet. Restart if requested
+//----------------------------------------
+void ethernetUpdate()
+{
+    if (ethernetRestartRequested)
+    {
+        if (settings.enablePrintEthernetDiag && (!inMainMenu))
+            systemPrintln("Restarting Ethernet");
+        ethernetRestart();
+        ethernetRestartRequested = false;
+    }
+}
+
 //----------------------------------------
 // Restart the Ethernet controller
 //----------------------------------------

Firmware/RTK_Everywhere/Network.ino

@@ -2453,6 +2453,9 @@ void networkUpdate()
     // Update the WiFi state
     wifiStationUpdate();
 
+    // Update Ethernet
+    ethernetUpdate();
+
     // Update the network services
     // Start or stop mDNS
     if (networkMdnsRequests != networkMdnsRunning)

Firmware/RTK_Everywhere/RTK_Everywhere.ino

@@ -737,6 +737,7 @@ IPAddress ethernetSubnetMask;
 // };
 volatile struct timeval ethernetNtpTv; // This will hold the time the Ethernet NTP packet arrived
 bool ntpLogIncreasing;
+bool ethernetRestartRequested = false; // Perform ETH.end() to disconnect TCP resources
 #endif // COMPILE_ETHERNET
 
 unsigned long lastEthernetCheck; // Prevents cable checking from continually happening