esp32 lock-app mdns server start at connectivity change (#7723)

project-chip · Jun 24, 2021 · 6593069 · 6593069
1 parent 678e007
commit 6593069
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/examples/lock-app/esp32/main/DeviceCallbacks.cpp b/examples/lock-app/esp32/main/DeviceCallbacks.cpp
@@ -31,6 +31,7 @@
 #include "esp_log.h"
 #include <app/common/gen/attribute-id.h>
 #include <app/common/gen/cluster-id.h>
+#include <app/server/Mdns.h>
 #include <support/CodeUtils.h>
 
 static const char * TAG = "lock-devicecallbacks";
@@ -51,6 +52,18 @@ void DeviceCallbacks::DeviceEventCallback(const ChipDeviceEvent * event, intptr_
     case DeviceEventType::kSessionEstablished:
         OnSessionEstablished(event);
         break;
+
+    case DeviceEventType::kInterfaceIpAddressChanged:
+        if ((event->InterfaceIpAddressChanged.Type == InterfaceIpChangeType::kIpV4_Assigned) ||
+            (event->InterfaceIpAddressChanged.Type == InterfaceIpChangeType::kIpV6_Assigned))
+        {
+            // MDNS server restart on any ip assignment: if link local ipv6 is configured, that
+            // will not trigger a 'internet connectivity change' as there is no internet
+            // connectivity. MDNS still wants to refresh its listening interfaces to include the
+            // newly selected address.
+            chip::app::Mdns::StartServer();
+        }
+        break;
     }
 
     ESP_LOGI(TAG, "Current free heap: %d\n", heap_caps_get_free_size(MALLOC_CAP_8BIT));
@@ -80,6 +93,7 @@ void DeviceCallbacks::OnInternetConnectivityChange(const ChipDeviceEvent * event
     if (event->InternetConnectivityChange.IPv4 == kConnectivity_Established)
     {
         ESP_LOGI(TAG, "Server ready at: %s:%d", event->InternetConnectivityChange.address, CHIP_PORT);
+        chip::app::Mdns::StartServer();
     }
     else if (event->InternetConnectivityChange.IPv4 == kConnectivity_Lost)
     {
@@ -88,6 +102,7 @@ void DeviceCallbacks::OnInternetConnectivityChange(const ChipDeviceEvent * event
     if (event->InternetConnectivityChange.IPv6 == kConnectivity_Established)
     {
         ESP_LOGI(TAG, "IPv6 Server ready...");
+        chip::app::Mdns::StartServer();
     }
     else if (event->InternetConnectivityChange.IPv6 == kConnectivity_Lost)
     {