[Python] CommissionOnNetwork blocked if DUT does not have an open commissoning window

src/controller/CHIPDeviceController.h

@@ -189,6 +189,16 @@ class DLL_EXPORT DeviceController : public AbstractDnssdDiscoveryController
         return nullptr;
     }
 
+    System::Layer * GetSystemLayer()
+    {
+        if (mSystemState)
+        {
+            return mSystemState->SystemLayer();
+        }
+
+        return nullptr;
+    }
+
     CHIP_ERROR GetPeerAddressAndPort(NodeId peerId, Inet::IPAddress & addr, uint16_t & port);
 
     /**

src/controller/python/ChipDeviceController-ScriptBinding.cpp

@@ -467,7 +467,10 @@ PyChipError pychip_DeviceController_OnNetworkCommission(chip::Controller::Device
         return ToPyChipError(CHIP_ERROR_INVALID_ARGUMENT);
     }
 
-    sPairingDeviceDiscoveryDelegate.Init(nodeId, setupPasscode, sCommissioningParameters, &sPairingDelegate, devCtrl);
+    sPairingDelegate.SetExpectingPairingComplete(true);
+    CHIP_ERROR err =
+        sPairingDeviceDiscoveryDelegate.Init(nodeId, setupPasscode, sCommissioningParameters, &sPairingDelegate, devCtrl);
+    VerifyOrReturnError(err == CHIP_NO_ERROR, ToPyChipError(err));
     devCtrl->RegisterDeviceDiscoveryDelegate(&sPairingDeviceDiscoveryDelegate);
     return ToPyChipError(devCtrl->DiscoverCommissionableNodes(filter));
 }

src/controller/python/ChipDeviceController-ScriptPairingDeviceDiscoveryDelegate.cpp

@@ -32,6 +32,10 @@ void ScriptPairingDeviceDiscoveryDelegate::OnDiscoveredDevice(const Dnssd::Disco
     nodeData.resolutionData.ipAddress[0].ToString(buf);
     ChipLogProgress(chipTool, "Discovered Device: %s:%u", buf, port);
 
+    // Cancel discovery timer.
+    if (mActiveDeviceCommissioner->GetSystemLayer() != nullptr)
+        mActiveDeviceCommissioner->GetSystemLayer()->CancelTimer(OnDiscoveredTimeout, this);
+
     // Stop Mdns discovery.
     mActiveDeviceCommissioner->RegisterDeviceDiscoveryDelegate(nullptr);
 

src/controller/python/ChipDeviceController-ScriptPairingDeviceDiscoveryDelegate.h

@@ -21,25 +21,44 @@
 #include "ChipDeviceController-ScriptDevicePairingDelegate.h"
 
 #include <controller/CHIPDeviceController.h>
+#include <system/SystemClock.h>
+
+constexpr uint32_t kDeviceDiscoveredTimeout = CHIP_CONFIG_ON_NETWORK_PAIRER_DISCOVERY_TIMEOUT_SECS * chip::kMillisecondsPerSecond;
 
 namespace chip {
 namespace Controller {
 
 class ScriptPairingDeviceDiscoveryDelegate : public DeviceDiscoveryDelegate
 {
 public:
-    void Init(NodeId nodeId, uint32_t setupPasscode, CommissioningParameters commissioningParams,
-              ScriptDevicePairingDelegate * pairingDelegate, DeviceCommissioner * activeDeviceCommissioner)
+    CHIP_ERROR Init(NodeId nodeId, uint32_t setupPasscode, CommissioningParameters commissioningParams,
+                    ScriptDevicePairingDelegate * pairingDelegate, DeviceCommissioner * activeDeviceCommissioner)
     {
         mNodeId                   = nodeId;
         mSetupPasscode            = setupPasscode;
         mParams                   = commissioningParams;
         mPairingDelegate          = pairingDelegate;
         mActiveDeviceCommissioner = activeDeviceCommissioner;
+        VerifyOrReturnError(mActiveDeviceCommissioner != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+        VerifyOrReturnError(mActiveDeviceCommissioner->GetSystemLayer() != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+        return mActiveDeviceCommissioner->GetSystemLayer()->StartTimer(System::Clock::Milliseconds32(kDeviceDiscoveredTimeout),
+                                                                       OnDiscoveredTimeout, this);
     }
     void OnDiscoveredDevice(const Dnssd::DiscoveredNodeData & nodeData);
 
 private:
+    static void OnDiscoveredTimeout(System::Layer * layer, void * context)
+    {
+        ChipLogError(Controller, "Mdns discovery timed out");
+        auto * self = static_cast<ScriptPairingDeviceDiscoveryDelegate *>(context);
+
+        // Stop Mdns discovery.
+        self->mActiveDeviceCommissioner->RegisterDeviceDiscoveryDelegate(nullptr);
+
+        if (self->mPairingDelegate != nullptr)
+            self->mPairingDelegate->OnPairingComplete(CHIP_ERROR_TIMEOUT);
+    }
+
     ScriptDevicePairingDelegate * mPairingDelegate;
     DeviceCommissioner * mActiveDeviceCommissioner = nullptr;
 

src/lib/core/CHIPConfig.h

@@ -1345,6 +1345,18 @@ extern const char CHIP_NON_PRODUCTION_MARKER[];
 #define CHIP_CONFIG_SETUP_CODE_PAIRER_DISCOVERY_TIMEOUT_SECS 30
 #endif // CHIP_CONFIG_SETUP_CODE_PAIRER_DISCOVERY_TIMEOUT_SECS
 
+/**
+ *  @def CHIP_CONFIG_ON_NETWORK_PAIRER_DISCOVERY_TIMEOUT_SECS
+ *
+ *  @brief
+ *    This is the default timeout for the discovery of devices by
+ *    the on network pairer.
+ *
+ */
+#ifndef CHIP_CONFIG_ON_NETWORK_PAIRER_DISCOVERY_TIMEOUT_SECS
+#define CHIP_CONFIG_ON_NETWORK_PAIRER_DISCOVERY_TIMEOUT_SECS 30
+#endif // CHIP_CONFIG_ON_NETWORK_PAIRER_DISCOVERY_TIMEOUT_SECS
+
 /**
  * @def CHIP_CONFIG_NUM_CD_KEY_SLOTS
  *