[darwin] Use DNSServiceReconfirmRecord for A and AAAA records to miti…

src/controller/SetUpCodePairer.cpp

@@ -223,7 +223,7 @@ bool SetUpCodePairer::ConnectToDiscoveredDevice()
         // Remove it from the queue before we try to connect, in case the
         // connection attempt fails and calls right back into us to try the next
         // thing.
-        RendezvousParameters params(mDiscoveredParameters.front());
+        SetUpCodePairerParameters params(mDiscoveredParameters.front());
         mDiscoveredParameters.pop();
 
         params.SetSetupPINCode(mSetUpPINCode);
@@ -237,6 +237,11 @@ bool SetUpCodePairer::ConnectToDiscoveredDevice()
         // Handle possibly-sync call backs from attempts to establish PASE.
         ExpectPASEEstablishment();
 
+        if (params.GetPeerAddress().GetTransportType() == Transport::Type::kUdp)
+        {
+            mCurrentPASEParameters.SetValue(params);
+        }
+
         CHIP_ERROR err;
         if (mConnectionType == SetupCodePairerBehaviour::kCommission)
         {
@@ -267,9 +272,7 @@ void SetUpCodePairer::OnDiscoveredDeviceOverBle(BLE_CONNECTION_OBJECT connObj)
 
     mWaitingForDiscovery[kBLETransport] = false;
 
-    Transport::PeerAddress peerAddress = Transport::PeerAddress::BLE();
-    mDiscoveredParameters.emplace();
-    mDiscoveredParameters.back().SetPeerAddress(peerAddress).SetConnectionObject(connObj);
+    mDiscoveredParameters.emplace(connObj);
     ConnectToDiscoveredDevice();
 }
 
@@ -338,25 +341,7 @@ void SetUpCodePairer::NotifyCommissionableDeviceDiscovered(const Dnssd::Discover
 
     ChipLogProgress(Controller, "Discovered device to be commissioned over DNS-SD");
 
-    Inet::InterfaceId interfaceId =
-        nodeData.resolutionData.ipAddress[0].IsIPv6LinkLocal() ? nodeData.resolutionData.interfaceId : Inet::InterfaceId::Null();
-    Transport::PeerAddress peerAddress =
-        Transport::PeerAddress::UDP(nodeData.resolutionData.ipAddress[0], nodeData.resolutionData.port, interfaceId);
-    mDiscoveredParameters.emplace();
-    mDiscoveredParameters.back().SetPeerAddress(peerAddress);
-
-    if (nodeData.resolutionData.mrpRetryIntervalIdle.HasValue())
-    {
-        auto interval = nodeData.resolutionData.mrpRetryIntervalIdle.Value();
-        mDiscoveredParameters.back().SetIdleInterval(interval);
-    }
-
-    if (nodeData.resolutionData.mrpRetryIntervalActive.HasValue())
-    {
-        auto interval = nodeData.resolutionData.mrpRetryIntervalActive.Value();
-        mDiscoveredParameters.back().SetActiveInterval(interval);
-    }
-
+    mDiscoveredParameters.emplace(nodeData.resolutionData);
     ConnectToDiscoveredDevice();
 }
 
@@ -412,6 +397,7 @@ void SetUpCodePairer::ResetDiscoveryState()
         mDiscoveredParameters.pop();
     }
 
+    mCurrentPASEParameters.ClearValue();
     mLastPASEError = CHIP_NO_ERROR;
 }
 
@@ -488,6 +474,21 @@ void SetUpCodePairer::OnPairingComplete(CHIP_ERROR error)
         return;
     }
 
+    // It may happen that there is a stale DNS entry. If so, ReconfirmRecord will flush
+    // the record from the daemon cache once it determines that it is invalid.
+    // It may not help for this particular resolve, but may help subsequent resolves.
+    if (CHIP_ERROR_TIMEOUT == error && mCurrentPASEParameters.HasValue())
+    {
+        const auto & params = mCurrentPASEParameters.Value();
+        auto & ip           = params.GetPeerAddress().GetIPAddress();
+        auto err            = Dnssd::Resolver::Instance().ReconfirmRecord(params.mHostName, ip, params.mInterfaceId);
+        if (CHIP_NO_ERROR != err && CHIP_ERROR_NOT_IMPLEMENTED != err)
+        {
+            ChipLogError(Controller, "Error when verifying the validity of an address: %" CHIP_ERROR_FORMAT, err.Format());
+        }
+    }
+    mCurrentPASEParameters.ClearValue();
+
     // We failed to establish PASE.  Try the next thing we have discovered, if
     // any.
     if (TryNextRendezvousParameters())
@@ -541,5 +542,32 @@ void SetUpCodePairer::OnDeviceDiscoveredTimeoutCallback(System::Layer * layer, v
     }
 }
 
+SetUpCodePairerParameters::SetUpCodePairerParameters(const Dnssd::CommonResolutionData & data)
+{
+    mInterfaceId = data.interfaceId;
+    Platform::CopyString(mHostName, data.hostName);
+
+    auto & ip = data.ipAddress[0];
+    SetPeerAddress(Transport::PeerAddress::UDP(ip, data.port, ip.IsIPv6LinkLocal() ? data.interfaceId : Inet::InterfaceId::Null()));
+
+    if (data.mrpRetryIntervalIdle.HasValue())
+    {
+        SetIdleInterval(data.mrpRetryIntervalIdle.Value());
+    }
+
+    if (data.mrpRetryIntervalActive.HasValue())
+    {
+        SetActiveInterval(data.mrpRetryIntervalActive.Value());
+    }
+}
+
+#if CONFIG_NETWORK_LAYER_BLE
+SetUpCodePairerParameters::SetUpCodePairerParameters(BLE_CONNECTION_OBJECT connObj)
+{
+    Transport::PeerAddress peerAddress = Transport::PeerAddress::BLE();
+    SetPeerAddress(peerAddress).SetConnectionObject(connObj);
+}
+#endif // CONFIG_NETWORK_LAYER_BLE
+
 } // namespace Controller
 } // namespace chip

src/controller/SetUpCodePairer.h

@@ -48,6 +48,17 @@ namespace Controller {
 
 class DeviceCommissioner;
 
+class SetUpCodePairerParameters : public RendezvousParameters
+{
+public:
+    SetUpCodePairerParameters(const Dnssd::CommonResolutionData & data);
+#if CONFIG_NETWORK_LAYER_BLE
+    SetUpCodePairerParameters(BLE_CONNECTION_OBJECT connObj);
+#endif // CONFIG_NETWORK_LAYER_BLE
+    char mHostName[Dnssd::kHostNameMaxLength + 1] = {};
+    Inet::InterfaceId mInterfaceId;
+};
+
 enum class SetupCodePairerBehaviour : uint8_t
 {
     kCommission,
@@ -180,7 +191,12 @@ class DLL_EXPORT SetUpCodePairer : public DevicePairingDelegate
     // Queue of things we have discovered but not tried connecting to yet.  The
     // general discovery/pairing process will terminate once this queue is empty
     // and all the booleans in mWaitingForDiscovery are false.
-    std::queue<RendezvousParameters> mDiscoveredParameters;
+    std::queue<SetUpCodePairerParameters> mDiscoveredParameters;
+
+    // Current thing we are trying to connect to over UDP. If a PASE connection fails with
+    // a CHIP_ERROR_TIMEOUT, the discovered parameters will be used to ask the
+    // mdns daemon to invalidate the
+    Optional<SetUpCodePairerParameters> mCurrentPASEParameters;
 
     // mWaitingForPASE is true if we have called either
     // EstablishPASEConnection or PairDevice on mCommissioner and are now just

src/controller/tests/TestCommissionableNodeController.cpp

@@ -43,6 +43,10 @@ class MockResolver : public Resolver
         return CHIP_ERROR_NOT_IMPLEMENTED;
     }
     CHIP_ERROR StopDiscovery() override { return CHIP_ERROR_NOT_IMPLEMENTED; }
+    CHIP_ERROR ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId) override
+    {
+        return CHIP_ERROR_NOT_IMPLEMENTED;
+    }
 
     CHIP_ERROR InitStatus                  = CHIP_NO_ERROR;
     CHIP_ERROR ResolveNodeIdStatus         = CHIP_NO_ERROR;

src/lib/dnssd/Discovery_ImplPlatform.cpp

@@ -641,6 +641,12 @@ CHIP_ERROR DiscoveryImplPlatform::StopDiscovery()
     return mResolverProxy.StopDiscovery();
 }
 
+CHIP_ERROR DiscoveryImplPlatform::ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId)
+{
+    ReturnErrorOnFailure(InitImpl());
+    return mResolverProxy.ReconfirmRecord(hostname, address, interfaceId);
+}
+
 DiscoveryImplPlatform & DiscoveryImplPlatform::GetInstance()
 {
     return sManager;
@@ -750,5 +756,10 @@ CHIP_ERROR ResolverProxy::StopDiscovery()
     return err;
 }
 
+CHIP_ERROR ResolverProxy::ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId)
+{
+    return ChipDnssdReconfirmRecord(hostname, address, interfaceId);
+}
+
 } // namespace Dnssd
 } // namespace chip

src/lib/dnssd/Discovery_ImplPlatform.h

@@ -58,6 +58,7 @@ class DiscoveryImplPlatform : public ServiceAdvertiser, public Resolver
     CHIP_ERROR DiscoverCommissionableNodes(DiscoveryFilter filter = DiscoveryFilter()) override;
     CHIP_ERROR DiscoverCommissioners(DiscoveryFilter filter = DiscoveryFilter()) override;
     CHIP_ERROR StopDiscovery() override;
+    CHIP_ERROR ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId) override;
 
     static DiscoveryImplPlatform & GetInstance();
 

src/lib/dnssd/Resolver.h

@@ -398,6 +398,12 @@ class Resolver
      */
     virtual CHIP_ERROR StopDiscovery() = 0;
 
+    /**
+     * Verify the validity of an address that appears to be out of date (for example
+     * because establishing a connection to it has failed).
+     */
+    virtual CHIP_ERROR ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId) = 0;
+
     /**
      * Provides the system-wide implementation of the service resolver
      */

src/lib/dnssd/ResolverProxy.h

@@ -153,6 +153,7 @@ class ResolverProxy : public Resolver
     CHIP_ERROR DiscoverCommissionableNodes(DiscoveryFilter filter = DiscoveryFilter()) override;
     CHIP_ERROR DiscoverCommissioners(DiscoveryFilter filter = DiscoveryFilter()) override;
     CHIP_ERROR StopDiscovery() override;
+    CHIP_ERROR ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId) override;
 
 private:
     ResolverDelegateProxy * mDelegate                            = nullptr;

src/lib/dnssd/Resolver_ImplMinimalMdns.cpp

@@ -282,6 +282,7 @@ class MinMdnsResolver : public Resolver, public MdnsPacketDelegate
     CHIP_ERROR DiscoverCommissionableNodes(DiscoveryFilter filter = DiscoveryFilter()) override;
     CHIP_ERROR DiscoverCommissioners(DiscoveryFilter filter = DiscoveryFilter()) override;
     CHIP_ERROR StopDiscovery() override;
+    CHIP_ERROR ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId) override;
 
 private:
     OperationalResolveDelegate * mOperationalDelegate     = nullptr;
@@ -639,6 +640,11 @@ CHIP_ERROR MinMdnsResolver::StopDiscovery()
     return mActiveResolves.CompleteAllBrowses();
 }
 
+CHIP_ERROR MinMdnsResolver::ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId)
+{
+    return CHIP_ERROR_NOT_IMPLEMENTED;
+}
+
 CHIP_ERROR MinMdnsResolver::BrowseNodes(DiscoveryType type, DiscoveryFilter filter)
 {
     mActiveResolves.MarkPending(filter, type);
@@ -723,5 +729,10 @@ CHIP_ERROR ResolverProxy::StopDiscovery()
     return CHIP_ERROR_NOT_IMPLEMENTED;
 }
 
+CHIP_ERROR ResolverProxy::ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId)
+{
+    return CHIP_ERROR_NOT_IMPLEMENTED;
+}
+
 } // namespace Dnssd
 } // namespace chip

src/lib/dnssd/Resolver_ImplNone.cpp

@@ -43,6 +43,10 @@ class NoneResolver : public Resolver
     }
     CHIP_ERROR DiscoverCommissioners(DiscoveryFilter filter = DiscoveryFilter()) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR StopDiscovery() override { return CHIP_ERROR_NOT_IMPLEMENTED; }
+    CHIP_ERROR ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId) override
+    {
+        return CHIP_ERROR_NOT_IMPLEMENTED;
+    }
 };
 
 NoneResolver gResolver;
@@ -79,5 +83,10 @@ CHIP_ERROR ResolverProxy::StopDiscovery()
     return CHIP_ERROR_NOT_IMPLEMENTED;
 }
 
+CHIP_ERROR ResolverProxy::ReconfirmRecord(const char * hostname, Inet::IPAddress address, Inet::InterfaceId interfaceId)
+{
+    return CHIP_ERROR_NOT_IMPLEMENTED;
+}
+
 } // namespace Dnssd
 } // namespace chip

src/lib/dnssd/platform/Dnssd.h

@@ -245,5 +245,15 @@ CHIP_ERROR ChipDnssdStopBrowse(intptr_t browseIdentifier);
 CHIP_ERROR ChipDnssdResolve(DnssdService * browseResult, chip::Inet::InterfaceId interface, DnssdResolveCallback callback,
                             void * context);
 
+/**
+ * This function asks the mdns daemon to asynchronously reconfirm an address that appears to be out of date.
+ *
+ * @param[in] hostname      The hostname the address belongs to.
+ * @param[in] address       The address to reconfirm.
+ * @param[in] interfaceId   The interfaceId of the address.
+ *
+ */
+CHIP_ERROR ChipDnssdReconfirmRecord(const char * hostname, chip::Inet::IPAddress address, chip::Inet::InterfaceId interface);
+
 } // namespace Dnssd
 } // namespace chip

src/platform/Darwin/DnssdImpl.cpp

@@ -36,10 +36,11 @@ constexpr const char * kLocalDot    = "local.";
 constexpr const char * kProtocolTcp = "._tcp";
 constexpr const char * kProtocolUdp = "._udp";
 
-constexpr DNSServiceFlags kRegisterFlags    = kDNSServiceFlagsNoAutoRename;
-constexpr DNSServiceFlags kBrowseFlags      = 0;
-constexpr DNSServiceFlags kGetAddrInfoFlags = kDNSServiceFlagsTimeout | kDNSServiceFlagsShareConnection;
-constexpr DNSServiceFlags kResolveFlags     = kDNSServiceFlagsShareConnection;
+constexpr DNSServiceFlags kRegisterFlags        = kDNSServiceFlagsNoAutoRename;
+constexpr DNSServiceFlags kBrowseFlags          = 0;
+constexpr DNSServiceFlags kGetAddrInfoFlags     = kDNSServiceFlagsTimeout | kDNSServiceFlagsShareConnection;
+constexpr DNSServiceFlags kResolveFlags         = kDNSServiceFlagsShareConnection;
+constexpr DNSServiceFlags kReconfirmRecordFlags = 0;
 
 bool IsSupportedProtocol(DnssdServiceProtocol protocol)
 {
@@ -446,5 +447,49 @@ CHIP_ERROR ChipDnssdResolve(DnssdService * service, chip::Inet::InterfaceId inte
     return Resolve(context, callback, interfaceId, service->mAddressType, regtype.c_str(), service->mName);
 }
 
+CHIP_ERROR ChipDnssdReconfirmRecord(const char * hostname, chip::Inet::IPAddress address, chip::Inet::InterfaceId interface)
+{
+    VerifyOrReturnError(hostname != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+
+    auto interfaceId = interface.GetPlatformInterface();
+    auto rrclass     = kDNSServiceClass_IN;
+    auto fullname    = GetHostNameWithDomain(hostname);
+
+    uint16_t rrtype;
+    uint16_t rdlen;
+    const void * rdata;
+
+    in6_addr ipv6;
+#if INET_CONFIG_ENABLE_IPV4
+    in_addr ipv4;
+#endif // INET_CONFIG_ENABLE_IPV4
+
+    if (address.IsIPv6())
+    {
+        ipv6   = address.ToIPv6();
+        rrtype = kDNSServiceType_AAAA;
+        rdlen  = static_cast<uint16_t>(sizeof(in6_addr));
+        rdata  = &ipv6;
+    }
+#if INET_CONFIG_ENABLE_IPV4
+    else if (address.IsIPv4())
+    {
+        ipv4   = address.ToIPv4();
+        rrtype = kDNSServiceType_A;
+        rdlen  = static_cast<uint16_t>(sizeof(in_addr));
+        rdata  = &ipv4;
+    }
+#endif // INET_CONFIG_ENABLE_IPV4
+    else
+    {
+        return CHIP_ERROR_INVALID_ARGUMENT;
+    }
+
+    auto error = DNSServiceReconfirmRecord(kReconfirmRecordFlags, interfaceId, fullname.c_str(), rrtype, rrclass, rdlen, rdata);
+    LogOnFailure(__func__, error);
+
+    return Error::ToChipError(error);
+}
+
 } // namespace Dnssd
 } // namespace chip

src/platform/ESP32/DnssdImpl.cpp

@@ -511,5 +511,10 @@ CHIP_ERROR ChipDnssdResolve(DnssdService * service, chip::Inet::InterfaceId inte
     return error;
 }
 
+CHIP_ERROR ChipDnssdReconfirmRecord(const char * hostname, chip::Inet::IPAddress address, chip::Inet::InterfaceId interface)
+{
+    return CHIP_ERROR_NOT_IMPLEMENTED;
+}
+
 } // namespace Dnssd
 } // namespace chip

src/platform/Linux/DnssdImpl.cpp

@@ -872,5 +872,10 @@ CHIP_ERROR ChipDnssdResolve(DnssdService * browseResult, chip::Inet::InterfaceId
                                             browseResult->mAddressType, Inet::IPAddressType::kAny, interface, callback, context);
 }
 
+CHIP_ERROR ChipDnssdReconfirmRecord(const char * hostname, chip::Inet::IPAddress address, chip::Inet::InterfaceId interface)
+{
+    return CHIP_ERROR_NOT_IMPLEMENTED;
+}
+
 } // namespace Dnssd
 } // namespace chip

src/platform/OpenThread/DnssdImpl.cpp

@@ -122,5 +122,10 @@ CHIP_ERROR ChipDnssdResolve(DnssdService * browseResult, Inet::InterfaceId inter
 #endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT && CHIP_DEVICE_CONFIG_ENABLE_THREAD_DNS_CLIENT
 }
 
+CHIP_ERROR ChipDnssdReconfirmRecord(const char * hostname, chip::Inet::IPAddress address, chip::Inet::InterfaceId interface)
+{
+    return CHIP_ERROR_NOT_IMPLEMENTED;
+}
+
 } // namespace Dnssd
 } // namespace chip

src/platform/Tizen/DnssdImpl.cpp

@@ -823,5 +823,10 @@ CHIP_ERROR ChipDnssdResolve(DnssdService * browseResult, chip::Inet::InterfaceId
     return DnssdTizen::GetInstance().Resolve(*browseResult, interface, callback, context);
 }
 
+CHIP_ERROR ChipDnssdReconfirmRecord(const char * hostname, chip::Inet::IPAddress address, chip::Inet::InterfaceId interface)
+{
+    return CHIP_ERROR_NOT_IMPLEMENTED;
+}
+
 } // namespace Dnssd
 } // namespace chip