Add flag to enable ipv6 dual stack support.

PiperOrigin-RevId: 820773346

internal/platform/flags/nearby_platform_feature_flags.h

@@ -61,6 +61,10 @@ constexpr auto kEnableHotspotDhcpRenew =
 constexpr auto kEnableIntelPieSdk =
     flags::Flag<bool>(kConfigPackage, "45428547", false);
 
+// Enable/Disable IPv6 dual stack support on Windows.
+constexpr auto kEnableIpv6DualStack =
+    flags::Flag<bool>(kConfigPackage, "45733519", false);
+
 // Enable/Disable new Bluetooth refactor
 constexpr auto kEnableNewBluetoothRefactor =
     flags::Flag<bool>(kConfigPackage, "45615156", false);

internal/platform/implementation/windows/nearby_client_socket.h

@@ -33,7 +33,7 @@ class NearbyClientSocket {
   ~NearbyClientSocket();
 
   bool Connect(const std::string& ip_address, int port,
-               bool dual_stack = false);
+               bool dual_stack);
   ExceptionOr<ByteArray> Read(std::int64_t size);
   ExceptionOr<size_t> Skip(size_t offset);
   Exception Write(const ByteArray& data);

internal/platform/implementation/windows/nearby_server_socket.h

@@ -29,7 +29,7 @@ class NearbyServerSocket {
   NearbyServerSocket();
   ~NearbyServerSocket();
 
-  bool Listen(const std::string& ip_address, int port, bool dual_stack = false);
+  bool Listen(const std::string& ip_address, int port, bool dual_stack);
   std::unique_ptr<NearbyClientSocket> Accept();
   bool Close();
 

internal/platform/implementation/windows/wifi_hotspot.h

@@ -25,7 +25,6 @@
 #include <cstdint>
 #include <exception>
 #include <memory>
-#include <optional>
 #include <string>
 #include <utility>
 
@@ -35,6 +34,7 @@
 #include "absl/functional/any_invocable.h"
 #include "absl/strings/string_view.h"
 #include "absl/synchronization/mutex.h"
+#include "absl/types/optional.h"
 #include "internal/platform/byte_array.h"
 #include "internal/platform/cancellation_flag.h"
 #include "internal/platform/exception.h"
@@ -45,7 +45,6 @@
 #include "internal/platform/implementation/windows/wifi_hotspot_native.h"
 
 // WinRT headers
-#include "absl/types/optional.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Devices.WiFiDirect.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Foundation.h"
 #include "internal/platform/implementation/windows/generated/winrt/base.h"
@@ -53,8 +52,7 @@
 #include "internal/platform/output_stream.h"
 #include "internal/platform/wifi_credential.h"
 
-namespace nearby {
+namespace nearby::windows {
-namespace windows {
 
 using ::winrt::fire_and_forget;
 using ::winrt::Windows::Devices::WiFiDirect::WiFiDirectAdvertisementPublisher;
@@ -96,8 +94,8 @@ class WifiHotspotSocket : public api::WifiHotspotSocket {
   // Returns Exception::kIo on error, Exception::kSuccess otherwise.
   Exception Close() override { return client_socket_->Close(); }
 
-  bool Connect(const std::string& ip_address, int port) {
+  bool Connect(const std::string& ip_address, int port, bool dual_stack) {
-    return client_socket_->Connect(ip_address, port);
+    return client_socket_->Connect(ip_address, port, dual_stack);
   }
 
  private:
@@ -173,7 +171,7 @@ class WifiHotspotServerSocket : public api::WifiHotspotServerSocket {
   Exception Close() override;
 
   // Binds to local port
-  bool listen();
+  bool Listen(bool dual_stack);
 
   NearbyServerSocket server_socket_;
 
@@ -278,7 +276,6 @@ class WifiHotspotMedium : public api::WifiHotspotMedium {
   WifiHotspotNative wifi_hotspot_native_;
 };
 
-}  // namespace windows
+}  // namespace nearby::windows
-}  // namespace nearby
 
 #endif  // PLATFORM_IMPL_WINDOWS_WIFI_HOTSPOT_H_

internal/platform/implementation/windows/wifi_hotspot_medium.cc

@@ -139,7 +139,10 @@ std::unique_ptr<api::WifiHotspotSocket> WifiHotspotMedium::ConnectToService(
               });
     }
 
-    bool result = wifi_hotspot_socket->Connect(ipv4_address, port);
+    bool dual_stack = NearbyFlags::GetInstance().GetBoolFlag(
+        platform::config_package_nearby::nearby_platform_feature::
+            kEnableIpv6DualStack);
+    bool result = wifi_hotspot_socket->Connect(ipv4_address, port, dual_stack);
     if (!result) {
       LOG(WARNING) << "reconnect to service at " << (i + 1) << "th times";
       Sleep(wifi_hotspot_retry_interval_millis);
@@ -170,7 +173,10 @@ WifiHotspotMedium::ListenForService(int port) {
   auto server_socket = std::make_unique<WifiHotspotServerSocket>(port);
   server_socket_ptr_ = server_socket.get();
 
-  if (server_socket->listen()) {
+  bool dual_stack = NearbyFlags::GetInstance().GetBoolFlag(
+      platform::config_package_nearby::nearby_platform_feature::
+          kEnableIpv6DualStack);
+  if (server_socket->Listen(dual_stack)) {
     medium_status_ |= kMediumStatusAccepting;
 
     // Setup close notifier after listen started.

internal/platform/implementation/windows/wifi_hotspot_server_socket.cc

@@ -38,8 +38,7 @@
 #include "internal/platform/implementation/windows/wifi_hotspot.h"
 #include "internal/platform/logging.h"
 
-namespace nearby {
+namespace nearby::windows {
-namespace windows {
 namespace {
 using ::winrt::Windows::Networking::Connectivity::NetworkInformation;
 using ::winrt::Windows::Networking::HostNameType;
@@ -90,7 +89,7 @@ Exception WifiHotspotServerSocket::Close() {
   return {Exception::kSuccess};
 }
 
-bool WifiHotspotServerSocket::listen() {
+bool WifiHotspotServerSocket::Listen(bool dual_stack) {
   // Get current IP addresses of the device.
   int64_t ip_address_max_retries = NearbyFlags::GetInstance().GetInt64Flag(
       platform::config_package_nearby::nearby_platform_feature::
@@ -118,7 +117,7 @@ bool WifiHotspotServerSocket::listen() {
     return false;
   }
 
-  if (!server_socket_.Listen(hotspot_ipaddr_, port_)) {
+  if (!server_socket_.Listen(hotspot_ipaddr_, port_, dual_stack)) {
     LOG(ERROR) << "Failed to listen socket.";
     return false;
   }
@@ -175,5 +174,4 @@ std::string WifiHotspotServerSocket::GetHotspotIpAddress() const {
   }
 }
 
-}  // namespace windows
+}  // namespace nearby::windows
-}  // namespace nearby

internal/platform/implementation/windows/wifi_hotspot_test.cc

@@ -25,8 +25,7 @@
 #include "internal/platform/logging.h"
 #include "internal/platform/wifi_credential.h"
 
-namespace nearby {
+namespace nearby::windows {
-namespace windows {
 namespace {
 
 TEST(WifiHotspotMedium, DISABLED_StartWifiHotspot) {
@@ -74,7 +73,7 @@ TEST(WifiHotspotMedium, DISABLED_WifiHotspotServerStartListen) {
     EXPECT_TRUE(hotspot_medium.StartWifiHotspot(&hotspot_credentials));
     absl::SleepFor(absl::Seconds(1));
     std::unique_ptr<api::WifiHotspotServerSocket> server_socket =
-        hotspot_medium.ListenForService(0);
+        hotspot_medium.ListenForService(/*port=*/0);
     absl::SleepFor(absl::Seconds(10));
     std::unique_ptr<api::WifiHotspotSocket> client_socket =
         server_socket->Accept();
@@ -140,5 +139,4 @@ TEST(WifiHotspotMedium, DISABLED_ConnectWifiHotspot) {
 }
 
 }  // namespace
-}  // namespace windows
+}  // namespace nearby::windows
-}  // namespace nearby

internal/platform/implementation/windows/wifi_lan.h

@@ -40,7 +40,6 @@
 #include "absl/types/optional.h"
 #include "internal/platform/byte_array.h"
 #include "internal/platform/cancellation_flag.h"
-#include "internal/platform/count_down_latch.h"
 #include "internal/platform/exception.h"
 #include "internal/platform/implementation/cancelable.h"
 #include "internal/platform/implementation/wifi_lan.h"
@@ -49,51 +48,19 @@
 #include "internal/platform/implementation/windows/scheduled_executor.h"
 #include "internal/platform/implementation/windows/wifi_lan_mdns.h"
 #include "internal/platform/input_stream.h"
-#include "internal/platform/mutex.h"
 #include "internal/platform/nsd_service_info.h"
 #include "internal/platform/output_stream.h"
-#include "internal/platform/scheduled_executor.h"
 
 // WinRT headers
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Devices.Enumeration.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Foundation.Collections.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Foundation.h"
-#include "internal/platform/implementation/windows/generated/winrt/Windows.Networking.Connectivity.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Networking.ServiceDiscovery.Dnssd.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Networking.Sockets.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Storage.Streams.h"
 #include "internal/platform/implementation/windows/generated/winrt/base.h"
 
-namespace nearby {
+namespace nearby::windows {
-namespace windows {
-
-using winrt::fire_and_forget;
-using winrt::Windows::Devices::Enumeration::DeviceInformation;
-using winrt::Windows::Devices::Enumeration::DeviceInformationKind;
-using winrt::Windows::Devices::Enumeration::DeviceInformationUpdate;
-using winrt::Windows::Devices::Enumeration::DeviceWatcher;
-using winrt::Windows::Devices::Enumeration::DeviceWatcherStatus;
-using winrt::Windows::Foundation::IInspectable;
-using winrt::Windows::Foundation::Collections::IMapView;
-using winrt::Windows::Networking::HostName;
-using winrt::Windows::Networking::HostNameType;
-using winrt::Windows::Networking::Connectivity::NetworkInformation;
-using winrt::Windows::Networking::ServiceDiscovery::Dnssd::
-    DnssdRegistrationResult;
-using winrt::Windows::Networking::ServiceDiscovery::Dnssd::
-    DnssdRegistrationStatus;
-using winrt::Windows::Networking::ServiceDiscovery::Dnssd::DnssdServiceInstance;
-using winrt::Windows::Networking::Sockets::StreamSocket;
-using winrt::Windows::Networking::Sockets::StreamSocketListener;
-using winrt::Windows::Networking::Sockets::
-    StreamSocketListenerConnectionReceivedEventArgs;
-using winrt::Windows::Networking::Sockets::StreamSocketListenerInformation;
-using winrt::Windows::Storage::Streams::Buffer;
-using winrt::Windows::Storage::Streams::DataReader;
-using winrt::Windows::Storage::Streams::IBuffer;
-using winrt::Windows::Storage::Streams::IInputStream;
-using winrt::Windows::Storage::Streams::InputStreamOptions;
-using winrt::Windows::Storage::Streams::IOutputStream;
 
 // WifiLanSocket wraps the socket functions to read and write stream.
 // In WiFi LAN, A WifiLanSocket will be passed to StartAcceptingConnections's
@@ -102,7 +69,8 @@ using winrt::Windows::Storage::Streams::IOutputStream;
 class WifiLanSocket : public api::WifiLanSocket {
  public:
   WifiLanSocket();
-  explicit WifiLanSocket(StreamSocket socket);
+  explicit WifiLanSocket(
+      winrt::Windows::Networking::Sockets::StreamSocket socket);
   explicit WifiLanSocket(std::unique_ptr<NearbyClientSocket> socket);
   WifiLanSocket(WifiLanSocket&) = default;
   WifiLanSocket(WifiLanSocket&&) = default;
@@ -127,13 +95,14 @@ class WifiLanSocket : public api::WifiLanSocket {
   // Returns Exception::kIo on error, Exception::kSuccess otherwise.
   Exception Close() override;
 
-  bool Connect(const std::string& ip_address, int port);
+  bool Connect(const std::string& ip_address, int port, bool dual_stack);
 
  private:
   // A simple wrapper to handle input stream of socket
   class SocketInputStream : public InputStream {
    public:
-    explicit SocketInputStream(IInputStream input_stream);
+    explicit SocketInputStream(
+        winrt::Windows::Storage::Streams::IInputStream input_stream);
     explicit SocketInputStream(NearbyClientSocket* client_socket);
     ~SocketInputStream() = default;
 
@@ -142,15 +111,16 @@ class WifiLanSocket : public api::WifiLanSocket {
     Exception Close() override;
 
    private:
-    IInputStream input_stream_{nullptr};
+    winrt::Windows::Storage::Streams::IInputStream input_stream_{nullptr};
-    Buffer read_buffer_{nullptr};
+    winrt::Windows::Storage::Streams::Buffer read_buffer_{nullptr};
     NearbyClientSocket* client_socket_{nullptr};
   };
 
   // A simple wrapper to handle output stream of socket
   class SocketOutputStream : public OutputStream {
    public:
-    explicit SocketOutputStream(IOutputStream output_stream);
+    explicit SocketOutputStream(
+        winrt::Windows::Storage::Streams::IOutputStream output_stream);
     explicit SocketOutputStream(NearbyClientSocket* client_socket);
     ~SocketOutputStream() = default;
 
@@ -159,12 +129,12 @@ class WifiLanSocket : public api::WifiLanSocket {
     Exception Close() override;
 
    private:
-    IOutputStream output_stream_{nullptr};
+    winrt::Windows::Storage::Streams::IOutputStream output_stream_{nullptr};
     NearbyClientSocket* client_socket_{nullptr};
   };
 
   // Internal properties
-  StreamSocket stream_soket_{nullptr};
+  winrt::Windows::Networking::Sockets::StreamSocket stream_soket_{nullptr};
   SocketInputStream input_stream_{nullptr};
   SocketOutputStream output_stream_{nullptr};
 
@@ -175,7 +145,7 @@ class WifiLanSocket : public api::WifiLanSocket {
 // accepts connection from clients.
 class WifiLanServerSocket : public api::WifiLanServerSocket {
  public:
-  explicit WifiLanServerSocket(int port = 0);
+  explicit WifiLanServerSocket(int port);
   WifiLanServerSocket(WifiLanServerSocket&) = default;
   WifiLanServerSocket(WifiLanServerSocket&&) = default;
   ~WifiLanServerSocket() override;
@@ -191,7 +161,8 @@ class WifiLanServerSocket : public api::WifiLanServerSocket {
   // Sets port
   void SetPort(int port) { port_ = port; }
 
-  StreamSocketListener GetSocketListener() const {
+  winrt::Windows::Networking::Sockets::StreamSocketListener GetSocketListener()
+      const {
     return stream_socket_listener_;
   }
 
@@ -212,18 +183,21 @@ class WifiLanServerSocket : public api::WifiLanServerSocket {
   Exception Close() override;
 
   // Binds to local port
-  bool listen();
+  bool Listen(bool dual_stack);
 
  private:
   // The listener is accepting incoming connections
-  fire_and_forget Listener_ConnectionReceived(
+  winrt::fire_and_forget Listener_ConnectionReceived(
-      StreamSocketListener listener,
+      winrt::Windows::Networking::Sockets::StreamSocketListener listener,
-      StreamSocketListenerConnectionReceivedEventArgs const& args);
+      winrt::Windows::Networking::Sockets::
+          StreamSocketListenerConnectionReceivedEventArgs const& args);
 
   mutable absl::Mutex mutex_;
   absl::CondVar cond_;
-  std::deque<StreamSocket> pending_sockets_ ABSL_GUARDED_BY(mutex_);
+  std::deque<winrt::Windows::Networking::Sockets::StreamSocket> pending_sockets_
-  StreamSocketListener stream_socket_listener_{nullptr};
+      ABSL_GUARDED_BY(mutex_);
+  winrt::Windows::Networking::Sockets::StreamSocketListener
+      stream_socket_listener_{nullptr};
   winrt::event_token listener_event_token_{};
 
   // Close notifier
@@ -268,7 +242,7 @@ class WifiLanMedium : public api::WifiLanMedium {
       CancellationFlag* cancellation_flag) override;
 
   std::unique_ptr<api::WifiLanServerSocket> ListenForService(
-      int port = 0) override;
+      int port) override;
 
   absl::optional<std::pair<std::int32_t, std::int32_t>> GetDynamicPortRange()
       override {
@@ -318,15 +292,23 @@ class WifiLanMedium : public api::WifiLanMedium {
   // The API gets IP addresses, service name and text attributes of mDNS
   // from these properties,
   ExceptionOr<NsdServiceInfo> GetNsdServiceInformation(
-      IMapView<winrt::hstring, IInspectable> properties, bool is_device_found);
+      winrt::Windows::Foundation::Collections::IMapView<
+          winrt::hstring, winrt::Windows::Foundation::IInspectable>
+          properties,
+      bool is_device_found);
 
   // mDNS callbacks for advertising and discovery
-  fire_and_forget Watcher_DeviceAdded(DeviceWatcher sender,
+  winrt::fire_and_forget Watcher_DeviceAdded(
-                                      DeviceInformation deviceInfo);
+      winrt::Windows::Devices::Enumeration::DeviceWatcher sender,
-  fire_and_forget Watcher_DeviceUpdated(
+      winrt::Windows::Devices::Enumeration::DeviceInformation deviceInfo);
-      DeviceWatcher sender, DeviceInformationUpdate deviceInfoUpdate);
+  winrt::fire_and_forget Watcher_DeviceUpdated(
-  fire_and_forget Watcher_DeviceRemoved(
+      winrt::Windows::Devices::Enumeration::DeviceWatcher sender,
-      DeviceWatcher sender, DeviceInformationUpdate deviceInfoUpdate);
+      winrt::Windows::Devices::Enumeration::DeviceInformationUpdate
+          deviceInfoUpdate);
+  winrt::fire_and_forget Watcher_DeviceRemoved(
+      winrt::Windows::Devices::Enumeration::DeviceWatcher sender,
+      winrt::Windows::Devices::Enumeration::DeviceInformationUpdate
+          deviceInfoUpdate);
 
   // Gets error message from exception pointer
   std::string GetErrorMessage(std::exception_ptr eptr);
@@ -338,11 +320,13 @@ class WifiLanMedium : public api::WifiLanMedium {
   //
 
   // Advertising properties
-  DnssdServiceInstance dnssd_service_instance_{nullptr};
+  winrt::Windows::Networking::ServiceDiscovery::Dnssd::DnssdServiceInstance
-  DnssdRegistrationResult dnssd_regirstraion_result_{nullptr};
+      dnssd_service_instance_{nullptr};
+  winrt::Windows::Networking::ServiceDiscovery::Dnssd::DnssdRegistrationResult
+      dnssd_regirstraion_result_{nullptr};
 
   // Discovery properties
-  DeviceWatcher device_watcher_{nullptr};
+  winrt::Windows::Devices::Enumeration::DeviceWatcher device_watcher_{nullptr};
   winrt::event_token device_watcher_added_event_token;
   winrt::event_token device_watcher_updated_event_token;
   winrt::event_token device_watcher_removed_event_token;
@@ -378,7 +362,6 @@ class WifiLanMedium : public api::WifiLanMedium {
   std::shared_ptr<api::Cancelable> connection_timeout_ = nullptr;
 };
 
-}  // namespace windows
+}  // namespace nearby::windows
-}  // namespace nearby
 
 #endif  // PLATFORM_IMPL_WINDOWS_WIFI_LAN_H_

internal/platform/implementation/windows/wifi_lan_medium.cc

@@ -45,15 +45,25 @@
 #include "internal/platform/exception.h"
 #include "internal/platform/feature_flags.h"
 #include "internal/platform/flags/nearby_platform_feature_flags.h"
+#include "internal/platform/implementation/windows/generated/winrt/Windows.Devices.Enumeration.h"
+#include "internal/platform/implementation/windows/generated/winrt/Windows.Foundation.Collections.h"
+#include "internal/platform/implementation/windows/generated/winrt/Windows.Networking.Connectivity.h"
 #include "internal/platform/implementation/windows/string_utils.h"
 #include "internal/platform/implementation/windows/utils.h"
 #include "internal/platform/logging.h"
 #include "internal/platform/nsd_service_info.h"
 #include "internal/platform/runnable.h"
 
-namespace nearby {
+namespace nearby::windows {
-namespace windows {
 namespace {
+using ::winrt::fire_and_forget;
+using ::winrt::Windows::Devices::Enumeration::DeviceInformation;
+using ::winrt::Windows::Devices::Enumeration::DeviceInformationKind;
+using ::winrt::Windows::Devices::Enumeration::DeviceInformationUpdate;
+using ::winrt::Windows::Devices::Enumeration::DeviceWatcher;
+using ::winrt::Windows::Foundation::Collections::IMapView;
+using ::winrt::Windows::Networking::Connectivity::NetworkInformation;
+
 // mDNS text attributes
 constexpr absl::string_view kDeviceEndpointInfo = "n";
 constexpr absl::string_view kDeviceIpv4 = "IPv4";
@@ -256,7 +266,10 @@ std::unique_ptr<api::WifiLanSocket> WifiLanMedium::ConnectToService(
             });
   }
 
-  bool result = wifi_lan_socket->Connect(ipv4_address, port);
+  bool dual_stack = NearbyFlags::GetInstance().GetBoolFlag(
+      platform::config_package_nearby::nearby_platform_feature::
+          kEnableIpv6DualStack);
+  bool result = wifi_lan_socket->Connect(ipv4_address, port, dual_stack);
   if (!result) {
     LOG(ERROR) << "failed to connect to service " << ipv4_address << ":"
                << port;
@@ -281,7 +294,10 @@ std::unique_ptr<api::WifiLanServerSocket> WifiLanMedium::ListenForService(
       std::make_unique<WifiLanServerSocket>(port);
   WifiLanServerSocket* server_socket_ptr = server_socket.get();
 
-  if (server_socket->listen()) {
+  bool dual_stack = NearbyFlags::GetInstance().GetBoolFlag(
+      platform::config_package_nearby::nearby_platform_feature::
+          kEnableIpv6DualStack);
+  if (server_socket->Listen(dual_stack)) {
     int port = server_socket_ptr->GetPort();
     LOG(INFO) << "started to listen serive on IP:port "
               << ipaddr_4bytes_to_dotdecimal_string(
@@ -652,5 +668,4 @@ std::string WifiLanMedium::GetErrorMessage(std::exception_ptr eptr) {
   }
 }
 
-}  // namespace windows
+}  // namespace nearby::windows
-}  // namespace nearby

internal/platform/implementation/windows/wifi_lan_server_socket.cc

@@ -22,9 +22,7 @@
 
 #include "absl/functional/any_invocable.h"
 #include "absl/synchronization/mutex.h"
-#include "internal/flags/nearby_flags.h"
 #include "internal/platform/exception.h"
-#include "internal/platform/flags/nearby_platform_feature_flags.h"
 #include "internal/platform/implementation/wifi_lan.h"
 #include "internal/platform/implementation/windows/generated/winrt/Windows.Networking.Sockets.h"
 #include "internal/platform/implementation/windows/nearby_server_socket.h"
@@ -32,13 +30,13 @@
 #include "internal/platform/implementation/windows/wifi_lan.h"
 #include "internal/platform/logging.h"
 
-namespace nearby {
+namespace nearby::windows {
-namespace windows {
 namespace {
-
+using ::winrt::fire_and_forget;
-using ::winrt::Windows::Networking::Sockets::SocketQualityOfService;
+using ::winrt::Windows::Networking::Sockets::StreamSocketListener;
-
+using ::winrt::Windows::Networking::Sockets::
-}
+    StreamSocketListenerConnectionReceivedEventArgs;
+}  // namespace
 
 WifiLanServerSocket::WifiLanServerSocket(int port) : port_(port) {}
 
@@ -59,9 +57,7 @@ std::string WifiLanServerSocket::GetIPAddress() const {
 }
 
 // Returns socket port.
-int WifiLanServerSocket::GetPort() const {
+int WifiLanServerSocket::GetPort() const { return server_socket_.GetPort(); }
-  return server_socket_.GetPort();
-}
 
 // Blocks until either:
 // - at least one incoming connection request is available, or
@@ -124,9 +120,9 @@ Exception WifiLanServerSocket::Close() {
   }
 }
 
-bool WifiLanServerSocket::listen() {
+bool WifiLanServerSocket::Listen(bool dual_stack) {
   // Listen on all interfaces.
-  if (!server_socket_.Listen("", port_)) {
+  if (!server_socket_.Listen("", port_, dual_stack)) {
     LOG(ERROR) << "Failed to listen socket at port:" << port_;
     return false;
   }
@@ -148,5 +144,4 @@ fire_and_forget WifiLanServerSocket::Listener_ConnectionReceived(
   return fire_and_forget{};
 }
 
-}  // namespace windows
+}  // namespace nearby::windows
-}  // namespace nearby

internal/platform/implementation/windows/wifi_lan_socket.cc

@@ -23,14 +23,20 @@
 #include "internal/platform/byte_array.h"
 #include "internal/platform/exception.h"
 #include "internal/platform/flags/nearby_platform_feature_flags.h"
+#include "internal/platform/implementation/windows/generated/winrt/Windows.Networking.Sockets.h"
+#include "internal/platform/implementation/windows/generated/winrt/Windows.Storage.Streams.h"
 #include "internal/platform/implementation/windows/nearby_client_socket.h"
 #include "internal/platform/implementation/windows/wifi_lan.h"
 #include "internal/platform/input_stream.h"
 #include "internal/platform/logging.h"
 #include "internal/platform/output_stream.h"
 
-namespace nearby {
+namespace nearby::windows {
-namespace windows {
+namespace {
+using ::winrt::Windows::Networking::Sockets::StreamSocket;
+using ::winrt::Windows::Storage::Streams::IInputStream;
+using ::winrt::Windows::Storage::Streams::IOutputStream;
+}  // namespace
 
 WifiLanSocket::WifiLanSocket() {
   client_socket_ = std::make_unique<NearbyClientSocket>();
@@ -68,8 +74,9 @@ Exception WifiLanSocket::Close() {
   return {Exception::kSuccess};
 }
 
-bool WifiLanSocket::Connect(const std::string& ip_address, int port) {
+bool WifiLanSocket::Connect(const std::string& ip_address,
-  return client_socket_->Connect(ip_address, port);
+                            int port, bool dual_stack) {
+  return client_socket_->Connect(ip_address, port, dual_stack);
 }
 
 // SocketInputStream
@@ -143,5 +150,4 @@ Exception WifiLanSocket::SocketOutputStream::Close() {
   return client_socket_->Close();
 }
 
-}  // namespace windows
+}  // namespace nearby::windows
-}  // namespace nearby