Use DBUS to detect presence of Wi-Fi devices.

react/src/PiPedalModel.tsx

@@ -56,6 +56,18 @@ export enum State {
     HotspotChanging,
 };
 
+function getErrorMessage(error: any)
+{
+    if (error instanceof Error)
+    {
+        return (error as Error).message;
+    }
+    if (!error)
+    {
+        return "";
+    }
+    return error.toString();
+}
 class UpdatedError extends Error {
 };
 export function wantsReloadingScreen(state: State) {
@@ -742,6 +754,10 @@ export class PiPedalModel //implements PiPedalModel
         } else if (message === "onNetworkChanging") {
             this.onNetworkChanging(body as boolean);
         }
+        else if (message === "onHasWifiChanged") {
+            let hasWifi = body as boolean;
+            this.hasWifiDevice.set(hasWifi);
+        }        
     }
 
 
@@ -912,7 +928,7 @@ export class PiPedalModel //implements PiPedalModel
             }
         }
     }
-    onSocketReconnected() {
+    async onSocketReconnected(): Promise<void> {
         this.cancelOnNetworkChanging();
         this.cancelAndroidReconnectTimer();
 
@@ -920,97 +936,20 @@ export class PiPedalModel //implements PiPedalModel
             this.androidHost?.setDisconnected(false);
         }
 
-        this.expectDisconnect(ReconnectReason.Disconnected); // the next expected disconnect will be an actual disconnect.
         if (this.visibilityState.get() === VisibilityState.Hidden) return;
-
+        
         // reload state, but not configuration.
-        this.getWebSocket().request<number>("hello")
-            .then(clientId => {
-                this.clientId = clientId;
-                return this.getUpdateStatus(); // detects whether server has been upgraded.
-            })
-            .then((updateStatus) => {
+        this.clientId = await this.getWebSocket().request<number>("hello");
 
-                return this.getWebSocket().request<any>("plugins");
-            })
-            .then(data => {
-                this.ui_plugins.set(UiPlugin.deserialize_array(data));
-                return this.getWebSocket().request<Pedalboard>("currentPedalboard");
-            })
-            .then(data => {
-                this.setModelPedalboard(new Pedalboard().deserialize(data));
+        let newServerVersion =  this.serverVersion = await this.getWebSocket().request<PiPedalVersion>("version");
+        if (newServerVersion.serverVersion !== this.serverVersion.serverVersion)
+        {
+            this.reloadPage();
+            return;
+        }
 
-                return this.getWebSocket().request<boolean>("getShowStatusMonitor");
-            })
-            .then(data => {
-                this.showStatusMonitor.set(data);
-
-                return this.getWebSocket().request<any>("getWifiConfigSettings");
-            })
-            .then(data => {
-                this.wifiConfigSettings.set(new WifiConfigSettings().deserialize(data));
-
-
-                return this.getWebSocket().request<any>("getWifiDirectConfigSettings");
-            })
-            .then(data => {
-                this.wifiDirectConfigSettings.set(new WifiDirectConfigSettings().deserialize(data));
-
-
-                return this.getWebSocket().request<any>("getGovernorSettings");
-            })
-            .then(data => {
-                this.governorSettings.set(new GovernorSettings().deserialize(data));
-
-
-                return this.getWebSocket().request<any>("getJackServerSettings");
-            })
-            .then(data => {
-                this.jackServerSettings.set(new JackServerSettings().deserialize(data));
-
-                return this.getWebSocket().request<PresetIndex>("getPresets");
-            })
-            .then((data) => {
-                this.presets.set(new PresetIndex().deserialize(data));
-
-                return this.getWebSocket().request<JackConfiguration>("getJackConfiguration");
-            })
-            .then((data) => {
-                // data.isValid = false;
-                // data.errorState = "Jack Audio server not running."
-
-                this.jackConfiguration.set(new JackConfiguration().deserialize(data));
-
-                return this.getWebSocket().request<any>("getJackSettings");
-            })
-            .then((data) => {
-                this.jackSettings.set(new JackChannelSelection().deserialize(data));
-
-                return this.getWebSocket().request<any>("getBankIndex");
-            })
-            .then((data) => {
-                this.banks.set(new BankIndex().deserialize(data));
-
-                return this.getWebSocket().request<FavoritesList>("getFavorites");
-            })
-            .then((data) => {
-                this.favorites.set(data);
-
-                return this.getWebSocket().request<MidiBinding[]>("getSystemMidiBindings");
-            })
-            .then((data) => {
-                let bindings = MidiBinding.deserialize_array(data);
-                this.systemMidiBindings.set(bindings);
-
-                this.setState(State.Ready);
-            })
-            .catch((what) => {
-                if (what instanceof UpdatedError) {
-                    // do nothing. a page reload is imminent and unavoidable as soon as we return to the dispatcher.
-                } else {
-                    this.onError(what.toString());
-                }
-            })
+        // anything could have changed while we were disconnected.
+        await this.loadServerState();
     }
     makeSocketServerUrl(hostName: string, port: number): string {
         return "ws://" + hostName + ":" + port + "/pipedal";
@@ -1026,179 +965,142 @@ export class PiPedalModel //implements PiPedalModel
     debug: boolean = false;
     enableAutoUpdate: boolean = false;
 
-    requestConfig(): Promise<boolean> {
-        const myRequest = new Request(this.varRequest('config.json'));
-        return fetch(myRequest)
-            .then(
-                (response) => {
-                    return response.json();
-                }
-            )
-            .then(data => {
-                this.enableAutoUpdate = !!data.enable_auto_update;
-                this.hasWifiDevice.set(!!data.has_wifi_device);
-                if (data.max_upload_size) {
-                    this.maxPresetUploadSize = data.max_upload_size;
-                }
-                if (data.fakeAndroid) {
-                    this.androidHost = new FakeAndroidHost();
-                }
-                this.debug = !!data.debug;
-                let { socket_server_port, socket_server_address, max_upload_size } = data;
-                if ((!socket_server_address) || socket_server_address === "*") {
-                    socket_server_address = window.location.hostname;
-                }
-                if (!socket_server_port) socket_server_port = 8080;
-                let socket_server = this.makeSocketServerUrl(socket_server_address, socket_server_port);
-                let var_server_url = this.makeVarServerUrl("http", socket_server_address, socket_server_port);
+
+    async requestConfig(): Promise<boolean> {
+
+        try {
+            const  myRequest = new Request(this.varRequest('config.json'));
+            let response: Response = await fetch(myRequest);
+            let data = await response.json();
+
+            this.enableAutoUpdate = !!data.enable_auto_update;
+            this.hasWifiDevice.set(!!data.has_wifi_device);
+            if (data.max_upload_size) {
+                this.maxPresetUploadSize = data.max_upload_size;
+            }
+            if (data.fakeAndroid) {
+                this.androidHost = new FakeAndroidHost();
+            }
+            this.debug = !!data.debug;
+            let { socket_server_port, socket_server_address, max_upload_size } = data;
+            if ((!socket_server_address) || socket_server_address === "*") {
+                socket_server_address = window.location.hostname;
+            }
+            if (!socket_server_port) socket_server_port = 8080;
+            let socket_server = this.makeSocketServerUrl(socket_server_address, socket_server_port);
+            let var_server_url = this.makeVarServerUrl("http", socket_server_address, socket_server_port);
+    
+            this.socketServerUrl = socket_server;
+            this.varServerUrl = var_server_url;
+            this.maxFileUploadSize = parseInt(max_upload_size);
+        } catch (error: any)
+        {
+            this.setError("Can't connect to server. " + getErrorMessage(error));
+            return false;
+        }
+
+        this.webSocket = new PiPedalSocket(
+            this.socketServerUrl,
+            {
+                onMessageReceived: this.onSocketMessage,
+                onError: this.onSocketError,
+                onConnectionLost: this.onSocketConnectionLost,
+                onReconnect: this.onSocketReconnected,
+                onReconnecting: this.onSocketReconnecting
+            }
+        );
+
+        try { 
+            await this.webSocket.connect();
+        } catch (error) {
+            this.setError("Failed to connect to server. (" + getErrorMessage(error));
+            return false;
+
+        }
+        try {
+            let isoFetch = await fetch(new Request('iso_codes.json'));
+            this.countryCodes = (await isoFetch.json()) as { [Name: string]: string };
 
 
-                this.socketServerUrl = socket_server;
-                this.varServerUrl = var_server_url;
-                this.maxFileUploadSize = parseInt(max_upload_size);
 
-                this.webSocket = new PiPedalSocket(
-                    this.socketServerUrl,
-                    {
-                        onMessageReceived: this.onSocketMessage,
-                        onError: this.onSocketError,
-                        onConnectionLost: this.onSocketConnectionLost,
-                        onReconnect: this.onSocketReconnected,
-                        onReconnecting: this.onSocketReconnecting
-                    }
-                );
-                return this.webSocket.connect();
-            })
-            .catch((error) => {
-                this.setError("Failed to connect to server. (" + this.socketServerUrl + ")");
-                return false;
-            })
-            .then(() => {
-                return this.getUpdateStatus();
-            })
-            .then((updateStatus) => {
-                const isoRequest = new Request('iso_codes.json');
-                return fetch(isoRequest);
-            })
-            .then((response) => {
-                return response.json();
-            })
-            .then((countryCodes) => {
-                this.countryCodes = countryCodes as { [Name: string]: string };
+            this.clientId = (await this.getWebSocket().request<number>("hello")) as number;
 
-                return this.getWebSocket().request<number>("hello");
-            })
-            .then((clientId) => {
-                this.clientId = clientId;
+            this.preloadImages( (await this.getWebSocket().request<string>("imageList")));
+        } catch (error) {
+            this.setError("Failed to establish connection. " + getErrorMessage(error));
+            return false;
+        }
+        return await this.loadServerState();
+    }
+    async loadServerState() : Promise<boolean>
+    {
+        try 
+        { 
+            this.serverVersion = await this.getWebSocket().request<PiPedalVersion>("version");
 
-                return this.getWebSocket().request<string>("imageList");
-            })
-            .then((data) => {
-                this.preloadImages(data);
-                return true;
-            })
-            .catch((error) => {
-                this.setError("Failed to connect to server. " + error.toString());
-                return false;
-            })
-            .then((succeeded) => {
-                if (!succeeded) return false;
-                return this.getWebSocket().request<PiPedalVersion>("version").then(data => {
-                    this.serverVersion = data;
-                    return this.getWebSocket().request<any>("plugins");
-                })
-                    .then(data => {
-                        this.ui_plugins.set(UiPlugin.deserialize_array(data));
+            this.updateStatus.set(new UpdateStatus().deserialize(await this.getUpdateStatus()));
 
-                        return this.getWebSocket().request<Pedalboard>("currentPedalboard");
-                    })
-                    .then(data => {
-                        this.setModelPedalboard(new Pedalboard().deserialize(data));
+            this.hasWifiDevice.set(await this.getWebSocket().request<boolean>("getHasWifi"));
+                        
+            this.ui_plugins.set(
+                UiPlugin.deserialize_array(await this.getWebSocket().request<any>("plugins"))
+            );
+            this.setModelPedalboard(
+                new Pedalboard().deserialize(
+                    await this.getWebSocket().request<Pedalboard>("currentPedalboard")
+                )
+            );
+            this.plugin_classes.set(new PluginClass().deserialize(
+                await this.getWebSocket().request<any>("pluginClasses")
+            ));
+            this.validatePluginClasses(this.plugin_classes.get());
 
-                        return this.getWebSocket().request<any>("pluginClasses");
-                    })
-                    .then((data) => {
+            this.presets.set(
+                new PresetIndex().deserialize(
+                    await this.getWebSocket().request<PresetIndex>("getPresets")
+                )
+            );
+            this.wifiConfigSettings.set(
+                new WifiConfigSettings().deserialize(
+                    await this.getWebSocket().request<any>("getWifiConfigSettings")
+                ));
+            this.wifiDirectConfigSettings.set(
+                new WifiDirectConfigSettings().deserialize(
+                    await this.getWebSocket().request<any>("getWifiDirectConfigSettings")
+                ));                    
+            this.governorSettings.set(new GovernorSettings().deserialize(
+                await this.getWebSocket().request<any>("getGovernorSettings")
+            ));
+            this.showStatusMonitor.set(
+                await this.getWebSocket().request<boolean>("getShowStatusMonitor")
+            );
+            this.jackServerSettings.set(
+                new JackServerSettings().deserialize(
+                    await this.getWebSocket().request<any>("getJackServerSettings")
+                )
+            );
+            this.jackConfiguration.set(new JackConfiguration().deserialize(
+                await this.getWebSocket().request<JackConfiguration>("getJackConfiguration")
+            ));
+            this.jackSettings.set(new JackChannelSelection().deserialize(
+                await this.getWebSocket().request<any>("getJackSettings")
+            ));
+            this.banks.set(new BankIndex().deserialize(await this.getWebSocket().request<any>("getBankIndex")));                
 
-                        this.plugin_classes.set(new PluginClass().deserialize(data));
-                        this.validatePluginClasses(this.plugin_classes.get());
+            this.favorites.set(await this.getWebSocket().request<FavoritesList>("getFavorites"));
 
-                        return this.getWebSocket().request<PresetIndex>("getPresets");
-                    })
-                    .then((data) => {
-                        this.presets.set(new PresetIndex().deserialize(data));
+            this.systemMidiBindings.set(MidiBinding.deserialize_array(await this.getWebSocket().request<MidiBinding[]>("getSystemMidiBindings")));
 
-                        return this.getWebSocket().request<any>("getWifiConfigSettings");
-                    })
-                    .then(data => {
-                        this.wifiConfigSettings.set(new WifiConfigSettings().deserialize(data));
+            // load at lest once before we allow a reconnect.
+            this.getWebSocket().canReconnect = true;
 
-                        return this.getWebSocket().request<any>("getWifiDirectConfigSettings");
-                    })
-                    .then(data => {
-                        this.wifiDirectConfigSettings.set(new WifiDirectConfigSettings().deserialize(data));
-
-                        return this.getWebSocket().request<any>("getGovernorSettings");
-                    })
-                    .then(data => {
-                        this.governorSettings.set(new GovernorSettings().deserialize(data));
-
-                        return this.getWebSocket().request<boolean>("getShowStatusMonitor");
-                    })
-                    .then(data => {
-                        this.showStatusMonitor.set(data);
-
-                        return this.getWebSocket().request<any>("getJackServerSettings");
-                    })
-                    .then(data => {
-                        this.jackServerSettings.set(new JackServerSettings().deserialize(data));
-
-                        return this.getWebSocket().request<JackConfiguration>("getJackConfiguration");
-                    })
-                    .then((data) => {
-                        // data.isValid = false;
-                        // data.errorState = "Jack Audio server not running."
-
-                        this.jackConfiguration.set(new JackConfiguration().deserialize(data));
-
-                        return this.getWebSocket().request<any>("getJackSettings");
-                    })
-                    .then((data) => {
-                        this.jackSettings.set(new JackChannelSelection().deserialize(data));
-
-                        return this.getWebSocket().request<any>("getBankIndex");
-                    })
-                    .then((data) => {
-                        this.banks.set(new BankIndex().deserialize(data));
-                        if (this.webSocket) {
-                            // MUST not allow reconnect until at least one complete load has finished.
-                            this.webSocket.canReconnect = true;
-                        }
-
-                        return this.getWebSocket().request<FavoritesList>("getFavorites");
-                    })
-                    .then((data) => {
-                        this.favorites.set(data);
-
-                        return this.getWebSocket().request<MidiBinding[]>("getSystemMidiBindings");
-                    })
-                    .then((data) => {
-                        let bindings = MidiBinding.deserialize_array(data);
-                        this.systemMidiBindings.set(bindings);
-
-                        if (this.webSocket) {
-                            // MUST not allow reconnect until at least one complete load has finished.
-                            this.webSocket.canReconnect = true;
-                        }
-                        this.setState(State.Ready);
-                        return true;
-                    })
-                    .catch((error) => {
-                        this.setError("Failed to fetch server state.\n\n" + error.toString());
-                        return false;
-                    });
-
-            })
-            ;
+            this.setState(State.Ready);
+            return true;
+        }
+         catch(error) {
+            this.setError("Failed to fetch server state.\n\n" + getErrorMessage(error));
+            return false;
+        }
     }
 
 

react/src/SettingsDialog.tsx

@@ -212,9 +212,13 @@ const SettingsDialog = withStyles(styles, { withTheme: true })(
             this.handleGovernorSettingsChanged = this.handleGovernorSettingsChanged.bind(this);
             this.handleConnectionStateChanged = this.handleConnectionStateChanged.bind(this);
             this.handleShowStatusMonitorChanged = this.handleShowStatusMonitorChanged.bind(this);
+            this.handleHasWifiChanged = this.handleHasWifiChanged.bind(this);
 
         }
 
+        handleHasWifiChanged(newValue: boolean) {
+            this.setState({hasWifiDevice: newValue});
+        }
 
         handleShowStatusMonitorChanged(): void {
             this.setState({ showStatusMonitor: this.model.showStatusMonitor.get() });
@@ -322,6 +326,7 @@ const SettingsDialog = withStyles(styles, { withTheme: true })(
             if (active !== this.active) {
                 this.active = active;
                 if (active) {
+                    this.model.hasWifiDevice.addOnChangedHandler(this.handleHasWifiChanged);
                     this.model.state.addOnChangedHandler(this.handleConnectionStateChanged);
                     this.model.showStatusMonitor.addOnChangedHandler(this.handleShowStatusMonitorChanged);
                     this.model.jackSettings.addOnChangedHandler(this.handleJackSettingsChanged);
@@ -350,6 +355,8 @@ const SettingsDialog = withStyles(styles, { withTheme: true })(
                     this.handleJackServerSettingsChanged();
                     this.handleWifiConfigSettingsChanged();
                     this.handleWifiDirectConfigSettingsChanged();
+                    this.setState({hasWifiDevice: this.model.hasWifiDevice.get()});
+
                     this.timerHandle = setInterval(() => this.tick(), 1000);
                 } else {
                     if (this.timerHandle) {
@@ -364,7 +371,7 @@ const SettingsDialog = withStyles(styles, { withTheme: true })(
                     this.model.wifiConfigSettings.removeOnChangedHandler(this.handleWifiConfigSettingsChanged);
                     this.model.wifiDirectConfigSettings.removeOnChangedHandler(this.handleWifiDirectConfigSettingsChanged);
                     this.model.governorSettings.removeOnChangedHandler(this.handleGovernorSettingsChanged);
-
+                    this.model.hasWifiDevice.removeOnChangedHandler(this.handleHasWifiChanged);
                 }
             }
 

src/HotspotManager.cpp

@@ -60,6 +60,7 @@ namespace pipedal::impl
         virtual bool CancelPost(PostHandle handle) override;
 
         virtual void SetNetworkChangingListener(NetworkChangingListener &&listener) override;
+        virtual void SetHasWifiListener(HasWifiListener &&listener) override;
 
     private:
         enum class State
@@ -75,6 +76,11 @@ namespace pipedal::impl
         void SetState(State state);
         State state = State::Initial;
 
+        bool hasWifi = false;
+        HasWifiListener hasWifiListener;
+        void SetHasWifi(bool hasWifi);
+        virtual bool GetHasWifi() override ;
+
         void onClose();
         void onError(const std::string &message);
         void onInitialize();
@@ -224,6 +230,7 @@ void HotspotManagerImpl::onInitialize()
 }
 void HotspotManagerImpl::onDisconnect()
 {
+    SetHasWifi(false);
     if (state != State::Initial && state != State::WaitingForNetworkManager)
     {
         WaitForNetworkManager();
@@ -242,6 +249,8 @@ void HotspotManagerImpl::UpdateNetworkManagerStatus()
         auto ethernetDevice = GetDevice(NM_DEVICE_TYPE_ETHERNET);
         auto wlanDevice = GetDevice(NM_DEVICE_TYPE_WIFI);
 
+        SetHasWifi(!!wlanDevice);
+
         if (ethernetDevice && wlanDevice)
         {
             if (state == State::Initial || state == State::WaitingForNetworkManager)
@@ -291,6 +300,7 @@ void HotspotManagerImpl::ReleaseNetworkManager()
 
     this->onDeviceRemovedHandle = INVALID_DBUS_EVENT_HANDLE;
     this->onDeviceAddedHandle = INVALID_DBUS_EVENT_HANDLE;
+    SetHasWifi(false);
 }
 
 void HotspotManagerImpl::onDevicesChanged()
@@ -401,6 +411,8 @@ void HotspotManagerImpl::onStartMonitoring()
         OnEthernetStateChanged(ethernetDevice->State());
         OnWlanStateChanged(wlanDevice->State());
 
+        SetHasWifi(true);
+
         StartScanTimer();
         onAccessPointChanged();
     }
@@ -863,11 +875,11 @@ void HotspotManagerImpl::StartHotspot()
             settings["ipv4"]["method"] = "shared";
             settings["ipv6"]["method"] = "shared";
             settings["ipv6"]["addr-gen-mode"] = 1; // "stable-privacy";
-            
-                ////////////////////////////////////////////////////////////////
 
-                // Create connection
-                settings["ipv4"]["method"] = sdbus::Variant(std::string("shared"));
+            ////////////////////////////////////////////////////////////////
+
+            // Create connection
+            settings["ipv4"]["method"] = sdbus::Variant(std::string("shared"));
             // settings["ipv6"]["method"] = sdbus::Variant(std::string("ignore"));
 
             settings["ipv4"]["address-data"] = sdbus::Variant(std::vector<std::map<std::string, sdbus::Variant>>{{{"address", sdbus::Variant("192.168.60.1")},
@@ -1014,6 +1026,32 @@ bool HotspotManagerImpl::CancelPost(PostHandle handle)
     return dbusDispatcher.CancelPost(handle);
 }
 
+void HotspotManagerImpl::SetHasWifiListener(HasWifiListener &&listener)
+{
+    std::lock_guard<std::recursive_mutex> lock{this->networkChangingListenerMutex};
+    this->hasWifiListener = listener;
+    if (!this->closed && this->hasWifiListener)
+    {
+        this->hasWifiListener(this->hasWifi);
+    }
+}
+bool HotspotManagerImpl::GetHasWifi() {
+    std::lock_guard<std::recursive_mutex> lock{this->networkChangingListenerMutex};
+    return hasWifi;
+}
+void HotspotManagerImpl::SetHasWifi(bool hasWifi)
+{
+    std::lock_guard<std::recursive_mutex> lock{this->networkChangingListenerMutex};
+    if (hasWifi != this->hasWifi)
+    {
+        this->hasWifi = hasWifi;
+        if (this->hasWifiListener)
+        {
+            this->hasWifiListener(this->hasWifi);
+        }
+    }
+}
+
 void HotspotManagerImpl::SetNetworkChangingListener(NetworkChangingListener &&listener)
 {
     std::lock_guard<std::recursive_mutex> lock{this->networkChangingListenerMutex};
@@ -1034,23 +1072,29 @@ std::vector<std::string> HotspotManagerImpl::GetKnownWifiNetworks()
     return this->knownWifiNetworks;
 }
 
-
-static bool is_wireless_sysfs(const std::string& ifname) {
+static bool is_wireless_sysfs(const std::string &ifname)
+{
     return fs::exists("/sys/class/net/" + ifname + "/wireless");
 }
 
-static std::vector<std::string> get_wireless_interfaces_sysfs() {
+static std::vector<std::string> get_wireless_interfaces_sysfs()
+{
     std::vector<std::string> wireless_interfaces;
     const std::string net_path = "/sys/class/net";
 
-    try {
-        for (const auto& entry : fs::directory_iterator(net_path)) {
+    try
+    {
+        for (const auto &entry : fs::directory_iterator(net_path))
+        {
             std::string ifname = entry.path().filename();
-            if (is_wireless_sysfs(ifname)) {
+            if (is_wireless_sysfs(ifname))
+            {
                 wireless_interfaces.push_back(ifname);
             }
         }
-    } catch (const fs::filesystem_error& e) {
+    }
+    catch (const fs::filesystem_error &e)
+    {
         std::cerr << "Error accessing " << net_path << ": " << e.what() << std::endl;
     }
 

src/HotspotManager.hpp

@@ -55,6 +55,11 @@ namespace pipedal {
 
         virtual void SetNetworkChangingListener(NetworkChangingListener &&listener) = 0;
 
+        using HasWifiListener = std::function<void(bool hasWifi)>;
+        virtual void SetHasWifiListener(HasWifiListener &&listener) = 0;
+        virtual bool GetHasWifi() = 0;
+
+
         using PostHandle = uint64_t;
         using PostCallback = std::function<void()>;
 

src/PiPedalModel.cpp

@@ -99,29 +99,33 @@ PiPedalModel::PiPedalModel()
         {
             OnNetworkChanging(ethernetConnected, hotspotEnabling);
         });
+    hotspotManager->SetHasWifiListener(
+        [this](bool hasWifi)
+        {
+            this->SetHasWifi(hasWifi);
+        });
     // don't actuall start the hotspotManager until after LV2 is initialized (in order to avoid logging oddities)
 }
 
-void PrepareSnapshostsForSave(Pedalboard&pedalboard) 
+void PrepareSnapshostsForSave(Pedalboard &pedalboard)
 {
-    if (pedalboard.selectedSnapshot() != -1) {
-        auto&currentSnapshot = pedalboard.snapshots()[pedalboard.selectedSnapshot()];
-        if (!currentSnapshot ||  currentSnapshot->isModified_)
+    if (pedalboard.selectedSnapshot() != -1)
+    {
+        auto &currentSnapshot = pedalboard.snapshots()[pedalboard.selectedSnapshot()];
+        if (!currentSnapshot || currentSnapshot->isModified_)
         {
             pedalboard.selectedSnapshot(-1);
-
         }
     }
-    for (auto &snapshot: pedalboard.snapshots())
+    for (auto &snapshot : pedalboard.snapshots())
     {
-        if (snapshot) {
+        if (snapshot)
+        {
             snapshot->isModified_ = false;
         }
     }
 }
 
-
-
 void PiPedalModel::Close()
 {
     std::unique_ptr<AudioHost> oldAudioHost;
@@ -139,8 +143,8 @@ void PiPedalModel::Close()
         }
 
         // take a snapshot incase a client unsusbscribes in the notification handler (in which case the mutex won't protect us)
-        std::vector<IPiPedalModelSubscriber::ptr> t {subscribers.begin(),subscribers.end()};
-        for (auto&subscriber: t)
+        std::vector<IPiPedalModelSubscriber::ptr> t{subscribers.begin(), subscribers.end()};
+        for (auto &subscriber : t)
         {
             subscriber->Close();
         }
@@ -351,7 +355,8 @@ void PiPedalModel::RemoveNotificationSubsription(std::shared_ptr<IPiPedalModelSu
 void PiPedalModel::PreviewControl(int64_t clientId, int64_t pedalItemId, const std::string &symbol, float value)
 {
     IEffect *effect = lv2Pedalboard->GetEffect(pedalItemId);
-    if (!effect) {
+    if (!effect)
+    {
         return;
     }
     if (effect->IsVst3())
@@ -384,7 +389,8 @@ void PiPedalModel::OnNotifyMaybeLv2StateChanged(uint64_t instanceId)
     PedalboardItem *item = pedalboard.GetItem(instanceId);
     if (item != nullptr)
     {
-        if (!audioHost) {
+        if (!audioHost)
+        {
             return;
         }
         bool changed = this->audioHost->UpdatePluginState(*item);
@@ -395,7 +401,7 @@ void PiPedalModel::OnNotifyMaybeLv2StateChanged(uint64_t instanceId)
 
             Lv2PluginState newState = item->lv2State();
 
-            FireLv2StateChanged(instanceId,newState);
+            FireLv2StateChanged(instanceId, newState);
         }
     }
 }
@@ -481,7 +487,6 @@ void PiPedalModel::FireJackConfigurationChanged(const JackConfiguration &jackCon
 {
     // noify subscribers.
 
-    
     std::vector<IPiPedalModelSubscriber::ptr> t{subscribers.begin(), subscribers.end()};
     for (auto &subscriber : t)
     {
@@ -531,15 +536,13 @@ void PiPedalModel::SetPedalboard(int64_t clientId, Pedalboard &pedalboard)
     }
 }
 
-
-
 void PiPedalModel::SetSnapshot(int64_t selectedSnapshot)
 {
     std::lock_guard<std::recursive_mutex> lock(mutex);
     if (this->pedalboard.ApplySnapshot(selectedSnapshot, pluginHost))
     {
         this->pedalboard.selectedSnapshot(selectedSnapshot);
-        for (auto snapshot: this->pedalboard.snapshots())
+        for (auto snapshot : this->pedalboard.snapshots())
         {
             if (snapshot)
             {
@@ -554,7 +557,6 @@ void PiPedalModel::SetSnapshots(std::vector<std::shared_ptr<Snapshot>> &snapshot
 {
     std::lock_guard<std::recursive_mutex> lock(mutex);
 
-
     UpdateVst3Settings(pedalboard);
 
     this->pedalboard.snapshots(std::move(snapshots));
@@ -562,7 +564,7 @@ void PiPedalModel::SetSnapshots(std::vector<std::shared_ptr<Snapshot>> &snapshot
     if (selectedSnapshot != -1)
     {
         this->pedalboard.selectedSnapshot(selectedSnapshot);
-        for (auto &snapshot: pedalboard.snapshots())
+        for (auto &snapshot : pedalboard.snapshots())
         {
             if (snapshot)
             {
@@ -570,12 +572,11 @@ void PiPedalModel::SetSnapshots(std::vector<std::shared_ptr<Snapshot>> &snapshot
             }
         }
     }
-    
+
     this->FirePedalboardChanged(-1, false); // notify clients (but don't change the running pedalboard, because it's still the same)
                                             // this means that all clients get an up-to-date copy of the snapshots AND the currently selected snapshot if that applies
                                             // (and a fresh copy of the pedalboard settings as well, which is harmless, since they have not changed)
-    this->SetPresetChanged(-1, true,false);
-
+    this->SetPresetChanged(-1, true, false);
 }
 
 void PiPedalModel::UpdateCurrentPedalboard(int64_t clientId, Pedalboard &pedalboard)
@@ -638,12 +639,13 @@ void PiPedalModel::SetPresetChanged(int64_t clientId, bool value, bool changeSna
 {
     if (changeSnapshotSelect && value && this->pedalboard.selectedSnapshot() != -1)
     {
-        auto & snapshot = this->pedalboard.snapshots()[pedalboard.selectedSnapshot()];
-        if (snapshot) {
+        auto &snapshot = this->pedalboard.snapshots()[pedalboard.selectedSnapshot()];
+        if (snapshot)
+        {
             if (!snapshot->isModified_)
             {
-                snapshot->isModified_  = true;
-                FireSnapshotModified(pedalboard.selectedSnapshot(),true);
+                snapshot->isModified_ = true;
+                FireSnapshotModified(pedalboard.selectedSnapshot(), true);
             }
         }
 
@@ -664,10 +666,9 @@ void PiPedalModel::FireSnapshotModified(int64_t snapshotIndex, bool modified)
         std::vector<IPiPedalModelSubscriber::ptr> t{subscribers.begin(), subscribers.end()};
         for (auto &subscriber : t)
         {
-            subscriber->OnSnapshotModified(snapshotIndex,modified);
+            subscriber->OnSnapshotModified(snapshotIndex, modified);
         }
     }
-
 }
 
 void PiPedalModel::FireSelectedSnapshotChanged(int64_t selectedSnapshot)
@@ -752,15 +753,15 @@ void PiPedalModel::UpdateVst3Settings(Pedalboard &pedalboard)
 #endif
 }
 
-void PiPedalModel::FireLv2StateChanged(int64_t instanceId, const Lv2PluginState &lv2State) {
+void PiPedalModel::FireLv2StateChanged(int64_t instanceId, const Lv2PluginState &lv2State)
+{
     std::lock_guard<std::recursive_mutex> guard{mutex};
     std::vector<IPiPedalModelSubscriber::ptr> t{subscribers.begin(), subscribers.end()};
 
     for (auto &subscriber : t)
     {
-        subscriber->OnLv2StateChanged(instanceId,lv2State);
+        subscriber->OnLv2StateChanged(instanceId, lv2State);
     }
-
 }
 
 // referesh the plugin state for all plugins.
@@ -774,13 +775,12 @@ bool PiPedalModel::SyncLv2State()
         {
             if (audioHost->UpdatePluginState(*item))
             {
-                FireLv2StateChanged(item->instanceId(),item->lv2State());
+                FireLv2StateChanged(item->instanceId(), item->lv2State());
                 changed = true;
             }
         }
     }
     return changed;
-
 }
 void PiPedalModel::SaveCurrentPreset(int64_t clientId)
 {
@@ -790,7 +790,6 @@ void PiPedalModel::SaveCurrentPreset(int64_t clientId)
     SyncLv2State();
     PrepareSnapshostsForSave(pedalboard);
 
-
     storage.SaveCurrentPreset(this->pedalboard);
     this->SetPresetChanged(clientId, false);
 }
@@ -819,15 +818,14 @@ int64_t PiPedalModel::SavePluginPresetAs(int64_t instanceId, const std::string &
     return presetId;
 }
 
-
 int64_t PiPedalModel::SaveCurrentPresetAs(int64_t clientId, const std::string &name, int64_t saveAfterInstanceId)
 {
     std::lock_guard<std::recursive_mutex> guard{mutex};
 
     SyncLv2State();
     auto pedalboard = this->pedalboard.DeepCopy();
-    PrepareSnapshostsForSave(pedalboard);    
-    
+    PrepareSnapshostsForSave(pedalboard);
+
     UpdateVst3Settings(pedalboard);
     pedalboard.name(name);
     int64_t result = storage.SaveCurrentPresetAs(pedalboard, name, saveAfterInstanceId);
@@ -873,8 +871,8 @@ void PiPedalModel::NextBank(Direction direction)
     }
     size_t index = 0;
     for (size_t i = 0; i < bankIndex.entries().size(); ++i)
-    {   
-        auto&entry = bankIndex.entries()[i];
+    {
+        auto &entry = bankIndex.entries()[i];
         if (entry.instanceId() == bankIndex.selectedBank())
         {
             index = i;
@@ -888,15 +886,19 @@ void PiPedalModel::NextBank(Direction direction)
         {
             index = 0;
         }
-    } else {
+    }
+    else
+    {
         if (index == 0)
         {
-            index = bankIndex.entries().size()-1;
-        } else {
+            index = bankIndex.entries().size() - 1;
+        }
+        else
+        {
             --index;
         }
     }
-    this->OpenBank(-1,bankIndex.entries()[index].instanceId());
+    this->OpenBank(-1, bankIndex.entries()[index].instanceId());
 }
 void PiPedalModel::NextPreset(Direction direction)
 {
@@ -966,11 +968,13 @@ void PiPedalModel::OnNotifyNextMidiProgram(const RealtimeNextMidiProgramRequest
     }
 }
 
-void PiPedalModel::OnNotifyMidiRealtimeSnapshotRequest(int32_t snapshotIndex,int64_t snapshotRequestId) 
+void PiPedalModel::OnNotifyMidiRealtimeSnapshotRequest(int32_t snapshotIndex, int64_t snapshotRequestId)
 {
-    try {
+    try
+    {
         SetSnapshot((int64_t)snapshotIndex);
-    } catch (const std::exception&e)
+    }
+    catch (const std::exception &e)
     {
         Lv2Log::error(SS("SetSnapshot failed. " << e.what()));
     }
@@ -1006,7 +1010,6 @@ void PiPedalModel::OnNotifyNextMidiBank(const RealtimeNextMidiProgramRequest &re
     }
 }
 
-
 void PiPedalModel::OnNotifyMidiProgramChange(RealtimeMidiProgramRequest &midiProgramRequest)
 {
     std::lock_guard<std::recursive_mutex> guard{mutex};
@@ -2054,7 +2057,9 @@ void PiPedalModel::OnPatchSetReply(uint64_t instanceId, LV2_URID patchSetPropert
         if (properties.contains(propertyUri) && properties[propertyUri] == atomObject)
         {
             // do noting.
-        } else {
+        }
+        else
+        {
             properties[propertyUri] = std::move(atomObject);
         }
 
@@ -2234,7 +2239,6 @@ std::vector<AlsaDeviceInfo> PiPedalModel::GetAlsaDevices()
     result.push_back(MakeDummyDeviceInfo(8));
 #endif
     return result;
-
 }
 
 const std::filesystem::path &PiPedalModel::GetWebRoot() const
@@ -2617,7 +2621,6 @@ void PiPedalModel::OnNetworkChanged(bool ethernetConnected, bool hotspotConnecte
     FireNetworkChanged();
 }
 
-
 void PiPedalModel::OnNotifyMidiRealtimeEvent(RealtimeMidiEventType eventType)
 {
     try
@@ -2698,3 +2701,24 @@ void PiPedalModel::RequestShutdown(bool restart)
         }
     }
 }
+
+void PiPedalModel::SetHasWifi(bool hasWifi)
+{
+    std::lock_guard<std::recursive_mutex> lock(mutex);
+    if (this->hasWifi != hasWifi)
+    {
+        this->hasWifi = hasWifi;
+
+        std::vector<IPiPedalModelSubscriber::ptr> t{subscribers.begin(), subscribers.end()};
+
+        for (auto &subscriber : t)
+        {
+            subscriber->OnHasWifiChanged(hasWifi);
+        }
+    }
+}
+bool PiPedalModel::GetHasWifi()
+{
+    std::lock_guard<std::recursive_mutex> lock(mutex);
+    return hasWifi;
+}

src/PiPedalModel.hpp

@@ -92,6 +92,7 @@ namespace pipedal
         virtual void OnErrorMessage(const std::string &message) = 0;
         virtual void OnLv2PluginsChanging() = 0;
         virtual void OnNetworkChanging(bool hotspotConnected) = 0;
+        virtual void OnHasWifiChanged(bool hasWifi) = 0;
         virtual void Close() = 0;
     };
 
@@ -107,6 +108,9 @@ namespace pipedal
         using NetworkChangedListener = std::function<void(void)>;
 
     private:
+        bool hasWifi = false;
+
+        void SetHasWifi(bool hasWifi);
         std::unique_ptr<HotspotManager> hotspotManager;
 
         std::unique_ptr<Updater> updater;
@@ -257,6 +261,9 @@ namespace pipedal
             Increase,
             Decrease
         };
+
+    bool GetHasWifi();
+
         void NextBank(Direction direction = Direction::Increase);
         void PreviousBank() { NextBank(Direction::Decrease); }
         void NextPreset(Direction direction = Direction::Increase);

src/PiPedalSocket.cpp

@@ -1080,6 +1080,11 @@ public:
             UpdateStatus updateStatus = model.GetUpdateStatus();
             this->Reply(replyTo, "getUpdateStatus", updateStatus);
         }
+        else if (message == "getHasWifi")
+        {
+            bool result = model.GetHasWifi();
+            this->Reply(replyTo, "getHasWifi",result);
+        }
         else if (message == "updateNow")
         {
             std::string updateUrl;
@@ -1727,6 +1732,12 @@ private:
         Send("onLv2PluginsChanging", true);
         Flush();
     }
+    virtual void OnHasWifiChanged(bool hasWifi){
+        Send("onHasWifiChanged", hasWifi);
+        Flush();
+
+    }
+
     virtual void OnNetworkChanging(bool hotspotConnected) override
     {
         try

todo.txt

@@ -1,3 +1,6 @@
+
+Hotspot monitoring - fails when WiFi network is disabled.
+
 Not all country codes are valid (e.g. Antarctica)