Socket logic force disconnect/reconnect when server doesn't properly close it

Amended to fix build

Soyuz/ViewModels/BonjourBrowser.swift

@@ -35,23 +35,27 @@ extension NWBrowser: NetworkDiscoveryEngine {
 // MARK: BonjourBrowser
 
 class BonjourBrowser: ObservableObject {
-    @Published var NDEngineResults: [NWBrowser.Result] = []
+    @Published var networkResults: [NWBrowser.Result] = []
     
-    private let nwBrowser: NetworkDiscoveryEngine
-    var connection: NWConnection!
+    private var nwBrowser: NWBrowser!
+    private var connection: NWConnection!
     
-    // TEMPORARY
-//    var bonjourListener: NWListener?
-
-    init(browser: NetworkDiscoveryEngine = NWBrowser(for: .bonjourWithTXTRecord(type: "_moonraker._tcp", domain: "local."), using: .tcp)) {
-        nwBrowser = browser
+    
+    init() {
+        if nwBrowser == nil {
+            setup()
+        }
+    }
+    
+    func setup() {
+        nwBrowser = NWBrowser(for: .bonjourWithTXTRecord(type: "_moonraker._tcp", domain: "local."), using: .tcp)
         // Bonjour browser results changed handler
         nwBrowser.setBrowseResultsChangedHandler({ (newResults, changes) in
             print("[update] Results changed.")
-            self.NDEngineResults.removeAll()
+            self.networkResults.removeAll()
             newResults.forEach { result in
                 print(result)
-                self.NDEngineResults.append(result)
+                self.networkResults.append(result)
             }
         })
         
@@ -72,4 +76,63 @@ class BonjourBrowser: ObservableObject {
         nwBrowser.startScan(queue: DispatchQueue.main)
     }
     
+    func enableScan(_ queue: DispatchQueue) {
+        if(nwBrowser.state == .cancelled) {
+            self.setup()
+        }
+        nwBrowser.start(queue: queue)
+    }
+    
+    func disableScan() {
+        if(nwBrowser.state != .cancelled) {
+            nwBrowser.cancel()
+        }
+    }
 }
+
+//class BonjourBrowser: ObservableObject {
+//    @Published var NDEngineResults: [NWBrowser.Result] = []
+//
+//    private let nwBrowser: NetworkDiscoveryEngine
+//    var connection: NWConnection!
+//
+//    // TEMPORARY
+////    var bonjourListener: NWListener?
+//
+//    init(browser: NetworkDiscoveryEngine = NWBrowser(for: .bonjourWithTXTRecord(type: "_moonraker._tcp", domain: "local."), using: .tcp)) {
+//        nwBrowser = browser
+//        // Bonjour browser results changed handler
+//        nwBrowser.setBrowseResultsChangedHandler({ (newResults, changes) in
+//            print("[update] Results changed.")
+//            self.NDEngineResults.removeAll()
+//            newResults.forEach { result in
+//                print(result)
+//                self.NDEngineResults.append(result)
+//            }
+//        })
+//
+//        // Bonjour browser state update handler
+//        nwBrowser.setStateUpdateHandler({ newState in
+//            switch newState {
+//            case .failed(let error):
+//                print("[error] nwbrowser: \(error)")
+//            case .ready:
+//                print("[ready] nwbrowser")
+//            case .setup:
+//                print("[setup] nwbrowser")
+//            default:
+//                break
+//            }
+//        })
+//
+//        nwBrowser.startScan(queue: DispatchQueue.main)
+//    }
+//
+//    func startScanning(queue: DispatchQueue.main) {
+//        if(self.nwBrowser.state == NWBrowser.State.cancelled) {
+//
+//        }
+//        self.nwBrowser.startScan(queue)
+//    }
+//
+//}

Soyuz/ViewModels/MoonrakerSocketManager.swift

@@ -74,7 +74,7 @@ class MoonrakerSocketManager: ObservableObject, WebSocketDelegate {
         //            socket?.disconnect()
         //        }
         //
-        if connection == nil {
+        if connection == nil || connection?.state == .cancelled {
             connection = NWConnection(to: endpoint, using: .tcp)
         }
         
@@ -112,25 +112,29 @@ class MoonrakerSocketManager: ObservableObject, WebSocketDelegate {
     
     func disconnect() {
         print("disconnect() called")
-        isConnected = false
-        //connection?.cancel()
-        connection = nil
+        self.isConnected = false
         socket?.disconnect()
+        socket = nil
     }
     
     
     // MARK: Private functions
     
     // Opens the websocket connection
-    private func openWebsocket() {
+    func openWebsocket() {
         // Exit function if there is no server to connect to
         if socketHost.isEmpty || socketPort.isEmpty {
             return
         }
         
+        if socket != nil {
+            socket!.connect()
+            return
+        }
+        
         lastPingDate = Date.now
         
-        var request = URLRequest(url: URL(string: "http://\(socketHost):\(socketPort)/websocket")!)
+        var request = URLRequest(url: URL(string: "ws://\(socketHost):\(socketPort)/websocket")!)
         request.timeoutInterval = 30
         socket = WebSocket(request: request, engine: starscreamEngine)
         socket!.delegate = self
@@ -154,7 +158,8 @@ class MoonrakerSocketManager: ObservableObject, WebSocketDelegate {
         switch(notification.name) {
         case NSWorkspace.screensDidSleepNotification:
             print("Screen slept. Disconnecting..")
-            socket?.disconnect()
+            self.disconnect()
+            //socket?.disconnect()
         case NSWorkspace.screensDidWakeNotification:
             print("Screen awoke. Opening websocket..")
             self.openWebsocket()
@@ -216,6 +221,15 @@ class MoonrakerSocketManager: ObservableObject, WebSocketDelegate {
         case .error(let error):
             isConnected = false
             print("[error] Starscream: \(error.debugDescription)")
+            switch(error) {
+            case .some(HTTPUpgradeError.notAnUpgrade(200)):
+                print("[debug] Starscream: Forcing disconnect and reconnect..")
+                self.socket?.forceDisconnect()
+                self.socket = nil
+                self.openWebsocket()
+            default:
+                break
+            }
         }
     }
     

Soyuz/Views/PrinterConfigView.swift

@@ -13,6 +13,8 @@ struct PrinterConfigView: View {
     @ObservedObject var printerManager: MoonrakerSocketManager
     @ObservedObject var bonjourBrowser = BonjourBrowser()
     
+    //@State var bonjourBrowser = NWBrowser(for: .bonjourWithTXTRecord(type: "_moonraker._tcp", domain: "local."),                                       using: .tcp)
+    
     @Environment(\.openURL) private var openURL
     
     
@@ -61,7 +63,7 @@ struct PrinterConfigView: View {
                         }.buttonStyle(PlainButtonStyle())
 
                     }
-                    ForEach(bonjourBrowser.NDEngineResults , id: \.hashValue) { result in
+                    ForEach(bonjourBrowser.networkResults, id: \.hashValue) { result in
                         HStack {
                             Text(result.endpoint.toFriendlyString())
                             Button {
@@ -79,6 +81,10 @@ struct PrinterConfigView: View {
         }
         .onAppear {
             NSApplication.shared.activate(ignoringOtherApps: true)
+            bonjourBrowser.enableScan(DispatchQueue.main)
+        }
+        .onDisappear {
+            bonjourBrowser.disableScan()
         }
     }
 }

Soyuz/Views/SoyuzMenuBarExtraView.swift

@@ -86,13 +86,6 @@ struct SoyuzMenuBarExtraView: View {
                 Text("Printers")
                     .foregroundColor(Color("ButtonForegroundColor"))
             }
-            /* Debugging Stuff */
-            Button {
-                notification.sendNotification(.printComplete)
-            } label: {
-                Text("Notify")
-            }
-            /* Debugging Stuff */
             Spacer()
             if(printerManager.isConnected) {
                 Image(systemName: "network")