Fix redirects not being handled

Closes #1

BrowserCore/NavigationManager.swift

@@ -68,7 +68,7 @@ public class NavigationManager: NSObject, ObservableObject {
     @objc public func reload() {
         let url = currentURL
         currentURL = url
-        // todo: send navigation op
+        navigationOperation.send(.reload)
     }
     
     @objc public func goBack() {
@@ -105,6 +105,6 @@ public class NavigationManager: NSObject, ObservableObject {
 
 public extension NavigationManager {
     enum Operation {
-        case go, forward(count: Int), backward(count: Int)
+        case go, reload, forward(count: Int), backward(count: Int)
     }
 }

Gemini-iOS/BrowserNavigationController.swift

@@ -134,6 +134,10 @@ class BrowserNavigationController: UIViewController {
             backBrowserVCs.append(currentBrowserVC)
             newVC = BrowserWebViewController(navigator: navigator, url: navigator.currentURL)
             
+        case .reload:
+            currentBrowserVC.reload()
+            return
+            
         case let .backward(count: count):
             var removed = backBrowserVCs.suffix(count)
             backBrowserVCs.removeLast(count)

Gemini-iOS/BrowserWebViewController.swift

@@ -129,6 +129,11 @@ class BrowserWebViewController: UIViewController {
         loadDocument()
     }
     
+    func reload() {
+        loaded = false
+        loadDocument()
+    }
+    
     private func loadDocument() {
         guard !loaded else { return }
         
@@ -149,10 +154,11 @@ class BrowserWebViewController: UIViewController {
                 }
             case let .success(response):
                 if response.status.isRedirect {
+                    DispatchQueue.main.async {
+                        print("Trying to redirect to: '\(response.meta)'")
                         if let redirect = URL(string: response.meta) {
                             self.navigator.changeURL(redirect)
                         } else {
-                        DispatchQueue.main.async {
                             self.showError(message: "Invalid redirect URL: '\(response.meta)'")
                         }
                     }

GeminiProtocol/GeminiProtocol.swift

@@ -88,12 +88,14 @@ class GeminiProtocol: NWProtocolFramerImplementation {
         let header = GeminiResponseHeader(status: statusCode, meta: meta)
         
         let message = NWProtocolFramer.Message(geminiResponseHeader: header)
-        while true {
+        // What does the return value of deliverInputNoCopy mean, you ask? Why, I have no idea
-            if !framer.deliverInputNoCopy(length: .max, message: message, isComplete: true) {
+        // It always returns true for a length of zero, so following the sample code and looping
+        // infinitely until it returns false causes an infinite loop.
+        // Additionally, calling deliverInput with an empty Data() causes an error inside Network.framework.
+        // So, we just ignore the result since it doesn't seem to cause any problems ¯\_(ツ)_/¯
+        _ = framer.deliverInputNoCopy(length: statusCode.isSuccess ? .max : 0, message: message, isComplete: true)
         return 0
     }
-        }
-    }
     
     func handleOutput(framer: NWProtocolFramer.Instance, message: NWProtocolFramer.Message, messageLength: Int, isComplete: Bool) {
         guard let request = message.geminiRequest else { fatalError("GeminiProtocol can't send message that doesn't have an associated GeminiRequest") }