From a03a5ac76cc26f48cd9444f5d039e6674ca79db8 Mon Sep 17 00:00:00 2001
From: Riley Testut <riley@rileytestut.com>
Date: Tue, 15 Nov 2022 17:48:45 -0600
Subject: [PATCH] Improves error message when file does not exist at
 AppVersion.downloadURL

---
 AltStore/Operations/DownloadAppOperation.swift | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/AltStore/Operations/DownloadAppOperation.swift b/AltStore/Operations/DownloadAppOperation.swift
index 20623519..e308bd69 100644
--- a/AltStore/Operations/DownloadAppOperation.swift
+++ b/AltStore/Operations/DownloadAppOperation.swift
@@ -223,6 +223,11 @@ private extension DownloadAppOperation
             let downloadTask = self.session.downloadTask(with: sourceURL) { (fileURL, response, error) in
                 do
                 {
+                    if let response = response as? HTTPURLResponse
+                    {
+                        guard response.statusCode != 404 else { throw CocoaError(.fileNoSuchFile, userInfo: [NSURLErrorKey: sourceURL]) }
+                    }
+                    
                     let (fileURL, _) = try Result((fileURL, response), error).get()
                     finishOperation(.success(fileURL))