Redundancy for some downloads.

home/stormux/.local/bin/apple_2e.py

@@ -45,9 +45,16 @@ def internet_available():
     return False
 
 
-def apple_support_url():
+def apple_support_urls():
     gateway = os.environ.get("ipfsGateway", "https://ipfs.stormux.org")
-    return f"{gateway}/ipfs/{APPLE2E_CID}?filename={APPLE2E_ZIP_NAME}"
+    gateways = (gateway, "https://ipfs.io", "https://dweb.link")
+    urls = []
+    for currentGateway in gateways:
+        currentGateway = currentGateway.rstrip("/")
+        currentUrl = f"{currentGateway}/ipfs/{APPLE2E_CID}?filename={APPLE2E_ZIP_NAME}"
+        if currentUrl not in urls:
+            urls.append(currentUrl)
+    return urls
 
 
 def sha256_file(filePath):
@@ -147,7 +154,16 @@ def ensure_apple_support_files(
     zipPath = cacheDir / APPLE2E_ZIP_NAME
 
     speak("Apple 2e support files are not installed. Downloading them now.", True)
-    download_file(apple_support_url(), zipPath)
+    lastError = None
+    for sourceUrl in apple_support_urls():
+        try:
+            download_file(sourceUrl, zipPath)
+            break
+        except subprocess.CalledProcessError as error:
+            lastError = error
+            zipPath.unlink(missing_ok=True)
+    else:
+        raise RuntimeError("Apple 2e support archive could not be downloaded.") from lastError
 
     if sha256_file(zipPath) != APPLE2E_ZIP_SHA256:
         zipPath.unlink(missing_ok=True)