Merge pull request #1439 from haddocking/fix-download-links

update CNS download links

Author: rvhonorato

setup.py

@@ -6,6 +6,8 @@
 import subprocess
 import sys
 import tarfile
+from urllib.error import HTTPError, URLError
+import time
 import urllib.request
 from pathlib import Path
 from typing import cast
@@ -16,10 +18,10 @@
 from setuptools.command.install import install
 
 CNS_BINARIES = {
-    "x86_64-linux": "https://surfdrive.surf.nl/files/index.php/s/BWa5OimzbNliTi6/download",
-    "x86_64-darwin": "https://surfdrive.surf.nl/files/index.php/s/3Fzzte0Zx0L8GTY/download",
-    "arm64-darwin": "https://surfdrive.surf.nl/files/index.php/s/bYB3xPWf7iwo07X/download",
-    "aarch64-linux": "https://surfdrive.surf.nl/files/index.php/s/3rHpxcufHGrntHn/download",
+    "x86_64-linux": "https://surfdrive.surf.nl/public.php/dav/files/BWa5OimzbNliTi6",
+    "x86_64-darwin": "https://surfdrive.surf.nl/public.php/dav/files/3Fzzte0Zx0L8GTY",
+    "arm64-darwin": "https://surfdrive.surf.nl/public.php/dav/files/bYB3xPWf7iwo07X",
+    "aarch64-linux": "https://surfdrive.surf.nl/public.php/dav/files/3rHpxcufHGrntHn",
 }
 
 HADDOCK_RESTRAINTS_VERSION = "0.10.0"
@@ -163,13 +165,26 @@ def download_binaries(self):
             os.chmod(executable, 0o755)
 
     @staticmethod
-    def download_file(url, dest) -> tuple[bool, str]:
+    def download_file(url, dest, max_retries=3, delay=2) -> tuple[bool, str]:
         """Download a file from a URL"""
-        try:
-            urllib.request.urlretrieve(url, dest)
-            return True, "Download successful"
-        except Exception as e:  # pylint: disable=broad-except
-            return False, f"Download failed: {e}"
+        for attempt in range(max_retries):
+            try:
+                urllib.request.urlretrieve(url, dest)
+                return True, "Download successful"
+            except (URLError, HTTPError) as e:  # pylint: disable=broad-except
+                if attempt < max_retries - 1:
+                    time.sleep(delay)
+                    continue
+                return (
+                    False,
+                    f"Download of {dest} failed after {max_retries} attempts: {e} URL: {url}",
+                )
+            except Exception as e:  # pylint: disable=broad-except
+                return False, f"Download of {dest} failed: {e} URL: {url}"
+        return (
+            False,
+            f"Download of {dest} failed after {max_retries} attempts URL: {url}",
+        )
 
     @staticmethod
     def get_arch():