From eae34bb5c3b25be5660f6bf921eda139d90c4c6e Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@libreserver.org>
Date: Wed, 11 Oct 2023 20:35:17 +0100
Subject: [PATCH] Try to fill in missing prefix

---
 session.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/session.py b/session.py
index b03f0bd1b..fdf02f163 100644
--- a/session.py
+++ b/session.py
@@ -75,6 +75,9 @@ def url_exists(session, url: str, timeout_sec: int = 3,
     if domain:
         session_headers['User-Agent'] += \
             '; +' + http_prefix + '://' + domain + '/'
+    if '://' not in url:
+        if url.startswith('/'):
+            url = http_prefix + '://' + domain + url
     if not session:
         print('WARN: url_exists failed, no session specified')
         return True