Ensure base URL's trailing slash for path matching

1 files changed, 6 insertions, 1 deletions

diff --git a/src/scadere/listen.py b/src/scadere/listen.py
index aa322ee..dc898d8 100644
--- a/src/scadere/listen.py
+++ b/src/scadere/listen.py
@@ -193,6 +193,11 @@ async def listen(certs, base_url, host, port):  # pragma: no cover
         await server.serve_forever()
 
 
+def with_trailing_slash(base_url):
+    """Return the base URL with a trailing slash."""
+    return base_url if base_url.endswith('/') else f'{base_url}/'
+
+
 def main(arguments=argv[1:]):
     """Launch server."""
     description = ('Serve the TLS certificate expiration feed'
@@ -205,7 +210,7 @@ def main(arguments=argv[1:]):
     parser.add_argument('-v', '--version', action='version',
                         version=f'%(prog)s {__version__}')
     parser.add_argument('certs', metavar='INPUT', type=Path)
-    parser.add_argument('base_url', metavar='URL')
+    parser.add_argument('base_url', metavar='URL', type=with_trailing_slash)
     parser.add_argument('netloc', metavar='[HOST][:PORT]', nargs='?',
                         type=NetLoc(None), default=('localhost', None))
     args = parser.parse_args(arguments)