INNER CODE UNIT · Python

SubpathMiddleware

giuseppe99barchetta/SuggestArr · api_service/app.py:39

class SubpathMiddleware:
    """
    WSGI Middleware to strip the SUBPATH from the request URL
    so Flask routing works correctly behind various reverse proxies.
    """
    def __init__(self, app):
        self.app = app

    def __call__(self, environ, start_response):
        env_vars = load_env_vars()
        subpath = env_vars.get('SUBPATH')
        subpath = str(subpath).strip('/') if subpath else ''
        
        if subpath and environ['PATH_INFO'].startswith(f'/{subpath}'):
            # Strip the subpath from PATH_INFO.
            # If the URL is exactly /<subpath> (no trailing slash), the result
            # would be an empty string which is not a valid WSGI PATH_INFO.
            # Fall back to '/' so Flask can match the root route.

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