I'm running a Python web server with uWSGI and nginx, with the base image of tiangolo/uwsgi-nginx-flask.
I want to pass on my client certificate DN if one exists. For that I defined the following nginx.conf:
uwsgi_read_timeout 300; ssl_certificate /app/cert.pem; ssl_certificate_key /app/key.pem; ssl_password_file /app/password.pass; ssl_client_certificate /app/client-ca.crt; ssl_verify_client optional; ssl_verify_depth 2; include uwsgi_params; uwsgi_param HTTP_X_DN $ssl_client_s_dn; I want my Flask code to receive the HTTP_X_DN parameter, but cannot find how.
From looking around, I found its expected to reside in request.environ object of flask, but I don't see any such key when printing the environ content.
For reference, request.environ.keys() returns the following when sending a request via Postman:
dict_keys(['QUERY_STRING', 'REQUEST_METHOD', 'CONTENT_TYPE', 'CONTENT_LENGTH', 'REQUEST_URI', 'PATH_INFO', 'DOCUMENT_ROOT', 'SERVER_PROTOCOL', 'REQUEST_SCHEME', 'HTTPS', 'REMOTE_ADDR', 'REMOTE_PORT', 'SERVER_PORT', 'SERVER_NAME', 'HTTP_CONTENT_TYPE', 'HTTP_CACHE_CONTROL', 'HTTP_POSTMAN_TOKEN', 'HTTP_USER_AGENT', 'HTTP_ACCEPT', 'HTTP_HOST', 'HTTP_ACCEPT_ENCODING', 'HTTP_CONTENT_LENGTH', 'HTTP_CONNECTION', 'wsgi.input', 'wsgi.file_wrapper', 'wsgi.version', 'wsgi.errors', 'wsgi.run_once', 'wsgi.multithread', 'wsgi.multiprocess', 'wsgi.url_scheme', 'uwsgi.version', 'uwsgi.node', 'werkzeug.request'])
