Hello! On Mon, Nov 30, 2020 at 03:26:59PM -0800, Frank Liu wrote:
> ok, for testing, I removed the variable from the map, and add one line in a > 2-way SSL server config, to create a fresh new variable: > > set $test_var "test"; > > For a request without client cert (400), I see neither "test", nor "-" in > the access log for $test_var. I only see blank, as if the $test_var was set > to "". That's because variables defined due to "set" somewhere in the configuration default to "" with an optional warning (http://nginx.org/r/uninitialized_variable_warn). And in your test the variable is uninitialized, as the set directive is not executed for the request in question. The "-" special value can be seen for various builtin variables, such as non-existing headers ($http_*, $sent_http_*, $upstream_http_*), non-existing arguments ($arg_*), cookies ($cookie_*), $content_length if not available, $remote_user if not provided or empty, and so on. -- Maxim Dounin http://mdounin.ru/ _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
