Okay, I think I get this now. Why can’t nginx directly call my Flask application? Because nginx doesn’t support the WSGI spec. Technically nginx could implement the WSGI spec if they wanted, they just haven’t. That being the case, we need a web server that does implement the spec, which is what the uWSGI server … Read more
I aslo ran into same issue while following some tutorial. The problem was that I set the option socket = 0.0.0.0:8000 instead of http = 0.0.0.0:8000. socket option intended to be used with some third-party router (nginx for instance), while when http option is set uwsgi can accept incoming HTTP requests and route them by … Read more
HTTP 499 in Nginx means that the client closed the connection before the server answered the request. In my experience is usually caused by client side timeout. As I know it’s an Nginx specific error code.
Just ran into this problem. I don’t know if it’s the same thing that hit your code, but for me the root cause was because I forgot to put name= on the last argument of the url (or path in Django 2.0+) function call. For instance, the following functions throw the error from the question: … Read more