I have been testing my Flask app locally and then deploying it on an AWS EC2 instance. Where is the default port defined? If I don't specify any port, it uses port 5000 locally; when deployed it uses port 80. Is it defined in the Flask code or is it part of the web server settings?
Flask's (Werkzeug's) dev server defaults to port 5000 if no port is specified. This is because binding to ports below 1024 requires elevated permissions.
You are not (or if you are, you shouldn't be) using the dev server in production, you're using a real WSGI server and HTTP server, such as uWSGI and Nginx, or Amazon's WSGI handler. The web server, independent of Flask, binds to port 80.
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I'm trying to run my flask app on localhost with https and port 80. It works, but turns out I need to specify the port in the browser url when navigating to the app.
So, if I go to https://localhost on my browser, the app doesn't show, but if I go to https://localhost:80 the page works.
Is there a way to reach the app without specifying the port when typing the url? Shoudln't it be 80 by default when I don't specify the port?
Thanks in advance!
I'm expecting to reach the website without needing to specify the port when it is 80.
The problem is that you are running your app on port 80(default port for http) with https configured.
When accessing https://localhost the browser tries to access the port 443 (the default port for https), while your app is hosted on port 80.
Changing the hosting port to 443 should allow you to access https://localhost without specifying the port.
I have currently config nginx gunicorn everything is working fine i am building a rest api the django should work something like this ip:port but instead if i enter the IP address in the browser the django application is working there is no port used how to change it to run on a specified port.
your nginx use port 80 by default
Port 80 is the port number assigned to commonly used internet communication protocol, Hypertext Transfer Protocol (HTTP). It is the port from which a computer sends and receives Web client-based communication and messages from a Web server and is used to send and receive HTML pages or data.
You can run gunicorn specifying the port. In the example below 8000. And then point nginx to it.
gunicorn application_module --bind=0.0.0.0:8000
I am running a python app on port 8080 in a subdirectory on my apache2 webspace on my ubuntu server. I can access this application via server ip and port 8080. I got a domain which refers to my website. I want to access this python app via domain/subdirectory. How can i do this?
I have server on an external hardware running at port number 162.74.90.100 and i can access all the files and terminal on it using SSH Secure Shell software.
Now i run a Python-Flask server (127.0.0.1:5000) on the existing server (ie. 162.74.90.100 ) which is supposed to run a website.
To access the website, I tried running the IP addresses in a browser like 162.74.90.100/127.0.0.1:5000 but it does not work.
can anyone suggest how can I access 127.0.0.1:5000 using browser? I am stuck and cannot find any relevant documentation.
You can't, not directly. By running on 127.0.0.1 (localhost), you are explicitly not binding to a public IP address and are not visible to the outside world.
Your options are to:
Use SSH port forwarding to redirect traffic from your own machine to that localhost port; add -L 5000:localhost:5000 to your ssh command line and access the Flask server at http://localhost:5000. Use this option if only you should be able to access the server.
Use a 3rd party service like ngrok to tunnel from a public host to your Flask server.
Use another web server serving on a public IP address forwarding connections to localhost:5000. See Proxy Setups in the Flask deployment documentation.
Restart the Flask server to bind to a public IP address, not 127.0.0.1. This is not recommended, as the development web server that comes bundled with Flask is not really suited for the rough world that is the public internet. You can do this by giving app.run() a host argument:
app.run(host='162.74.90.100')
or (using the flask command-line tool) using the --host command-line argument:
flask run --host 162.74.90.100
to bind to your public IP address, or use 0.0.0.0 to bind to all available IP addresses on your server. This will only work if your server is connected directly to the internet (not behind a router) and the firewall allows connections to the port; you'll need to configure the router and firewall otherwise.
The reason why you are not able access your application is because you are not running it off the interface(162.74.90.100, in your case) where you need to access it from.
Since you are using a flask application, and I am assuming your run code looks something like this...
if __name__ == '__main__':
app.run()
This would by default associate your application to the localhost(127.0.0.1) at port 5000. Now for the application to run on port 5000 exposed to outside world you either do this....
if __name__ == '__main__':
app.run(host='162.74.90.100')
or this...
if __name__ == '__main__':
app.run(host='0.0.0.0')
I would suggest latter which runs the application off all the interfaces, hence being accessible from the outside world. Once you have made this change, you could access your application at 162.74.90.100:5000
I am trying to use the flask development server at an office with a strict proxy that blocks the default 127.0.0.1:5000 host and port. I have tried using different hosts and ports with no success. I have also tried setting up Flask with XAMPP on Windows via mod_wsgi with no success. I am looking for an option to continue testing flask on my local machine with as little setup as possible as my production environment is a PaaS and does not use the same setup as my local machine.