backend/README.md

Vera backend

http://qa.cs.washington.edu:8372/

This demo runs on port 8372, so make sure this port is whitelisted in UFW:

sudo ufw allow 8372
sudo ufw status

Also, make sure port 80 and 443 are whitelisted.

This demo requires HTTPS, so make sure HTTPS is enabled on this server. This is what I did:

1. Follwing https://blog.miguelgrinberg.com/post/running-your-flask-application-over-https
2. Make sure nginx is running: sudo service nginx status
3. Add the following lines to /etc/nginx/nginx.conf

    server {
        listen 80; 
        server_name qa.cs.washington.edu;
        location ~ /.well-known {
            root /home/gary/cd-pi-demo/backend;
        }   
        location / { 
            return 301 https://$host$request_uri;
        }   
    }   

1. Use certbot to create a certificate: sudo certbot certonly --webroot -w /home/gary/cd-pi-demo/backend/ -d qa.cs.washington.edu
2. Add the following lines to /etc/nginx/nginx.conf

    server {
        listen 443 ssl http2;
        server_name qa.cs.washington.edu;
        ssl_certificate /etc/letsencrypt/live/qa.cs.washington.edu/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/qa.cs.washington.edu/privkey.pem;
        # ... 
    }   

Then, run the following command to spin up the demo:

CUDA_VISIBLE_DEVICES=1 sudo ~/anaconda3/envs/default/bin/python run.py

To test the demo, run this command in bash:

curl https://qa.cs.washington.edu:8372 -X POST -d '{"statement": "Hello."}' -H "content-type: application/json"