websocket nginx configuration

ws.imessage.loc.ssl.conf

# Install SSL Certificate
openssl req -x509 -out imessage.loc.crt -keyout imessage.loc.key \
  -newkey rsa:2048 -nodes -sha256 \
  -subj '/CN=imessage.loc' -extensions EXT -config <( \
   printf "[dn]\nCN=imessage.loc\n[req]\ndistinguished_name = dn\n[EXT]\nsubjectAltName=DNS:imessage.loc\nkeyUsage=digitalSignature\nextendedKeyUsage=serverAuth")
   
# Copy paste this nginx configuration

    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    upstream websocket {
        server imessage.loc:5300;
    }

    server {
        listen 443;
        
        ssl on;
        ssl_certificate /etc/nginx/conf.d/imessage.loc.crt;
        ssl_certificate_key /etc/nginx/conf.d/imessage.loc.key;


        location / {
                  proxy_pass http://websocket;
                  proxy_http_version 1.1;
                  proxy_set_header Upgrade $http_upgrade;
                  proxy_set_header Connection $connection_upgrade;


                      proxy_set_header Host $host;
                      proxy_set_header X-Real-IP $remote_addr;
                      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                      proxy_set_header X-Forwarded-Proto https;
                  proxy_redirect off;
              }
    }