nginx.conf.erb

# This is an nginx config suitable for heroku.
# See client/nginx.conf for a more general starting point.

daemon off;
#Heroku dynos have at least 4 cores.
worker_processes <%= ENV['NGINX_WORKERS'] || 4 %>;

events {
    use epoll;
    accept_mutex on;
    worker_connections <%= ENV['NGINX_WORKER_CONNECTIONS'] || 1024 %>;
}

http {
    gzip on;
    gzip_static on;
    gzip_comp_level 2;
    gzip_min_length 64;

    server_tokens off;

    log_format l2met 'measure#nginx.service=$request_time request_id=$http_x_request_id';
    access_log <%= ENV['NGINX_ACCESS_LOG_PATH'] || 'logs/nginx/access.log' %> l2met;
    error_log <%= ENV['NGINX_ERROR_LOG_PATH'] || 'logs/nginx/error.log' %>;

    types {
        application/manifest+json webmanifest;
    }
    include mime.types;
    default_type application/octet-stream;
    sendfile on;

    #Must read the body in 5 seconds.
    client_body_timeout 5;

    upstream app_server {
        server unix:/tmp/nginx.socket fail_timeout=0;
    }

    server {
        listen <%= ENV["PORT"] %>;
        server_name _;
        keepalive_timeout 5;

        root "/app/client/dist";

        location /api {
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host $http_host;
            proxy_pass http://app_server;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
        }

        location /assets {
            expires 365d;
        }

        location ~ ^/games/(.*)/?$ {
            try_files "" /index.html;
        }

        location = /cast {
            try_files "" /cast.html;
        }

        location = / {
            try_files "" /index.html;
        }

        error_page 404 /;
    }
}