# Generated by nginxconfig.io
# https://www.digitalocean.com/community/tools/nginx

user www-data;
pid /run/nginx.pid;
worker_processes auto;
worker_rlimit_nofile 65535;

events [
	multi_accept on;
	worker_connections 65535;
}

http {
	charset utf-8;
	sendfile on;
	tcp_nopush on;
	tcp_nodelay on;
	server_tokens off;
	log_not_found off;
	types_hash_max_size 2048;
	types_hash_bucket_size 64;
	client_max_body_size 128M;

	# MIME
	include mime.types;
	default_type application/octet-stream;

	log_format combined_ssl '$remote_addr - $remote_user [$time_local] $ssl_protocol/$ssl_cipher "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"';

	access_log /var/log/nginx/access.log combined_ssl;
	error_log /var/log/nginx/error.log warn;

	# SSL
	ssl_session_timeout 1d;
	ssl_session_cache shared:SSL:10m;
	ssl_session_tickets off;

	# Diffie-Hellman parameter for DHE ciphersuites
	ssl_dhparam /etc/nginx/dhparam.pem;

	# Mozilla Intermediate configuration
	ssl_protocols TLSv1.2 TLSv1.3;
	ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
	ssl_prefer_server_ciphers off;

	# OCSP Stapling
	ssl_stapling on;
	ssl_stapling_verify on;
	resolver 1.1.1.1 1.0.0.1 8.8.8.8 8.8.4.4 208.67.222.222 208.67.220.220 valid=60s;
	resolver_timeout 2s;

	limit_req_status 429;
	limit_conn_status 429;

	limit_conn_zone $binary_remote_addr zone=conn_limit_per_ip:10m;
	limit_req_zone $binary_remote_addr zone=req_limit_per_ip:10m rate=5r/s;

	# Do not wait for the client body or headers more than 5s (avoid slowloris attack)
	client_body_timeout 5s;
	client_header_timeout 5s;
	send_timeout 5;

	# Connection header for WebSocket reverse proxy
	map $http_upgrade $connection_upgrade
	{
		default upgrade;
		"" close;
	}

	map $remote_addr $proxy_forwarded_elem
	{

		# IPv4 addresses can be sent as-is
		~^[0-9.]+$ "for=$remote_addr";

		# IPv6 addresses need to be bracketed and quoted
		~^[0-9A-Fa-f:.]+$ "for=\"[$remote_addr]\"";

		# Unix domain socket names cannot be represented in RFC 7239 syntax
		default "for=unknown";
	}

	map $http_forwarded $proxy_add_forwarded
	{

		# If the incoming Forwarded header is syntactically valid, append to it
		"~^(,[ \\t]*)*([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?(;([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?)*([ \\t]*,([ \\t]*([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?(;([!#$%&'*+.^_`|~0-9A-Za-z-]+=([!#$%&'*+.^_`|~0-9A-Za-z-]+|\"([\\t \\x21\\x23-\\x5B\\x5D-\\x7E\\x80-\\xFF]|\\\\[\\t \\x21-\\x7E\\x80-\\xFF])*\"))?)*)?)*$" "$http_forwarded, $proxy_forwarded_elem";

		# Otherwise, replace it
		default "$proxy_forwarded_elem";
	}

	# Load configs
	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;
}