plex_request_nginx.conf

# https://github.com/toomuchio/plex-nginx-reverseproxy/blob/master/nginx.conf

ssl_session_cache shared:SSL:10m;
ssl_session_timeout 10m;

server {
    send_timeout 100m; #Some players don't reopen a socket and playback stops totally instead of resuming after an extended pause (e.g. Chrome)

    #Faster resolving, improves stapling time. Timeout and nameservers may need to be adjusted for your location Google's have been used here.
    resolver 8.8.4.4 8.8.8.8 valid=300s;
    resolver_timeout 10s;

    # SSL_DISABLED_BEGIN
        listen 8000;
    # SSL_DISABLED_END

    # SSL_ENABLED_BEGIN
        listen 8000 ssl http2;
        # ssl 
        # ssl    on;   on;
        ssl_certificate    ${plex_request_ssl_path}/fullchain.pem;
        ssl_certificate_key    ${plex_request_ssl_path}/privkey.pem;
        # ssl_certificate /etc/nginx/cert.pem;
        # ssl_certificate_key /etc/nginx/key.pem;

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_prefer_server_ciphers on;
        #Intentionally not hardened for security for player support and encryption video streams has a lot of overhead with something like AES-256-GCM-SHA384.
        ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';

        #Why this is important: https://blog.cloudflare.com/ocsp-stapling-how-cloudflare-just-made-ssl-30/
        ssl_stapling on;
        ssl_stapling_verify on;
        #For letsencrypt.org you can get your chain like this: https://esham.io/2016/01/ocsp-stapling
        ssl_trusted_certificate ${plex_request_ssl_path}/chain.pem;

        #Reuse ssl sessions, avoids unnecessary handshakes
        #Turning this on will increase performance, but at the cost of security. Read below before making a choice.
        #https://github.com/mozilla/server-side-tls/issues/135
        #https://wiki.mozilla.org/Security/Server_Side_TLS#TLS_tickets_.28RFC_5077.29
        #ssl_session_tickets on;
        ssl_session_tickets off;

        #Use: openssl dhparam -out dhparam.pem 2048 - 4096 is better but for overhead reasons 2048 is enough for Plex.
        ssl_dhparam ${plex_request_ssl_path}/dhparam.pem;
        ssl_ecdh_curve secp384r1;
    # SSL_ENABLED_END

    #Plex has A LOT of javascript, xml and html. This helps a lot, but if it causes playback issues with devices turn it off. (Haven't encountered any yet)
    gzip on;
    gzip_vary on;
    gzip_min_length 1000;
    gzip_proxied any;
    gzip_types text/plain text/css text/xml application/xml text/javascript application/x-javascript image/svg+xml;
    gzip_disable "MSIE [1-6]\.";

    #Nginx default client_max_body_size is 1MB, which breaks Camera Upload feature from the phones.
    #Increasing the limit fixes the issue. Anyhow, if 4K videos are expected to be uploaded, the size might need to be increased even more
    client_max_body_size 100M;

    #Forward real ip and host to Plex
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    #When using ngx_http_realip_module change $proxy_add_x_forwarded_for to '$http_x_forwarded_for,$realip_remote_addr'
    proxy_set_header Sec-WebSocket-Extensions $http_sec_websocket_extensions;
    proxy_set_header Sec-WebSocket-Key $http_sec_websocket_key;
    proxy_set_header Sec-WebSocket-Version $http_sec_websocket_version;
    # Plex Headers
    proxy_set_header X-Plex-Client-Identifier $http_x_plex_client_identifier;
    proxy_set_header X-Plex-Container-Size $http_x_plex_container_size;
    proxy_set_header X-Plex-Container-Start $http_x_plex_container_start;
    proxy_set_header X-Plex-Device $http_x_plex_device;
    proxy_set_header X-Plex-Device-Name $http_x_plex_device_name;
    proxy_set_header X-Plex-Platform $http_x_plex_platform;
    proxy_set_header X-Plex-Platform-Version $http_x_plex_platform_version;
    proxy_set_header X-Plex-Product $http_x_plex_product;
    proxy_set_header X-Plex-Token $http_x_plex_token;
    proxy_set_header X-Plex-Version $http_x_plex_version;
    proxy_set_header X-Plex-Nocache $http_x_plex_nocache;
    proxy_set_header X-Plex-Provides $http_x_plex_provides;
    proxy_set_header X-Plex-Device-Vendor $http_x_plex_device_vendor;
    proxy_set_header X-Plex-Model $http_x_plex_model;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $http_x_forwarded_for;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;

    #Websockets
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";

    #Buffering off send to the client as soon as the data is received from Plex.
    proxy_redirect off;
    proxy_buffering off;

    location / {
        proxy_pass ${plex_server_host};
        proxy_read_timeout 86400;

        proxy_hide_header 'Access-Control-Allow-Origin';
        proxy_hide_header 'Access-Control-Allow-Methods';
        proxy_hide_header 'Access-Control-Allow-Headers';

        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE, PATCH';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';

        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE, PATCH';
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
            add_header 'Access-Control-Max-Age' 1728000;
            add_header 'Content-Type' 'text/plain; charset=utf-8';
            add_header 'Content-Length' 0;
            return 204;
        }

        # return 302 https://<PLEX_PUBLIC_HOST>$request_uri;

        # access_log logs/plex.access.log;

        # # enable the next two lines for http auth
        # auth_basic "Restricted";
        # auth_basic_user_file /config/nginx/.htpasswd;

        # enable the next two lines for ldap auth
        # auth_request /auth;
        # error_page 401 =200 /ldaplogin;
    }

    location /auth {
        proxy_pass http://unix:/app/sockets/plex_authentication.sock;
    }

    location /web/index.html {
        proxy_pass ${plex_server_host}/web/index.html;

        # access_log logs/plex.access.log;

        sub_filter '</head>' '<script>
        function checkToken() {
            var token = localStorage.getItem("myPlexAccessToken");
            if (token) {
                sendTokenToServer(token);
                return true;
            }
            return false;
        }

        function sendTokenToServer(token) {
            fetch("/auth/token", {
                method: "POST",
                headers: {
                    "Content-Type": "application/json",
                },
                body: JSON.stringify({token: token}),
            })
            .then(response => {
                if (response.status === 201) {
                    localStorage.setItem("tokenFound", "true");
                }
            });
        }

        function hasFoundBefore() {
            return localStorage.getItem("tokenFound") === "true";
        }

        if (!hasFoundBefore()) {
            if (!checkToken()) {
                var attempts = 0;
                var interval = setInterval(function() {
                    if (checkToken() || ++attempts >= 60) {
                        clearInterval(interval);
                    }
                }, 1000);
            }
        }
        </script></head>';
        sub_filter_once on;
    }

    location = /library/all {
        proxy_pass http://unix:/app/sockets/plex_request.sock;

        # access_log logs/plex.access.log;
    }

    location ~ ^/library/metadata/[^/]+/children$ {
        proxy_pass http://unix:/app/sockets/plex_request.sock;

        # access_log logs/plex.access.log;
    }

    location /library/request/ {
        proxy_pass http://unix:/app/sockets/plex_request.sock;
        
        # access_log logs/plex.access.log;
    }
}