Hi i was config my nginx block to redirect all www to non-www, this is my config:

server {    listen       80;    server_name  mysite.com www.mysite.com;    return       301 https://mysite.com$request_uri; }
 server {    listen       443 ssl http2;    server_name  mysite.com;    root   /usr/share/nginx/html;     ssl on;    ssl_certificate /ssl/ssl-bundle.crt;    ssl_certificate_key /ssl/mysite.key;    ssl_session_cache shared:SSL:20m;    ssl_session_timeout 10m;    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;    ssl_prefer_server_ciphers on;    ssl_ciphers ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:!DSS;    ssl_buffer_size 8k;    ssl_session_tickets off;     ssl_stapling on;    ssl_stapling_verify on;    ssl_trusted_certificate /ssl/ssl-trusted.crt;    resolver 8.8.8.8 8.8.4.4 valid=300s;    resolver_timeout 10s;     #add_header X-Content-Type-Options "nosniff";     location / {        index index.php index.html index.htm;    try_files $uri $uri/ /index.php?$uri&$args;    }     location /internal_data/ {        internal;        allow 127.0.0.1;        deny all;        }         location /library/ {        internal;        allow 127.0.0.1;        deny all;        }     location ~ \.php$ {    try_files $uri =404;    fastcgi_pass 127.0.0.1:9000;    fastcgi_index index.php;    fastcgi_param SCRIPT_FILENAME  $document_root$fastcgi_script_name;    include fastcgi_params;    }     location ~* \.(?:ico|css|gif|jpe?g|js|png|svg|svgz|swf)(\?.+)?$ {        access_log              off;        log_not_found           off;        expires                 1y;    } 
location ~ \.(jpe?g|png|gif)$ {     valid_referers none blocked mysite.com *.mysite.com;     if ($invalid_referer) {        return   403;        }    } }

working fine just for non-www to https but not work from www to non-www,
this is result from curl -I http://www.mysite.com :

curl: (6) Couldn't resolve host 'www.mysite.com'

is there any iam miss?
thank you.