read cookie in nginx.md

read cookie in nginx.md

1 option

server {

    [...]
    set $new_cookie $http_cookie;

    if ($http_cookie ~ "(.*)(?:^|;)\s*some_cookie=[^;]+(.*)") {
        set $new_cookie $1$2;
    }
    proxy_set_header Cookie $new_cookie;

    location / {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_redirect off;

        if (!-f $request_filename) {
            proxy_pass http://backend;
            break;
        }
    }
} 

2 option

 if ($http_cookie ~ "~*somewname=(?<token>[^;]+)") {
            set $new_cookie $1$2;
 }
 if ($new_cookie ~ "^[;]+(.*)") {
    set $new_cookie $1;
 }