core/src/main/java/org/nanohttpd/protocols/http/content/CookieHandler.java
public void set(String name, String value, int expires) {
        this.queue.add(new Cookie(name, value, Cookie.getHTTPTime(expires)));
    }
public void set(String name, String value, int expires) {
        this.queue.add(new Cookie(name, value, Cookie.getHTTPTime(expires)));
    }
Sets a cookie.

@param name
The cookie's name.
@param value
The cookie's value.
@param expires
How many days until the cookie expires.