readCookies method
Returns a set of all the incoming cookies that had a valid signature attached. Any cookies without a signature, or with a signature that does not match the provided data, are not included in the output.
If an onInvalidCookie
callback is passed, then it will
be invoked for each unsigned or improperly-signed cookie.
Implementation
List<Cookie> readCookies(RequestContext req,
{void Function(Cookie)? onInvalidCookie}) {
return req.cookies.fold([], (out, cookie) {
var data = getCookiePayloadAndSignature(cookie.value);
if (data == null || (data[1] != computeCookieSignature(data[0]))) {
if (onInvalidCookie != null) {
onInvalidCookie(cookie);
}
return out;
} else {
return out..add(cookieWithNewValue(cookie, data[0]));
}
});
}