I've got a backend running rocket.rs which my flutter web app sends a request to, but it can't get past the OPTIONS response.
I have tried adding CORS (rocket_cors) to the backend and having a options response, but it still sends back:
Error: XMLHttpRequest error.
dart:sdk_internal 124039:30 get current
packages/http/src/browser_client.dart.lib.js 214:124 <fn>
I have added the following to my rocket project:
#[options("/")]
fn send_options<'a>(path: PathBuf) -> Response<'a> {
let mut res = Response::new();
res.set_status(Status::new(200, "No Content"));
res.adjoin_header(ContentType::Plain);
res.adjoin_raw_header("Access-Control-Allow-Methods", "POST, GET, OPTIONS");
res.adjoin_raw_header("Access-Control-Allow-Origin", "*");
res.adjoin_raw_header("Access-Control-Allow-Credentials", "true");
res.adjoin_raw_header("Access-Control-Allow-Headers", "Content-Type");
res
And my flutter app is running this request:
Future<String> fetchData() async {
final data2 = await http.get("http://my-web-site.com").then((response) { // doesn't get past here
return response.body;
});
return data2;
}
Question: Is this the proper way to respond to OPTION requests, and if not, how can I implement it in rocket.rs?
GET
requests, the browser skips theOPTIONS
preflight and performs theGET
directly. So perhaps you need to include the CORS headers in theGET
handler as well. – Thulium