Hide Error: No matching routes for OPTIONS about rocket_cors HOT 3 OPEN

Recently I encountered the same issue and found a workaround that may be helpful for anyone hitting this problem.

I am using fairing as well and despite the crate documentation stating OPTIONS requests would be automatically handled, it doesn't work. The way I managed to make it work was to manually add the routes using the provided rocket_cors::catch_all_options_routes() function and then adding a clone of the Cors struct to be "managed" by the Rocket instance:

    rocket::ignite()
        .mount("/", routes![route1, route2, route3])
        .mount("/", rocket_cors::catch_all_options_routes())
        .attach(DbConn::fairing())
        .attach(cors.clone())
        .manage(config)
        .manage(cors)
        .launch();

I hope that helps.

from rocket_cors.

I would like to know how to fix this too.

from rocket_cors.

Hi,

I have a similar issue and with the .mount("/", rocket_cors::catch_all_options_routes()); the error Not found disappeared but I got a new one.

    => Matched: OPTIONS /<catch_all_options_route..> [9223372036854775807]
    => Error: Attempted to retrieve unmanaged state!
    => Outcome: Failure
    => Warning: Responding with 500 Internal Server Error catcher.
    => Warning: No 500 or default catcher found. Using Rocket default catcher.
    => Response succeeded.

I use the master branch of both rocket/rocket_cors;

• source = "git+https://github.com/lawliet89/rocket_cors#305971023d0edf29d10bf5af1d385481b0b5245f"
• source = "git+https://github.com/SergioBenitez/Rocket#9d45e786bbac67a5fec0b1cd4653997d84dba4e4"

As a side note I used fairing, I also try to add a manual_options as well with Guard and same error and no println; could arrive before even enter the handler; is it possible ?

/// Manually mount an OPTIONS route for your own handling
#[options("/here")]
fn manual_options(cors: Guard<'_>) -> Responder<'_, '_, &str> {
    println!("Youhou, I'm here");
    cors.responder("Manual OPTIONS preflight handling")
}

Not sure how to investigate it further,
I am new to rust but I am ready to learn and help on this if I can

Thanks in advance,

from rocket_cors.