Coming from 0.6, Option<ConnectInfo<SocketAddr>> is not possible anymore?

[Geobert]

Summary

Hi,

I’m migrating from axum 0.6 and had some Option<ConnectInfo<SocketAddr>> as extractors and they are now rejected as ConnectInfo doesn’t implement OptionalFromRequestParts it seems.

Is there a way around this?

axum version

0.8

[mladedav]

You can switch fromOption to Result.

[Geobert]

Thanks for your answer.

In the parameters of the handler?

async fn handle(connect_info: Option<ConnectInfo<SocketAddr>>) -> into Response {
    // ...
}

to

async fn handle(connect_info: Result<ConnectInfo<SocketAddr>>) -> into Response {
    // ...
}

? with which error type?

[mladedav]

If you look up the FromRequestParts implementation, it defines the Rejection type, that's what you need to use as the error. Which in this case will be ExtensionRejection if I didn't overlook something.

[2ndDerivative]

dump question, but can ConnectInfo with SocketAddr even fail?

[mladedav]

Sure, for example if you use into_make_service instead of into_make_service_with_connect_info or if you use a wrong type parameter.