Failed to listen on 127.0.0.1 with tokio

[CfirTsabari]

when using tide with tokio.

#[tokio::main]
async fn main() -> Result<(), std::io::Error> {
    let mut app = tide::new();
    app.at("/").get(|_| async { Ok("Hello, world!") });
    app.listen("127.0.0.1:8090").await?;
    Ok(())
}

and when trying to access it I get the connection stuck

❯ curl http://127.0.0.1:8090/

working with async-std solve the problem,
listening to localhost instead of 127.0.0.1 should also solve this

[dependencies]
tokio = { version = "0.2", features = ["full"] }
tide = "0.8.0"

❯ cargo --version
cargo 1.43.0 (2cbe9048e 2020-05-03)
❯ rustc --version
rustc 1.43.1 (8d69840ab 2020-05-04)

[yoshuawuyts]

Thanks for raising this @CfirTsabari. Odd, yeah I ran into something similar this week. I couldn't quite pinpoint the root cause of the error, but it seems like Tokio isn't particularly happy to run sockets it didn't create.

We'll have to continue monitoring what we can do here (possibly async-rs/async-std#804 can help), but for now I think there's nothing more we can do right here. Thanks for sharing what you did to resolve it!