Is there a way to set retry and max retry times for client request ?

[mingmwang]

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Is there a way to set the retry times for failed client requests?

And regarding the client connection settings, besides the keep-alive settings, is there a way to set an idle time to close the connection? We want to reuse the connection as much as possible, but if there is no real traffic(except for pings) within a time(say 30 mins), we want the connection to be closed.

let endpoint = tonic::transport::Endpoint::new(dst)?
    .connect_timeout(Duration::from_secs(20))
    .timeout(Duration::from_secs(20))
    .tcp_keepalive(Option::Some(Duration::from_secs(3600)))
    .http2_keep_alive_interval(Duration::from_secs(300))
    .keep_alive_timeout(Duration::from_secs(20))
    .keep_alive_while_idle(true);

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[mingmwang]

In Netty, there is an IdleStateHandler which can trigger event to close the idle tcp connections. Not sure whether Hyper has a way to achieve the same effects or not.

[seanmonstar]

hyper does not retry requests. Looks like you're using tonic, which integrates with tower. You can use the tower::retry middleware to do so. Define a Policy that describes what responses/errors are safe to retry, and I recommend using the Budget in the same module to implement a limit, instead of a simple counter.

[seanmonstar]

We have an issue of the ways we're making generic retries better, you can follow along (and give feedback) here: https://github.com/tower-rs/tower/issues/682