reqwest fails on certain URLs?

[ldgabbay]

I have been trying to retrieve some files with reqwest but for some reason they seem to hang and fail, but the same request with curl or actix-web work just fine. I am not sure how to debug the inner workings of reqwest, but maybe someone can enlighten me?

As a demonstration, one of the URLs that fail only on reqwest is:
https://api2.bybit.com/linear/funding-rate/list?symbol=MATICUSDT&export=true
This URL takes ~6 seconds to generate the response, but it does work reliably. reqwest/hyper wait longer than this and fail rather than succeed.

The code I'm using is as simple as:

let response = reqwest::get(url).await?;
let _ = response.bytes().await?;

and the program fails with:

Error: reqwest::Error { kind: Request, url: Url { scheme: "https", cannot_be_a_base: false, username: "", password: None, host: Some(Domain("api2.bybit.com")), port: None, path: "/linear/funding-rate/list", query: Some("symbol=MATICUSDT&export=true"), fragment: None }, source: hyper::Error(IncompleteMessage) }

Again, curl and actix-web work just fine. For now, I've switched to actix-web, but I would much prefer to be based on reqwest/hyper. Please let me know if you have any suggestions, and if you can point me to ways to debug the issue. Thanks!

[seanmonstar]

This was solved in the hyper issue tracker as being a server that would hang if a user-agent header was not sent.