CHANGELOG doesn't explain what happened to `hyper::Client` or `HttpConnector`

[simbleau]

Version 1.0

Description It's pretty much impossible to update hyper/http to 1.0 for some complex projects that relied heavily on the implementation of Client/HttpConnector since it's not documented how to replace the functionality in the CHANGELOG.

See https://github.com/awslabs/aws-lambda-rust-runtime/issues/737 + https://github.com/awslabs/aws-lambda-rust-runtime/pull/740

[WhyNotHugo]

The documentation still refers to the Client type even though it's gone: https://docs.rs/hyper/1.0.1/hyper/client/conn/index.html

I've been trying to upgrade libdav (a caldav/carddav client) to hyper 1.0. The client in hyper_util::client::legacy::Client is quite different. It needs a generic Body type, which won't work for code that sends requests with different Body implementations.

I'm unsure what to do. The new client is labeled "legacy", and I'd need a non-trivial amount of redesign to integrate with it. Are there plans to introduce a new Client type? I'm trying to decide if I should redesign my entire code around the new Client in hyper_util, or if it's best to wait for for a new Client implementation.

[sfackler]

The 0.14 client also has a generic body type.

[WhyNotHugo]

True, it did. The default for 0.14 worked for me with both Body::from(String) and Body::empty(), but now empty is Empty::new(), which is a different type. I'm not yet sure what I'd use in place of Body::from(String).

[WhyNotHugo]

I think that my main point of confusion is due to:

rename Body struct to Incoming

It's not immediately obvious what should be used in its place.

@simbleau For Client and HttpConnector you need:

hyper-util = { version = "0.1.1", features = ["client", "client-legacy", "http1"] }

[WhyNotHugo]

The CHANGELOG mentions that client::connect was dropped and links to 5e206883984fe6de2812861ec363964d9, which points to the new crate.

[simbleau]

The CHANGELOG mentions that client::connect was dropped and links to 5e20688, which points to the new crate.

This is very helpful... Let me see if I hit another brick wall.

+1!

[seanmonstar]

There's also https://hyper.rs/guides/1/upgrading/, which while a bit bare, tries to gather all the pain points that the CHANGELOG doesn't seem to address. Anything specific that is hard to find, we can add to that guide.

[allan2]

It would be nice if it were mentioned that HttpConnector implements tower_service::Service<Uri> in 1.0 instead of hyper::service::Service<Uri> in 0.14.

It was easy for me to miss this when converting IO traits from Tower to hyper. I wasn't expecting it to go the other way.