4.12.0: error[E0599]: no method named `h1_allow_half_closed` found for struct `HttpServiceBuilder<T, S, X, U>` in the current scope

[tessus]

Expected Behavior

it should compile

Current Behavior

compile error:

error[E0599]: no method named `h1_allow_half_closed` found for struct `HttpServiceBuilder<T, S, X, U>` in the current scope

Possible Solution

downgrade to 4.11.0

Steps to Reproduce (for bugs)

1. compile

                    let mut svc = HttpService::build()
                        .keep_alive(cfg.keep_alive)
                        .client_request_timeout(cfg.client_request_timeout)
                        .client_disconnect_timeout(cfg.client_disconnect_timeout)
                        .h1_allow_half_closed(cfg.h1_allow_half_closed)
                        .local_addr(addr);

2. receceive error

Context

dependapot upgraded actix-web from 4.11.0 to 4.12.0 and the CI failed.
I tried to build manually and got above error as well.

Your Environment

• Rust Version (I.e, output of rustc -V): rustc 1.91.0 (f8297e351 2025-10-28)
• Actix Web Version: 4.12.0

[thalesfragoso]

Try updating actix-http to 3.11.2 first, with e.g. cargo update.

I guess we are in the wrong here and should be more specific in actix-web Cargo.toml:

actix-web/actix-web/Cargo.toml

Line 137 in fe890a7

actix-http = "3.11"

[tessus]

Yep. That did it. Thanks a bunch.

We can close this issue, unless you want to keep it around for reference. In this case, it's probably better moving it to the discussions.
I leave it up to you. I consider it closed. Cheers again.

[wiktor-k]

Try updating actix-http to 3.11.2 first, with e.g. cargo update.

Ack, this works. Thanks for creating the ticket @tessus, it made fixing the issue on my end super easy 👋

[JohnTitor]

Closing, thank you for reporting and answering!