awc: HTTP2 + set Host header + nginx server = 400 bad request

[Originalimoc]

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Expected Behavior

No error.

Current Behavior

nginx will reply 400

Possible Solution

debug why the raw data queried is different:

[Mon Nov 04 15:24:49.726940 2024] [http2:debug] [pid 672786:tid 140502629656128] h2_session.c(353): [client 4.3.2.1:36688] AH10302: h2_stream(672786-8-1,IDLE): recv FRAME[HEADERS[length=122, hend=1, stream=1, eos=0]], frames=2/2 (r/s)
[Mon Nov 04 15:24:49.727757 2024] [:notice] [pid 672786:tid 140502789322304] [remote 4.3.2.1:36688] Header: Content-Length: 132
[Mon Nov 04 15:24:49.727871 2024] [:notice] [pid 672786:tid 140502789322304] [remote 4.3.2.1:36688] Header: Accept: */*
[Mon Nov 04 15:24:49.727908 2024] [:notice] [pid 672786:tid 140502789322304] [remote 4.3.2.1:36688] Header: Accept-Encoding: br, gzip, deflate, zstd
[Mon Nov 04 15:24:49.727938 2024] [:notice] [pid 672786:tid 140502789322304] [remote 4.3.2.1:36688] Header: Content-Type: application/json
[Mon Nov 04 15:24:49.727966 2024] [:notice] [pid 672786:tid 140502789322304] [remote 4.3.2.1:36688] Header: Authorization: Bearer 123456
[Mon Nov 04 15:24:49.727992 2024] [:notice] [pid 672786:tid 140502789322304] [remote 4.3.2.1:36688] Header: Host:foo.bar

Why length=122 when you call insert_header() or insert_header_if_none(), and length=132 if you don't call/let awc auto add it according to query URL. but Content-Length always 132.

Steps to Reproduce (for bugs)

Maybe later

Your Environment

Debian 12 + tried both rustls and openssl, h2 problem

• Rust Version (I.e, output of rustc -V): 1.81
• Actix Web Version: latest stable