fix(cupertino_http): Handle code reasons that don't contain valid UTF-8

[brianquinlan]

Fixes #1825

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PR Health

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// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

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Breaking changes ✔️

Package	Change	Current Version	New Version	Needed Version	Looking good?
cupertino_http	Breaking	2.4.0	3.0.0-wip	3.0.0	✔️
web_socket	None	1.0.1	1.0.1	1.0.1	✔️

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pkgs/cupertino_http/lib/src/cupertino_web_socket.dart	💔 Not covered

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[github-actions]

PR Health

License Headers ✔️

// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

Files
no missing headers

All source files should start with a license header.

Unrelated files missing license headers

Files
pkgs/http/example/main.dart
pkgs/http_multi_server/test/cert.dart

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API leaks ✔️

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API.

Package	Leaked API symbol	Leaking sources

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Breaking changes ✔️

Package	Change	Current Version	New Version	Needed Version	Looking good?
web_socket	None	1.0.1	1.0.1	1.0.1	✔️

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[brianquinlan]

@matehat Does this seem reasonable to you?

[matehat]

@matehat Does this seem reasonable to you?

Yes, definitely! 🙏🏼