[dart:io] Remove socket level checks for domain policy.

This partially reverts https://dart-review.googlesource.com/c/sdk/+/154180.
The main mechanism for setting domain policy is still useful as we will
use this to avoid insecure connections for higher level protocols (such
as HTTP and gRPC).

We already knew Android does not enforce network policy at socket level
but it turns out iOS does not as well:

> ATS doesn’t apply to calls your app makes to lower-level networking
> interfaces like the Network framework or CFNetwork. In these cases,
> you take responsibility for ensuring the security of the connection.

This also resolves the need to fix
https://github.com/dart-lang/sdk/issues/43223 as we are no longer
enforcing the policy at socket level.

Change-Id: I3913da8ea39dac2c5a70fdabe442775b18cfd0c5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/161581
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Mehmet Fidanboylu <mehmetf@google.com>
7 files changed
tree: 460c0908cf317c6f239be50d824ff5e3b52f264b
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. client/
  6. docs/
  7. pkg/
  8. runtime/
  9. samples/
  10. samples-dev/
  11. sdk/
  12. tests/
  13. third_party/
  14. tools/
  15. utils/
  16. .clang-format
  17. .gitattributes
  18. .gitconfig
  19. .gitignore
  20. .gn
  21. .mailmap
  22. .packages
  23. .style.yapf
  24. .vpython
  25. AUTHORS
  26. BUILD.gn
  27. CHANGELOG.md
  28. codereview.settings
  29. CONTRIBUTING.md
  30. DEPS
  31. LICENSE
  32. PATENT_GRANT
  33. PRESUBMIT.py
  34. README.dart-sdk
  35. README.md
  36. sdk_args.gni
  37. WATCHLISTS
README.md

Dart

A client-optimized language for fast apps on any platform

Dart is:

  • Optimized for UI: Develop with a programming language specialized around the needs of user interface creation

  • Productive: Make changes iteratively: use hot reload to see the result instantly in your running app

  • Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web

Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:

  • Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.

  • Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).

Dart platforms illustration

License & patents

Dart is free and open source.

See LICENSE and PATENT_GRANT.

Using Dart

Visit dart.dev to learn more about the language, tools, getting started, and more.

Browse pub.dev for more packages and libraries contributed by the community and the Dart team.

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents on our wiki.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.