feat(transport/dotnet): add .NET transport interop test plan

[K-21]

Summary

Added .NET v1.0 transport interoperability .

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What’s included

• Transport interop test plan for .NET v1.0
• Covered capabilities:
  • Transports: TCP, QUIC-v1
  • Security: Noise
  • Muxer: Yamux
• Compatibility matrix across multiple libp2p implementations
• .gitattributes to enforce consistent LF line endings across platforms

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Why .gitattributes was added

On Windows, Git may default to CRLF, which can:

• introduce noisy diffs in YAML files
• cause inconsistent formatting
• break tooling that expects LF line endings

Adding .gitattributes enforces LF-only line endings, ensuring:

• clean and deterministic diffs
• consistent test-plan formatting
• better cross-platform contributor experience

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DOTNET-V1.0 TRANSPORT INTEROP COMPATIBILITY

Capabilities: tcp, quic-v1 | noise | yamux

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WILL WORK (21 implementations)

Implementation	TCP	QUIC	Via
rust-v0.53	✓	✓	tcp+noise+yamux, quic-v1
rust-v0.54	✓	✓	tcp+noise+yamux, quic-v1
rust-v0.55	✓	✓	tcp+noise+yamux, quic-v1
rust-v0.56	✓	✓	tcp+noise+yamux, quic-v1
go-v0.38	✓	✓	tcp+noise+yamux, quic-v1
go-v0.39	✓	✓	tcp+noise+yamux, quic-v1
go-v0.40	✓	✓	tcp+noise+yamux, quic-v1
go-v0.41	✓	✓	tcp+noise+yamux, quic-v1
go-v0.42	✓	✓	tcp+noise+yamux, quic-v1
go-v0.43	✓	✓	tcp+noise+yamux, quic-v1
go-v0.44	✓	✓	tcp+noise+yamux, quic-v1
go-v0.45	✓	✓	tcp+noise+yamux, quic-v1
python-v0.x	✓	✓	tcp+noise+yamux, quic-v1
js-v1.x	✓	✗	tcp+noise+yamux
js-v2.x	✓	✗	tcp+noise+yamux
js-v3.x	✓	✗	tcp+noise+yamux
nim-v1.14	✓	✗	tcp+noise+yamux
jvm-v1.2	✓	✓	tcp+noise+yamux, quic-v1
c-v0.0.1	✓	✓	tcp+noise+yamux, quic-v1
zig-v0.0.1	✗	✓	quic-v1 only
eth-p2p-z-v0.0.1	✗	✓	quic-v1 only

WILL NOT WORK (10 implementations)

Implementation	Reason
chromium-js-v1.x	No tcp, no quic-v1 (browser)
chromium-js-v2.x	No tcp, no quic-v1
firefox-js-v1.x	No tcp, no quic-v1
firefox-js-v2.x	No tcp, no quic-v1
webkit-js-v1.x	No tcp, no quic-v1
webkit-js-v2.x	No tcp, no quic-v1
chromium-rust-v0.53	No tcp, no quic-v1
chromium-rust-v0.54	No tcp, no quic-v1
chromium-rust-v0.56	No tcp, no quic-v1

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Summary

• TCP compatible: 19 implementations
• QUIC compatible: 15 implementations
• Total unique: 21 implementations
• Cannot work: 10 (all browser-based)

Note: QUIC , TLS support is currently marked as WIP in the dotnet-libp2p README.md.

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[K-21]

@dhuseby @seetadev @flcl42
Can you please review it and let me know if there are any changes?

[flcl42]

Why do we need it?

[K-21]

Why do we need it?

WSL helps on a developer machine, but it doesn’t stop Windows editors or Git from committing CRLFs — .gitattributes enforces LF for everyone so shell scripts don’t break .