C# and Wasm Interface Types: Hands Across the C
summary
Shows a working bridge where C# assemblies run under the .NET WASI preview and interoperate with Wasm Interface Types via C glue and the .NET embedding API. Uses wit-bindgen-generated C glue and wasi-sdk + clang to export a console WIT interface and import host services; a Rust host calls the exported function. Demonstrates a live example, measures ~30–40 ms cold startup mitigated by wiser snapshot warmstart, 20 MB module size, and ongoing stability/tooling gaps.
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chapters (5)
- 0:00Introduction to C# and WebAssembly
- 2:10Evolution of .NET and Wasm
- 8:38Building Wasm interop
- 27:46Challenges and future
- 31:11Conclusion
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