wasm::multipart: missing fn headers()

[bitfl0wer]

Currently (v0.11.22), compiling for --target=wasm32-unknown-unknown leads to a missing fn headers() for setting the headers of a multipart form. It seems to me, that the wasm implementation is simply missing the method fn headers in impl Part and impl PartMetadata respectively. I have forked the repository, added the two missing methods into a branch based on tag 0.11.2, and reqwest compiles just fine for the wasm target. I haven't been able to test the method yet though.

Was it intended for these functions to be missing for wasm?

[seanmonstar]

If a method is missing, and adding it doesn't require adding a new dependency or exposing something unique to WASM, then we likely just forgot about it.

[bitfl0wer]

Thanks for the quick reply!

I have opened a PR which hopefully resolves this issue.