Upload file via auto-generated OpenAPI specification with gRPC backend

[huan]

It seems that the support for the file upload with gRPC & OpenAPI generator is not very well.

1. The google.api.http has no annotation for file uploading...
2. The gRPC client streaming for file uploading is complicated...

Need to find a way to make it work because we need to send FileBox to our server...

Related Links

• https://github.com/grpc-ecosystem/grpc-gateway/issues/410
• https://github.com/grpc-ecosystem/grpc-gateway/issues/500
• https://github.com/grpc/grpc-web/issues/517#issuecomment-629609101
• https://github.com/grpc-ecosystem/grpc-gateway/issues/1666
• StackOverflow: gRPC + Image Upload
• https://github.com/grpc-ecosystem/grpc-gateway/pull/2258
• gRPC File Upload With Client Streaming

[emcfarlane]

👋 hello! Maybe my project could help with file uploads for gRPC transcoding: https://github.com/emcfarlane/larking