Document grpc-netty-shaded in Troubleshooting guide

[saturnism]

Please answer these questions before submitting your issue.

What version of gRPC are you using?

1.9

What did you expect to see?

Troubleshooting guide should also reference to grpc-netty-shaded for gRPC 1.9+

Also, add additional info re: #4163

[carl-mastrangelo]

@saturnism Are you taking this on?

[saturnism]

Yeah I'm working on a PR. What should we say if the user is on an unsupported platform, e.g., 32-bit Windows? Are there options at all? Thanks,

[carl-mastrangelo]

I think we still build the windows x86_32 protoc plugin. For java at least, that's the only windows specific portion.

Also, unsupported doesn't mean it doesn't work, it just means we can't easily test it. Several users have used grpc on on platforms (mips devices for instance). We accept patches by them if they get it to work, but again, this is best effort.

[saturnism]

@carl-mastrangelo tcnative doesn't have 32bit builds. is the recommendation to:

• build your own tcnative
• use Netty ALPN?

[saturnism]

quick ping. if there are no recommended options, then we'll make it clear in the doc too. Thanks!

[carl-mastrangelo]

@saturnism I think we should make it clear that 32 bit windows should use jetty ALPN, or compile netty_tcnative themselves. It would be too much effort to get 32bit windows builds for netty_tcnative.

[saturnism]

Thanks, I'll make that clear in the update!