grpc-js: disable http proxy with client options

Is your feature request related to a problem? Please describe.

When a system level http proxy is set (eg with http_proxy), and i attempt to connect to a grpc server running on localhost, the client never connects. I don’t think it makes sense for requests to localhost to go through the http proxy.

Describe the solution you’d like

I would like to disable http proxying in the client with a client option, eg { 'grpc.enable_http_proxy': 0 }

Describe alternatives you’ve considered

Using env vars work, eg: no_grpc_proxy=localhost,127.0.0.0/8, but i don’t want to set global vars. I have built an application that attempts to connect to a localhost grpc server and I don’t want to set global vars that might have side effects with other applications that use grpc.

I am more than happy to send a PR myself, but i’d like to get some feedback first. Thanks!

[murgatroid99]

I have published 1.0.5 with your change.

[badsyntax]

Thanks, have tested this change in my app it’s working as expected 👍