Need to bundle ngrok binary in the npm package, or make it optional

[thebetterjort]

We use a corporate man in the middle to decrypt network traffic. Our installed cert is self-signed and servers throw a big fit about it. When trying to run

create-react-native-app my-project

I get the following error:

/react-native-onesignal/examples/my-project/node_modules/@exponent/ngrok: Command failed.
Exit code: 1
Command: sh
Arguments: -c node ./postinstall.js
Directory: /react-native-onesignal/examples/my-project/node_modules/@exponent/ngrok
Output:
ngrok - downloading binary https://bin.equinox.io/c/6raCnPaTf2c/ngrok-beta-linux-amd64.tgz ...
stream.js:74
      throw er; // Unhandled stream error in pipe.
      ^

Error: self signed certificate in certificate chain
    at Error (native)
    at TLSSocket.<anonymous> (_tls_wrap.js:1085:38)
    at emitNone (events.js:86:13)
    at TLSSocket.emit (events.js:185:7)
    at TLSSocket._finishInit (_tls_wrap.js:603:8)
    at TLSWrap.ssl.onhandshakedone (_tls_wrap.js:433:38)
info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command.
`yarnpkg add --dev --exact react-native-scripts` failed

I've also set these options these commands:
npm config set strict-ssl false
yarn config set ssl strict-ssl false

[aesopwolf]

I don't think this is a problem with your self-signed cert or ssl, the url simple isn't available.

https://bin.equinox.io/c/6raCnPaTf2c/ngrok-beta-linux-amd64.tgz and
http://bin.equinox.io/c/6raCnPaTf2c/ngrok-beta-linux-amd64.tgz simply don't resolve.

@dikaiosune can we bundle those tgz's in the app itself so it doesn't depend on downloading them from a 3rd party with flaky uptime?

@inconshreveable anyway you can get those binaries hosted on npm? Looks like Cloudflare is down which is probably causing this issue.

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[anp]

Definitely. There are a few things that need to happen. We need to make ngrok an optional dep in one of the underlying deps (xdl), since CRNA doesn't even make use of it, and for Expo's stuff we probably also need to provide npm-based distribution of the actual binary (although I haven't looked into the licensing consequences since ngrok 2 is closed source).

[thebetterjort]

The link is working, but the postinstall.js script is not. I still get the error above.

[thebetterjort]

the fixes still do not fix the SSL certificate error that I get.

yarn start v0.21.3
$ react-native-scripts start 
Starting packager...
Error starting packager: Error: Unable to perform cache refresh for /home/username/.cache/expo/versions.json: Error: self signed certificate in certificate chain
    at /xdl/src/tools/FsCache.js:101:15
    at throw (native)
    at step (/home/username/Documents/my-app/node_modules/xdl/build/tools/FsCache.js:32:191)
    at /home/username/Documents/my-app/node_modules/xdl/build/tools/FsCache.js:32:402
error Command failed with exit code 1.

[anp]

We don't have any plans to allow disabling TLS, but you can specify the HTTP_PROXY and HTTPS_PROXY environment variables.

We are planning to provide a cached version of these files by default in the near future, just needs to be implemented.

[thebetterjort]

export NODE_TLS_REJECT_UNAUTHORIZED=0

fixes the issue.