npm gets stuck on fetchMetadata -> network

I had a similar issue to @giridhar but it wasn't related to the proxy, just that my ssh key wasn't setup properly.
When trying to do a git ls-remote from an ssh:// url. I was getting the prompt to enter my passphrase for my ssh key.

I had to run these commands on command line in order to stop getting asked for my pass phrase:

$ eval `ssh-agent -s`
$ ssh-add ~/.ssh/id_rsa

Once you enter your pass phrase, then you don't have to enter it again anymore.

I highly recommend reading this wiki from Atlassian if you need to setup an ssh key:

[To see links please register here]

Did you configured a **proxy**? See if this returns something:

```
npm config get https-proxy
npm config get proxy
```

If you have values configured there, they might not match correct ones. If you shouldn't be using a proxy, you can delete them:

```
npm config delete https-proxy
npm config delete proxy
```

Docs:

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