tls_alert internal error

[teamon]

I went to update ibrowse from 4.2 to 4.4 and got this difference in behaviour:

ibrowse 4.2.2

iex(1)> :ibrowse.send_req('https://httpbin.org/uuid', [], :get)
{:ok, '200', ...}

ibrowse 4.4.0

iex(1)> :ibrowse.send_req('https://httpbin.org/uuid', [], :get)
{:error, {:conn_failed, {:error, {:tls_alert, 'internal error'}}}}
2018-01-31 21:05:49.194 [info] ['TLS', 32, 'client', 58, 32, 73, 110, 32, 115, 116, 97, 116, 101, 32, 'hello', 32, 'received SERVER ALERT: Fatal - Internal Error', 10]

Requests for other URL work fine like e.g. 'https://google.com' work fine on both versions.

What has changed between 4.2 and 4.4 in terms of ssl handling?

```bash λ elixir --version Erlang/OTP 20 [erts-9.2] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:10] [hipe] [kernel-poll:false]

Elixir 1.6.0 (compiled with OTP 20)

</details>

[tazjin]

I ran into this in the context of the issue linked above (hex2nix failing with the same error you posted when connecting to hex.pm).

Using git bisect and this script it seems that the commit that introduced the error is 216f84cf92caebdaa3efc6dfaa8c65766f66e8db.

It's late here and I'll have to continue investigating this tomorrow evening :)

[tazjin]

Opened #163 with a fix for this. There are some test failures on my local machine which I haven't quite figured out, but I'm really overdue for some sleep and it'll have to wait if it fails in CI, too.