ssl_connect.ex

Elixir 1.0.2 Code:

iex(1)> :inets.start
:ok
iex(2)> :ssl.start
:ok
iex(3)> :ssl.connect("gateway.sandbox.push.apple.com", 2195, [{:mode, :binary}, {:certfile, "/path_to_cert.pem"}], 30000)
    {:error, {:options, {:socket_options, [mode: :binary]}}}

iex(5)> :ssl.connect("api.github.com", 443, [], 30000)
{:error, {:options, {:socket_options, []}}}
iex(7)> :ssl.connect("api.github.com", 443, [mode: :binary], 30000)
{:error, {:options, {:socket_options, [mode: :binary]}}}

Erlang 17.4 (same on 17.0 and 17.1)

1> application:start(crypto), application:start(asn1), application:start(public_key), application:start(ssl).
ok
2> ssl:connect("gateway.sandbox.push.apple.com", 2195, [{mode, binary}, {certfile, "/path_to_cert.pem"}], 30000).
{ok,{sslsocket,{gen_tcp,#Port<0.1215>,tls_connection,
                        undefined},
               <0.51.0>}}
3> ssl:connect("api.github.com", 443, [{mode,  binary}], 30000).
{ok,{sslsocket,{gen_tcp,#Port<0.903>,tls_connection,
                        undefined},
               <0.48.0>}}