[erlang-questions] reltool/rebar vs. ssl certificates

Tristan Sloughter <>
Wed Apr 10 05:25:08 CEST 2013


Are you sure both times, the release and running manually yourself, it is
using the same version of erts?

This is an error message a number of us have seen when trying to use code
that worked in R15 but now gives this error in R16.

Tristan


On Tue, Apr 9, 2013 at 3:16 PM, Felix Gallo <> wrote:

> I am seeing a (probably intentional) difference between the way that the
> ssl module resolves certificates when run by hand from a command line
> emulator, and the way that it resolves certificates when run via a
> rebar-generated start script.  I would like to understand the underlying
> mechanism and how to change its behavior.
>
> In particular, my OTP application, which uses httpc, ssl and public_key,
> when run from the reltool- and rebar-generated application start script,
> emits:
>
> =ERROR REPORT==== 9-Apr-2013::20:20:59 ===
> SSL: certify: ssl_handshake.erl:263:Fatal error: certificate unknown
>
> =ERROR REPORT==== 9-Apr-2013::20:20:59 ===
> Error in process <0.77.0> on node '' with
> exit value: {{badmatch,{error,{failed_connect,[{to_address,{"
> go.urbanairship.com",443}},{inet,[inet],{tls_alert,"certificate
> unknown"}}]}}},
>
> but when run via erl it works fine.
>
> I suspect/think/am trying to deduce that the rebar-generated start script
> is attempting to sandbox/clean-start the environment so that minimal system
> dependencies are injected, which would be a good general practice for
> things like rebar/reltool.  However, this app will only ever be installed
> on unix systems with properly installed certs in the normative openssl
> directories so I'd like to bypass that, or work around it with proper
> inclusions.
>
> Unfortunately the documentation is a little sparse in this area and it
> doesn't appear that my situation is super common.
>
> Thanks in advance for any clues / tips.
>
> F.
>
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