SSL crash when pointed at a non SSL echo server

[csrl@REDACTED]

We have an issue report open that shows a crash on the same line in the code, but by different means to hit it.

tls_handshake_1_3.erl:652: :tls_handshake_1_3.do_start/2

https://github.com/erlang/otp/issues/5341

I assume if you were to test under OTP 22, you would not see this crash.


> Sent: Monday, November 08, 2021 at 12:18 PM
> From: "Ed W" <lists@REDACTED>
> To: erlang-questions@REDACTED
> Subject: SSL crash when pointed at a non SSL echo server
>
> Hi, in order to develop some simple apps I created a simple echo server that runs on two ports, one
> for SSL and another plain TCP. By accident I pointed the SSL application at the plain TCP port and
> found the following crash (please forgive the elixir syntax)
> 
> Obviously one shouldn't do this... However, perhaps someone would like to see if we can't catch it
> and return a nicer error?
> 
> (tested: Erlang 24.1.3)
> 
> Thanks
> 
> Ed W
> 
<snip>
>             (ssl 10.5.2) tls_handshake_1_3.erl:652: :tls_handshake_1_3.do_start/2
>             (ssl 10.5.2) tls_connection_1_3.erl:270: :tls_connection_1_3.start/3
>             (stdlib 3.16.1) gen_statem.erl:1194: :gen_statem.loop_state_callback/11
>             (ssl 10.5.2) tls_connection.erl:154: :tls_connection.init/1
>             (stdlib 3.16.1) proc_lib.erl:226: :proc_lib.init_p_do_apply/3
>     (stdlib 3.16.1) gen.erl:220: :gen.do_call/4
>     (stdlib 3.16.1) gen_statem.erl:684: :gen_statem.call_dirty/4
>     (ssl 10.5.2) ssl_gen_statem.erl:1185: :ssl_gen_statem.call/2
>     (ssl 10.5.2) ssl_gen_statem.erl:224: :ssl_gen_statem.handshake/2
>     (ssl 10.5.2) tls_gen_connection.erl:89: :tls_gen_connection.start_fsm/8
>     (ssl 10.5.2) ssl_gen_statem.erl:193: :ssl_gen_statem.connect/8
>     (ssl 10.5.2) ssl.erl:608: :ssl.connect/4
> 
> 
>