SSL read error: Success when DTLS is on

Siyuan Ren netheril96 at
Fri Mar 31 14:35:39 PDT 2017

I kind of solved the problem by upgrading the OS to Ubuntu 16.04, and
then built against the newest version of all dependencies. It is also
odd that I must install almost every dependency, optional or not,
listed in readme or the VPN won't works. Still don't know where it
goes wrong. Probably some version mismatch in API.

On Thu, Mar 30, 2017 at 12:29 AM, Nikos Mavrogiannopoulos
<n.mavrogiannopoulos at> wrote:
> On Wed, 2017-03-29 at 16:52 +0800, Siyuan Ren wrote:
>> The server shows a useless log message
>> > disconnect user '166F57A07AAF' (909) from
>> > 2402:f000:5:7a01:510c:779b:671a:a363 with IP (reason:
>> > unspecified error, time:     1s)
>> Any recommendation on what tools I could use to debug the connection?
> One is use wireshark and check the TLS session from the "outside", and
> another is increase verbosity on both the server and the client. On the
> server you can do that with '-d', and go gradually from 4 to 9 until
> something interesting pops up.
> regards,
> Nikos

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