On 03/06/2013 10:47 AM, Michael Tuexen wrote:

...
> It fails because dtls1_do_write() contains the following check:
>
>    OPENSSL_assert(s->d1->mtu >= dtls1_min_mtu());  /* should have
> something reasonable now */
>
> which fails if s->d1->mtu is set to zero.
> Isn't this after the sending failed two times?
>
Yes, after the data was sent twice with no response...  I think this
occurred when the peer was hung and stopped responding, but packet loss
in the network could trigger it as well.

-- Gary
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