On 19/05/2020 15:56, Claus Assmann wrote: > That's basically already in the code: > while ((l = ERR_get_error_line_data((const char **) &file, &line, > (const char **) &data, &flags)) != 0) > log it ... > but that does not generate any output. Even if I add > the line you suggested there's no extra output > (to make sure there would be something I also added > an BIO_fprintf() and that output is shown, so it's not > a problem with the BIO). > > I guess I have to figure out how to use wireshark for this. > I doubt wireshark will tell you much more than the SSL_trace output (although it is possible that it could). After you see this on the server side: SSL_accept:TLSv1.3 early data info_callback where=0x2002, ret=-1 SSL_accept:error in TLSv1.3 early data What happens in the application code? What was the function being called (SSL_accept?) and what return value do you get? What does SSL_get_error() return at this point? Matt
