gnutls-log-level

gnutls-log-level is a variable defined in `C source code'.
Its value is

0

Documentation:
Logging level used by the GnuTLS functions.
Set this larger than 0 to get debug output in the *Messages* buffer.
1 is for important messages, 2 is for debug data, and higher numbers
are as per the GnuTLS logging conventions.