bug#25061: consider adding %COMPAT to default gnutls priority string

[Ted Zlatanov]

On Thu, 01 Dec 2016 21:25:29 +0100 ludo@gnu.org (Ludovic Courtès) wrote: 

LC> Ted Zlatanov <tzz@lifelogs.com> skribis:

>> We could break down %COMPAT to all its components and find which ones
>> are causing the issue.

LC> %DUMBFW may be that option (info "(gnutls) Priority Strings"):

LC> will add a private extension with bogus data that make the
LC> client hello exceed 512 bytes. This avoids a black hole
LC> behavior in some firewalls. This is the [_rfc7685_] client
LC> hello padding extension, also enabled with %COMPAT.

Nice. Could you or Andy verify if it resolves the originally reported
problem? I think it's very reasonable to add it to the default, if it does.

Thanks
Ted