return 0 in verify_cb gives ssl3_get_client_certificate warning

[Marc Lehmann]

On Mon, Nov 14, 2011 at 07:10:06PM +0100, Tobias Nissen <tn at movb.de> wrote:
> using a custom verification callback with AnyEvent::MPRPC I get
> 
>   ssl3_get_client_certificate: no certificate returned

I get:

   Server got error: ssl3_get_client_certificate: no certificate returned at /opt/perl/lib/perl5/AnyEvent/Handle.pm line 616

and thats because printing that is what AnyEvent::MPRPC does by default in
its on_error handler.

However, this is a TLS error, and I am not sure it's recoverable (it's
definitely not recoverable in AnyEvent::Handle).

If with "only a warning" you mean "I don't want the error printed out",
then maybe you need to subclass the AnyEvent::MPRPC::Server class to
override on_error? I don't know how it works - you should probably refer
to its documentation or author to find out more, the subclass idea I got
from a cursory look over its source code.

Somewhat off-topic, last time I looked (for AnyEvent::MP),
Data::MessagePack or whatever is used causes random memory corruption,
which could also be an issue (probably that has been fixed though).

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