invokeRequestCertificate
Invoke the interaction to ask the user to choose a certificate to use with the connection. It invokes this interaction in the main loop, specifically the #GMainContext returned by g_main_context_get_thread_default() when the interaction is created. This is called by called by #GTlsConnection when the peer requests a certificate during the handshake.
Derived subclasses usually implement a certificate selector, although they may also choose to provide a certificate from elsewhere. Alternatively the user may abort this certificate request, which may or may not abort the TLS connection.
The implementation can either be a synchronous (eg: modal dialog) or an asynchronous one (eg: modeless dialog). This function will take care of calling which ever one correctly.
If the interaction is cancelled by the cancellation object, or by the user then %G_TLS_INTERACTION_FAILED will be returned with an error that contains a %G_IO_ERROR_CANCELLED error code. Certain implementations may not support immediate cancellation.
Return
The status of the certificate request interaction.
Since
2.40
Parameters
a #GTlsConnection object
flags providing more information about the request
an optional #GCancellable cancellation object