Created a common implementation for TLS session cache

There are too many similarities between GnuTLS session ID and the
session cache, so it is desirable to merge the implementations so
that it is easier to maintain and leads to more similar behaviours
across backends.

This commit moves the OpenSSL backend session cache implementation
to the base class as well as the session id calculation.

In GnuTLS the session id is also used to assert that the copy session
state is done properly (before handshake of the new class and after
handshake of the old class). That behaviour was maintained but the
session id is now computed when the base class is constructed.

Adds as well some operations that need to be abstracted in order for
the lifetime of the different objects in each backend to be
maintained properly.

Fixes #194

Part-of: <https://gitlab.gnome.org/GNOME/glib-networking/-/merge_requests/221>

1 files changed, 0 insertions, 4 deletions

diff --git a/tls/gnutls/gtlsbackend-gnutls.h b/tls/gnutls/gtlsbackend-gnutls.h
index fb33361..b05f863 100644
--- a/tls/gnutls/gtlsbackend-gnutls.h
+++ b/tls/gnutls/gtlsbackend-gnutls.h
@@ -35,8 +35,4 @@ G_DECLARE_FINAL_TYPE (GTlsBackendGnutls, g_tls_backend_gnutls, G, TLS_BACKEND_GN
 
 void  g_tls_backend_gnutls_register (GIOModule *module);
 
-void    g_tls_backend_gnutls_store_session_data  (GBytes *session_id,
-                                                  GBytes *session_data);
-GBytes *g_tls_backend_gnutls_lookup_session_data (GBytes *session_id);
-
 G_END_DECLS