Stores a session as a base64 string. Encrypts the session using the
* supplied key. Returns the length of the pickled session on success.
* Returns olm_error() on failure. If the pickle output buffer
* is smaller than olm_pickle_session_length() then
* olm_session_last_error() will be "OUTPUT_BUFFER_TOO_SMALL"
Stores a session as a base64 string. Encrypts the session using the * supplied key. Returns the length of the pickled session on success. * Returns olm_error() on failure. If the pickle output buffer * is smaller than olm_pickle_session_length() then * olm_session_last_error() will be "OUTPUT_BUFFER_TOO_SMALL"