Storing bootstrapped connection info

[chelliwell]

I have a client app derived from the 'demo client', which I am using with bootstrapping. I'm trying to figure out if there is a way to 'hook' the response from the Bootstrap Server so that I can save the Server connection info to use on next reboot (i.e. instead of just re-bootstrap each time). Has anyone done this, and know where/how to grab the info?

[kFYatek]

"Hooking" the Bootstrap Information isn't directly possible, but persisting the Server and Security object contents may allow you to do what you need. See the relevant tutorial.

[chelliwell]

Thanks, I've been experimenting with the Persistence functions, and I can see how to tie this into one of the various avs_stream methods. I may need to implement my own, because I am writing to a region of Flash memory which needs a single 'commit'/'flush' at the end (i.e. it I can't do sequential writes such as on a file).
However I can't see whether the object persistence modules (e.g. server_persistence.c) ever call avs_stream_v_table_t.finish_method ...? (which I would need for doing my write of the accumulated object data to Flash). Or should I implement a 'close' in my custom stream handler? Not sure if I can - with my own reader/writer/etc - use either stream_simple_io or stream_outbuf, or need to write my own. In which case which of those two is the better starting point?

[dextero]

We assume that flushing is performed in close stream method, which - if implemented - is called when deleting the stream with avs_stream_cleanup. If you are implementing your own avs_stream, this is the way to go. finish_message, while semantically being a flush operation, is not called automatically on cleanup.

Alternatively, if you are using stream_simple_io, you may also perform the flush step explicitly after stream cleanup:

// setup whatever is necessary for writer() to function correctly:
// open a file, unlock flash etc

avs_stream_abstract_t *stream = avs_stream_simple_output_create(writer, context);

// call Anjay persistence methods
anjay_security_object_persist(anjay, stream);
// ...

avs_stream_cleanup(&stream);

// writer() will not be called any more, so if flush is required, do it here