Stock app fails to refresh after drop down is updated.

Changing the dropdown selectors does not update the graphs.

Not sure if related, but I see the following errors when the page is requested:

2014-09-29 09:57:15,560:ERROR:root:model not found for {u'type': u'StockApp', u'id': u'01bf4556-eae1-4f9d-86ed-65ec5659fe14'}
2014-09-29 09:57:15,560:ERROR:root:model not found for {u'type': u'StockApp', u'id': u'0bf3179c-2ddf-43c7-83c7-14417278befb'}
2014-09-29 09:57:15,560:ERROR:root:model not found for {u'type': u'StockApp', u'id': u'49c41860-8168-4eee-8117-daf62330461e'}
2014-09-29 09:57:15,560:ERROR:root:model not found for {u'type': u'StockApp', u'id': u'abcc9b83-b12f-4a7e-988b-5bd211fe88ad'}
2014-09-29 09:57:15,560:ERROR:root:model not found for {u'type': u'StockApp', u'id': u'd7e67962-d325-4edb-a6d6-38e6ae5818a3'}
2014-09-29 09:57:15,560:ERROR:root:model not found for {u'type': u'StockApp', u'id': u'a24f849e-02fd-4b9e-913d-e45accf6ab7b'}

[birdsarah]

I believe this is fixed. Success locally (on ubuntu) and also see docs version: http://bokeh.pydata.org/en/latest/docs/server_gallery/stocks_server.html

[chocolatechipcookie]

Unfortunately, I’ve not had time to continue working with Bokeh, so I haven’t been able to try more recent versions.

I’m running Windows XP, so this issue may not be a problem for other devs on more up-to-date systems. Differences in network stack behaviour when writing to a socket in tornado BaseIOStream._handle_write() may account for this. Otherwise, the platform dependent subclass of tornado IOLoop that is instantiated could make a difference. I notice that tornado stable is still at version 4.0.2, so I think that any fix is likely to be down to changes in Bokeh or to the platform.

The IOLoop.add_callback() workaround was just based on guesswork from some internet research. I’m not convinced it is the correct or intended way for a non IOLoop thread to write to the web socket. Also, I forgot to note in my original post that substituting ioloop.IOLoop.instance().add_callback(socket.write_message, topic + ":" + msg) omits exception handling for exceptions raised in socket.write_message. I’m not familiar enough with Bokeh or tornado to determine how errors should be handled in an IOLoop callback.

Finally, thanks for all your hard work to develop Bokeh. It is an impressive, useful and exciting product that I’m very happy to have had the chance to use, and hopefully will be able to revisit when I have the time.