Error making API call.

Attempting to save a node hangs and Alchemy throws exception 'Error making API call.' on attempting to save a node which is using Alchemy through Autotagging.

My DNS is currently down, so I think this is related to http timeout.

Ideally it should be timing out properly, and produce a sensible error message for Autotagging to establish that the alchemy link failed? At the moment, it makes users unable to edit/save posts.

Possibly this is related to #156582: drupal_http_request() should support timeout setting if we are using drupal_http_request, and since it looks like a parameter will be added to timeout, we should be adding a short one (5 seconds?).