Like the error handling where it assumes you want to return HTML (remember that Tornado was first written to handle RSS feeds). You can override the error hand

Like the error handling where it assumes you want to return HTML (remember that Tornado was first written to handle RSS feeds). You can override the error handler and return whatever content type you want. Tornado was first written for an HTML site, not RSS feeds. FriendFeed supported an HTML UI before Atom and RSS feeds were added. really poor support for multiprocess mode The Tornado people do not recommend using multiprocess mode. They should just delete this code.