Tornado Demo Apps

This directory contains several example apps that illustrate the usage of various Tornado features. If you're not sure where to start, try the chat, blog, or websocket demos.

Note

These applications require features due to be introduced in Tornado 6.3 which is not yet released. Unless you are testing the new release, use the GitHub branch selector to access the stable branch (or the branchX.y branch corresponding to the version of Tornado you are using) to get a suitable version of the demos.

TODO: remove this when 6.3 ships.

Web Applications

• blog: A simple database-backed blogging platform, including HTML templates and authentication.
• chat: A chat room demonstrating live updates via long polling.
• websocket: Similar to chat but with WebSockets instead of long polling.
• helloworld: The simplest possible Tornado web page.
• s3server: Implements a basic subset of the Amazon S3 API.

Feature demos

• facebook: Authentication with the Facebook Graph API.
• file_upload: Client and server support for streaming HTTP request payloads.
• tcpecho: Using the lower-level IOStream interfaces for non-HTTP networking.
• webspider: Concurrent usage of AsyncHTTPClient, using queues and semaphores.