Twitch HLS Cache Docker Container
This no-longer works. Twitch now uses HTTPS for HLS streaming
This docker container acts a caching proxy server for HLS video streams from Twitch TV. For any network where multiple people are watching the same Twitch stream, this will result in saved bandwidth.
The primary use case is at LAN parties with hundreds of users. Many of these gamers will want to watch streams, especially if a large esports event is happening at the same time. The ability to replace 20+ 3mbps streams with a single stream will reduce the strain on the Internet connection greatly.
You will need to have a DNS server forwarding queries to the machine your docker container is running on. You can use the steamcache-dns docker image to do this or you can use a DNS service already on your network see the steamcache-dns github page for more information.
Run the steamcache container with the using the following to allow TCP port 80 (HTTP) through the host machine:
docker run --name twitch -p 192.168.0.6:80:80 steamcache/twitch:latest
For a Twitch HLS cache to function on your network you need two services.
The twitch cache transparently intercepts the Twitch traffic. If the stream is already being viewed, it will serve up the cached stream data that is already being fetched. If it's not being streamed, then it will start streaming and caching it.
The special DNS service handles DNS queries normally (recursively), except when they're about Twitch and in that case it responds that the twitch cache should handle it instead.
Note: steamcache-dns does not currently support Twitch. It will be updated shortly.
If you are running your own DNS servers, you will need to add the following DNS zones and records to your server in order to intercept the Twitch HLS streams.
The hard disk capacity required is minimal as the content is very time-specific. A small 2GB cache on a small SSD would be more than enough for caching multiple Twitch streams.
Each stream consumed will require up to 3.5mbps of bandwidth, so on a gigabit network you could serve up streams to approximately 280 people before you'd start hitting bottlenecks.
Running on Startup
Follow the instructions in the Docker documentation to run the container at startup.
This docker container is based on the original nginx config included in ansible-lanparty.
The MIT License (MIT)
Copyright (c) 2016 Jessica Smith, Robin Lewis, Brian Wojtczak, Jason Rivers
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