barbarum / serverless-websocket-chat

This is a fully-serverless real-time chat example using API Gateway, Lambda and DynamoDB. Messages from one client are broadcast to all other connected clients via WebSockets.

Serverless WebSocket chat example

This is a Serverless project which creates a websocket chat backend. It's quite basic, but supports some standard features including setting a nickname, multiple channels, and broadcasting messages to channel members. The coolest this is that this is entirely serverless and in Python!

Demo

Getting started

This can all be deployed with AWS SAM.

$ sam build
$ sam deploy --guided

The final output will be a wss endpoint which you can connect to:

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Outputs
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Key                 WebSocketURI
Description         The WSS Protocol URI to connect to
Value               wss://abcd123.execute-api.us-west-2.amazonaws.com/Prod

Use wscat to connect and test:

• Install wscat by just running yarn
• In two different terminals: ./node_modules/.bin/wscat -c wss://YOUR_WS_ENDPOING
• Now type a meesage and hit enter...you'll see messages from one window pop up into another.

Commands

• /name bz - Change your display name to bz
• /channel random - Change to the random channel. Default channel is general
• /help

Security

See CONTRIBUTING for more information.

License

This library is licensed under the MIT-0 License. See the LICENSE file.