A Use Case for Websockets in Go

Johnny Estilles

GoManila Mondays

September 2019

Johnny Estilles

Regional Director of Engineering
Freelancer.com

johnny@freelancer.com

@JohnnyEstilles

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September 2019

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What are websockets?

• Real-time full duplex communication over TCP
• Standardized by IETF (RFC 6455)
• Uses TCP ports 80 and 443
• Uses URL schemes ws:// and wss://
• Very small overhead for text messages (frames)
• Common use cases:
  • games
  • social feeds
  • chat
  • collaborative apps
  • financial tickers

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What are websockets?

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https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API

The WebSocket API (WebSockets)

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https://github.com/gorilla/websocket

Gorilla WebSocket

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Use Case: Animating CG Graphics on OBS

Server Side Stack

• Go 1.13
• Gorilla Websocket
• Docker

Client Side Stack

• StencilJS
• RxJS

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Use Case: Animating CG Graphics on OBS

Let's review my code!

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Use Case: Animating CG Graphics on OBS

Demo time!

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Thank you!

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References

https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API

https://github.com/gorilla/websocket

https://www.websocket.org/

https://code.visualstudio.com/docs/remote/containers

https://godoc.org/golang.org/x/net/websocket

https://gowebexamples.com/websockets/