Deploy a Go HTTP server in your browser

on YouTube ↗24m

" summary

Shows that a Go HTTP handler can run inside a browser by compiling to WebAssembly and wiring it into a ServiceWorker: registers a JS callback from Go via syscall/js, converts JS Request to a net/http Request using http.Test NewRequest and copies bodies with copyBytesToGo/copyBytesToJS, uses ResponseRecorder to capture handler output and returns a JS Response Promise. Demo serves an image-captioning form and a JSON hello API; it works but is slower and cannot host long‑running state because ServiceWorker lifecycle kills the WASM.

AI-written summary · about

" chapters (16)

1. 0:00Intro
2. 2:21Build to WebAssembly
3. 3:48Respond from a Service Worker
4. 4:43Building a Go HTTP server
5. 6:33The plan
6. 7:38Adding is/wasm target server.go
7. 8:45Implementing wasmhttp.Serve()
8. 9:42Sending requests to Go sw.js
9. 10:39Promise for a Response
10. 11:58JS Request to Go Request
11. 14:21Calling the HTTP Handler
12. 15:59Go Response to JS Response
13. 16:28Resolve Response Promise
14. 16:43Sending back the Response sw.js
15. 19:10JSON hello example Click the gopher!
16. 21:00Catption example Click the gopher!

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