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acme-proxy

THE BEER-WARE LICENSE

Bandgren wrote this file. As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return.

License originally authored by Poul-Henning Kamp (phk).

Build and Run acme-proxy

 go build && ./acme-proxy -p 8080

Test it out

The /test endpoint proxies the request towards https://postman-echo.com/headers

curl http://localhost:8080/test

And you will get the following JSON response

{
    "headers":
        {
            "x-forwarded-proto":"https",
            "x-forwarded-port":"443",
            "host":"localhost",
            "x-amzn-trace-id":"Root=1-5f5f2cdc-6077a6677943234e21c89ea2",
            "user-agent":"curl/7.72.0",
            "accept":"*/*",
            "x-forwarded-host":"",
            "x-origin-host":"postman-echo.com",
            "key":"super-secret-key",
            "accept-encoding":"gzip"
        }
}

Run tests

go test ./...

Example output

?       acme-proxy      [no test files]
?       acme-proxy/internal/config      [no test files]
ok      acme-proxy/internal/proxy       2.498s

Run benchmark

go test ./... -bench=.

Example output

goos: linux
goarch: amd64
pkg: acme-proxy/internal/proxy
BenchmarkProxy-8   	      69	  16696905 ns/op

Things to think about:

  • How to protect the key?
    • Depending on the domain, if running inside kubernetes, as a kube secret, otherwise a HMAC or OAuth solution.
  • Limitations
    • Currently, only supports one endpoint to proxy match.
    • Dose not support trailer, stream or HTTP/2