🤗 How can I DO reverseproxy http(other server) to https(gofiber)?

[koreaidi0t]

Question description
How can DO reverseproxy?

package main

import (
	"crypto/tls"
	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/proxy"
)


func main() {
	cer, err := tls.LoadX509KeyPair("certs/fullchain.crt", "certs/privkey.pem")
	if err != nil {
		panic(err)
	}
	config := &tls.Config{Certificates: []tls.Certificate{cer}}

	app := fiber.New()
	g := app.Group("/test")
	{
		g.All("/*", func(c *fiber.Ctx) error {
			url := "http://192.168.10.144:80"+c.Path()
			err := proxy.Do(c, url)
			if err != nil{
				panic(err)
			}
			return nil
		})
	}
	ln, err := tls.Listen("tcp", ":443", config)
	if err != nil {
		panic(err)
	}
	app.Listener(ln)
}

When running this code, I got following error.
panic: tls: first record does not look like a TLS handshake

Thanks for reading.

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[ReneWerner87]

@koreaidi0t
have you tested the server and the tls configuration without the proxy middleware ? do you get the same error ?

[koreaidi0t]

@ReneWerner87

Yes. When I make target server https, it works sucessfully as I expect.

Thanks for comment!

[ReneWerner87]

ok, you(@koreaidi0t ) opened it again ?
anything else I can help ?

[koreaidi0t]

@ReneWerner87
My fingers slipped.😢

Yes there is still problem. I'd like to forward HTTP server via HTTPS gofiber server. I don't want the target server to use HTTPS.

Thanks for your effort!

[ReneWerner87]

https://github.com/gofiber/fiber/tree/master/middleware/proxy

have you tried this from the readme ?

[koreaidi0t]

@ReneWerner87

Yes. I tried, but it doesn't work.
In my case, the target server is http server, not using any certs, so that solution could not help. 😭

[bigflood]

My guess is that the proxy middleware is doing https to the http target.

[bigflood]

proxy.Do does not change the scheme from https to http.

fiber/middleware/proxy/proxy.go

Line 123 in 7b7dcf2

req.SetRequestURI(addr)

[koreaidi0t]

@bigflood
Thanks.
I found that if I change the scheme to 'http', it overwrited to 'https' due to isTls variable in req is set true.
What can I do?

[bigflood]

It doesn't seem possible.

[bigflood]

Maybe, you can implement your own version of proxy.Do.

[koreaidi0t]

@bigflood
It seems hard to change isTls var in req though. 😢

BTW thanks for your comments!

[bigflood]

@ReneWerner87
May I work on this issue?

[ReneWerner87]

Sure