Does not appear to work at all

[mcfearsome]

The following code snippet does not produce any output, proxy behavior is working just fine, DoFunc just never gets called.

❯ go version
go version go1.16beta1 darwin/arm64

# p.server is created with goproxy.NewProxyHttpServer()
p.server.OnResponse().DoFunc(func(resp *http.Response, ctx *goproxy.ProxyCtx) *http.Response {
	log.Println("OnResponse")
	log.Println(resp.Request.Host)
	log.Printf("%+v\n", resp.Request)
	os.Exit(1)
	return resp
})

The following produces some output, but the proxy behavior breaks, as in I can't browse anymore:

	var handler goproxy.FuncHttpsHandler = func(host string, ctx *goproxy.ProxyCtx) (*goproxy.ConnectAction, string) {
		log.Println("HandleConnect")
		log.Printf("Host: %s\n", host)

		return goproxy.OkConnect, ""
	}
	p.server.OnRequest().HandleConnect(handler)

[iIIusi0n]

It doesn't support Https MITM 👍

[CoolSpring8]

By default only http traffic is handled by these OnRequest/OnResponse handlers, while https traffic will pass through untouched.
Depending on what you like to do on https connections, you might want something like AlwaysMitm or AlwaysReject.

So to explain why the snippets doesn't work:

• In the first snippet, the proxy server is not yet configured to act on a https connection (as described above). Therefore, when visiting a site with https, the handler function is never called; If you visit a site without https, the information is expected to be logged.

• In the second snippet, the var handler goproxy.FuncHttpsHandler you defined returns an empty string as the host, which is invalid for a CONNECT request, and that prevents the normal browsing.

(There are some examples available for reference in the examples directory and I would suggest checking out some of them.)

[JanneKiiskila]

Should this issue closed, if the answer suffices @mcfearsome ?