Is the full, absolute URL of an HTTP request directly available?

[Peter Lacey]

I'm looking to access the full URL of an HTTP request.  When the following code is run with:

$ curl "http://localhost:8080/foo"

It prints out:

/foo
/foo

/*  **** Code ****
package main

import (
    "fmt"
    "net/http"
)

func someHandler(w http.ResponseWriter, r *http.Request) {
    fmt.Println(r.URL.String())
    fmt.Println(r.RequestURI)
}

func main() {
    http.HandleFunc("/", someHandler)
    http.ListenAndServe(":8080", nil)
}

Is the full URL tucked away any where?  If not, I'm curious what the reasoning might be?  Or is there a simple call to reassemble the full URL from the request?  url.URL.String() doesn't seem to do that, as I would have expected.

I've googled the heck out of this, but came up dry.

Thanks in advance,
Pete

[Peter Lacey]

Thanks, Islan.  That's what I figured.  I admit, though, it seems odd that this isn't more accessible.

-- Pete

On Friday, April 18, 2014 5:12:46 PM UTC-4, Islan Dberry wrote:

It is not directly available, but you can be able to assemble it:

u := r.URL

// The scheme is http because that's the only protocol your server handles.

u.Scheme = "http" 

// If client specified a host header, then use it for the full URL.

u.Host = r.Host   

// Otherwise, use your server's host name. 

if u.Host == "" {

   u.Host = "your-host-name.com"

[Alex Zorin]

To expand on that, not all parts of the URL are available to the server. For example, :8080 in your example is interpreted by the HTTP client and not sent to the server in the request. So to reassemble it, you would need foreknowledge that the server runs on port 8080.

[Brad Fitzpatrick]

It's not more accessible because it's not always there on the wire in the HTTP protocol.

And when proxies are involved, the URL the user sees in their browser (which might be more similar to where you want to redirect them) might not anything resemble what Go sees (might be a different scheme, host, and port).

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[Peter Lacey]

Thanks Alex and Brad,

That additional info help clarify things quite a bit.

BTW, this is a very helpful mailing list.  So thanks for that too.  Once I've internalized Go some more, I hope to contribute answers and not just questions.

-- Pete