net/url: no way to construct raw unqualified request URI starting with //

[DanielMorsing]

http://play.golang.org/p/67oKm8TFcm

When I pass the URL in the playground into the http transport, it will call .RequestURI() and do a GET http://foo/bar%2f, while what I actually wanted was GET //foo/bar%2f. It looks like there is no possible way to construct a URL that will query for //foo/bar%2f.

Not quite sure how to distinguish between the case of Opaque containing a qualified URI and an unqualified one starting with //. Does it make sense to look at the host part after the // and see if it matches what's in Host?

[rsc]

This was fixed in Go 1.5: there is now a way to construct this request URI. Don't use Opaque, use RawPath (or just ParseRequestURI). I will add some tests to make sure this keeps working.

http://play.golang.org/p/De3q6SYhE9

[gopherbot]

CL https://golang.org/cl/17386 mentions this issue.