Add HttpRequest::requestedUri.

sdk/lib/io/http.dart

Index: sdk/lib/io/http.dart
diff --git a/sdk/lib/io/http.dart b/sdk/lib/io/http.dart
index 859803740686bae66ca75c8b87e48fcfc650ba4a..2e70340cdf674c0e41d8f9b177384c35ec09b191 100644
--- a/sdk/lib/io/http.dart
+++ b/sdk/lib/io/http.dart
@@ -790,6 +790,14 @@ abstract class HttpRequest implements Stream<List<int>> {
   Uri get uri;
 
   /**
+   * The absolute URI for the request (read-only).

[Søren Gjesse, 2014/01/07 11:13:43]

I like the idea of having this, but we should be sure to make it work in most
settings.

The initial comment should start with something like this: "Reconstructs the URL
used by the client to make this request."

We should briefly explain how this reconstruction works, and that when reverse
proxies are used some configuration is required.

Also mention that in most cases the [uri] property should be used, and this is
mainly for making redirect responses.

Regarding the original protocol there is the 'X-Forwareded-Proto' header, see
http://stackoverflow.com/questions/13111080/what-is-a-full-specification-of-x....

Likewise the 'X-Forwarded-Host' is sometimes used for the original host.

Another option could be to wait with adding it to dart:io and instead add it as
a utility to the http_server package.

[Anders Johnsen, 2014/01/07 13:59:10]

Done.

+   *
+   * This provides access to the scheme, host, port,
+   * path, query string, and fragment identifier for the request.
+   */
+  Uri get absoluteUri;
+
+  /**
    * The request headers (read-only).
    */
   HttpHeaders get headers;