Support X-Forwarded-Port.

glide.lock

@@ -1,5 +1,5 @@
-hash: b056b388f961ddc3509b19b4546d8dfc70fd50ebd1ca47f2fd2de67bf49ba01e
-updated: 2017-08-12T14:15:06.346751095+02:00
+hash: b970da88f72aebed9ac07a31db3f40045de0cd63190a2aae8ce18b55ec3f434a
+updated: 2017-08-21T14:15:06.346751095+02:00
 imports:
 - name: cloud.google.com/go
   version: 2e6a95edb1071d750f6d7db777bf66cd2997af6c
@@ -477,7 +477,7 @@ imports:
 - name: github.com/urfave/negroni
   version: 490e6a555d47ca891a89a150d0c1ef3922dfffe9
 - name: github.com/vulcand/oxy
-  version: d40fb60c9a1620892a6fc146dcdc891fb02bd488
+  version: 3772a8e4408fb033d00a947d340475e116854b1a
   repo: https://github.com/containous/oxy.git
   vcs: git
   subpackages:

glide.yaml

@@ -12,7 +12,7 @@ import:
 - package: github.com/cenk/backoff
 - package: github.com/containous/flaeg
 - package: github.com/vulcand/oxy
-  version: d40fb60c9a1620892a6fc146dcdc891fb02bd488
+  version: 3772a8e4408fb033d00a947d340475e116854b1a
   repo: https://github.com/containous/oxy.git
   vcs: git
   subpackages:

vendor/github.com/vulcand/oxy/forward/headers.go

@@ -4,6 +4,7 @@ const (
 	XForwardedProto        = "X-Forwarded-Proto"
 	XForwardedFor          = "X-Forwarded-For"
 	XForwardedHost         = "X-Forwarded-Host"
+	XForwardedPort         = "X-Forwarded-Port"
 	XForwardedServer       = "X-Forwarded-Server"
 	Connection             = "Connection"
 	KeepAlive              = "Keep-Alive"

vendor/github.com/vulcand/oxy/forward/rewrite.go

@@ -32,6 +32,12 @@ func (rw *HeaderRewriter) Rewrite(req *http.Request) {
 		req.Header.Set(XForwardedProto, "http")
 	}
 
+	if xfp := req.Header.Get(XForwardedPort); xfp != "" && rw.TrustForwardHeader {
+		req.Header.Set(XForwardedPort, xfp)
+	} else if req.URL.Port() != "" {
+		req.Header.Set(XForwardedPort, req.URL.Port())
+	}
+
 	if xfh := req.Header.Get(XForwardedHost); xfh != "" && rw.TrustForwardHeader {
 		req.Header.Set(XForwardedHost, xfh)
 	} else if req.Host != "" {