From eff195aaa9bef1226999591e3b6501d3277dd4d7 Mon Sep 17 00:00:00 2001
From: Scott Battaglia <scott.battaglia@gmail.com>
Date: Sun, 22 Apr 2012 23:38:22 -0400
Subject: [PATCH] CASC-171

check x-forwarded host header
---
 .../java/org/jasig/cas/client/util/CommonUtils.java    | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/util/CommonUtils.java b/cas-client-core/src/main/java/org/jasig/cas/client/util/CommonUtils.java
index c1fc116..733393f 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/util/CommonUtils.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/util/CommonUtils.java
@@ -214,7 +214,15 @@ public final class CommonUtils {
             return serverName;
         }
 
-        final String comparisonHost = request.getHeader("Host");
+        final String host = request.getHeader("Host");
+        final String xHost = request.getHeader("X-Forwarded-Host");
+        
+        final String comparisonHost;
+        if (xHost != null && host == "localhost") {
+        	comparisonHost = xHost;
+        } else {
+        	comparisonHost = host;
+        }
 
         if (comparisonHost == null) {
             return serverName;