From c558deef274d838aae5c0366ff7dc2ebce27a981 Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Thu, 20 Sep 2012 09:41:28 -0400
Subject: [PATCH] Support X-Forwarded-Context for subdomain proxy configs (issue 135)

---
 src/com/gitblit/utils/HttpUtils.java |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)

diff --git a/src/com/gitblit/utils/HttpUtils.java b/src/com/gitblit/utils/HttpUtils.java
index 3903f8c..ad7d58c 100644
--- a/src/com/gitblit/utils/HttpUtils.java
+++ b/src/com/gitblit/utils/HttpUtils.java
@@ -67,6 +67,20 @@
         	}
         }
         
+        String context = request.getContextPath();
+        String forwardedContext = request.getHeader("X-Forwarded-Context");
+        if (forwardedContext != null) {
+        	forwardedContext = request.getHeader("X_Forwarded_Context");
+        }
+        if (!StringUtils.isEmpty(forwardedContext)) {
+        	context = forwardedContext;
+        }
+        
+        // trim any trailing slash
+        if (context.length() > 0 && context.charAt(context.length() - 1) == '/') {
+        	context = context.substring(1);
+        }
+        
 		StringBuilder sb = new StringBuilder();
 		sb.append(scheme);
 		sb.append("://");
@@ -75,7 +89,7 @@
 				|| ("https".equals(scheme) && port != 443)) {
 			sb.append(":" + port);
 		}
-		sb.append(request.getContextPath());
+		sb.append(context);
 		return sb.toString();
 	}
 }

--
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