From e5bb90fdfa93b1865b09a8e4afcb7d854346595b Mon Sep 17 00:00:00 2001
From: Patrick Dehne <patrick@mysonicweb.de>
Date: Sun, 20 Oct 2013 00:36:13 +0200
Subject: [PATCH] Fix constness of Proxy

---
 beast/utility/PropertyStream.h        | 6 +++---
 beast/utility/impl/PropertyStream.cpp | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/beast/utility/PropertyStream.h b/beast/utility/PropertyStream.h
index a3effc707..287149971 100644
--- a/beast/utility/PropertyStream.h
+++ b/beast/utility/PropertyStream.h
@@ -110,11 +110,11 @@ private:
 class PropertyStream::Proxy
 {
 private:
-    Map* m_map;
+	Map const* m_map;
     std::string m_key;
 
 public:
-    Proxy (Map& map, std::string const& key);
+    Proxy (Map const& map, std::string const& key);
 
     template <typename Value>
     Proxy& operator= (Value value);
@@ -160,7 +160,7 @@ public:
         { return Proxy (*this, key); }
 
     template <typename Key>
-    Proxy operator[] (Key key)
+    Proxy operator[] (Key key) const
     {
         std::stringstream ss;
         ss << key;
diff --git a/beast/utility/impl/PropertyStream.cpp b/beast/utility/impl/PropertyStream.cpp
index 239ba4f67..7afab58f3 100644
--- a/beast/utility/impl/PropertyStream.cpp
+++ b/beast/utility/impl/PropertyStream.cpp
@@ -56,7 +56,7 @@ PropertyStream::Source& PropertyStream::Item::operator* () const
 //------------------------------------------------------------------------------
 
 PropertyStream::Proxy::Proxy (
-    Map& map, std::string const& key)
+    Map const& map, std::string const& key)
     : m_map (&map)
     , m_key (key)
 {