From fa98cb681630a17a10bd3953b6f9c0776508e24f Mon Sep 17 00:00:00 2001
From: Daniel Larimer <dlarimer@gmail.com>
Date: Fri, 12 Jul 2013 01:21:53 -0400
Subject: [PATCH] adding std::hash to fc::ip::endpoint

---
 include/fc/network/ip.hpp | 11 +++++++++++
 src/network/ip.cpp        | 10 ++++++++++
 2 files changed, 21 insertions(+)

diff --git a/include/fc/network/ip.hpp b/include/fc/network/ip.hpp
index f21eb27..20c9509 100644
--- a/include/fc/network/ip.hpp
+++ b/include/fc/network/ip.hpp
@@ -1,5 +1,6 @@
 #pragma once
 #include <fc/string.hpp>
+#include <fc/crypto/sha1.hpp>
 
 namespace fc {
 
@@ -53,3 +54,13 @@ namespace fc {
   void to_variant( const ip::address& var,  variant& vo );
   void from_variant( const variant& var,  ip::address& vo );
 }
+namespace std
+{
+    template<typename T> struct hash;
+
+    template<>
+    struct hash<fc::ip::endpoint>
+    {
+       size_t operator()( const fc::ip::endpoint& e )const;
+    };
+}
diff --git a/src/network/ip.cpp b/src/network/ip.cpp
index 9a906bd..26c628a 100644
--- a/src/network/ip.cpp
+++ b/src/network/ip.cpp
@@ -75,3 +75,13 @@ namespace fc { namespace ip {
   }
 
 } 
+namespace std
+{
+    size_t hash<fc::ip::endpoint>::operator()( const fc::ip::endpoint& e )const
+    {
+        auto h = fc::sha1::hash( (char*)&e, sizeof(e) );
+        size_t s;
+        memcpy( (char*)&s, (char*)&h, sizeof(s) );
+        return s;
+    }
+}