From 63a117bf9310a846581c5f392a792e6f63c620e2 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 31 Aug 2020 08:28:13 +0200
Subject: [PATCH] And another boost/C++11 fix

This fixes Undefined symbols:
"ArdourSurface::hash_value(ArdourSurface::NodeState const&)", referenced from:
  boost::hash<ArdourSurface::NodeState>::operator()(ArdourSurface::NodeState const&) constin client.cc.1.o
  boost::hash<ArdourSurface::NodeState>::operator()(ArdourSurface::NodeState const&) constin server.cc.1.o
---
 libs/surfaces/websockets/client.h | 6 +++---
 libs/surfaces/websockets/state.cc | 7 +++++++
 libs/surfaces/websockets/state.h  | 1 +
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/libs/surfaces/websockets/client.h b/libs/surfaces/websockets/client.h
index 92e0526f75..b49008a6b8 100644
--- a/libs/surfaces/websockets/client.h
+++ b/libs/surfaces/websockets/client.h
@@ -19,7 +19,7 @@
 #ifndef _ardour_surface_websockets_client_h_
 #define _ardour_surface_websockets_client_h_
 
-#include <boost/unordered_set.hpp>
+#include <set>
 #include <list>
 
 #include "message.h"
@@ -56,8 +56,8 @@ public:
 private:
 	Client _wsi;
 
-	typedef boost::unordered_set<NodeState> ClientState;
-	ClientState                             _state;
+	typedef std::set<NodeState> ClientState;
+	ClientState                 _state;
 
 	ClientOutputBuffer _output_buf;
 };
diff --git a/libs/surfaces/websockets/state.cc b/libs/surfaces/websockets/state.cc
index 5655f9af35..5651dc702f 100644
--- a/libs/surfaces/websockets/state.cc
+++ b/libs/surfaces/websockets/state.cc
@@ -115,6 +115,13 @@ NodeState::operator== (const NodeState& other) const
 	return node_addr_hash () == other.node_addr_hash ();
 }
 
+bool
+NodeState::operator< (const NodeState& other) const
+{
+	return node_addr_hash () < other.node_addr_hash ();
+}
+
+
 std::size_t
 hash_value (const NodeState& state)
 {
diff --git a/libs/surfaces/websockets/state.h b/libs/surfaces/websockets/state.h
index 0ffb1a4212..a7e9689f9f 100644
--- a/libs/surfaces/websockets/state.h
+++ b/libs/surfaces/websockets/state.h
@@ -76,6 +76,7 @@ public:
 	std::size_t node_addr_hash () const;
 
 	bool operator== (const NodeState& other) const;
+	bool operator< (const NodeState& other) const;
 
 private:
 	std::string   _node;