From a44506d6130da7ab06c59a4e297773c64ea519d4 Mon Sep 17 00:00:00 2001
From: Charles Lohr <cnlohr@users.sourceforge.net>
Date: Wed, 30 Nov 2005 00:37:47 +0000
Subject: [PATCH] Support UDP discovery broadcast packets (so we can list
 servers)

---
 stepmania/src/NetworkSyncServer.cpp | 17 ++++++++++++++++-
 stepmania/src/NetworkSyncServer.h   |  2 ++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/stepmania/src/NetworkSyncServer.cpp b/stepmania/src/NetworkSyncServer.cpp
index 4b9bcb6324..436dd13094 100644
--- a/stepmania/src/NetworkSyncServer.cpp
+++ b/stepmania/src/NetworkSyncServer.cpp
@@ -47,6 +47,8 @@ bool StepManiaLanServer::ServerStart()
 		if (server.bind(8765))
 			if (server.listen())
 			{
+				broadcast.create( IPPROTO_UDP );
+				broadcast.connect( "255.255.255.255", 8765 );
 				stop = false;
 				statsTime = time(NULL);
 				return true;
@@ -84,6 +86,7 @@ void StepManiaLanServer::ServerUpdate()
 		UpdateClients();
 		if (time(NULL) > statsTime)
 		{
+			BroadcastInfo();
 			SendStatsToClients();
 			statsTime = time(NULL);
 		}
@@ -993,10 +996,22 @@ void StepManiaLanServer::CheckLowerJudge(const unsigned int clientNum)
 				Client[clientNum]->lowerJudge = true;
 		}
 }
+
+void StepManiaLanServer::BroadcastInfo()
+{
+	PacketFunctions Binfo;
+	Binfo.ClearPacket();
+	Binfo.WriteNT( servername );
+	Binfo.Write2( 8765 );
+	Binfo.Write2( Client.size() );
+	
+	broadcast.SendPack( (char*)&Binfo.Data, Binfo.Position );
+}
+
 #endif
 
 /*
- * (c) 2003-2004 Joshua Allen
+ * (c) 2003-2005 Joshua Allen, Charles Lohr
  * All rights reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
diff --git a/stepmania/src/NetworkSyncServer.h b/stepmania/src/NetworkSyncServer.h
index c3d6e618f4..af2acc6707 100644
--- a/stepmania/src/NetworkSyncServer.h
+++ b/stepmania/src/NetworkSyncServer.h
@@ -93,6 +93,7 @@ private:
 	PacketFunctions Reply;
 	vector<GameClient*> Client; 
 	EzSockets server;
+	EzSockets broadcast;
 	int ClientHost;
 	vector<LanPlayer*> playersPtr;
 	time_t statsTime;
@@ -136,6 +137,7 @@ private:
 	void Disconnect(const unsigned int clientNum);
 	void ClientsSongSelectStart();
 	void ResetLastSongInfo();
+	void BroadcastInfo();
 #endif
 };