From 8c41271b3312f2a02608ffc41b220f7fb018d6ad Mon Sep 17 00:00:00 2001
From: UbitUmarov <ajlduarte@sapo.pt>
Date: Mon, 13 Oct 2014 13:17:48 +0100
Subject: [PATCH] *TEST* send udp sync. Stop uncontroled and hidden use of IO
 threads. Testing this may require several people.

---
 .../ClientStack/Linden/UDP/LLUDPServer.cs      |  3 ++-
 .../ClientStack/Linden/UDP/OpenSimUDPBase.cs   | 18 +++++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
index 99e7aba1d0..ac4a877aa6 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
@@ -1305,7 +1305,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             PacketsSentCount++;
 
             // Put the UDP payload on the wire
-            AsyncBeginSend(buffer);
+            //AsyncBeginSend(buffer);
+            SyncSend(buffer);
 
             // Keep track of when this packet was sent out (right now)
             outgoingPacket.TickCount = Environment.TickCount & Int32.MaxValue;
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/OpenSimUDPBase.cs b/OpenSim/Region/ClientStack/Linden/UDP/OpenSimUDPBase.cs
index 881e76876d..1d76c1414b 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/OpenSimUDPBase.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/OpenSimUDPBase.cs
@@ -375,12 +375,28 @@ namespace OpenMetaverse
 
                     // Synchronous mode waits until the packet callback completes
                     // before starting the receive to fetch another packet
-                    if (!m_asyncPacketHandling)
+//                    if (!m_asyncPacketHandling)
                         AsyncBeginReceive();
                 }
             }
         }
 
+        public void SyncSend(UDPPacketBuffer buf)
+        {
+            try
+            {
+                m_udpSocket.SendTo(
+                    buf.Data,
+                    0,
+                    buf.DataLength,
+                    SocketFlags.None,
+                    buf.RemoteEndPoint
+                    );
+            }
+            catch (SocketException) { }
+            catch (ObjectDisposedException) { }
+        }
+
         public void AsyncBeginSend(UDPPacketBuffer buf)
         {
 //            if (IsRunningOutbound)