Core/Networking: Rewrite networking threading model

Each network thread has its own io_service - this means that all operations on a given socket except queueing packets run from a single thread, removing the need for locking
Sending packets now writes to a lockfree intermediate queue directly, encryption is applied in network thread if it was required at the time of sending the packet

1 files changed, 8 insertions, 0 deletions

diff --git a/src/server/bnetserver/Server/Session.h b/src/server/bnetserver/Server/Session.h
index 75c30096417..2443d694a80 100644
--- a/src/server/bnetserver/Server/Session.h
+++ b/src/server/bnetserver/Server/Session.h
@@ -23,6 +23,7 @@
 #include "Socket.h"
 #include "BigNumber.h"
 #include "Callback.h"
+#include "MPSCQueue.h"
 #include <memory>
 #include <boost/asio/ip/tcp.hpp>
 
@@ -174,6 +175,13 @@ namespace Battlenet
 
         std::queue<ModuleType> _modulesWaitingForData;
 
+        struct EncryptableBuffer
+        {
+            MessageBuffer Buffer;
+            bool Encrypt;
+        };
+
+        MPSCQueue<EncryptableBuffer> _bufferQueue;
         PacketCrypt _crypt;
         bool _authed;
         bool _subscribedToRealmListUpdates;