prevent that the server uses close messages from clients. Closes #950

src/engine/shared/network.h

@@ -140,6 +140,7 @@ private:
 
 	int m_Token;
 	int m_RemoteClosed;
+	bool m_BlockCloseMsg;
 
 	TStaticRingBuffer<CNetChunkResend, NET_CONN_BUFFERSIZE> m_Buffer;
 
@@ -167,7 +168,7 @@ private:
 	void Resend();
 
 public:
-	void Init(NETSOCKET Socket);
+	void Init(NETSOCKET Socket, bool BlockCloseMsg);
 	int Connect(NETADDR *pAddr);
 	void Disconnect(const char *pReason);
 

src/engine/shared/network_client.cpp

@@ -16,7 +16,7 @@ bool CNetClient::Open(NETADDR BindAddr, int Flags)
 
 	// init
 	m_Socket = Socket;
-	m_Connection.Init(m_Socket);
+	m_Connection.Init(m_Socket, false);
 	return true;
 }
 

src/engine/shared/network_conn.cpp

@@ -37,12 +37,13 @@ void CNetConnection::SetError(const char *pString)
 	str_copy(m_ErrorString, pString, sizeof(m_ErrorString));
 }
 
-void CNetConnection::Init(NETSOCKET Socket)
+void CNetConnection::Init(NETSOCKET Socket, bool BlockCloseMsg)
 {
 	Reset();
 	ResetStats();
 
 	m_Socket = Socket;
+	m_BlockCloseMsg = BlockCloseMsg;
 	mem_zero(m_ErrorString, sizeof(m_ErrorString));
 }
 
@@ -213,6 +214,8 @@ int CNetConnection::Feed(CNetPacketConstruct *pPacket, NETADDR *pAddr)
 				m_State = NET_CONNSTATE_ERROR;
 				m_RemoteClosed = 1;
 
+				if(!m_BlockCloseMsg)
+				{
 					if(pPacket->m_DataSize)
 					{
 						// make sure to sanitize the error string form the other party
@@ -228,6 +231,7 @@ int CNetConnection::Feed(CNetPacketConstruct *pPacket, NETADDR *pAddr)
 					}
 					else
 						SetError("No reason given");
+				}
 
 				if(g_Config.m_Debug)
 					dbg_msg("conn", "closed reason='%s'", ErrorString());

src/engine/shared/network_server.cpp

@@ -30,7 +30,7 @@ bool CNetServer::Open(NETADDR BindAddr, CNetBan *pNetBan, int MaxClients, int Ma
 	m_MaxClientsPerIP = MaxClientsPerIP;
 
 	for(int i = 0; i < NET_MAX_CLIENTS; i++)
-		m_aSlots[i].m_Connection.Init(m_Socket);
+		m_aSlots[i].m_Connection.Init(m_Socket, true);
 
 	return true;
 }