separate thread for SSU server

SSU.cpp

@@ -992,8 +992,8 @@ namespace ssu
 		m_Server.Send (buf, msgSize, m_RemoteEndpoint);
 	}			
 
-	SSUServer::SSUServer (boost::asio::io_service& service, int port):
-		m_Endpoint (boost::asio::ip::udp::v4 (), port), m_Socket (service, m_Endpoint)
+	SSUServer::SSUServer (int port): m_Thread (nullptr), m_Work (m_Service),
+		m_Endpoint (boost::asio::ip::udp::v4 (), port), m_Socket (m_Service, m_Endpoint)
 	{
 		m_Socket.set_option (boost::asio::socket_base::receive_buffer_size (65535));
 		m_Socket.set_option (boost::asio::socket_base::send_buffer_size (65535));
@@ -1007,13 +1007,38 @@ namespace ssu
 
 	void SSUServer::Start ()
 	{
-		Receive ();
+		m_IsRunning = true;
+		m_Thread = new std::thread (std::bind (&SSUServer::Run, this));
+		m_Service.post (boost::bind (&SSUServer::Receive, this));  
 	}
 
 	void SSUServer::Stop ()
 	{
 		DeleteAllSessions ();
+		m_IsRunning = false;
+		m_Service.stop ();
 		m_Socket.close ();
+		if (m_Thread)
+		{	
+			m_Thread->join (); 
+			delete m_Thread;
+			m_Thread = 0;
+		}	
+	}
+
+	void SSUServer::Run () 
+	{ 
+		while (m_IsRunning)
+		{
+			try
+			{	
+				m_Service.run ();
+			}
+			catch (std::exception& ex)
+			{
+				LogPrint ("SSU server: ", ex.what ());
+			}	
+		}	
 	}
 		
 	void SSUServer::AddRelay (uint32_t tag, const boost::asio::ip::udp::endpoint& relay)

SSU.h

@@ -5,6 +5,7 @@
 #include <map>
 #include <list>
 #include <set>
+#include <thread>
 #include <boost/asio.hpp>
 #include <cryptopp/modes.h>
 #include <cryptopp/aes.h>
@@ -154,7 +155,7 @@ namespace ssu
 	{
 		public:
 
-			SSUServer (boost::asio::io_service& service, int port);
+			SSUServer (int port);
 			~SSUServer ();
 			void Start ();
 			void Stop ();
@@ -172,11 +173,16 @@ namespace ssu
 
 		private:
 
+			void Run ();
 			void Receive ();
 			void HandleReceivedFrom (const boost::system::error_code& ecode, std::size_t bytes_transferred);
 
 		private:
 
+			bool m_IsRunning;
+			std::thread * m_Thread;	
+			boost::asio::io_service m_Service;
+			boost::asio::io_service::work m_Work;
 			boost::asio::ip::udp::endpoint m_Endpoint;
 			boost::asio::ip::udp::socket m_Socket;
 			boost::asio::ip::udp::endpoint m_SenderEndpoint;

Transports.cpp

@@ -110,7 +110,7 @@ namespace i2p
 			{
 				if (!m_SSUServer)
 				{	
-					m_SSUServer = new i2p::ssu::SSUServer (m_Service, address.port);
+					m_SSUServer = new i2p::ssu::SSUServer (address.port);
 					LogPrint ("Start listening UDP port ", address.port);
 					m_SSUServer->Start ();	
 					DetectExternalIP ();