separate thread for streaming

Garlic.cpp

@@ -392,7 +392,7 @@ namespace garlic
 					// later on we should let destination decide
 					I2NPHeader * header = (I2NPHeader *)buf;
 					if (header->typeID == eI2NPData)
-						i2p::stream::HandleDataMessage (&destination, buf + sizeof (I2NPHeader), be16toh (header->size));
+						i2p::stream::HandleDataMessage (destination, buf + sizeof (I2NPHeader), be16toh (header->size));
 					else
 						LogPrint ("Unexpected I2NP garlic message ", (int)header->typeID);
 					break;

Streaming.cpp

@@ -14,10 +14,11 @@ namespace i2p
 {
 namespace stream
 {
-	Stream::Stream (StreamingDestination * local, const i2p::data::LeaseSet& remote):
-		m_SendStreamID (0), m_SequenceNumber (0), m_LastReceivedSequenceNumber (0), 
-		m_IsOpen (false), m_LeaseSetUpdated (true), m_LocalDestination (local), 
-		m_RemoteLeaseSet (remote), m_OutboundTunnel (nullptr)
+	Stream::Stream (boost::asio::io_service& service, StreamingDestination * local, 
+		const i2p::data::LeaseSet& remote): m_Service (service), m_SendStreamID (0), 
+		m_SequenceNumber (0), m_LastReceivedSequenceNumber (0), m_IsOpen (false), 
+		m_LeaseSetUpdated (true), m_LocalDestination (local), m_RemoteLeaseSet (remote), 
+		m_OutboundTunnel (nullptr)
 	{
 		m_RecvStreamID = i2p::context.GetRandomNumberGenerator ().GenerateWord32 ();
 		UpdateCurrentRemoteLease ();
@@ -312,7 +313,6 @@ namespace stream
 			m_CurrentRemoteLease.endDate = 0;
 	}	
 		
-	StreamingDestination * sharedLocalDestination = nullptr;	
 
 	StreamingDestination::StreamingDestination (): m_LeaseSet (nullptr)
 	{		
@@ -354,9 +354,10 @@ namespace stream
 		}	
 	}	
 
-	Stream * StreamingDestination::CreateNewStream (const i2p::data::LeaseSet& remote)
+	Stream * StreamingDestination::CreateNewStream (boost::asio::io_service& service,
+		const i2p::data::LeaseSet& remote)
 	{
-		Stream * s = new Stream (this, remote);
+		Stream * s = new Stream (service, this, remote);
 		m_Streams[s->GetRecvStreamID ()] = s;
 		return s;
 	}	
@@ -435,32 +436,78 @@ namespace stream
 		CryptoPP::DSA::Signer signer (m_SigningPrivateKey);
 		signer.SignMessage (i2p::context.GetRandomNumberGenerator (), buf, len, signature);
 	}
+
+	StreamingDestinations destinations;	
+	void StreamingDestinations::Start ()
+	{
+		if (!m_SharedLocalDestination)
+			m_SharedLocalDestination = new StreamingDestination ();
+		
+		m_IsRunning = true;
+		m_Thread = new std::thread (std::bind (&StreamingDestinations::Run, this));
+	}
+		
+	void StreamingDestinations::Stop ()
+	{
+		delete m_SharedLocalDestination;
+		
+		m_IsRunning = false;
+		m_Service.stop ();
+		if (m_Thread)
+		{	
+			m_Thread->join (); 
+			delete m_Thread;
+			m_Thread = 0;
+		}	
+	}	
+		
+	void StreamingDestinations::Run ()
+	{
+		m_Service.run ();
+	}	
+
+	Stream * StreamingDestinations::CreateClientStream (const i2p::data::LeaseSet& remote)
+	{
+		if (!m_SharedLocalDestination) return nullptr;
+		return m_SharedLocalDestination->CreateNewStream (m_Service, remote);
+	}
+		
+	void StreamingDestinations::DeleteClientStream (Stream * stream)
+	{
+		if (m_SharedLocalDestination)
+			m_SharedLocalDestination->DeleteStream (stream);
+		else
+			delete stream;
+	}	
+		
+	void StreamingDestinations::HandleNextPacket (i2p::data::IdentHash destination, Packet * packet)
+	{
+		// TODO: we have onle one destination, might be more
+		if (m_SharedLocalDestination)
+			m_SharedLocalDestination->HandleNextPacket (packet);
+	}	
 		
 	Stream * CreateStream (const i2p::data::LeaseSet& remote)
 	{
-		if (!sharedLocalDestination)
-			sharedLocalDestination = new StreamingDestination ();
-		return sharedLocalDestination->CreateNewStream (remote);
+		return destinations.CreateClientStream (remote);
 	}
 		
 	void DeleteStream (Stream * stream)
 	{
-		if (sharedLocalDestination)
-			sharedLocalDestination->DeleteStream (stream);
+		destinations.DeleteClientStream (stream);
 	}	
 
 	void StartStreaming ()
 	{
-		if (!sharedLocalDestination)
-			sharedLocalDestination = new StreamingDestination ();
+		destinations.Start ();
 	}
 		
 	void StopStreaming ()
 	{
-		delete sharedLocalDestination;
+		destinations.Stop ();
 	}	
 		
-	void HandleDataMessage (i2p::data::IdentHash * destination, const uint8_t * buf, size_t len)
+	void HandleDataMessage (i2p::data::IdentHash destination, const uint8_t * buf, size_t len)
 	{
 		uint32_t length = be32toh (*(uint32_t *)buf);
 		buf += 4;
@@ -481,9 +528,7 @@ namespace stream
 			}	
 			decompressor.Get (uncompressed->buf, uncompressed->len);
 			// then forward to streaming engine
-			// TODO: we have onle one destination, might be more
-			if (sharedLocalDestination)
-				sharedLocalDestination->HandleNextPacket (uncompressed);
+			destinations.HandleNextPacket (destination, uncompressed);
 		}	
 		else
 			LogPrint ("Data: protocol ", buf[9], " is not supported");

Streaming.h

@@ -5,6 +5,8 @@
 #include <string>
 #include <map>
 #include <set>
+#include <thread>
+#include <boost/asio.hpp>
 #include <cryptopp/dsa.h>
 #include "I2PEndian.h"
 #include "Queue.h"
@@ -67,7 +69,7 @@ namespace stream
 	{	
 		public:
 
-			Stream (StreamingDestination * local, const i2p::data::LeaseSet& remote);
+			Stream (boost::asio::io_service& service, StreamingDestination * local, const i2p::data::LeaseSet& remote);
 			~Stream ();
 			uint32_t GetSendStreamID () const { return m_SendStreamID; };
 			uint32_t GetRecvStreamID () const { return m_RecvStreamID; };
@@ -95,6 +97,7 @@ namespace stream
 			
 		private:
 
+			boost::asio::io_service& m_Service;
 			uint32_t m_SendStreamID, m_RecvStreamID, m_SequenceNumber, m_LastReceivedSequenceNumber;
 			bool m_IsOpen, m_LeaseSetUpdated;
 			StreamingDestination * m_LocalDestination;
@@ -119,7 +122,7 @@ namespace stream
 			i2p::tunnel::TunnelPool * GetTunnelPool () const  { return m_Pool; };
 			void Sign (uint8_t * buf, int len, uint8_t * signature) const;			
 
-			Stream * CreateNewStream (const i2p::data::LeaseSet& remote);
+			Stream * CreateNewStream (boost::asio::io_service& service, const i2p::data::LeaseSet& remote);
 			void DeleteStream (Stream * stream);
 			void HandleNextPacket (Packet * packet);
 
@@ -142,13 +145,43 @@ namespace stream
 			CryptoPP::DSA::PrivateKey m_SigningPrivateKey;
 	};	
 
+	class StreamingDestinations
+	{
+		public:
+
+			StreamingDestinations (): m_IsRunning (false), m_Thread (nullptr), 
+				m_Work (m_Service), m_SharedLocalDestination (nullptr) {};
+			~StreamingDestinations () {};
+
+			void Start ();
+			void Stop ();
+
+			void HandleNextPacket (i2p::data::IdentHash destination, Packet * packet); 
+
+			Stream * CreateClientStream (const i2p::data::LeaseSet& remote);
+			void DeleteClientStream (Stream * stream);
+			
+		private:	
+
+			void Run ();
+			
+		private:
+
+			bool m_IsRunning;
+			std::thread * m_Thread;	
+			boost::asio::io_service m_Service;
+			boost::asio::io_service::work m_Work;
+
+			StreamingDestination * m_SharedLocalDestination;	
+	};	
+	
 	Stream * CreateStream (const i2p::data::LeaseSet& remote);
 	void DeleteStream (Stream * stream);
 	void StartStreaming ();
 	void StopStreaming ();
 	
 	// assuming data is I2CP message
-	void HandleDataMessage (i2p::data::IdentHash * destination, const uint8_t * buf, size_t len);
+	void HandleDataMessage (i2p::data::IdentHash destination, const uint8_t * buf, size_t len);
 	I2NPMessage * CreateDataMessage (Stream * s, uint8_t * payload, size_t len);
 }		
 }