send X-I2P-DestHash

I2PTunnel.cpp

@@ -165,7 +165,7 @@ namespace client
 	I2PTunnelConnectionHTTP::I2PTunnelConnectionHTTP (I2PService * owner, std::shared_ptr<i2p::stream::Stream> stream,
 		std::shared_ptr<boost::asio::ip::tcp::socket> socket, 
 		const boost::asio::ip::tcp::endpoint& target, const std::string& host):
-		I2PTunnelConnection (owner, stream, socket, target), m_Host (host), m_HeaderSent (false)
+		I2PTunnelConnection (owner, stream, socket, target), m_Host (host), m_HeaderSent (false), m_From (stream->GetRemoteIdentity ())
 	{
 	}
 
@@ -193,6 +193,12 @@ namespace client
 				else
 					break;
 			}
+			// add X-I2P fields
+			if (m_From)
+			{
+				m_OutHeader << X_I2P_DEST_HASH << ": " << m_From->GetIdentHash ().ToBase64 () << "\r\n";
+			//	m_OutHeader << X_I2P_DEST_B64 << ": " << m_From->ToBase64 () << "\r\n";
+			}
 
 			if (endOfHeader)
 			{

I2PTunnel.h

@@ -19,7 +19,10 @@ namespace client
 	const size_t I2P_TUNNEL_CONNECTION_BUFFER_SIZE = 8192;
 	const int I2P_TUNNEL_CONNECTION_MAX_IDLE = 3600; // in seconds	
 	const int I2P_TUNNEL_DESTINATION_REQUEST_TIMEOUT = 10; // in seconds
-
+	// for HTTP tunnels		
+	const char X_I2P_DEST_HASH[] = "X-I2P-DestHash"; // hash  in base64
+	//const char X_I2P_DEST_B64[] = "X-I2P-DestB64"; // full address in base64
+	//const char X_I2P_DEST_B32[] = "X-I2P-DestB32"; // full address in base32
 
 	class I2PTunnelConnection: public I2PServiceHandler, public std::enable_shared_from_this<I2PTunnelConnection>
 	{
@@ -74,6 +77,7 @@ namespace client
 			std::string m_Host;
 			std::stringstream m_InHeader, m_OutHeader;
 			bool m_HeaderSent;
+			std::shared_ptr<const i2p::data::IdentityEx> m_From;
 	};
 
 	class I2PClientTunnel: public TCPIPAcceptor