set correct 4 and 6 caps for unreachable addresses

libi2pd/RouterContext.cpp

@@ -92,7 +92,7 @@ namespace i2p
 				if (!ntcp2proxy.empty ()) ntcp2Published = false;
 			}	
 		}	
-		uint8_t caps = 0;
+		uint8_t caps = 0, addressCaps = 0;
 		if (ipv4)
 		{
 			std::string host = "127.0.0.1";
@@ -109,8 +109,11 @@ namespace i2p
 				if (ntcp2Published)
 					routerInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv, boost::asio::ip::address_v4::from_string (host), port);
 				else // add non-published NTCP2 address
+				{
+					addressCaps = i2p::data::RouterInfo::AddressCaps::eV4;
 					routerInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv); 
 				}		
+			}	
 			if (ssu)
 			{	
 				routerInfo.AddSSUAddress (host.c_str(), port, nullptr);
@@ -138,8 +141,12 @@ namespace i2p
 						ntcp2Host = host;
 					routerInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv, boost::asio::ip::address_v6::from_string (ntcp2Host), port);
 				}
-				else if (!ipv4) // no other ntcp2 addresses yet
+				else 
+				{	
+					if (!ipv4) // no other ntcp2 addresses yet
 						routerInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv);
+					addressCaps |= i2p::data::RouterInfo::AddressCaps::eV6;
+				}	
 			}	
 			if (ssu)
 			{	
@@ -154,6 +161,8 @@ namespace i2p
 				routerInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv, yggaddr, port);
 		}	
 
+		if (addressCaps)
+			routerInfo.SetUnreachableAddressesTransportCaps (addressCaps);
 		routerInfo.SetCaps (caps); // caps + L 
 		routerInfo.SetProperty ("netId", std::to_string (m_NetID));
 		routerInfo.SetProperty ("router.version", I2P_VERSION);
@@ -494,7 +503,6 @@ namespace i2p
 	{
 		if (supportsV6)
 		{
-			m_RouterInfo.EnableV6 ();
 			// insert v6 addresses if necessary
 			bool foundSSU = false, foundNTCP2 = false;
 			uint16_t port = 0;
@@ -538,6 +546,7 @@ namespace i2p
 					m_RouterInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv, boost::asio::ip::address::from_string (ntcp2Host), ntcp2Port);
 				}
 			}
+			m_RouterInfo.EnableV6 ();
 		}
 		else
 			m_RouterInfo.DisableV6 ();

libi2pd/RouterInfo.cpp

@@ -546,10 +546,14 @@ namespace data
 				WriteString ("caps", properties);
 				properties << '=';
 				std::string caps;	
+				if (address.IsPeerTesting ()) caps += CAPS_FLAG_SSU_TESTING;
 				if (address.host.is_v4 ())
 				{	
 					if (IsReachable ())
+					{	
 						isPublished = true;
+						if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU_INTRODUCER;
+					}	
 					else
 						caps += CAPS_FLAG_V4;
 				}
@@ -561,8 +565,6 @@ namespace data
 					if (address.caps & AddressCaps::eV6) caps += CAPS_FLAG_V6;
 					if (caps.empty ()) caps += CAPS_FLAG_V4;
 				}	
-				if (address.IsPeerTesting ()) caps += CAPS_FLAG_SSU_TESTING;
-				if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU_INTRODUCER;
 				WriteString (caps, properties);
 				properties << ';';
 			}
@@ -799,9 +801,6 @@ namespace data
 			if (*it == *addr) return;
 		m_SupportedTransports |= addr->host.is_v6 () ? eSSUV6 : eSSUV4;
 		m_Addresses->push_back(std::move(addr));
-
-		m_Caps |= eSSUTesting;
-		m_Caps |= eSSUIntroducer;
 	}
 
 	void RouterInfo::AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv, const boost::asio::ip::address& host, int port)
@@ -927,13 +926,23 @@ namespace data
 	void RouterInfo::EnableV6 ()
 	{
 		if (!IsV6 ())
+		{	
 			m_SupportedTransports |= eSSUV6 | eNTCP2V6;
+			uint8_t addressCaps = AddressCaps::eV6;
+			if (IsV4 ()) addressCaps |= AddressCaps::eV4;
+			SetUnreachableAddressesTransportCaps (addressCaps);
+		}	
 	}
 
 	void RouterInfo::EnableV4 ()
 	{
 		if (!IsV4 ())
+		{	
 			m_SupportedTransports |= eSSUV4 | eNTCP2V4;
+			uint8_t addressCaps = AddressCaps::eV4;
+			if (IsV6 ()) addressCaps |= AddressCaps::eV6;
+			SetUnreachableAddressesTransportCaps (addressCaps);
+		}	
 	}
 
 
@@ -945,6 +954,7 @@ namespace data
 			for (auto it = m_Addresses->begin (); it != m_Addresses->end ();)
 			{
 				auto addr = *it;
+				addr->caps &= ~AddressCaps::eV6;
 				if (addr->host.is_v6 ())
 					it = m_Addresses->erase (it);
 				else
@@ -961,6 +971,7 @@ namespace data
 			for (auto it = m_Addresses->begin (); it != m_Addresses->end ();)
 			{
 				auto addr = *it;
+				addr->caps &= ~AddressCaps::eV4;
 				if (addr->host.is_v4 ())
 					it = m_Addresses->erase (it);
 				else
@@ -1126,5 +1137,18 @@ namespace data
 				return false;
 			});
 	}	
+
+	void RouterInfo::SetUnreachableAddressesTransportCaps (uint8_t transports)
+	{
+		for (auto& addr: *m_Addresses)
+		{
+			// TODO: implement SSU
+			if (addr->transportStyle == eTransportNTCP && (!addr->IsPublishedNTCP2 () || addr->port))
+			{
+				addr->caps &= ~(eV4 | eV6);
+				addr->caps |= transports;
+			}
+		}
+	}
 }
 }

libi2pd/RouterInfo.h

@@ -182,6 +182,7 @@ namespace data
 			void DeleteProperty (const std::string& key); // called from RouterContext only
 			std::string GetProperty (const std::string& key) const; // called from RouterContext only
 			void ClearProperties () { m_Properties.clear (); };
+			void SetUnreachableAddressesTransportCaps (uint8_t transports); // bitmask of AddressCaps
 			bool IsFloodfill () const { return m_Caps & Caps::eFloodfill; };
 			bool IsReachable () const { return m_Caps & Caps::eReachable; };
 			bool IsSSU (bool v4only = true) const;