select different routers for peer test

libi2pd/NetDb.cpp

@@ -1149,12 +1149,13 @@ namespace data
 			});
 	}
 
-	std::shared_ptr<const RouterInfo> NetDb::GetRandomPeerTestRouter (bool v4) const
+	std::shared_ptr<const RouterInfo> NetDb::GetRandomPeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const
 	{
 		return GetRandomRouter (
-			[v4](std::shared_ptr<const RouterInfo> router)->bool
+			[v4, &excluded](std::shared_ptr<const RouterInfo> router)->bool
 			{
-				return !router->IsHidden () && router->IsPeerTesting (v4);
+				return !router->IsHidden () && router->IsPeerTesting (v4) &&
+					!excluded.count (router->GetIdentHash ());
 			});
 	}
 

libi2pd/NetDb.hpp

@@ -85,7 +85,7 @@ namespace data
 			std::shared_ptr<const RouterInfo> GetRandomRouter () const;
 			std::shared_ptr<const RouterInfo> GetRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
 			std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
-			std::shared_ptr<const RouterInfo> GetRandomPeerTestRouter (bool v4) const;
+			std::shared_ptr<const RouterInfo> GetRandomPeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const;
 			std::shared_ptr<const RouterInfo> GetRandomSSUV6Router () const; // TODO: change to v6 peer test later
 			std::shared_ptr<const RouterInfo> GetRandomIntroducer () const;
 			std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;

libi2pd/Transports.cpp

@@ -587,10 +587,11 @@ namespace transport
 		if (i2p::context.SupportsV4 ())
 		{
 			LogPrint (eLogInfo, "Transports: Started peer test ipv4");
+			std::set<i2p::data::IdentHash> excluded;
 			bool statusChanged = false;
 			for (int i = 0; i < 5; i++)
 			{
-				auto router = i2p::data::netdb.GetRandomPeerTestRouter (true); // v4 
+				auto router = i2p::data::netdb.GetRandomPeerTestRouter (true, excluded); // v4 
 				if (router)
 				{
 					auto addr = router->GetSSUAddress (true); // ipv4
@@ -603,6 +604,7 @@ namespace transport
 						}
 						m_SSUServer->CreateSession (router, addr, true); // peer test v4	
 					}	
+					excluded.insert (router->GetIdentHash ());
 				}
 			}
 			if (!statusChanged)
@@ -611,10 +613,11 @@ namespace transport
 		if (i2p::context.SupportsV6 ())
 		{
 			LogPrint (eLogInfo, "Transports: Started peer test ipv6");
+			std::set<i2p::data::IdentHash> excluded;
 			bool statusChanged = false;
 			for (int i = 0; i < 5; i++)
 			{
-				auto router = i2p::data::netdb.GetRandomPeerTestRouter (false); // v6
+				auto router = i2p::data::netdb.GetRandomPeerTestRouter (false, excluded); // v6
 				if (router)
 				{
 					auto addr = router->GetSSUV6Address ();
@@ -627,6 +630,7 @@ namespace transport
 						}
 						m_SSUServer->CreateSession (router, addr, true); // peer test v6
 					}	
+					excluded.insert (router->GetIdentHash ());
 				}
 			}
 			if (!statusChanged)