rebuild exit paths if they die

llarp/exit/session.cpp

@@ -26,9 +26,10 @@ namespace llarp
     {
     }
 
-    void BaseSession::HandlePathDied(path::Path_ptr)
+    void
+    BaseSession::HandlePathDied(path::Path_ptr p)
     {
-      BuildOne();
+      p->Rebuild();
     }
 
     util::StatusObject

llarp/path/path.cpp

@@ -515,6 +515,16 @@ namespace llarp
       return obj;
     }
 
+    void
+    Path::Rebuild()
+    {
+      std::vector< RouterContact > newHops;
+      for(const auto& hop : hops)
+        newHops.emplace_back(hop.rc);
+      LogInfo(Name(), " rebuilding on ", HopsString());
+      m_PathSet->Build(newHops);
+    }
+
     void
     Path::Tick(llarp_time_t now, AbstractRouter* r)
     {

llarp/path/path.hpp

@@ -435,6 +435,11 @@ namespace llarp
       bool
       Expired(llarp_time_t now) const override;
 
+      /// build a new path on the same set of hops as us
+      /// regenerates keys
+      void
+      Rebuild();
+
       void
       Tick(llarp_time_t now, AbstractRouter* r);
 

llarp/path/pathset.hpp

@@ -76,6 +76,11 @@ namespace llarp
       virtual void
       BuildOne(PathRole roles = ePathRoleAny) = 0;
 
+      /// manual build on these hops
+      virtual void
+      Build(const std::vector< RouterContact >& hops,
+            PathRole roles = ePathRoleAny) = 0;
+
       /// tick owned paths
       virtual void
       Tick(llarp_time_t now) = 0;