Comments, logging.

include/bitcoin/node/impl/chasers/chaser_organize.ipp

@@ -359,6 +359,10 @@ void CLASS::do_organize(typename Block::cptr& block_ptr,
 
     // Delay so headers can get current before block download starts.
     // Checking currency before notify also avoids excessive work backlog.
+
+    // If all headers are previously associated then no blocks will be fed to
+    // preconfirmation, resulting in a stall...
+
     if (is_block() || is_current(header.timestamp()))
         notify(error::success, chase_object(), branch_point);
 
@@ -465,8 +469,6 @@ void CLASS::do_disorganize(header_t link) NOEXCEPT
 
     for (auto index = top_candidate; index > fork_point; --index)
     {
-        LOGN("Reorganizing candidate [" << index << "].");
-
         if (!query.pop_candidate())
         {
             fault(error::store_integrity);

src/chasers/chaser_check.cpp

@@ -119,6 +119,7 @@ void chaser_check::handle_event(const code&, chase event_,
 // add headers
 // ----------------------------------------------------------------------------
 
+// TODO: create a tracking map with hashes only?
 // Due to a race with header organization more current headers and branch
 // points may be created while preceding headers messages are in transit. That
 // can result  in the branch->top scan finding the same unassociated headers

src/chasers/chaser_preconfirm.cpp

@@ -61,6 +61,11 @@ void chaser_preconfirm::handle_event(const code&, chase event_,
             POST(do_checked, height_t{});
             break;
         }
+        case chase::header:
+        {
+            POST(do_checked, height_t{});
+            break;
+        }
         case chase::checked:
         {
             POST(do_height_checked, possible_narrow_cast<height_t>(value));
@@ -84,7 +89,7 @@ void chaser_preconfirm::handle_event(const code&, chase event_,
         case chase::stall:
         case chase::purge:
         case chase::block:
-        case chase::header:
+        ////case chase::header:
         case chase::download:
         ////case chase::checked:
         case chase::unchecked: