Capture block pointers, WIP, disabled.

include/bitcoin/node/chase.hpp

@@ -88,17 +88,21 @@ enum class chase
     /// Issued by 'organize' and handled by 'validate' (disorgs candidates).
     disorganized,
 
-    /// Validation.
+    /// Check/Identify.
     /// -----------------------------------------------------------------------
 
     /// A block has been downloaded, checked and stored (height_t).
-    /// Issued by 'block_in_31800' and handled by 'connect'.
+    /// Issued by 'block_in_31800' or 'populate' and handled by 'connect'.
+    /// Populate is bypassed for checkpoint/milestone blocks.
     checked,
 
     /// A downloaded block has failed check (header_t).
     /// Issued by 'block_in_31800' and handled by 'header'.
     unchecked,
 
+    /// Accept/Connect.
+    /// -----------------------------------------------------------------------
+
     /// A branch has become valid (height_t).
     /// Issued by 'validate' and handled by 'confirm'.
     valid,
@@ -107,7 +111,7 @@ enum class chase
     /// Issued by 'validate' and handled by 'header'.
     unvalid,
 
-    /// Confirmation.
+    /// Confirm (block).
     /// -----------------------------------------------------------------------
 
     /// A connected block has become confirmable (header_t).
@@ -118,7 +122,7 @@ enum class chase
     /// Issued by 'confirm' and handled by 'header' (and 'block').
     unconfirmable,
 
-    /// Confirmed Chain.
+    /// Confirm (chain).
     /// -----------------------------------------------------------------------
 
     /// A confirmable block has been confirmed (header_t).

include/bitcoin/node/chasers/chaser_organize.hpp

@@ -42,8 +42,8 @@ class chaser_organize
     /// Initialize chaser state.
     virtual code start() NOEXCEPT;
 
-    /// Validate and organize next block in sequence relative to caller peer.
-    virtual void organize(const typename Block::cptr& block_ptr,
+    /// Validate and organize next Block in sequence relative to calling peer.
+    virtual void organize(const typename Block::cptr& block,
         organize_handler&& handler) NOEXCEPT;
 
 protected:
@@ -54,7 +54,7 @@ class chaser_organize
         chain_state::ptr state;
     };
     using block_tree = std::unordered_map<system::hash_digest, block_state>;
-    using header_links = std::vector<database::header_link>;
+    using header_links = std_vector<database::header_link>;
 
     /// Protected constructor for abstract base.
     chaser_organize(full_node& node) NOEXCEPT;
@@ -96,7 +96,7 @@ class chaser_organize
         event_value value) NOEXCEPT;
 
     /// Organize a discovered Block.
-    virtual void do_organize(typename Block::cptr block_ptr,
+    virtual void do_organize(typename Block::cptr block,
         const organize_handler& handler) NOEXCEPT;
 
     /// Reorganize following Block unconfirmability.
@@ -136,7 +136,7 @@ class chaser_organize
     // ------------------------------------------------------------------------
 
     // Store Block into logical tree cache.
-    void cache(const typename Block::cptr& block_ptr,
+    void cache(const typename Block::cptr& block,
         const chain_state::ptr& state) NOEXCEPT;
 
     // Obtain chain state for given previous hash, nullptr if not found.

include/bitcoin/node/chasers/chaser_populate.hpp

@@ -19,6 +19,9 @@
 #ifndef LIBBITCOIN_NODE_CHASERS_CHASER_POPULATE_HPP
 #define LIBBITCOIN_NODE_CHASERS_CHASER_POPULATE_HPP
 
+#include <bitcoin/system.hpp>
+#include <bitcoin/database.hpp>
+#include <bitcoin/network.hpp>
 #include <bitcoin/node/chasers/chaser.hpp>
 #include <bitcoin/node/define.hpp>
 
@@ -39,14 +42,23 @@ class BCN_API chaser_populate
     /// Initialize chaser state.
     code start() NOEXCEPT override;
 
+    /// Populate a candidate block for validation.
+    virtual void populate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height,
+        network::result_handler&& complete) NOEXCEPT;
+
 protected:
     virtual bool handle_event(const code& ec, chase event_,
         event_value value) NOEXCEPT;
 
-    virtual void do_checked(height_t height) NOEXCEPT;
+    virtual void do_populate(const system::chain::block::cptr& block,
+        database::header_link::integer link, size_t height,
+        const network::result_handler& complete) NOEXCEPT;
 
 private:
-    // TODO:
+    // These are protected by strand.
+    network::threadpool threadpool_;
+    network::asio::strand independent_strand_;
 };
 
 } // namespace node

include/bitcoin/node/chasers/chaser_validate.hpp

@@ -20,6 +20,7 @@
 #define LIBBITCOIN_NODE_CHASERS_CHASER_VALIDATE_HPP
 
 #include <bitcoin/database.hpp>
+#include <bitcoin/network.hpp>
 #include <bitcoin/node/chasers/chaser.hpp>
 #include <bitcoin/node/define.hpp>
 
@@ -39,12 +40,19 @@ class BCN_API chaser_validate
 
     code start() NOEXCEPT override;
 
+    /// Validate a populated candidate block.
+    virtual void validate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height) NOEXCEPT;
+
 protected:
     typedef network::race_unity<const code&, const database::tx_link&> race;
 
     virtual bool handle_event(const code& ec, chase event_,
         event_value value) NOEXCEPT;
 
+    virtual void do_validate(const system::chain::block::cptr& block,
+        database::header_link::integer link, size_t height) NOEXCEPT;
+
     virtual void do_regressed(height_t branch_point) NOEXCEPT;
     virtual void do_checked(height_t height) NOEXCEPT;
     virtual void do_bump(height_t height) NOEXCEPT;

include/bitcoin/node/define.hpp

@@ -74,32 +74,18 @@ using channel_t = uint64_t;
 using object_t = object_key;
 using header_t = database::header_link::integer;
 using transaction_t = database::tx_link::integer;
-typedef system::chain::block::cptr block_t;
-////typedef struct
-////{
-////    size_t height;
-////    database::header_link link;
-////    system::chain::block::cptr block;
-////} xblock_t;
 
 /// std::variant types must be distinct, and xcode size_t is neither uint32_t 
 /// nor uint64_t, so this ensures we have the distinct set of necessary types.
 using event_value =
     iif<is_same_type<std::size_t, uint64_t>,
-        std::variant<uint32_t, size_t, block_t>,
+        std::variant<uint32_t, size_t>,
         iif<is_same_type<std::size_t, uint32_t>,
-            std::variant<uint64_t, size_t, block_t>,
-                std::variant<uint64_t, uint32_t, size_t, block_t>>>;
-////using xevent_value =
-////    iif<is_same_type<std::size_t, uint64_t>,
-////        std::variant<uint32_t, size_t, xblock_t>,
-////        iif<is_same_type<std::size_t, uint32_t>,
-////            std::variant<uint64_t, size_t, xblock_t>,
-////                std::variant<uint64_t, uint32_t, size_t, xblock_t>>>;
+            std::variant<uint64_t, size_t>,
+                std::variant<uint64_t, uint32_t, size_t>>>;
 
 /// Event desubscriber.
 typedef network::desubscriber<object_key, chase, event_value> event_subscriber;
-////typedef network::desubscriber<object_key, chase, xevent_value> xevent_subscriber;
 typedef event_subscriber::handler event_notifier;
 typedef event_subscriber::completer event_completer;
 

include/bitcoin/node/full_node.hpp

@@ -93,6 +93,18 @@ class BCN_API full_node
     /// Unsubscribe from chaser events.
     virtual void unsubscribe_events(object_key key) NOEXCEPT;
 
+    /// Blocks.
+    /// -----------------------------------------------------------------------
+
+    /// Populate a candidate block for validation.
+    virtual void populate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height,
+        network::result_handler&& complete) NOEXCEPT;
+
+    /// Validate a populated candidate block.
+    virtual void validate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height) NOEXCEPT;
+
     /// Suspensions.
     /// -----------------------------------------------------------------------
 
@@ -156,6 +168,7 @@ class BCN_API full_node
     chaser_block chaser_block_;
     chaser_header chaser_header_;
     chaser_check chaser_check_;
+    ////chaser_populate chaser_populate_;
     chaser_validate chaser_validate_;
     chaser_confirm chaser_confirm_;
     chaser_transaction chaser_transaction_;

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

@@ -69,13 +69,13 @@ code CLASS::start() NOEXCEPT
 }
 
 TEMPLATE
-void CLASS::organize(const typename Block::cptr& block_ptr,
+void CLASS::organize(const typename Block::cptr& block,
     organize_handler&& handler) NOEXCEPT
 {
     if (closed())
         return;
 
-    POST(do_organize, block_ptr, std::move(handler));
+    POST(do_organize, block, std::move(handler));
 }
 
 // Methods
@@ -114,14 +114,14 @@ bool CLASS::handle_event(const code&, chase event_, event_value value) NOEXCEPT
 }
 
 TEMPLATE
-void CLASS::do_organize(typename Block::cptr block_ptr,
+void CLASS::do_organize(typename Block::cptr block,
     const organize_handler& handler) NOEXCEPT
 {
     using namespace system;
     BC_ASSERT(stranded());
 
-    const auto& hash = block_ptr->get_hash();
-    const auto& header = get_header(*block_ptr);
+    const auto& hash = block->get_hash();
+    const auto& header = get_header(*block);
     auto& query = archive();
 
     // Skip existing/orphan, get state.
@@ -174,7 +174,7 @@ void CLASS::do_organize(typename Block::cptr block_ptr,
 
     // Headers are late validated, with malleations ignored upon download.
     // Blocks are fully validated (not confirmed), so malleation is non-issue.
-    if ((ec = validate(*block_ptr, *state)))
+    if ((ec = validate(*block, *state)))
     {
         handler(ec, height);
         return;
@@ -184,7 +184,7 @@ void CLASS::do_organize(typename Block::cptr block_ptr,
     if (!is_storable(*state))
     {
         log_state_change(*parent, *state);
-        cache(block_ptr, state);
+        cache(block, state);
         handler(error::success, height);
         return;
     }
@@ -215,7 +215,7 @@ void CLASS::do_organize(typename Block::cptr block_ptr,
     if (!strong)
     {
         log_state_change(*parent, *state);
-        cache(block_ptr, state);
+        cache(block, state);
         handler(error::success, height);
         return;
     }
@@ -283,7 +283,7 @@ void CLASS::do_organize(typename Block::cptr block_ptr,
 
     // Push new header as top of candidate chain.
     {
-        if ((ec = push_block(*block_ptr, state->context())))
+        if ((ec = push_block(*block, state->context())))
         {
             handler(fault(ec), height);
             return;
@@ -368,18 +368,18 @@ void CLASS::do_disorganize(header_t link) NOEXCEPT
     // ........................................................................
     // Forward order is required to advance chain state for tree.
 
-    typename Block::cptr block_ptr{};
+    typename Block::cptr block{};
     for (auto index = add1(fork_point); index < height; ++index)
     {
-        if (!get_block(block_ptr, index))
+        if (!get_block(block, index))
         {
             fault(error::get_block);
             return;
         }
 
-        const auto& header = get_header(*block_ptr);
+        const auto& header = get_header(*block);
         state.reset(new chain::chain_state{ *state, header, settings_ });
-        cache(block_ptr, state);
+        cache(block, state);
     }
 
     // Pop candidates from top candidate down to above fork point.
@@ -439,10 +439,10 @@ void CLASS::do_disorganize(header_t link) NOEXCEPT
 // ----------------------------------------------------------------------------
 
 TEMPLATE
-void CLASS::cache(const typename Block::cptr& block_ptr,
+void CLASS::cache(const typename Block::cptr& block,
     const chain_state::ptr& state) NOEXCEPT
 {
-    tree_.insert({ block_ptr->hash(), { block_ptr, state } });
+    tree_.insert({ block->hash(), { block, state } });
 }
 
 TEMPLATE

include/bitcoin/node/protocols/protocol.hpp

@@ -20,6 +20,7 @@
 #define LIBBITCOIN_NODE_PROTOCOLS_PROTOCOL_HPP
 
  // Individual session.hpp inclusion to prevent cycle (can't forward declare).
+#include <bitcoin/database.hpp>
 #include <bitcoin/network.hpp>
 #include <bitcoin/node/define.hpp>
 #include <bitcoin/node/sessions/session.hpp>
@@ -96,6 +97,18 @@ class BCN_API protocol
     /// Get the subscription key (for notify_one).
     virtual object_key events_key() const NOEXCEPT;
 
+    /// Blocks.
+    /// -----------------------------------------------------------------------
+
+    /// Populate a candidate block for validation.
+    virtual void populate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height,
+        network::result_handler&& complete) NOEXCEPT;
+
+    /// Validate a populated candidate block.
+    virtual void validate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height) NOEXCEPT;
+
     /// Properties.
     /// -----------------------------------------------------------------------
 

include/bitcoin/node/protocols/protocol_block_in_31800.hpp

@@ -76,6 +76,10 @@ class BCN_API protocol_block_in_31800
 private:
     using type_id = network::messages::inventory::type_id;
 
+    // HACK
+    void complete(const code& ec, const system::chain::block::cptr& block,
+        size_t height) const NOEXCEPT;
+
     code check(const system::chain::block& block,
         const system::chain::context& ctx, bool bypass) const NOEXCEPT;
 
@@ -97,6 +101,8 @@ class BCN_API protocol_block_in_31800
     // These are protected by strand.
     map_ptr map_;
     job::ptr job_{};
+
+    std_vector<system::chain::block::cptr> blocks_{};
 };
 
 } // namespace node

include/bitcoin/node/sessions/session.hpp

@@ -20,6 +20,7 @@
 #define LIBBITCOIN_NODE_SESSIONS_SESSION_HPP
 
 #include <memory>
+#include <bitcoin/database.hpp>
 #include <bitcoin/network.hpp>
 #include <bitcoin/node/define.hpp>
 #include <bitcoin/node/full_node.hpp>
@@ -73,6 +74,18 @@ class BCN_API session
     /// Unsubscribe from chaser events.
     virtual void unsubscribe_events(object_key key) NOEXCEPT;
 
+    /// Blocks.
+    /// -----------------------------------------------------------------------
+
+    /// Populate a candidate block for validation.
+    virtual void populate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height,
+        network::result_handler&& complete) NOEXCEPT;
+
+    /// Validate a populated candidate block.
+    virtual void validate(const system::chain::block::cptr& block,
+        const database::header_link& link, size_t height) NOEXCEPT;
+
     /// Methods.
     /// -----------------------------------------------------------------------
 

src/chasers/chaser_confirm.cpp

@@ -287,8 +287,7 @@ bool chaser_confirm::enqueue_block(const header_link& link) NOEXCEPT
 
     for (auto tx = std::next(txs.begin()); tx != txs.end(); ++tx)
         boost::asio::post(threadpool_.service(),
-            std::bind(&chaser_confirm::confirm_tx,
-                this, ctx, *tx, racer));
+            BIND(confirm_tx, ctx, *tx, racer));
 
     return true;
 }