Improve error logging, style, refactor.

include/bitcoin/node/chasers/chaser_block.hpp

@@ -52,7 +52,7 @@ class BCN_API chaser_block
     struct validated_block
     {
         database::context context;
-        system::chain::block::cptr item;
+        system::chain::block::cptr block;
     };
     typedef std::vector<database::header_link> header_links;
 
@@ -91,15 +91,21 @@ class BCN_API chaser_block
     /// Move tree header to database and push to top of candidate chain.
     virtual bool push(const system::hash_digest& key) NOEXCEPT;
 
+    /// Populate block prevouts and metadata from block tree.
+    virtual void populate(const system::chain::block& block) const NOEXCEPT;
+
+    /// Validate and organize next block in sequence relative to caller peer.
+    virtual void do_organize(const system::chain::block::cptr& block,
+        const network::result_handler& handler) NOEXCEPT;
+
     /// Properties.
     /// Given non-current blocks cached in memory, should always be zero/false.
     virtual const network::wall_clock::duration& currency_window() const NOEXCEPT;
     virtual bool use_currency_window() const NOEXCEPT;
 
 private:
+    void set_prevout(const system::chain::input& input) const NOEXCEPT;
     void do_handle_event(const code& ec, chase event_, link value) NOEXCEPT;
-    void do_organize(const system::chain::block::cptr& block,
-        const network::result_handler& handler) NOEXCEPT;
 
     // These are thread safe.
     const system::chain::checkpoints& checkpoints_;

include/bitcoin/node/chasers/chaser_header.hpp

@@ -53,7 +53,7 @@ class BCN_API chaser_header
     struct proposed_header
     {
         database::context context;
-        system::chain::header::cptr item;
+        system::chain::header::cptr header;
     };
     typedef std::vector<database::header_link> header_links;
 
@@ -92,14 +92,16 @@ class BCN_API chaser_header
     /// Move tree header to database and push to top of candidate chain.
     virtual bool push(const system::hash_digest& key) NOEXCEPT;
 
+    /// Validate and organize next header in sequence relative to caller peer.
+    virtual void do_organize(const system::chain::header::cptr& header,
+        const network::result_handler& handler) NOEXCEPT;
+
     /// Properties.
     virtual const network::wall_clock::duration& currency_window() const NOEXCEPT;
     virtual bool use_currency_window() const NOEXCEPT;
 
 private:
     void do_handle_event(const code& ec, chase event_, link value) NOEXCEPT;
-    void do_organize(const system::chain::header::cptr& header,
-        const network::result_handler& handler) NOEXCEPT;
 
     // These are thread safe.
     const system::chain::checkpoints& checkpoints_;

include/bitcoin/node/protocols/protocol.hpp

@@ -61,9 +61,6 @@ class BCN_API protocol
     virtual void organize(const system::chain::block::cptr& block,
         network::result_handler&& handler) NOEXCEPT;
 
-    /// Handle organize result.
-    virtual void handle_organize(const code& ec) NOEXCEPT;
-
     /// Configuration settings for all libraries.
     const configuration& config() const NOEXCEPT;
 

include/bitcoin/node/protocols/protocol_block_in.hpp

@@ -71,6 +71,10 @@ class BCN_API protocol_block_in
     /// Invoked when initial blocks sync is complete.
     virtual void complete() NOEXCEPT;
 
+    /// Handle organize result.
+    virtual void handle_organize(const code& ec,
+        const system::chain::block::cptr& block_ptr) NOEXCEPT;
+
 private:
     static system::hashes to_hashes(
         const network::messages::get_data& getter) NOEXCEPT;

include/bitcoin/node/protocols/protocol_block_in_31800.hpp

@@ -26,6 +26,7 @@
 namespace libbitcoin {
 namespace node {
 
+/// This does NOT inhereit from protocol_block_in.
 class BCN_API protocol_block_in_31800
   : public node::protocol,
     protected network::tracker<protocol_block_in_31800>
@@ -82,6 +83,10 @@ class BCN_API protocol_block_in_31800
     /// Invoked when initial blocks sync is complete.
     virtual void complete() NOEXCEPT;
 
+    /// Handle organize result.
+    virtual void handle_organize(const code& ec,
+        const system::chain::block::cptr& block_ptr) NOEXCEPT;
+
 private:
     static system::hashes to_hashes(
         const network::messages::get_data& getter) NOEXCEPT;

include/bitcoin/node/protocols/protocol_header_in_31800.hpp

@@ -52,6 +52,10 @@ class BCN_API protocol_header_in_31800
     /// Invoked when initial headers sync is complete.
     virtual void complete() NOEXCEPT;
 
+    /// Handle organize result.
+    virtual void handle_organize(const code& ec,
+        const system::chain::header::cptr& header_ptr) NOEXCEPT;
+
 private:
     network::messages::get_headers create_get_headers() NOEXCEPT;
     network::messages::get_headers create_get_headers(

include/bitcoin/node/sessions/attach.hpp

@@ -57,40 +57,37 @@ class attach
     void attach_protocols(
         const network::channel::ptr& channel) NOEXCEPT override
     {
+        auto& self = *this;
+        ////const auto version = channel->negotiated_version();
+        ////constexpr auto performance = false;
+
         // Attach appropriate alert, reject, ping, and/or address protocols.
         Session::attach_protocols(channel);
-
-        auto& self = *this;
-        const auto version = channel->negotiated_version();
 
-        if (version >= network::messages::level::bip130)
-        {
-            channel->attach<protocol_header_in_70012>(self)->start();
-            channel->attach<protocol_header_out_70012>(self)->start();
-        }
-        else if (version >= network::messages::level::headers_protocol)
-        {
-            channel->attach<protocol_header_in_31800>(self)->start();
-            channel->attach<protocol_header_out_31800>(self)->start();
-        }
-
-        ////if (version >= network::messages::level::headers_protocol)
+        // Very hard to find < 31800 peer to connect with.
+        ////if (version >= network::messages::level::bip130)
         ////{
-        ////    // Channels only compete for download rate in outbound session.
-        ////    constexpr auto performance = false;
-        ////
-        ////    // Parallel block download (works with header protocol).
-        ////    channel->attach<protocol_block_in_31800>(self, performance)->start();
+        ////    // Headers-first synchronization (parallel block download).
+        ////    channel->attach<protocol_header_in_70012>(self)->start();
+        ////    channel->attach<protocol_header_out_70012>(self)->start();
+        ////    ////channel->attach<protocol_block_in_31800>(self, performance)->start();
         ////}
-        ////else
+        ////else if (version >= network::messages::level::headers_protocol)
         ////{
-        ////    // Blocks-first synchronization (no header protocol).
-        ////    channel->attach<protocol_block_in>(self)->start();
+        ////    // Headers-first synchronization (parallel block download).
+        ////    channel->attach<protocol_header_in_31800>(self)->start();
+        ////    channel->attach<protocol_header_out_31800>(self)->start();
+        ////    ////channel->attach<protocol_block_in_31800>(self, performance)->start();
         ////}
+        ////else
+        {
+            // Blocks-first synchronization (no header protocol).
+            channel->attach<protocol_block_in>(self)->start();
+        }
 
-        ////channel->attach<protocol_block_out>(self)->start();
-        ////channel->attach<protocol_transaction_in>(self)->start();
-        ////channel->attach<protocol_transaction_out>(self)->start();
+        channel->attach<protocol_block_out>(self)->start();
+        channel->attach<protocol_transaction_in>(self)->start();
+        channel->attach<protocol_transaction_out>(self)->start();
     }
 };