tweak ft max numbers and add stats comp

solanaceae/ngc_ft1_sha1/chunk_picker.hpp

@@ -30,7 +30,7 @@ struct ChunkPickerTimer {
 struct ChunkPicker {
 	// max transfers
 	static constexpr size_t max_tf_info_requests {1};
-	static constexpr size_t max_tf_chunk_requests {3}; // TODO: dynamic, function/factor of (window(delay*speed)/chunksize)
+	static constexpr size_t max_tf_chunk_requests {4}; // TODO: dynamic, function/factor of (window(delay*speed)/chunksize)
 
 	// TODO: cheaper init? tls rng for deep seeding?
 	std::minstd_rand _rng{std::random_device{}()};

solanaceae/ngc_ft1_sha1/components.hpp

@@ -7,11 +7,13 @@
 #include <solanaceae/util/bitset.hpp>
 
 #include <entt/container/dense_set.hpp>
+#include <entt/container/dense_map.hpp>
 
 #include "./ft1_sha1_info.hpp"
 #include "./hash_utils.hpp"
 
 #include <vector>
+#include <deque>
 
 
 // TODO: rename to object components
@@ -94,5 +96,34 @@ namespace Components {
 		uint64_t offset_into_file {0u};
 	};
 
+	// this is per object/content
+	// more aplicable than "separated", so should be supported by most backends
+	struct TransferStats {
+		// in bytes per second
+		float rate_up {0.f};
+		float rate_down {0.f};
+
+		// bytes
+		uint64_t total_up {0u};
+		uint64_t total_down {0u};
+	};
+
+	struct TransferStatsSeparated {
+		entt::dense_map<Contact3, TransferStats> stats;
+	};
+
+	// used to populate stats
+	struct TransferStatsTally {
+		struct Peer {
+			struct Entry {
+				float time_since {0.f};
+				size_t bytes {0u};
+			};
+			std::deque<Entry> recently_sent;
+			std::deque<Entry> recently_received;
+		};
+		entt::dense_map<Contact3, Peer> tally;
+	};
+
 } // Components
 

solanaceae/ngc_ft1_sha1/sha1_ngcft1.hpp

@@ -100,7 +100,7 @@ class SHA1_NGCFT1 : public ToxEventI, public RegistryMessageModelEventI, public
 		bool _udp_only {false};
 
 		size_t _max_concurrent_in {4}; // info only
-		size_t _max_concurrent_out {3*4}; // HACK: allow ideal number for 4 peers
+		size_t _max_concurrent_out {4*10}; // HACK: allow "ideal" number for 10 peers
 
 	public:
 		SHA1_NGCFT1(