dcrubro
88a9caa46c
Reclaim outbound slots on peer disconnect: - TcpClient_ThreadProc fired on_disconnect but never cleared the outbound slot, closed the fd, joined the io thread, or freed the connection, so a dead peer permanently held its outboundClients[] slot. After MAX_CONS (32) churned connections the node could make no new outbound connections, and leaked fds/threads/memory. (The inbound side already self-reclaimed.) - Add a reaper (Node_ReapDeadOutbound) on the maintenance thread: under outboundLock it detaches dead (disconnect-notified) slots, then joins the io thread and destroys/frees each connection outside the lock. - Guard against use-after-free with a pin count on tcp_connection_t (TcpConnection_Pin/Unpin). The only cross-thread consumer holding a raw connection pointer across a blocking op is the `sync` command (via Node_GetBestOutboundPeer); it now pins the peer and unpins when done, and the reaper skips pinned connections. Discovery's snapshots run on the reaper's own thread, so they need no pin. - Node_GetBestOutboundPeer/GetClientList/GetPeerEndpoints skip disconnect-notified connections so a dead peer is never handed out. - Node_Destroy stops+joins the maintenance thread before tearing down outbound clients, so the reaper can't race shutdown. Strike disconnected peers from the discovery peer list: - Add NodeDiscovery_RemovePeer + Node_HandlePeerDisconnect: on disconnect, remove the peer from the known-peer table once no live connection (inbound or outbound) to its listen endpoint remains (Node_HasLiveConnectionTo; disconnect-notified conns don't count, so both directions dropping at once is handled). Wired into Node_Server_OnDisconnect and Node_Client_OnDisconnect.
Skalacoin
Privacy coin made in C. One day hopefully with a purpose beyond "educational" :)
Some notes for me right now:
cmake:
cmake .. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_FLAGS="-fsanitize=address -fno-omit-frame-pointer" -DCMAKE_CXX_FLAGS="-fsanitize=address -fno-omit-frame-pointer" -DCMAKE_EXE_LINKER_FLAGS="-fsanitize=address"
Build with clang/clang++ (I don't want to deal with the gcc/MSVC shenangans right now)
Use:
./bin/skalacoin_node <-mine>
Main Hashing Algorithm: SHA256d (double SHA256) for now. Proof-of-Work Algorithm: Autolykos2