ozontech/pg_doorman v3.3.3 on GitHub

Log spam from missing /proc/net/tcp6 when IPv6 disabled. get_socket_states_count failed entirely if any of the three /proc files was absent, logging errors every 15 seconds and losing tcp/unix metrics that were available. Missing files are now skipped — counters stay at zero. Other I/O errors (permission denied) still propagate.
Protocol violation when streaming large DataRow with cached prepared statements. handle_large_data_row wrote accumulated protocol messages (BindComplete, RowDescription) directly to the client socket, bypassing reorder_parse_complete_responses. When Parse was skipped (prepared statement cache hit), the client received BindComplete without the synthetic ParseComplete — causing Received backend message BindComplete while expecting ParseCompleteMessage in Npgsql and similar drivers. Triggered when message_size_to_be_stream ≤ 64KB. Fixed by returning accumulated messages from recv() before entering the streaming path, so response reordering runs first. Same fix applied to handle_large_copy_data.