substitute by price – Dropping changed transactions when watching the mempool

I’m attempting to seize all of the changed transactions. I’ve complied Bitcon Core with tracing enabled and hearken to the mempool:changed as steered on this query.

This methodology works as anticipated and I can get the changed transactions. Nonetheless, in some circumstances (about 20% of all of the transactions I seize) the tracepoint alerts me of the transaction being changed, however then I’m not capturing the alternative of that transaction.

I can consider two the explanation why that is occurring:

1. It might be that among the replacements don’t enter my mempool. But when that’s the case, how does the tracepoint is aware of that the transactions is being changed? Additionally, it’s bizarre that this may occur with so many transactions (20% as defined earlier).
2. The second possibility is that the script that course of the transaction shouldn’t be contemplating some circumstances, which leads to shedding transactions. The script is a modified model of this instance. I’ve modified it so I can seize the youngsters of the changed transactions as properly. The information I collect with this script is later saved in a pkl file, which is why it has a shared record.

I do not know why I’m shedding so many transactions, and I used to be questioning if somebody might assist see what I’m doing improper.

Listed here are the modified capabilities:

       def handle_replaced(_, knowledge, dimension):
          # Set up a brand new RPC connection for this occasion
          rpc_connection_replaced = connection()
          occasion = bpf["replaced_events"].occasion(knowledge)
          hash_replaced = bytes(occasion.replaced_hash)[::-1].hex()
          hash_new = bytes(occasion.replacement_hash)[::-1].hex()
          tx_time = get_timestamp()
          
          hex_tx = rpc_connection_replaced.getrawtransaction(hash_new)
          new_tx = rpc_connection_replaced.decoderawtransaction(hex_tx)
          new_tx['hex'] = hex_tx
          # Decide guardian transactions which can be nonetheless within the mempool and usually are not the transaction itself
          dad and mom = set([x['txid'] for x in new_tx['vin'] if x['txid'] in mempool.keys() and x['txid'] != new_tx['txid']])
          # Retrieve the outdated transaction data from the mempool 
          outdated = mempool.get(hash_replaced, None)
          if outdated shouldn't be None:  # Some transactions could also be lacking initially
            mempool.pop(hash_replaced, None)
            # Share the changed occasion particulars by way of list_shared queue
            list_shared.put((outdated, [new_tx, tx_time, parents]))
            # Discover all youngster transactions that reference the brand new transaction as a guardian
            childs = [i[0]['txid'] for i in mempool.values() if new_tx['txid'] in i[2]]
            
            # Recursive operate to gather youngster transaction IDs
            def youngster(ll):
              if len(ll) == 0:
                return []
              new_childs = [i[0]['txid'] for i in mempool.values() if ll - i[2] != ll]
              return record(ll) + new_childs + youngster(set(new_childs))
            
            if len(childs) > 0:
              childs = youngster(set(childs))
              # Share the connection between the brand new transaction and the primary youngster
              list_shared.put(([new_tx, tx_time, parents], mempool[childs[0]]))
              # Share connections between subsequent youngster transactions
              for i in vary(len(childs)-1):
                list_shared.put((mempool[childs[i]], mempool[childs[i+1]]))

          # Add the brand new transaction to the mempool with its timestamp and guardian set
          mempool[new_tx['txid']] = [new_tx, tx_time, parents]
          logger.data('-----------')
          logger.data('New RBF!')        
          
      def handle_added(_, knowledge, dimension):
          rpc_connection_added = connection()
          occasion = bpf["added_events"].occasion(knowledge)
          hash_new = bytes(occasion.hash)[::-1].hex()
          hex_tx = rpc_connection_added.getrawtransaction(hash_new)
          tx_raw = rpc_connection_added.decoderawtransaction(hex_tx)
          tx_raw['hex'] = hex_tx
          dad and mom = set([x['txid'] for x in tx_raw['vin'] if x['txid'] in mempool.keys()])
          mempool[tx_raw['txid']] = [tx_raw, get_timestamp(), parents]
          
      def handle_removed(_, knowledge, dimension):
        occasion = bpf["removed_events"].occasion(knowledge)
        if occasion.purpose != b'changed':
            txid_rem = bytes(occasion.hash)[::-1].hex()
                    
            keys = mempool.keys()
            if txid_rem in keys:
              mempool.pop(txid_rem) 
              logger.data('-----------')
              logger.data(f'Eliminated. Motive:{occasion.purpose}')