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With getrawmempool it gets me txids, however it just dumps the whole mempool on me. This isn't convenient if I want to quickly detect new transactions. Is it possible to only get newly broadcasted transactions?
Is there another way to sort of stream them from bitcoin-core into my program?
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You can use the ZMQ interface to receive a ZMQ notification when a new transaction is received. You can have it give you the txid, the raw transaction, or both.
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I think what you are looking for is walletnotify. You can set on bitcoin.conf file.
For example
walletnotify=/home/process_tx.sh
That will call /home/process_tx.sh passing as parameter the transaction hash
Or you can also run bitcoind with using -walletnotify
bitcoind -walletnotify=/home/process_tx.sh
1As far as I understand,
walletnotifyonly notifies of transactions made to the address that belong to that wallet. I'm interested in collecting all transactions that are broadcasted. – snitko – 2017-08-17T04:20:23.560In that case, you should use ZMQ as sugest by @Andrew Chow – carvmarc – 2017-08-17T15:08:33.197