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5
This site shows you unconfirmed bitcoin transactions: https://blockchain.info/unconfirmed-transactions
As I understand it, these unconfirmed transactions are received and rebroadcast by every bitcoin client. Given that they are on my computer, how would I go about extracting this information (i.e. a list of all unconfirmed bitcoin transactions) from the bitcoin client?
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The RPC interface includes the getrawmempool command which returns transactions in your memory pool. Transactions stay in your memory pool until they're confirmed, so this is effetively a list your known unconfirmed transacions.
Since getrawmempool returns only a list of transaction ids, you'll have to getrawtransaction <txid> for each transaction id in your memory pool. Remember you can get JSON-formmated output via getrawtransaction <txid> 1.
It may be out of date, see https://bitcoin.org/en/developer-reference#getrawmempool it appears
– jangorecki – 2015-08-28T18:11:25.187getrawmempoolalready has extra argument for tx details