This is a stand-alone P2P transaction submission tool.
The motivation for this command is the -walletbroadcast=0
command introduced
in Bitcoin Core 0.11 (see the release notes.)
Usage:
usage: bitcoin-submittx [-h] [--proxy PROXY] [--timeout TIMEOUT]
NETWORK TXHEX NODES [NODES ...]
Transaction submission tool
positional arguments:
NETWORK Network to connect to (mainnet, regtest, testnet).
This also determines the default port
TXHEX Serialized transactions to broadcast, separated by
commas
NODES Nodes to connect to, denoted either host or host:port
optional arguments:
-h, --help show this help message and exit
--proxy PROXY, -p PROXY
SOCKS5 proxy to connect through
--timeout TIMEOUT, -t TIMEOUT
Number of seconds to wait before disconnecting from
nodes (default is 10)
The tool will connect to the provided nodes and announce the transactions. If the nodes subsequently request them within the timeout, they are sent.
The return status of the program will be 0 if at least one node requested the transaction, and 1 otherwise.
- Send the transaction as normal, either e.g. through RPC
sendtoaddress
or the GUI
$ bitcoin-cli sendtoaddress mjqhocRebTHZRhkbkQs8Uzzb1T3GhEvEB4 0.25
f91948e5...
- Using the transaction hash, retrieve the transaction data through RPC using
gettransaction
(NOTgetrawtransaction
). Thehex
field of the result will contain the raw hexadecimal representation of the transaction
$ bitcoin-cli gettransaction f91948e5...
{
...
"txid": "f91948e5...",
...
"hex": "010000000..."
}
- Provide the
hex
field as TXHEX to this tool. e.g.
$ bitcoin-submittx mainnet '010000000...' 127.0.0.1
(normally one would not submit the transaction to the localhost node, but this is just an illustrative example)
- Automatically fetch list of nodes to submit to
- possibly from DNS seeds (but this won't work behind Tor)
- IPv6 support
- Provide feedback if the transaction is rejected, apart from
recv msg_reject(messsage=tx, ccode=@, reason=non-final)
- Tor stream isolation (like
-proxyrandomize
in Bitcoin Core) - Load node lists / transactions from file
- Multi-hop proxies, different proxy types?
- Feature to handle incoming connections: can be handy when submitting transactions to nodes that are not listening
- python-bitcoinlib, also available via pypi:
pip install python-bitcoinlib