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A new RPC,
submitpackage, has been added. It can be used to submit a list of raw hex transactions to the mempool to be evaluated as a package using consensus and mempool policy rules. These policies include package CPFP, allowing a child with high fees to bump a parent below the mempool minimum feerate (but not minimum relay feerate).-
Warning: successful submission does not mean the transactions will propagate throughout the network, as package relay is not supported.
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Not all features are available. The package is limited to a child with all of its unconfirmed parents, and no parent may spend the output of another parent. Also, package RBF is not supported. Refer to doc/policy/packages.md for more details on package policies and limitations.
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This RPC is experimental. Its interface may change.
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