The network broadcast API is available from the full node via web-sockets.
Transactions
broadcast_transaction
Broadcast a transaction to the network.
The transaction will be checked for validity in the local database prior to broadcasting. If it fails to apply locally, an error will be thrown and the transaction will not be broadcast
This version of broadcast transaction registers a callback method that will be called when the transaction is included into a block. The callback method includes the transaction id, block number, and transaction number in the block.