Function find_vout_for_address

test/functional/test_framework/util.py:614–628

Locate the vout index of the given transaction sending to the given address. Raises runtime error exception if not found.

(node, txid, addr)

def find_vout_for_address(node, txid, addr):
    """
    Locate the vout index of the given transaction sending to the
    given address. Raises runtime error exception if not found.
    """
    tx = node.getrawtransaction(txid, True)
    unblind_addr = addr
    if node.getblockchaininfo()['chain'] == 'elementsregtest':
        unblind_addr = node.validateaddress(addr)["unconfidential"]
    for i in range(len(tx["vout"])):
        if tx["vout"][i]["scriptPubKey"]["type"] == "fee":
            continue
        if unblind_addr == tx["vout"][i]["scriptPubKey"]["address"]:
            return i
    raise RuntimeError("Vout not found for address: txid=%s, addr=%s" % (txid, addr))

def modinv(a, n):
    """Compute the modular inverse of a modulo n using the extended Euclidean