def parse(byte_string):
scid, remainder, err = Namespace.pop_short_channel_id(byte_string)
if err:
return None, err
#print("scid: %s, remainder: %s\n" % (scid, remainder.hex()))
amt_to_forward, remainder, err = Namespace.pop_u64(remainder)
if err:
return None, err
#print("amt: %s, remainder: %s\n" % (amt_to_forward, remainder.hex()))
outgoing_cltv_value, remainder, err = Namespace.pop_u32(remainder)
if err:
return None, err
#print("outgoing: %s, remainder: %s\n" % (outgoing_cltv_value,
# remainder.hex()))
padding, remainder, err = Namespace.pop_bytes(12, remainder)
if err:
return None, err
#print("padding %s, remainder: %s\n" % (padding, remainder.hex()))
if len(remainder) != 0:
return None, "unexpected remaining bytes"
return {
'format': 'legacy',
'short_channel_id': scid,
'amt_to_forward': amt_to_forward,
'outgoing_cltv_value': outgoing_cltv_value,
'padding': padding
}, None
def parse_tlv3(self, tlv):
print("parsing tlv3: %s" % tlv)
node_id, remainder, err = Namespace.pop_point(tlv.v)
if err:
return None, err
amount_msat_1, remainder, err = Namespace.pop_u64(remainder)
if err:
return None, err
amount_msat_2, remainder, err = Namespace.pop_u64(remainder)
if err:
return None, err
if len(remainder) != 0:
return None, "unexpected remaining bytes"
return {
'tlv_type_name': "tlv3",
'node_id': node_id,
'amount_msat_1': amount_msat_1,
'amount_msat_2': amount_msat_2
}, None
