//! returned errors decode to the correct thing.
use chain::channelmonitor::{CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS};
-use ln::channelmanager::{HTLCForwardInfo, PaymentPreimage, PaymentHash};
+use ln::channelmanager::{HTLCForwardInfo, PaymentPreimage, PaymentHash, PaymentSecret};
use ln::onion_utils;
use routing::router::{Route, get_route};
-use ln::features::InitFeatures;
+use ln::features::{InitFeatures, InvoiceFeatures};
use ln::msgs;
use ln::msgs::{ChannelMessageHandler, HTLCFailChannelUpdate, OptionalField};
use util::test_utils;
use util::ser::{Writeable, Writer};
use util::config::UserConfig;
-use bitcoin::blockdata::block::{Block, BlockHeader};
use bitcoin::hash_types::BlockHash;
use bitcoin::hashes::sha256::Hash as Sha256;
use bitcoin::secp256k1::key::SecretKey;
use std::default::Default;
-use std::sync::atomic::Ordering;
use std::io;
use ln::functional_test_utils::*;
-fn run_onion_failure_test<F1,F2>(_name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash, callback_msg: F1, callback_node: F2, expected_retryable: bool, expected_error_code: Option<u16>, expected_channel_update: Option<HTLCFailChannelUpdate>)
+fn run_onion_failure_test<F1,F2>(_name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash, payment_secret: &PaymentSecret, callback_msg: F1, callback_node: F2, expected_retryable: bool, expected_error_code: Option<u16>, expected_channel_update: Option<HTLCFailChannelUpdate>)
where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC),
F2: FnMut(),
{
- run_onion_failure_test_with_fail_intercept(_name, test_case, nodes, route, payment_hash, callback_msg, |_|{}, callback_node, expected_retryable, expected_error_code, expected_channel_update);
+ run_onion_failure_test_with_fail_intercept(_name, test_case, nodes, route, payment_hash, payment_secret, callback_msg, |_|{}, callback_node, expected_retryable, expected_error_code, expected_channel_update);
}
// test_case
// 3: final node fails backward (but tamper onion payloads from node0)
// 100: trigger error in the intermediate node and tamper returning fail_htlc
// 200: trigger error in the final node and tamper returning fail_htlc
-fn run_onion_failure_test_with_fail_intercept<F1,F2,F3>(_name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash, mut callback_msg: F1, mut callback_fail: F2, mut callback_node: F3, expected_retryable: bool, expected_error_code: Option<u16>, expected_channel_update: Option<HTLCFailChannelUpdate>)
+fn run_onion_failure_test_with_fail_intercept<F1,F2,F3>(_name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash, payment_secret: &PaymentSecret, mut callback_msg: F1, mut callback_fail: F2, mut callback_node: F3, expected_retryable: bool, expected_error_code: Option<u16>, expected_channel_update: Option<HTLCFailChannelUpdate>)
where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC),
F2: for <'a> FnMut(&'a mut msgs::UpdateFailHTLC),
F3: FnMut(),
{
-
- // reset block height
- let block = Block {
- header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
- txdata: vec![],
- };
- for ix in 0..nodes.len() {
- connect_block(&nodes[ix], &block, 1);
- }
-
macro_rules! expect_event {
($node: expr, $event_type: path) => {{
let events = $node.node.get_and_clear_pending_events();
}
// 0 ~~> 2 send payment
- nodes[0].node.send_payment(&route, payment_hash.clone(), &None).unwrap();
+ nodes[0].node.send_payment(&route, payment_hash.clone(), &Some(*payment_secret)).unwrap();
check_added_monitors!(nodes[0], 1);
let update_0 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
// temper update_add (0 => 1)
*node.keys_manager.override_session_priv.lock().unwrap() = Some([3; 32]);
}
let channels = [create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()), create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known())];
- let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
- let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
+ let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
let logger = test_utils::TestLogger::new();
- let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap();
+ let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap();
// positve case
- send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 40000, 40_000);
+ send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 40000);
// intermediate node failure
- run_onion_failure_test("invalid_realm", 0, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test("invalid_realm", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
- let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
+ let cur_height = nodes[0].best_block_info().1 + 1;
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 40000, &None, cur_height).unwrap();
let mut new_payloads = Vec::new();
}, ||{}, true, Some(PERM|22), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));//XXX incremented channels idx here
// final node failure
- run_onion_failure_test("invalid_realm", 3, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test("invalid_realm", 3, &nodes, &route, &payment_hash, &payment_secret, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
- let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
+ let cur_height = nodes[0].best_block_info().1 + 1;
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 40000, &None, cur_height).unwrap();
let mut new_payloads = Vec::new();
// the following three with run_onion_failure_test_with_fail_intercept() test only the origin node
// receiving simulated fail messages
// intermediate node failure
- run_onion_failure_test_with_fail_intercept("temporary_node_failure", 100, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test_with_fail_intercept("temporary_node_failure", 100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
// trigger error
msg.amount_msat -= 1;
}, |msg| {
}, ||{}, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][0].pubkey, is_permanent: false}));
// final node failure
- run_onion_failure_test_with_fail_intercept("temporary_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
+ run_onion_failure_test_with_fail_intercept("temporary_node_failure", 200, &nodes, &route, &payment_hash, &payment_secret, |_msg| {}, |msg| {
// and tamper returning error message
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], NODE|2, &[0;0]);
}, ||{
- nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
+ nodes[2].node.fail_htlc_backwards(&payment_hash);
}, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][1].pubkey, is_permanent: false}));
+ let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
// intermediate node failure
- run_onion_failure_test_with_fail_intercept("permanent_node_failure", 100, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test_with_fail_intercept("permanent_node_failure", 100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
}, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
}, ||{}, true, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][0].pubkey, is_permanent: true}));
// final node failure
- run_onion_failure_test_with_fail_intercept("permanent_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
+ run_onion_failure_test_with_fail_intercept("permanent_node_failure", 200, &nodes, &route, &payment_hash, &payment_secret, |_msg| {}, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|2, &[0;0]);
}, ||{
- nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
+ nodes[2].node.fail_htlc_backwards(&payment_hash);
}, false, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][1].pubkey, is_permanent: true}));
+ let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
// intermediate node failure
- run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 100, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
}, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|3, &[0;0]);
}, ||{
- nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
+ nodes[2].node.fail_htlc_backwards(&payment_hash);
}, true, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][0].pubkey, is_permanent: true}));
// final node failure
- run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
+ run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 200, &nodes, &route, &payment_hash, &payment_secret, |_msg| {}, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|3, &[0;0]);
}, ||{
- nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
+ nodes[2].node.fail_htlc_backwards(&payment_hash);
}, false, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][1].pubkey, is_permanent: true}));
+ let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
- run_onion_failure_test("invalid_onion_version", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.version = 1; }, ||{}, true,
+ run_onion_failure_test("invalid_onion_version", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| { msg.onion_routing_packet.version = 1; }, ||{}, true,
Some(BADONION|PERM|4), None);
- run_onion_failure_test("invalid_onion_hmac", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.hmac = [3; 32]; }, ||{}, true,
+ run_onion_failure_test("invalid_onion_hmac", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| { msg.onion_routing_packet.hmac = [3; 32]; }, ||{}, true,
Some(BADONION|PERM|5), None);
- run_onion_failure_test("invalid_onion_key", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.public_key = Err(secp256k1::Error::InvalidPublicKey);}, ||{}, true,
+ run_onion_failure_test("invalid_onion_key", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| { msg.onion_routing_packet.public_key = Err(secp256k1::Error::InvalidPublicKey);}, ||{}, true,
Some(BADONION|PERM|6), None);
- run_onion_failure_test_with_fail_intercept("temporary_channel_failure", 100, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test_with_fail_intercept("temporary_channel_failure", 100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
}, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], UPDATE|7, &ChannelUpdate::dummy().encode_with_len()[..]);
}, ||{}, true, Some(UPDATE|7), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
- run_onion_failure_test_with_fail_intercept("permanent_channel_failure", 100, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test_with_fail_intercept("permanent_channel_failure", 100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
}, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
// short_channel_id from the processing node
}, ||{}, true, Some(PERM|8), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));
- run_onion_failure_test_with_fail_intercept("required_channel_feature_missing", 100, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test_with_fail_intercept("required_channel_feature_missing", 100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
}, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let mut bogus_route = route.clone();
bogus_route.paths[0][1].short_channel_id -= 1;
- run_onion_failure_test("unknown_next_peer", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(PERM|10),
+ run_onion_failure_test("unknown_next_peer", 0, &nodes, &bogus_route, &payment_hash, &payment_secret, |_| {}, ||{}, true, Some(PERM|10),
Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: bogus_route.paths[0][1].short_channel_id, is_permanent:true}));
let amt_to_forward = nodes[1].node.channel_state.lock().unwrap().by_id.get(&channels[1].2).unwrap().get_counterparty_htlc_minimum_msat() - 1;
let mut bogus_route = route.clone();
let route_len = bogus_route.paths[0].len();
bogus_route.paths[0][route_len-1].fee_msat = amt_to_forward;
- run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(UPDATE|11), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
+ run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, &payment_secret, |_| {}, ||{}, true, Some(UPDATE|11), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
// Test a positive test-case with one extra msat, meeting the minimum.
bogus_route.paths[0][route_len-1].fee_msat = amt_to_forward + 1;
- let (preimage, _) = send_along_route(&nodes[0], bogus_route, &[&nodes[1], &nodes[2]], amt_to_forward+1);
- claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], preimage, amt_to_forward+1);
+ let (preimage, _, _) = send_along_route(&nodes[0], bogus_route, &[&nodes[1], &nodes[2]], amt_to_forward+1);
+ claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], preimage);
//TODO: with new config API, we will be able to generate both valid and
//invalid channel_update cases.
- run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
}, || {}, true, Some(UPDATE|12), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true}));
- run_onion_failure_test("incorrect_cltv_expiry", 0, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test("incorrect_cltv_expiry", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
// need to violate: cltv_expiry - cltv_expiry_delta >= outgoing_cltv_value
msg.cltv_expiry -= 1;
}, || {}, true, Some(UPDATE|13), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true}));
- run_onion_failure_test("expiry_too_soon", 0, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test("expiry_too_soon", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS + 1;
- let block = Block {
- header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
- txdata: vec![],
- };
-
- connect_block(&nodes[1], &block, height);
+ connect_blocks(&nodes[0], height - nodes[0].best_block_info().1);
+ connect_blocks(&nodes[1], height - nodes[1].best_block_info().1);
+ connect_blocks(&nodes[2], height - nodes[2].best_block_info().1);
}, ||{}, true, Some(UPDATE|14), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
- run_onion_failure_test("unknown_payment_hash", 2, &nodes, &route, &payment_hash, |_| {}, || {
- nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
+ run_onion_failure_test("unknown_payment_hash", 2, &nodes, &route, &payment_hash, &payment_secret, |_| {}, || {
+ nodes[2].node.fail_htlc_backwards(&payment_hash);
}, false, Some(PERM|15), None);
+ let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
- run_onion_failure_test("final_expiry_too_soon", 1, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test("final_expiry_too_soon", 1, &nodes, &route, &payment_hash, &payment_secret, |msg| {
let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS + 1;
- let block = Block {
- header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
- txdata: vec![],
- };
-
- connect_block(&nodes[2], &block, height);
+ connect_blocks(&nodes[0], height - nodes[0].best_block_info().1);
+ connect_blocks(&nodes[1], height - nodes[1].best_block_info().1);
+ connect_blocks(&nodes[2], height - nodes[2].best_block_info().1);
}, || {}, true, Some(17), None);
- run_onion_failure_test("final_incorrect_cltv_expiry", 1, &nodes, &route, &payment_hash, |_| {}, || {
+ run_onion_failure_test("final_incorrect_cltv_expiry", 1, &nodes, &route, &payment_hash, &payment_secret, |_| {}, || {
for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().forward_htlcs.iter_mut() {
for f in pending_forwards.iter_mut() {
match f {
}
}, true, Some(18), None);
- run_onion_failure_test("final_incorrect_htlc_amount", 1, &nodes, &route, &payment_hash, |_| {}, || {
+ run_onion_failure_test("final_incorrect_htlc_amount", 1, &nodes, &route, &payment_hash, &payment_secret, |_| {}, || {
// violate amt_to_forward > msg.amount_msat
for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().forward_htlcs.iter_mut() {
for f in pending_forwards.iter_mut() {
}
}, true, Some(19), None);
- run_onion_failure_test("channel_disabled", 0, &nodes, &route, &payment_hash, |_| {}, || {
+ run_onion_failure_test("channel_disabled", 0, &nodes, &route, &payment_hash, &payment_secret, |_| {}, || {
// disconnect event to the channel between nodes[1] ~ nodes[2]
nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
}, true, Some(UPDATE|20), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
- run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, |msg| {
+ run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let mut route = route.clone();
- let height = 1;
+ let height = nodes[2].best_block_info().1;
route.paths[0][1].cltv_expiry_delta += CLTV_FAR_FAR_AWAY + route.paths[0][0].cltv_expiry_delta + 1;
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
let (onion_payloads, _, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 40000, &None, height).unwrap();