X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Forg%2Fldk%2Fstructs%2FChannelManager.java;h=3136908417b5e22e6539c68a11503583521ea0e3;hb=2bb592fb946e316dba9f4d1123f8ac72ff4e9bf8;hp=734cca5ac3d5257a89dec72ccb1d91cd2cd7deb8;hpb=b0c50b891cbca28d3bd1d86276c132ff5221d8e4;p=ldk-java
diff --git a/src/main/java/org/ldk/structs/ChannelManager.java b/src/main/java/org/ldk/structs/ChannelManager.java
index 734cca5a..31369084 100644
--- a/src/main/java/org/ldk/structs/ChannelManager.java
+++ b/src/main/java/org/ldk/structs/ChannelManager.java
@@ -4,45 +4,65 @@ import org.ldk.impl.bindings;
import org.ldk.enums.*;
import org.ldk.util.*;
import java.util.Arrays;
+import java.lang.ref.Reference;
+import javax.annotation.Nullable;
/**
* Manager which keeps track of a number of channels and sends messages to the appropriate
* channel, also tracking HTLC preimages and forwarding onion packets appropriately.
*
- * Implements ChannelMessageHandler, handling the multi-channel parts and passing things through
+ * Implements [`ChannelMessageHandler`], handling the multi-channel parts and passing things through
* to individual Channels.
*
- * Implements Writeable to write out all channel state to disk. Implies peer_disconnected() for
+ * Implements [`Writeable`] to write out all channel state to disk. Implies [`peer_disconnected`] for
* all peers during write/read (though does not modify this instance, only the instance being
- * serialized). This will result in any channels which have not yet exchanged funding_created (ie
- * called funding_transaction_generated for outbound channels).
+ * serialized). This will result in any channels which have not yet exchanged [`funding_created`] (i.e.,
+ * called [`funding_transaction_generated`] for outbound channels) being closed.
*
- * Note that you can be a bit lazier about writing out ChannelManager than you can be with
- * ChannelMonitors. With ChannelMonitors you MUST write each monitor update out to disk before
- * returning from chain::Watch::watch_/update_channel, with ChannelManagers, writing updates
- * happens out-of-band (and will prevent any other ChannelManager operations from occurring during
- * the serialization process). If the deserialized version is out-of-date compared to the
- * ChannelMonitors passed by reference to read(), those channels will be force-closed based on the
- * ChannelMonitor state and no funds will be lost (mod on-chain transaction fees).
+ * Note that you can be a bit lazier about writing out `ChannelManager` than you can be with
+ * [`ChannelMonitor`]. With [`ChannelMonitor`] you MUST durably write each
+ * [`ChannelMonitorUpdate`] before returning from
+ * [`chain::Watch::watch_channel`]/[`update_channel`] or before completing async writes. With
+ * `ChannelManager`s, writing updates happens out-of-band (and will prevent any other
+ * `ChannelManager` operations from occurring during the serialization process). If the
+ * deserialized version is out-of-date compared to the [`ChannelMonitor`] passed by reference to
+ * [`read`], those channels will be force-closed based on the `ChannelMonitor` state and no funds
+ * will be lost (modulo on-chain transaction fees).
*
- * Note that the deserializer is only implemented for (BlockHash, ChannelManager), which
- * tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along
- * the \"reorg path\" (ie call block_disconnected() until you get to a common block and then call
- * block_connected() to step towards your best block) upon deserialization before using the
- * object!
+ * Note that the deserializer is only implemented for `(`[`BlockHash`]`, `[`ChannelManager`]`)`, which
+ * tells you the last block hash which was connected. You should get the best block tip before using the manager.
+ * See [`chain::Listen`] and [`chain::Confirm`] for more details.
*
- * Note that ChannelManager is responsible for tracking liveness of its channels and generating
- * ChannelUpdate messages informing peers that the channel is temporarily disabled. To avoid
+ * Note that `ChannelManager` is responsible for tracking liveness of its channels and generating
+ * [`ChannelUpdate`] messages informing peers that the channel is temporarily disabled. To avoid
* spam due to quick disconnection/reconnection, updates are not sent until the channel has been
* offline for a full minute. In order to track this, you must call
- * timer_tick_occurred roughly once per minute, though it doesn't have to be perfect.
+ * [`timer_tick_occurred`] roughly once per minute, though it doesn't have to be perfect.
*
- * Rather than using a plain ChannelManager, it is preferable to use either a SimpleArcChannelManager
- * a SimpleRefChannelManager, for conciseness. See their documentation for more details, but
- * essentially you should default to using a SimpleRefChannelManager, and use a
- * SimpleArcChannelManager when you require a ChannelManager with a static lifetime, such as when
+ * To avoid trivial DoS issues, `ChannelManager` limits the number of inbound connections and
+ * inbound channels without confirmed funding transactions. This may result in nodes which we do
+ * not have a channel with being unable to connect to us or open new channels with us if we have
+ * many peers with unfunded channels.
+ *
+ * Because it is an indication of trust, inbound channels which we've accepted as 0conf are
+ * exempted from the count of unfunded channels. Similarly, outbound channels and connections are
+ * never limited. Please ensure you limit the count of such channels yourself.
+ *
+ * Rather than using a plain `ChannelManager`, it is preferable to use either a [`SimpleArcChannelManager`]
+ * a [`SimpleRefChannelManager`], for conciseness. See their documentation for more details, but
+ * essentially you should default to using a [`SimpleRefChannelManager`], and use a
+ * [`SimpleArcChannelManager`] when you require a `ChannelManager` with a static lifetime, such as when
* you're using lightning-net-tokio.
+ *
+ * [`peer_disconnected`]: msgs::ChannelMessageHandler::peer_disconnected
+ * [`funding_created`]: msgs::FundingCreated
+ * [`funding_transaction_generated`]: Self::funding_transaction_generated
+ * [`BlockHash`]: bitcoin::hash_types::BlockHash
+ * [`update_channel`]: chain::Watch::update_channel
+ * [`ChannelUpdate`]: msgs::ChannelUpdate
+ * [`timer_tick_occurred`]: Self::timer_tick_occurred
+ * [`read`]: ReadableArgs::read
*/
@SuppressWarnings("unchecked") // We correctly assign various generic arrays
public class ChannelManager extends CommonBase {
@@ -54,76 +74,130 @@ public class ChannelManager extends CommonBase {
}
/**
- * Constructs a new ChannelManager to hold several channels and route between them.
+ * Constructs a new `ChannelManager` to hold several channels and route between them.
+ *
+ * The current time or latest block header time can be provided as the `current_timestamp`.
*
* This is the main \"logic hub\" for all channel-related actions, and implements
- * ChannelMessageHandler.
+ * [`ChannelMessageHandler`].
*
* Non-proportional fees are fixed according to our risk using the provided fee estimator.
*
- * panics if channel_value_satoshis is >= `MAX_FUNDING_SATOSHIS`!
+ * Users need to notify the new `ChannelManager` when a new block is connected or
+ * disconnected using its [`block_connected`] and [`block_disconnected`] methods, starting
+ * from after [`params.best_block.block_hash`]. See [`chain::Listen`] and [`chain::Confirm`] for
+ * more details.
*
- * Users need to notify the new ChannelManager when a new block is connected or
- * disconnected using its `block_connected` and `block_disconnected` methods, starting
- * from after `params.latest_hash`.
+ * [`block_connected`]: chain::Listen::block_connected
+ * [`block_disconnected`]: chain::Listen::block_disconnected
+ * [`params.best_block.block_hash`]: chain::BestBlock::block_hash
*/
- public static ChannelManager of(FeeEstimator fee_est, Watch chain_monitor, BroadcasterInterface tx_broadcaster, Logger logger, KeysInterface keys_manager, UserConfig config, ChainParameters params) {
- long ret = bindings.ChannelManager_new(fee_est == null ? 0 : fee_est.ptr, chain_monitor == null ? 0 : chain_monitor.ptr, tx_broadcaster == null ? 0 : tx_broadcaster.ptr, logger == null ? 0 : logger.ptr, keys_manager == null ? 0 : keys_manager.ptr, config == null ? 0 : config.ptr & ~1, params == null ? 0 : params.ptr & ~1);
- ChannelManager ret_hu_conv = new ChannelManager(null, ret);
- ret_hu_conv.ptrs_to.add(ret_hu_conv);
- ret_hu_conv.ptrs_to.add(fee_est);
- ret_hu_conv.ptrs_to.add(chain_monitor);
- ret_hu_conv.ptrs_to.add(tx_broadcaster);
- ret_hu_conv.ptrs_to.add(logger);
- ret_hu_conv.ptrs_to.add(keys_manager);
- ret_hu_conv.ptrs_to.add(config);
- ret_hu_conv.ptrs_to.add(params);
+ public static ChannelManager of(org.ldk.structs.FeeEstimator fee_est, org.ldk.structs.Watch chain_monitor, org.ldk.structs.BroadcasterInterface tx_broadcaster, org.ldk.structs.Router router, org.ldk.structs.Logger logger, org.ldk.structs.EntropySource entropy_source, org.ldk.structs.NodeSigner node_signer, org.ldk.structs.SignerProvider signer_provider, org.ldk.structs.UserConfig config, org.ldk.structs.ChainParameters params, int current_timestamp) {
+ long ret = bindings.ChannelManager_new(fee_est.ptr, chain_monitor.ptr, tx_broadcaster.ptr, router.ptr, logger.ptr, entropy_source.ptr, node_signer.ptr, signer_provider.ptr, config == null ? 0 : config.ptr, params == null ? 0 : params.ptr, current_timestamp);
+ Reference.reachabilityFence(fee_est);
+ Reference.reachabilityFence(chain_monitor);
+ Reference.reachabilityFence(tx_broadcaster);
+ Reference.reachabilityFence(router);
+ Reference.reachabilityFence(logger);
+ Reference.reachabilityFence(entropy_source);
+ Reference.reachabilityFence(node_signer);
+ Reference.reachabilityFence(signer_provider);
+ Reference.reachabilityFence(config);
+ Reference.reachabilityFence(params);
+ Reference.reachabilityFence(current_timestamp);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.ChannelManager ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ChannelManager(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(fee_est); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(chain_monitor); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(tx_broadcaster); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(router); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(logger); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(entropy_source); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(node_signer); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(signer_provider); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(config); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(params); };
return ret_hu_conv;
}
/**
- * Gets the current configuration applied to all new channels, as
+ * Gets the current configuration applied to all new channels.
*/
public UserConfig get_current_default_configuration() {
long ret = bindings.ChannelManager_get_current_default_configuration(this.ptr);
- UserConfig ret_hu_conv = new UserConfig(null, ret);
- ret_hu_conv.ptrs_to.add(this);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.UserConfig ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.UserConfig(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
return ret_hu_conv;
}
/**
* Creates a new outbound channel to the given remote node and with the given value.
*
- * user_id will be provided back as user_channel_id in FundingGenerationReady events to allow
- * tracking of which events correspond with which create_channel call. Note that the
- * user_channel_id defaults to 0 for inbound channels, so you may wish to avoid using 0 for
- * user_id here. user_id has no meaning inside of LDK, it is simply copied to events and
- * otherwise ignored.
+ * `user_channel_id` will be provided back as in
+ * [`Event::FundingGenerationReady::user_channel_id`] to allow tracking of which events
+ * correspond with which `create_channel` call. Note that the `user_channel_id` defaults to a
+ * randomized value for inbound channels. `user_channel_id` has no meaning inside of LDK, it
+ * is simply copied to events and otherwise ignored.
+ *
+ * Raises [`APIError::APIMisuseError`] when `channel_value_satoshis` > 2**24 or `push_msat` is
+ * greater than `channel_value_satoshis * 1k` or `channel_value_satoshis < 1000`.
+ *
+ * Raises [`APIError::ChannelUnavailable`] if the channel cannot be opened due to failing to
+ * generate a shutdown scriptpubkey or destination script set by
+ * [`SignerProvider::get_shutdown_scriptpubkey`] or [`SignerProvider::get_destination_script`].
+ *
+ * Note that we do not check if you are currently connected to the given peer. If no
+ * connection is available, the outbound `open_channel` message may fail to send, resulting in
+ * the channel eventually being silently forgotten (dropped on reload).
+ *
+ * If `temporary_channel_id` is specified, it will be used as the temporary channel ID of the
+ * channel. Otherwise, a random one will be generated for you.
+ *
+ * Returns the new Channel's temporary `channel_id`. This ID will appear as
+ * [`Event::FundingGenerationReady::temporary_channel_id`] and in
+ * [`ChannelDetails::channel_id`] until after
+ * [`ChannelManager::funding_transaction_generated`] is called, swapping the Channel's ID for
+ * one derived from the funding transaction's TXID. If the counterparty rejects the channel
+ * immediately, this temporary ID will appear in [`Event::ChannelClosed::channel_id`].
*
- * If successful, will generate a SendOpenChannel message event, so you should probably poll
- * PeerManager::process_events afterwards.
+ * [`Event::FundingGenerationReady::user_channel_id`]: events::Event::FundingGenerationReady::user_channel_id
+ * [`Event::FundingGenerationReady::temporary_channel_id`]: events::Event::FundingGenerationReady::temporary_channel_id
+ * [`Event::ChannelClosed::channel_id`]: events::Event::ChannelClosed::channel_id
*
- * Raises APIError::APIMisuseError when channel_value_satoshis > 2**24 or push_msat is
- * greater than channel_value_satoshis * 1k or channel_value_satoshis is < 1000.
+ * Note that override_config (or a relevant inner pointer) may be NULL or all-0s to represent None
*/
- public Result_NoneAPIErrorZ create_channel(byte[] their_network_key, long channel_value_satoshis, long push_msat, long user_id, UserConfig override_config) {
- long ret = bindings.ChannelManager_create_channel(this.ptr, their_network_key, channel_value_satoshis, push_msat, user_id, override_config == null ? 0 : override_config.ptr & ~1);
- Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
- this.ptrs_to.add(override_config);
+ public Result_ThirtyTwoBytesAPIErrorZ create_channel(byte[] their_network_key, long channel_value_satoshis, long push_msat, org.ldk.util.UInt128 user_channel_id, org.ldk.structs.Option_ThirtyTwoBytesZ temporary_channel_id, @Nullable org.ldk.structs.UserConfig override_config) {
+ long ret = bindings.ChannelManager_create_channel(this.ptr, InternalUtils.check_arr_len(their_network_key, 33), channel_value_satoshis, push_msat, user_channel_id.getLEBytes(), temporary_channel_id.ptr, override_config == null ? 0 : override_config.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(their_network_key);
+ Reference.reachabilityFence(channel_value_satoshis);
+ Reference.reachabilityFence(push_msat);
+ Reference.reachabilityFence(user_channel_id);
+ Reference.reachabilityFence(temporary_channel_id);
+ Reference.reachabilityFence(override_config);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_ThirtyTwoBytesAPIErrorZ ret_hu_conv = Result_ThirtyTwoBytesAPIErrorZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(temporary_channel_id); };
+ if (this != null) { this.ptrs_to.add(override_config); };
return ret_hu_conv;
}
/**
- * Gets the list of open channels, in random order. See ChannelDetail field documentation for
+ * Gets the list of open channels, in random order. See [`ChannelDetails`] field documentation for
* more information.
*/
public ChannelDetails[] list_channels() {
long[] ret = bindings.ChannelManager_list_channels(this.ptr);
- ChannelDetails[] ret_conv_16_arr = new ChannelDetails[ret.length];
- for (int q = 0; q < ret.length; q++) {
+ Reference.reachabilityFence(this);
+ int ret_conv_16_len = ret.length;
+ ChannelDetails[] ret_conv_16_arr = new ChannelDetails[ret_conv_16_len];
+ for (int q = 0; q < ret_conv_16_len; q++) {
long ret_conv_16 = ret[q];
- ChannelDetails ret_conv_16_hu_conv = new ChannelDetails(null, ret_conv_16);
- ret_conv_16_hu_conv.ptrs_to.add(this);
+ org.ldk.structs.ChannelDetails ret_conv_16_hu_conv = null; if (ret_conv_16 < 0 || ret_conv_16 > 4096) { ret_conv_16_hu_conv = new org.ldk.structs.ChannelDetails(null, ret_conv_16); }
+ if (ret_conv_16_hu_conv != null) { ret_conv_16_hu_conv.ptrs_to.add(this); };
ret_conv_16_arr[q] = ret_conv_16_hu_conv;
}
return ret_conv_16_arr;
@@ -131,7 +205,7 @@ public class ChannelManager extends CommonBase {
/**
* Gets the list of usable channels, in random order. Useful as an argument to
- * get_route to ensure non-announced channels are used.
+ * [`Router::find_route`] to ensure non-announced channels are used.
*
* These are guaranteed to have their [`ChannelDetails::is_usable`] value set to true, see the
* documentation for [`ChannelDetails::is_usable`] for more info on exactly what the criteria
@@ -139,35 +213,172 @@ public class ChannelManager extends CommonBase {
*/
public ChannelDetails[] list_usable_channels() {
long[] ret = bindings.ChannelManager_list_usable_channels(this.ptr);
- ChannelDetails[] ret_conv_16_arr = new ChannelDetails[ret.length];
- for (int q = 0; q < ret.length; q++) {
+ Reference.reachabilityFence(this);
+ int ret_conv_16_len = ret.length;
+ ChannelDetails[] ret_conv_16_arr = new ChannelDetails[ret_conv_16_len];
+ for (int q = 0; q < ret_conv_16_len; q++) {
+ long ret_conv_16 = ret[q];
+ org.ldk.structs.ChannelDetails ret_conv_16_hu_conv = null; if (ret_conv_16 < 0 || ret_conv_16 > 4096) { ret_conv_16_hu_conv = new org.ldk.structs.ChannelDetails(null, ret_conv_16); }
+ if (ret_conv_16_hu_conv != null) { ret_conv_16_hu_conv.ptrs_to.add(this); };
+ ret_conv_16_arr[q] = ret_conv_16_hu_conv;
+ }
+ return ret_conv_16_arr;
+ }
+
+ /**
+ * Gets the list of channels we have with a given counterparty, in random order.
+ */
+ public ChannelDetails[] list_channels_with_counterparty(byte[] counterparty_node_id) {
+ long[] ret = bindings.ChannelManager_list_channels_with_counterparty(this.ptr, InternalUtils.check_arr_len(counterparty_node_id, 33));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(counterparty_node_id);
+ int ret_conv_16_len = ret.length;
+ ChannelDetails[] ret_conv_16_arr = new ChannelDetails[ret_conv_16_len];
+ for (int q = 0; q < ret_conv_16_len; q++) {
long ret_conv_16 = ret[q];
- ChannelDetails ret_conv_16_hu_conv = new ChannelDetails(null, ret_conv_16);
- ret_conv_16_hu_conv.ptrs_to.add(this);
+ org.ldk.structs.ChannelDetails ret_conv_16_hu_conv = null; if (ret_conv_16 < 0 || ret_conv_16 > 4096) { ret_conv_16_hu_conv = new org.ldk.structs.ChannelDetails(null, ret_conv_16); }
+ if (ret_conv_16_hu_conv != null) { ret_conv_16_hu_conv.ptrs_to.add(this); };
ret_conv_16_arr[q] = ret_conv_16_hu_conv;
}
return ret_conv_16_arr;
}
+ /**
+ * Returns in an undefined order recent payments that -- if not fulfilled -- have yet to find a
+ * successful path, or have unresolved HTLCs.
+ *
+ * This can be useful for payments that may have been prepared, but ultimately not sent, as a
+ * result of a crash. If such a payment exists, is not listed here, and an
+ * [`Event::PaymentSent`] has not been received, you may consider resending the payment.
+ *
+ * [`Event::PaymentSent`]: events::Event::PaymentSent
+ */
+ public RecentPaymentDetails[] list_recent_payments() {
+ long[] ret = bindings.ChannelManager_list_recent_payments(this.ptr);
+ Reference.reachabilityFence(this);
+ int ret_conv_22_len = ret.length;
+ RecentPaymentDetails[] ret_conv_22_arr = new RecentPaymentDetails[ret_conv_22_len];
+ for (int w = 0; w < ret_conv_22_len; w++) {
+ long ret_conv_22 = ret[w];
+ org.ldk.structs.RecentPaymentDetails ret_conv_22_hu_conv = org.ldk.structs.RecentPaymentDetails.constr_from_ptr(ret_conv_22);
+ if (ret_conv_22_hu_conv != null) { ret_conv_22_hu_conv.ptrs_to.add(this); };
+ ret_conv_22_arr[w] = ret_conv_22_hu_conv;
+ }
+ return ret_conv_22_arr;
+ }
+
+ /**
+ * Begins the process of closing a channel. After this call (plus some timeout), no new HTLCs
+ * will be accepted on the given channel, and after additional timeout/the closing of all
+ * pending HTLCs, the channel will be closed on chain.
+ *
+ * If we are the channel initiator, we will pay between our [`ChannelCloseMinimum`] and
+ * [`ChannelConfig::force_close_avoidance_max_fee_satoshis`] plus our [`NonAnchorChannelFee`]
+ * fee estimate.
+ * If our counterparty is the channel initiator, we will require a channel closing
+ * transaction feerate of at least our [`ChannelCloseMinimum`] feerate or the feerate which
+ * would appear on a force-closure transaction, whichever is lower. We will allow our
+ * counterparty to pay as much fee as they'd like, however.
+ *
+ * May generate a [`SendShutdown`] message event on success, which should be relayed.
+ *
+ * Raises [`APIError::ChannelUnavailable`] if the channel cannot be closed due to failing to
+ * generate a shutdown scriptpubkey or destination script set by
+ * [`SignerProvider::get_shutdown_scriptpubkey`]. A force-closure may be needed to close the
+ * channel.
+ *
+ * [`ChannelConfig::force_close_avoidance_max_fee_satoshis`]: crate::util::config::ChannelConfig::force_close_avoidance_max_fee_satoshis
+ * [`ChannelCloseMinimum`]: crate::chain::chaininterface::ConfirmationTarget::ChannelCloseMinimum
+ * [`NonAnchorChannelFee`]: crate::chain::chaininterface::ConfirmationTarget::NonAnchorChannelFee
+ * [`SendShutdown`]: crate::events::MessageSendEvent::SendShutdown
+ */
+ public Result_NoneAPIErrorZ close_channel(byte[] channel_id, byte[] counterparty_node_id) {
+ long ret = bindings.ChannelManager_close_channel(this.ptr, InternalUtils.check_arr_len(channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(channel_id);
+ Reference.reachabilityFence(counterparty_node_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
/**
* Begins the process of closing a channel. After this call (plus some timeout), no new HTLCs
* will be accepted on the given channel, and after additional timeout/the closing of all
* pending HTLCs, the channel will be closed on chain.
*
- * May generate a SendShutdown message event on success, which should be relayed.
+ * `target_feerate_sat_per_1000_weight` has different meanings depending on if we initiated
+ * the channel being closed or not:
+ * If we are the channel initiator, we will pay at least this feerate on the closing
+ * transaction. The upper-bound is set by
+ * [`ChannelConfig::force_close_avoidance_max_fee_satoshis`] plus our [`NonAnchorChannelFee`]
+ * fee estimate (or `target_feerate_sat_per_1000_weight`, if it is greater).
+ * If our counterparty is the channel initiator, we will refuse to accept a channel closure
+ * transaction feerate below `target_feerate_sat_per_1000_weight` (or the feerate which
+ * will appear on a force-closure transaction, whichever is lower).
+ *
+ * The `shutdown_script` provided will be used as the `scriptPubKey` for the closing transaction.
+ * Will fail if a shutdown script has already been set for this channel by
+ * ['ChannelHandshakeConfig::commit_upfront_shutdown_pubkey`]. The given shutdown script must
+ * also be compatible with our and the counterparty's features.
+ *
+ * May generate a [`SendShutdown`] message event on success, which should be relayed.
+ *
+ * Raises [`APIError::ChannelUnavailable`] if the channel cannot be closed due to failing to
+ * generate a shutdown scriptpubkey or destination script set by
+ * [`SignerProvider::get_shutdown_scriptpubkey`]. A force-closure may be needed to close the
+ * channel.
+ *
+ * [`ChannelConfig::force_close_avoidance_max_fee_satoshis`]: crate::util::config::ChannelConfig::force_close_avoidance_max_fee_satoshis
+ * [`NonAnchorChannelFee`]: crate::chain::chaininterface::ConfirmationTarget::NonAnchorChannelFee
+ * [`SendShutdown`]: crate::events::MessageSendEvent::SendShutdown
+ *
+ * Note that shutdown_script (or a relevant inner pointer) may be NULL or all-0s to represent None
+ */
+ public Result_NoneAPIErrorZ close_channel_with_feerate_and_script(byte[] channel_id, byte[] counterparty_node_id, org.ldk.structs.Option_u32Z target_feerate_sats_per_1000_weight, @Nullable org.ldk.structs.ShutdownScript shutdown_script) {
+ long ret = bindings.ChannelManager_close_channel_with_feerate_and_script(this.ptr, InternalUtils.check_arr_len(channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33), target_feerate_sats_per_1000_weight.ptr, shutdown_script == null ? 0 : shutdown_script.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(channel_id);
+ Reference.reachabilityFence(counterparty_node_id);
+ Reference.reachabilityFence(target_feerate_sats_per_1000_weight);
+ Reference.reachabilityFence(shutdown_script);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(target_feerate_sats_per_1000_weight); };
+ if (this != null) { this.ptrs_to.add(shutdown_script); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Force closes a channel, immediately broadcasting the latest local transaction(s) and
+ * rejecting new HTLCs on the given channel. Fails if `channel_id` is unknown to
+ * the manager, or if the `counterparty_node_id` isn't the counterparty of the corresponding
+ * channel.
*/
- public Result_NoneAPIErrorZ close_channel(byte[] channel_id) {
- long ret = bindings.ChannelManager_close_channel(this.ptr, channel_id);
+ public Result_NoneAPIErrorZ force_close_broadcasting_latest_txn(byte[] channel_id, byte[] counterparty_node_id) {
+ long ret = bindings.ChannelManager_force_close_broadcasting_latest_txn(this.ptr, InternalUtils.check_arr_len(channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(channel_id);
+ Reference.reachabilityFence(counterparty_node_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
return ret_hu_conv;
}
/**
- * Force closes a channel, immediately broadcasting the latest local commitment transaction to
- * the chain and rejecting new HTLCs on the given channel. Fails if channel_id is unknown to the manager.
+ * Force closes a channel, rejecting new HTLCs on the given channel but skips broadcasting
+ * the latest local transaction(s). Fails if `channel_id` is unknown to the manager, or if the
+ * `counterparty_node_id` isn't the counterparty of the corresponding channel.
+ *
+ * You can always get the latest local transaction(s) to broadcast from
+ * [`ChannelMonitor::get_latest_holder_commitment_txn`].
*/
- public Result_NoneAPIErrorZ force_close_channel(byte[] channel_id) {
- long ret = bindings.ChannelManager_force_close_channel(this.ptr, channel_id);
+ public Result_NoneAPIErrorZ force_close_without_broadcasting_txn(byte[] channel_id, byte[] counterparty_node_id) {
+ long ret = bindings.ChannelManager_force_close_without_broadcasting_txn(this.ptr, InternalUtils.check_arr_len(channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(channel_id);
+ Reference.reachabilityFence(counterparty_node_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
return ret_hu_conv;
}
@@ -176,55 +387,257 @@ public class ChannelManager extends CommonBase {
* Force close all channels, immediately broadcasting the latest local commitment transaction
* for each to the chain and rejecting new HTLCs on each.
*/
- public void force_close_all_channels() {
- bindings.ChannelManager_force_close_all_channels(this.ptr);
+ public void force_close_all_channels_broadcasting_latest_txn() {
+ bindings.ChannelManager_force_close_all_channels_broadcasting_latest_txn(this.ptr);
+ Reference.reachabilityFence(this);
+ }
+
+ /**
+ * Force close all channels rejecting new HTLCs on each but without broadcasting the latest
+ * local transaction(s).
+ */
+ public void force_close_all_channels_without_broadcasting_txn() {
+ bindings.ChannelManager_force_close_all_channels_without_broadcasting_txn(this.ptr);
+ Reference.reachabilityFence(this);
}
/**
* Sends a payment along a given route.
*
- * Value parameters are provided via the last hop in route, see documentation for RouteHop
+ * Value parameters are provided via the last hop in route, see documentation for [`RouteHop`]
* fields for more info.
*
- * Note that if the payment_hash already exists elsewhere (eg you're sending a duplicative
- * payment), we don't do anything to stop you! We always try to ensure that if the provided
- * next hop knows the preimage to payment_hash they can claim an additional amount as
- * specified in the last hop in the route! Thus, you should probably do your own
- * payment_preimage tracking (which you should already be doing as they represent \"proof of
- * payment\") and prevent double-sends yourself.
+ * May generate [`UpdateHTLCs`] message(s) event on success, which should be relayed (e.g. via
+ * [`PeerManager::process_events`]).
*
- * May generate SendHTLCs message(s) event on success, which should be relayed.
+ * # Avoiding Duplicate Payments
*
- * Each path may have a different return value, and PaymentSendValue may return a Vec with
+ * If a pending payment is currently in-flight with the same [`PaymentId`] provided, this
+ * method will error with an [`APIError::InvalidRoute`]. Note, however, that once a payment
+ * is no longer pending (either via [`ChannelManager::abandon_payment`], or handling of an
+ * [`Event::PaymentSent`] or [`Event::PaymentFailed`]) LDK will not stop you from sending a
+ * second payment with the same [`PaymentId`].
+ *
+ * Thus, in order to ensure duplicate payments are not sent, you should implement your own
+ * tracking of payments, including state to indicate once a payment has completed. Because you
+ * should also ensure that [`PaymentHash`]es are not re-used, for simplicity, you should
+ * consider using the [`PaymentHash`] as the key for tracking payments. In that case, the
+ * [`PaymentId`] should be a copy of the [`PaymentHash`] bytes.
+ *
+ * Additionally, in the scenario where we begin the process of sending a payment, but crash
+ * before `send_payment` returns (or prior to [`ChannelMonitorUpdate`] persistence if you're
+ * using [`ChannelMonitorUpdateStatus::InProgress`]), the payment may be lost on restart. See
+ * [`ChannelManager::list_recent_payments`] for more information.
+ *
+ * # Possible Error States on [`PaymentSendFailure`]
+ *
+ * Each path may have a different return value, and [`PaymentSendFailure`] may return a `Vec` with
* each entry matching the corresponding-index entry in the route paths, see
- * PaymentSendFailure for more info.
+ * [`PaymentSendFailure`] for more info.
*
* In general, a path may raise:
- * APIError::RouteError when an invalid route or forwarding parameter (cltv_delta, fee,
+ * [`APIError::InvalidRoute`] when an invalid route or forwarding parameter (cltv_delta, fee,
* node public key) is specified.
- * APIError::ChannelUnavailable if the next-hop channel is not available for updates
- * (including due to previous monitor update failure or new permanent monitor update
- * failure).
- * APIError::MonitorUpdateFailed if a new monitor update failure prevented sending the
+ * [`APIError::ChannelUnavailable`] if the next-hop channel is not available as it has been
+ * closed, doesn't exist, or the peer is currently disconnected.
+ * [`APIError::MonitorUpdateInProgress`] if a new monitor update failure prevented sending the
* relevant updates.
*
- * Note that depending on the type of the PaymentSendFailure the HTLC may have been
+ * Note that depending on the type of the [`PaymentSendFailure`] the HTLC may have been
* irrevocably committed to on our end. In such a case, do NOT retry the payment with a
* different route unless you intend to pay twice!
*
- * payment_secret is unrelated to payment_hash (or PaymentPreimage) and exists to authenticate
- * the sender to the recipient and prevent payment-probing (deanonymization) attacks. For
- * newer nodes, it will be provided to you in the invoice. If you do not have one, the Route
- * must not contain multiple paths as multi-path payments require a recipient-provided
- * payment_secret.
- * If a payment_secret *is* provided, we assume that the invoice had the payment_secret feature
- * bit set (either as required or as available). If multiple paths are present in the Route,
- * we assume the invoice had the basic_mpp feature set.
- */
- public Result_NonePaymentSendFailureZ send_payment(Route route, byte[] payment_hash, byte[] payment_secret) {
- long ret = bindings.ChannelManager_send_payment(this.ptr, route == null ? 0 : route.ptr & ~1, payment_hash, payment_secret);
+ * [`RouteHop`]: crate::routing::router::RouteHop
+ * [`Event::PaymentSent`]: events::Event::PaymentSent
+ * [`Event::PaymentFailed`]: events::Event::PaymentFailed
+ * [`UpdateHTLCs`]: events::MessageSendEvent::UpdateHTLCs
+ * [`PeerManager::process_events`]: crate::ln::peer_handler::PeerManager::process_events
+ * [`ChannelMonitorUpdateStatus::InProgress`]: crate::chain::ChannelMonitorUpdateStatus::InProgress
+ */
+ public Result_NonePaymentSendFailureZ send_payment_with_route(org.ldk.structs.Route route, byte[] payment_hash, org.ldk.structs.RecipientOnionFields recipient_onion, byte[] payment_id) {
+ long ret = bindings.ChannelManager_send_payment_with_route(this.ptr, route == null ? 0 : route.ptr, InternalUtils.check_arr_len(payment_hash, 32), recipient_onion == null ? 0 : recipient_onion.ptr, InternalUtils.check_arr_len(payment_id, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(route);
+ Reference.reachabilityFence(payment_hash);
+ Reference.reachabilityFence(recipient_onion);
+ Reference.reachabilityFence(payment_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
Result_NonePaymentSendFailureZ ret_hu_conv = Result_NonePaymentSendFailureZ.constr_from_ptr(ret);
- this.ptrs_to.add(route);
+ if (this != null) { this.ptrs_to.add(route); };
+ if (this != null) { this.ptrs_to.add(recipient_onion); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Similar to [`ChannelManager::send_payment_with_route`], but will automatically find a route based on
+ * `route_params` and retry failed payment paths based on `retry_strategy`.
+ */
+ public Result_NoneRetryableSendFailureZ send_payment(byte[] payment_hash, org.ldk.structs.RecipientOnionFields recipient_onion, byte[] payment_id, org.ldk.structs.RouteParameters route_params, org.ldk.structs.Retry retry_strategy) {
+ long ret = bindings.ChannelManager_send_payment(this.ptr, InternalUtils.check_arr_len(payment_hash, 32), recipient_onion == null ? 0 : recipient_onion.ptr, InternalUtils.check_arr_len(payment_id, 32), route_params == null ? 0 : route_params.ptr, retry_strategy.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_hash);
+ Reference.reachabilityFence(recipient_onion);
+ Reference.reachabilityFence(payment_id);
+ Reference.reachabilityFence(route_params);
+ Reference.reachabilityFence(retry_strategy);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneRetryableSendFailureZ ret_hu_conv = Result_NoneRetryableSendFailureZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(recipient_onion); };
+ if (this != null) { this.ptrs_to.add(route_params); };
+ if (this != null) { this.ptrs_to.add(retry_strategy); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Signals that no further attempts for the given payment should occur. Useful if you have a
+ * pending outbound payment with retries remaining, but wish to stop retrying the payment before
+ * retries are exhausted.
+ *
+ * # Event Generation
+ *
+ * If no [`Event::PaymentFailed`] event had been generated before, one will be generated as soon
+ * as there are no remaining pending HTLCs for this payment.
+ *
+ * Note that calling this method does *not* prevent a payment from succeeding. You must still
+ * wait until you receive either a [`Event::PaymentFailed`] or [`Event::PaymentSent`] event to
+ * determine the ultimate status of a payment.
+ *
+ * # Requested Invoices
+ *
+ * In the case of paying a [`Bolt12Invoice`] via [`ChannelManager::pay_for_offer`], abandoning
+ * the payment prior to receiving the invoice will result in an [`Event::InvoiceRequestFailed`]
+ * and prevent any attempts at paying it once received. The other events may only be generated
+ * once the invoice has been received.
+ *
+ * # Restart Behavior
+ *
+ * If an [`Event::PaymentFailed`] is generated and we restart without first persisting the
+ * [`ChannelManager`], another [`Event::PaymentFailed`] may be generated; likewise for
+ * [`Event::InvoiceRequestFailed`].
+ *
+ * [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
+ */
+ public void abandon_payment(byte[] payment_id) {
+ bindings.ChannelManager_abandon_payment(this.ptr, InternalUtils.check_arr_len(payment_id, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_id);
+ }
+
+ /**
+ * Send a spontaneous payment, which is a payment that does not require the recipient to have
+ * generated an invoice. Optionally, you may specify the preimage. If you do choose to specify
+ * the preimage, it must be a cryptographically secure random value that no intermediate node
+ * would be able to guess -- otherwise, an intermediate node may claim the payment and it will
+ * never reach the recipient.
+ *
+ * See [`send_payment`] documentation for more details on the return value of this function
+ * and idempotency guarantees provided by the [`PaymentId`] key.
+ *
+ * Similar to regular payments, you MUST NOT reuse a `payment_preimage` value. See
+ * [`send_payment`] for more information about the risks of duplicate preimage usage.
+ *
+ * [`send_payment`]: Self::send_payment
+ */
+ public Result_ThirtyTwoBytesPaymentSendFailureZ send_spontaneous_payment(org.ldk.structs.Route route, org.ldk.structs.Option_ThirtyTwoBytesZ payment_preimage, org.ldk.structs.RecipientOnionFields recipient_onion, byte[] payment_id) {
+ long ret = bindings.ChannelManager_send_spontaneous_payment(this.ptr, route == null ? 0 : route.ptr, payment_preimage.ptr, recipient_onion == null ? 0 : recipient_onion.ptr, InternalUtils.check_arr_len(payment_id, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(route);
+ Reference.reachabilityFence(payment_preimage);
+ Reference.reachabilityFence(recipient_onion);
+ Reference.reachabilityFence(payment_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_ThirtyTwoBytesPaymentSendFailureZ ret_hu_conv = Result_ThirtyTwoBytesPaymentSendFailureZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(route); };
+ if (this != null) { this.ptrs_to.add(payment_preimage); };
+ if (this != null) { this.ptrs_to.add(recipient_onion); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Similar to [`ChannelManager::send_spontaneous_payment`], but will automatically find a route
+ * based on `route_params` and retry failed payment paths based on `retry_strategy`.
+ *
+ * See [`PaymentParameters::for_keysend`] for help in constructing `route_params` for spontaneous
+ * payments.
+ *
+ * [`PaymentParameters::for_keysend`]: crate::routing::router::PaymentParameters::for_keysend
+ */
+ public Result_ThirtyTwoBytesRetryableSendFailureZ send_spontaneous_payment_with_retry(org.ldk.structs.Option_ThirtyTwoBytesZ payment_preimage, org.ldk.structs.RecipientOnionFields recipient_onion, byte[] payment_id, org.ldk.structs.RouteParameters route_params, org.ldk.structs.Retry retry_strategy) {
+ long ret = bindings.ChannelManager_send_spontaneous_payment_with_retry(this.ptr, payment_preimage.ptr, recipient_onion == null ? 0 : recipient_onion.ptr, InternalUtils.check_arr_len(payment_id, 32), route_params == null ? 0 : route_params.ptr, retry_strategy.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_preimage);
+ Reference.reachabilityFence(recipient_onion);
+ Reference.reachabilityFence(payment_id);
+ Reference.reachabilityFence(route_params);
+ Reference.reachabilityFence(retry_strategy);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_ThirtyTwoBytesRetryableSendFailureZ ret_hu_conv = Result_ThirtyTwoBytesRetryableSendFailureZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(payment_preimage); };
+ if (this != null) { this.ptrs_to.add(recipient_onion); };
+ if (this != null) { this.ptrs_to.add(route_params); };
+ if (this != null) { this.ptrs_to.add(retry_strategy); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Send a payment that is probing the given route for liquidity. We calculate the
+ * [`PaymentHash`] of probes based on a static secret and a random [`PaymentId`], which allows
+ * us to easily discern them from real payments.
+ */
+ public Result_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZPaymentSendFailureZ send_probe(org.ldk.structs.Path path) {
+ long ret = bindings.ChannelManager_send_probe(this.ptr, path == null ? 0 : path.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(path);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZPaymentSendFailureZ ret_hu_conv = Result_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZPaymentSendFailureZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(path); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Sends payment probes over all paths of a route that would be used to pay the given
+ * amount to the given `node_id`.
+ *
+ * See [`ChannelManager::send_preflight_probes`] for more information.
+ */
+ public Result_CVec_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZZProbeSendFailureZ send_spontaneous_preflight_probes(byte[] node_id, long amount_msat, int final_cltv_expiry_delta, org.ldk.structs.Option_u64Z liquidity_limit_multiplier) {
+ long ret = bindings.ChannelManager_send_spontaneous_preflight_probes(this.ptr, InternalUtils.check_arr_len(node_id, 33), amount_msat, final_cltv_expiry_delta, liquidity_limit_multiplier.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(node_id);
+ Reference.reachabilityFence(amount_msat);
+ Reference.reachabilityFence(final_cltv_expiry_delta);
+ Reference.reachabilityFence(liquidity_limit_multiplier);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_CVec_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZZProbeSendFailureZ ret_hu_conv = Result_CVec_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZZProbeSendFailureZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(liquidity_limit_multiplier); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Sends payment probes over all paths of a route that would be used to pay a route found
+ * according to the given [`RouteParameters`].
+ *
+ * This may be used to send \"pre-flight\" probes, i.e., to train our scorer before conducting
+ * the actual payment. Note this is only useful if there likely is sufficient time for the
+ * probe to settle before sending out the actual payment, e.g., when waiting for user
+ * confirmation in a wallet UI.
+ *
+ * Otherwise, there is a chance the probe could take up some liquidity needed to complete the
+ * actual payment. Users should therefore be cautious and might avoid sending probes if
+ * liquidity is scarce and/or they don't expect the probe to return before they send the
+ * payment. To mitigate this issue, channels with available liquidity less than the required
+ * amount times the given `liquidity_limit_multiplier` won't be used to send pre-flight
+ * probes. If `None` is given as `liquidity_limit_multiplier`, it defaults to `3`.
+ */
+ public Result_CVec_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZZProbeSendFailureZ send_preflight_probes(org.ldk.structs.RouteParameters route_params, org.ldk.structs.Option_u64Z liquidity_limit_multiplier) {
+ long ret = bindings.ChannelManager_send_preflight_probes(this.ptr, route_params == null ? 0 : route_params.ptr, liquidity_limit_multiplier.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(route_params);
+ Reference.reachabilityFence(liquidity_limit_multiplier);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_CVec_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZZProbeSendFailureZ ret_hu_conv = Result_CVec_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZZProbeSendFailureZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(route_params); };
+ if (this != null) { this.ptrs_to.add(liquidity_limit_multiplier); };
return ret_hu_conv;
}
@@ -234,7 +647,11 @@ public class ChannelManager extends CommonBase {
* Returns an [`APIError::APIMisuseError`] if the funding_transaction spent non-SegWit outputs
* or if no output was found which matches the parameters in [`Event::FundingGenerationReady`].
*
- * Panics if a funding transaction has already been provided for this channel.
+ * Returns [`APIError::APIMisuseError`] if the funding transaction is not final for propagation
+ * across the p2p network.
+ *
+ * Returns [`APIError::ChannelUnavailable`] if a funding transaction has already been provided
+ * for the channel or if the channel has been closed as indicated by [`Event::ChannelClosed`].
*
* May panic if the output found in the funding transaction is duplicative with some other
* channel (note that this should be trivially prevented by using unique funding transaction
@@ -248,37 +665,172 @@ public class ChannelManager extends CommonBase {
* not currently support replacing a funding transaction on an existing channel. Instead,
* create a new channel with a conflicting funding transaction.
*
- * [`Event::FundingGenerationReady`]: crate::util::events::Event::FundingGenerationReady
+ * Note to keep the miner incentives aligned in moving the blockchain forward, we recommend
+ * the wallet software generating the funding transaction to apply anti-fee sniping as
+ * implemented by Bitcoin Core wallet. See
+ * for more details.
+ *
+ * [`Event::FundingGenerationReady`]: crate::events::Event::FundingGenerationReady
+ * [`Event::ChannelClosed`]: crate::events::Event::ChannelClosed
+ */
+ public Result_NoneAPIErrorZ funding_transaction_generated(byte[] temporary_channel_id, byte[] counterparty_node_id, byte[] funding_transaction) {
+ long ret = bindings.ChannelManager_funding_transaction_generated(this.ptr, InternalUtils.check_arr_len(temporary_channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33), funding_transaction);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(temporary_channel_id);
+ Reference.reachabilityFence(counterparty_node_id);
+ Reference.reachabilityFence(funding_transaction);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Call this upon creation of a batch funding transaction for the given channels.
+ *
+ * Return values are identical to [`Self::funding_transaction_generated`], respective to
+ * each individual channel and transaction output.
+ *
+ * Do NOT broadcast the funding transaction yourself. This batch funding transaction
+ * will only be broadcast when we have safely received and persisted the counterparty's
+ * signature for each channel.
+ *
+ * If there is an error, all channels in the batch are to be considered closed.
+ */
+ public Result_NoneAPIErrorZ batch_funding_transaction_generated(TwoTuple_ThirtyTwoBytesPublicKeyZ[] temporary_channels, byte[] funding_transaction) {
+ long ret = bindings.ChannelManager_batch_funding_transaction_generated(this.ptr, temporary_channels != null ? Arrays.stream(temporary_channels).mapToLong(temporary_channels_conv_35 -> temporary_channels_conv_35 != null ? temporary_channels_conv_35.ptr : 0).toArray() : null, funding_transaction);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(temporary_channels);
+ Reference.reachabilityFence(funding_transaction);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Atomically applies partial updates to the [`ChannelConfig`] of the given channels.
+ *
+ * Once the updates are applied, each eligible channel (advertised with a known short channel
+ * ID and a change in [`forwarding_fee_proportional_millionths`], [`forwarding_fee_base_msat`],
+ * or [`cltv_expiry_delta`]) has a [`BroadcastChannelUpdate`] event message generated
+ * containing the new [`ChannelUpdate`] message which should be broadcast to the network.
+ *
+ * Returns [`ChannelUnavailable`] when a channel is not found or an incorrect
+ * `counterparty_node_id` is provided.
+ *
+ * Returns [`APIMisuseError`] when a [`cltv_expiry_delta`] update is to be applied with a value
+ * below [`MIN_CLTV_EXPIRY_DELTA`].
+ *
+ * If an error is returned, none of the updates should be considered applied.
+ *
+ * [`forwarding_fee_proportional_millionths`]: ChannelConfig::forwarding_fee_proportional_millionths
+ * [`forwarding_fee_base_msat`]: ChannelConfig::forwarding_fee_base_msat
+ * [`cltv_expiry_delta`]: ChannelConfig::cltv_expiry_delta
+ * [`BroadcastChannelUpdate`]: events::MessageSendEvent::BroadcastChannelUpdate
+ * [`ChannelUpdate`]: msgs::ChannelUpdate
+ * [`ChannelUnavailable`]: APIError::ChannelUnavailable
+ * [`APIMisuseError`]: APIError::APIMisuseError
*/
- public Result_NoneAPIErrorZ funding_transaction_generated(byte[] temporary_channel_id, byte[] funding_transaction) {
- long ret = bindings.ChannelManager_funding_transaction_generated(this.ptr, temporary_channel_id, funding_transaction);
+ public Result_NoneAPIErrorZ update_partial_channel_config(byte[] counterparty_node_id, byte[][] channel_ids, org.ldk.structs.ChannelConfigUpdate config_update) {
+ long ret = bindings.ChannelManager_update_partial_channel_config(this.ptr, InternalUtils.check_arr_len(counterparty_node_id, 33), channel_ids != null ? Arrays.stream(channel_ids).map(channel_ids_conv_8 -> InternalUtils.check_arr_len(channel_ids_conv_8, 32)).toArray(byte[][]::new) : null, config_update == null ? 0 : config_update.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(counterparty_node_id);
+ Reference.reachabilityFence(channel_ids);
+ Reference.reachabilityFence(config_update);
+ if (ret >= 0 && ret <= 4096) { return null; }
Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(config_update); };
return ret_hu_conv;
}
/**
- * Regenerates channel_announcements and generates a signed node_announcement from the given
- * arguments, providing them in corresponding events via
- * [`get_and_clear_pending_msg_events`], if at least one public channel has been confirmed
- * on-chain. This effectively re-broadcasts all channel announcements and sends our node
- * announcement to ensure that the lightning P2P network is aware of the channels we have and
- * our network addresses.
+ * Atomically updates the [`ChannelConfig`] for the given channels.
*
- * `rgb` is a node \"color\" and `alias` is a printable human-readable string to describe this
- * node to humans. They carry no in-protocol meaning.
+ * Once the updates are applied, each eligible channel (advertised with a known short channel
+ * ID and a change in [`forwarding_fee_proportional_millionths`], [`forwarding_fee_base_msat`],
+ * or [`cltv_expiry_delta`]) has a [`BroadcastChannelUpdate`] event message generated
+ * containing the new [`ChannelUpdate`] message which should be broadcast to the network.
*
- * `addresses` represent the set (possibly empty) of socket addresses on which this node
- * accepts incoming connections. These will be included in the node_announcement, publicly
- * tying these addresses together and to this node. If you wish to preserve user privacy,
- * addresses should likely contain only Tor Onion addresses.
+ * Returns [`ChannelUnavailable`] when a channel is not found or an incorrect
+ * `counterparty_node_id` is provided.
*
- * Panics if `addresses` is absurdly large (more than 500).
+ * Returns [`APIMisuseError`] when a [`cltv_expiry_delta`] update is to be applied with a value
+ * below [`MIN_CLTV_EXPIRY_DELTA`].
*
- * [`get_and_clear_pending_msg_events`]: MessageSendEventsProvider::get_and_clear_pending_msg_events
+ * If an error is returned, none of the updates should be considered applied.
+ *
+ * [`forwarding_fee_proportional_millionths`]: ChannelConfig::forwarding_fee_proportional_millionths
+ * [`forwarding_fee_base_msat`]: ChannelConfig::forwarding_fee_base_msat
+ * [`cltv_expiry_delta`]: ChannelConfig::cltv_expiry_delta
+ * [`BroadcastChannelUpdate`]: events::MessageSendEvent::BroadcastChannelUpdate
+ * [`ChannelUpdate`]: msgs::ChannelUpdate
+ * [`ChannelUnavailable`]: APIError::ChannelUnavailable
+ * [`APIMisuseError`]: APIError::APIMisuseError
*/
- public void broadcast_node_announcement(byte[] rgb, byte[] alias, NetAddress[] addresses) {
- bindings.ChannelManager_broadcast_node_announcement(this.ptr, rgb, alias, Arrays.stream(addresses).mapToLong(addresses_conv_12 -> addresses_conv_12.ptr).toArray());
- /* TODO 2 NetAddress */;
+ public Result_NoneAPIErrorZ update_channel_config(byte[] counterparty_node_id, byte[][] channel_ids, org.ldk.structs.ChannelConfig config) {
+ long ret = bindings.ChannelManager_update_channel_config(this.ptr, InternalUtils.check_arr_len(counterparty_node_id, 33), channel_ids != null ? Arrays.stream(channel_ids).map(channel_ids_conv_8 -> InternalUtils.check_arr_len(channel_ids_conv_8, 32)).toArray(byte[][]::new) : null, config == null ? 0 : config.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(counterparty_node_id);
+ Reference.reachabilityFence(channel_ids);
+ Reference.reachabilityFence(config);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(config); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Attempts to forward an intercepted HTLC over the provided channel id and with the provided
+ * amount to forward. Should only be called in response to an [`HTLCIntercepted`] event.
+ *
+ * Intercepted HTLCs can be useful for Lightning Service Providers (LSPs) to open a just-in-time
+ * channel to a receiving node if the node lacks sufficient inbound liquidity.
+ *
+ * To make use of intercepted HTLCs, set [`UserConfig::accept_intercept_htlcs`] and use
+ * [`ChannelManager::get_intercept_scid`] to generate short channel id(s) to put in the
+ * receiver's invoice route hints. These route hints will signal to LDK to generate an
+ * [`HTLCIntercepted`] event when it receives the forwarded HTLC, and this method or
+ * [`ChannelManager::fail_intercepted_htlc`] MUST be called in response to the event.
+ *
+ * Note that LDK does not enforce fee requirements in `amt_to_forward_msat`, and will not stop
+ * you from forwarding more than you received. See
+ * [`HTLCIntercepted::expected_outbound_amount_msat`] for more on forwarding a different amount
+ * than expected.
+ *
+ * Errors if the event was not handled in time, in which case the HTLC was automatically failed
+ * backwards.
+ *
+ * [`UserConfig::accept_intercept_htlcs`]: crate::util::config::UserConfig::accept_intercept_htlcs
+ * [`HTLCIntercepted`]: events::Event::HTLCIntercepted
+ * [`HTLCIntercepted::expected_outbound_amount_msat`]: events::Event::HTLCIntercepted::expected_outbound_amount_msat
+ */
+ public Result_NoneAPIErrorZ forward_intercepted_htlc(byte[] intercept_id, byte[] next_hop_channel_id, byte[] next_node_id, long amt_to_forward_msat) {
+ long ret = bindings.ChannelManager_forward_intercepted_htlc(this.ptr, InternalUtils.check_arr_len(intercept_id, 32), InternalUtils.check_arr_len(next_hop_channel_id, 32), InternalUtils.check_arr_len(next_node_id, 33), amt_to_forward_msat);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(intercept_id);
+ Reference.reachabilityFence(next_hop_channel_id);
+ Reference.reachabilityFence(next_node_id);
+ Reference.reachabilityFence(amt_to_forward_msat);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Fails the intercepted HTLC indicated by intercept_id. Should only be called in response to
+ * an [`HTLCIntercepted`] event. See [`ChannelManager::forward_intercepted_htlc`].
+ *
+ * Errors if the event was not handled in time, in which case the HTLC was automatically failed
+ * backwards.
+ *
+ * [`HTLCIntercepted`]: events::Event::HTLCIntercepted
+ */
+ public Result_NoneAPIErrorZ fail_intercepted_htlc(byte[] intercept_id) {
+ long ret = bindings.ChannelManager_fail_intercepted_htlc(this.ptr, InternalUtils.check_arr_len(intercept_id, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(intercept_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
}
/**
@@ -289,51 +841,119 @@ public class ChannelManager extends CommonBase {
*/
public void process_pending_htlc_forwards() {
bindings.ChannelManager_process_pending_htlc_forwards(this.ptr);
+ Reference.reachabilityFence(this);
}
/**
- * If a peer is disconnected we mark any channels with that peer as 'disabled'.
- * After some time, if channels are still disabled we need to broadcast a ChannelUpdate
- * to inform the network about the uselessness of these channels.
+ * Performs actions which should happen on startup and roughly once per minute thereafter.
*
- * This method handles all the details, and must be called roughly once per minute.
+ * This currently includes:
+ * Increasing or decreasing the on-chain feerate estimates for our outbound channels,
+ * Broadcasting [`ChannelUpdate`] messages if we've been disconnected from our peer for more
+ * than a minute, informing the network that they should no longer attempt to route over
+ * the channel.
+ * Expiring a channel's previous [`ChannelConfig`] if necessary to only allow forwarding HTLCs
+ * with the current [`ChannelConfig`].
+ * Removing peers which have disconnected but and no longer have any channels.
+ * Force-closing and removing channels which have not completed establishment in a timely manner.
+ * Forgetting about stale outbound payments, either those that have already been fulfilled
+ * or those awaiting an invoice that hasn't been delivered in the necessary amount of time.
+ * The latter is determined using the system clock in `std` and the highest seen block time
+ * minus two hours in `no-std`.
*
- * Note that in some rare cases this may generate a `chain::Watch::update_channel` call.
+ * Note that this may cause reentrancy through [`chain::Watch::update_channel`] calls or feerate
+ * estimate fetches.
+ *
+ * [`ChannelUpdate`]: msgs::ChannelUpdate
+ * [`ChannelConfig`]: crate::util::config::ChannelConfig
*/
public void timer_tick_occurred() {
bindings.ChannelManager_timer_tick_occurred(this.ptr);
+ Reference.reachabilityFence(this);
}
/**
* Indicates that the preimage for payment_hash is unknown or the received amount is incorrect
- * after a PaymentReceived event, failing the HTLC back to its origin and freeing resources
+ * after a PaymentClaimable event, failing the HTLC back to its origin and freeing resources
* along the path (including in our own channel on which we received it).
- * Returns false if no payment was found to fail backwards, true if the process of failing the
- * HTLC backwards has been started.
+ *
+ * Note that in some cases around unclean shutdown, it is possible the payment may have
+ * already been claimed by you via [`ChannelManager::claim_funds`] prior to you seeing (a
+ * second copy of) the [`events::Event::PaymentClaimable`] event. Alternatively, the payment
+ * may have already been failed automatically by LDK if it was nearing its expiration time.
+ *
+ * While LDK will never claim a payment automatically on your behalf (i.e. without you calling
+ * [`ChannelManager::claim_funds`]), you should still monitor for
+ * [`events::Event::PaymentClaimed`] events even for payments you intend to fail, especially on
+ * startup during which time claims that were in-progress at shutdown may be replayed.
*/
- public boolean fail_htlc_backwards(byte[] payment_hash) {
- boolean ret = bindings.ChannelManager_fail_htlc_backwards(this.ptr, payment_hash);
- return ret;
+ public void fail_htlc_backwards(byte[] payment_hash) {
+ bindings.ChannelManager_fail_htlc_backwards(this.ptr, InternalUtils.check_arr_len(payment_hash, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_hash);
+ }
+
+ /**
+ * This is a variant of [`ChannelManager::fail_htlc_backwards`] that allows you to specify the
+ * reason for the failure.
+ *
+ * See [`FailureCode`] for valid failure codes.
+ */
+ public void fail_htlc_backwards_with_reason(byte[] payment_hash, org.ldk.structs.FailureCode failure_code) {
+ bindings.ChannelManager_fail_htlc_backwards_with_reason(this.ptr, InternalUtils.check_arr_len(payment_hash, 32), failure_code.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_hash);
+ Reference.reachabilityFence(failure_code);
+ if (this != null) { this.ptrs_to.add(failure_code); };
}
/**
- * Provides a payment preimage in response to a PaymentReceived event, returning true and
- * generating message events for the net layer to claim the payment, if possible. Thus, you
- * should probably kick the net layer to go send messages if this returns true!
+ * Provides a payment preimage in response to [`Event::PaymentClaimable`], generating any
+ * [`MessageSendEvent`]s needed to claim the payment.
+ *
+ * This method is guaranteed to ensure the payment has been claimed but only if the current
+ * height is strictly below [`Event::PaymentClaimable::claim_deadline`]. To avoid race
+ * conditions, you should wait for an [`Event::PaymentClaimed`] before considering the payment
+ * successful. It will generally be available in the next [`process_pending_events`] call.
*
* Note that if you did not set an `amount_msat` when calling [`create_inbound_payment`] or
- * [`create_inbound_payment_for_hash`] you must check that the amount in the `PaymentReceived`
+ * [`create_inbound_payment_for_hash`] you must check that the amount in the `PaymentClaimable`
* event matches your expectation. If you fail to do so and call this method, you may provide
* the sender \"proof-of-payment\" when they did not fulfill the full expected payment.
*
- * May panic if called except in response to a PaymentReceived event.
+ * This function will fail the payment if it has custom TLVs with even type numbers, as we
+ * will assume they are unknown. If you intend to accept even custom TLVs, you should use
+ * [`claim_funds_with_known_custom_tlvs`].
*
+ * [`Event::PaymentClaimable`]: crate::events::Event::PaymentClaimable
+ * [`Event::PaymentClaimable::claim_deadline`]: crate::events::Event::PaymentClaimable::claim_deadline
+ * [`Event::PaymentClaimed`]: crate::events::Event::PaymentClaimed
+ * [`process_pending_events`]: EventsProvider::process_pending_events
* [`create_inbound_payment`]: Self::create_inbound_payment
* [`create_inbound_payment_for_hash`]: Self::create_inbound_payment_for_hash
+ * [`claim_funds_with_known_custom_tlvs`]: Self::claim_funds_with_known_custom_tlvs
*/
- public boolean claim_funds(byte[] payment_preimage) {
- boolean ret = bindings.ChannelManager_claim_funds(this.ptr, payment_preimage);
- return ret;
+ public void claim_funds(byte[] payment_preimage) {
+ bindings.ChannelManager_claim_funds(this.ptr, InternalUtils.check_arr_len(payment_preimage, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_preimage);
+ }
+
+ /**
+ * This is a variant of [`claim_funds`] that allows accepting a payment with custom TLVs with
+ * even type numbers.
+ *
+ * # Note
+ *
+ * You MUST check you've understood all even TLVs before using this to
+ * claim, otherwise you may unintentionally agree to some protocol you do not understand.
+ *
+ * [`claim_funds`]: Self::claim_funds
+ */
+ public void claim_funds_with_known_custom_tlvs(byte[] payment_preimage) {
+ bindings.ChannelManager_claim_funds_with_known_custom_tlvs(this.ptr, InternalUtils.check_arr_len(payment_preimage, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_preimage);
}
/**
@@ -341,34 +961,176 @@ public class ChannelManager extends CommonBase {
*/
public byte[] get_our_node_id() {
byte[] ret = bindings.ChannelManager_get_our_node_id(this.ptr);
+ Reference.reachabilityFence(this);
return ret;
}
/**
- * Restores a single, given channel to normal operation after a
- * ChannelMonitorUpdateErr::TemporaryFailure was returned from a channel monitor update
- * operation.
+ * Accepts a request to open a channel after a [`Event::OpenChannelRequest`].
+ *
+ * The `temporary_channel_id` parameter indicates which inbound channel should be accepted,
+ * and the `counterparty_node_id` parameter is the id of the peer which has requested to open
+ * the channel.
+ *
+ * The `user_channel_id` parameter will be provided back in
+ * [`Event::ChannelClosed::user_channel_id`] to allow tracking of which events correspond
+ * with which `accept_inbound_channel`/`accept_inbound_channel_from_trusted_peer_0conf` call.
+ *
+ * Note that this method will return an error and reject the channel, if it requires support
+ * for zero confirmations. Instead, `accept_inbound_channel_from_trusted_peer_0conf` must be
+ * used to accept such channels.
+ *
+ * [`Event::OpenChannelRequest`]: events::Event::OpenChannelRequest
+ * [`Event::ChannelClosed::user_channel_id`]: events::Event::ChannelClosed::user_channel_id
+ */
+ public Result_NoneAPIErrorZ accept_inbound_channel(byte[] temporary_channel_id, byte[] counterparty_node_id, org.ldk.util.UInt128 user_channel_id) {
+ long ret = bindings.ChannelManager_accept_inbound_channel(this.ptr, InternalUtils.check_arr_len(temporary_channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33), user_channel_id.getLEBytes());
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(temporary_channel_id);
+ Reference.reachabilityFence(counterparty_node_id);
+ Reference.reachabilityFence(user_channel_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Accepts a request to open a channel after a [`events::Event::OpenChannelRequest`], treating
+ * it as confirmed immediately.
+ *
+ * The `user_channel_id` parameter will be provided back in
+ * [`Event::ChannelClosed::user_channel_id`] to allow tracking of which events correspond
+ * with which `accept_inbound_channel`/`accept_inbound_channel_from_trusted_peer_0conf` call.
+ *
+ * Unlike [`ChannelManager::accept_inbound_channel`], this method accepts the incoming channel
+ * and (if the counterparty agrees), enables forwarding of payments immediately.
+ *
+ * This fully trusts that the counterparty has honestly and correctly constructed the funding
+ * transaction and blindly assumes that it will eventually confirm.
+ *
+ * If it does not confirm before we decide to close the channel, or if the funding transaction
+ * does not pay to the correct script the correct amount, *you will lose funds*.
+ *
+ * [`Event::OpenChannelRequest`]: events::Event::OpenChannelRequest
+ * [`Event::ChannelClosed::user_channel_id`]: events::Event::ChannelClosed::user_channel_id
+ */
+ public Result_NoneAPIErrorZ accept_inbound_channel_from_trusted_peer_0conf(byte[] temporary_channel_id, byte[] counterparty_node_id, org.ldk.util.UInt128 user_channel_id) {
+ long ret = bindings.ChannelManager_accept_inbound_channel_from_trusted_peer_0conf(this.ptr, InternalUtils.check_arr_len(temporary_channel_id, 32), InternalUtils.check_arr_len(counterparty_node_id, 33), user_channel_id.getLEBytes());
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(temporary_channel_id);
+ Reference.reachabilityFence(counterparty_node_id);
+ Reference.reachabilityFence(user_channel_id);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Pays for an [`Offer`] using the given parameters by creating an [`InvoiceRequest`] and
+ * enqueuing it to be sent via an onion message. [`ChannelManager`] will pay the actual
+ * [`Bolt12Invoice`] once it is received.
+ *
+ * Uses [`InvoiceRequestBuilder`] such that the [`InvoiceRequest`] it builds is recognized by
+ * the [`ChannelManager`] when handling a [`Bolt12Invoice`] message in response to the request.
+ * The optional parameters are used in the builder, if `Some`:
+ * - `quantity` for [`InvoiceRequest::quantity`] which must be set if
+ * [`Offer::expects_quantity`] is `true`.
+ * - `amount_msats` if overpaying what is required for the given `quantity` is desired, and
+ * - `payer_note` for [`InvoiceRequest::payer_note`].
+ *
+ * If `max_total_routing_fee_msat` is not specified, The default from
+ * [`RouteParameters::from_payment_params_and_value`] is applied.
+ *
+ * # Payment
+ *
+ * The provided `payment_id` is used to ensure that only one invoice is paid for the request
+ * when received. See [Avoiding Duplicate Payments] for other requirements once the payment has
+ * been sent.
+ *
+ * To revoke the request, use [`ChannelManager::abandon_payment`] prior to receiving the
+ * invoice. If abandoned, or an invoice isn't received in a reasonable amount of time, the
+ * payment will fail with an [`Event::InvoiceRequestFailed`].
+ *
+ * # Privacy
+ *
+ * Uses a one-hop [`BlindedPath`] for the reply path with [`ChannelManager::get_our_node_id`]
+ * as the introduction node and a derived payer id for payer privacy. As such, currently, the
+ * node must be announced. Otherwise, there is no way to find a path to the introduction node
+ * in order to send the [`Bolt12Invoice`].
+ *
+ * # Limitations
+ *
+ * Requires a direct connection to an introduction node in [`Offer::paths`] or to
+ * [`Offer::signing_pubkey`], if empty. A similar restriction applies to the responding
+ * [`Bolt12Invoice::payment_paths`].
+ *
+ * # Errors
+ *
+ * Errors if:
+ * - a duplicate `payment_id` is provided given the caveats in the aforementioned link,
+ * - the provided parameters are invalid for the offer,
+ * - the parameterized [`Router`] is unable to create a blinded reply path for the invoice
+ * request.
+ *
+ * [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
+ * [`InvoiceRequest::quantity`]: crate::offers::invoice_request::InvoiceRequest::quantity
+ * [`InvoiceRequest::payer_note`]: crate::offers::invoice_request::InvoiceRequest::payer_note
+ * [`InvoiceRequestBuilder`]: crate::offers::invoice_request::InvoiceRequestBuilder
+ * [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
+ * [`Bolt12Invoice::payment_paths`]: crate::offers::invoice::Bolt12Invoice::payment_paths
+ * [Avoiding Duplicate Payments]: #avoiding-duplicate-payments
+ */
+ public Result_NoneBolt12SemanticErrorZ pay_for_offer(org.ldk.structs.Offer offer, org.ldk.structs.Option_u64Z quantity, org.ldk.structs.Option_u64Z amount_msats, org.ldk.structs.Option_StrZ payer_note, byte[] payment_id, org.ldk.structs.Retry retry_strategy, org.ldk.structs.Option_u64Z max_total_routing_fee_msat) {
+ long ret = bindings.ChannelManager_pay_for_offer(this.ptr, offer == null ? 0 : offer.ptr, quantity.ptr, amount_msats.ptr, payer_note.ptr, InternalUtils.check_arr_len(payment_id, 32), retry_strategy.ptr, max_total_routing_fee_msat.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(offer);
+ Reference.reachabilityFence(quantity);
+ Reference.reachabilityFence(amount_msats);
+ Reference.reachabilityFence(payer_note);
+ Reference.reachabilityFence(payment_id);
+ Reference.reachabilityFence(retry_strategy);
+ Reference.reachabilityFence(max_total_routing_fee_msat);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneBolt12SemanticErrorZ ret_hu_conv = Result_NoneBolt12SemanticErrorZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(offer); };
+ if (this != null) { this.ptrs_to.add(quantity); };
+ if (this != null) { this.ptrs_to.add(amount_msats); };
+ if (this != null) { this.ptrs_to.add(payer_note); };
+ if (this != null) { this.ptrs_to.add(retry_strategy); };
+ if (this != null) { this.ptrs_to.add(max_total_routing_fee_msat); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Creates a [`Bolt12Invoice`] for a [`Refund`] and enqueues it to be sent via an onion
+ * message.
+ *
+ * The resulting invoice uses a [`PaymentHash`] recognized by the [`ChannelManager`] and a
+ * [`BlindedPath`] containing the [`PaymentSecret`] needed to reconstruct the corresponding
+ * [`PaymentPreimage`].
+ *
+ * # Limitations
*
- * All ChannelMonitor updates up to and including highest_applied_update_id must have been
- * fully committed in every copy of the given channels' ChannelMonitors.
+ * Requires a direct connection to an introduction node in [`Refund::paths`] or to
+ * [`Refund::payer_id`], if empty. This request is best effort; an invoice will be sent to each
+ * node meeting the aforementioned criteria, but there's no guarantee that they will be
+ * received and no retries will be made.
*
- * Note that there is no effect to calling with a highest_applied_update_id other than the
- * current latest ChannelMonitorUpdate and one call to this function after multiple
- * ChannelMonitorUpdateErr::TemporaryFailures is fine. The highest_applied_update_id field
- * exists largely only to prevent races between this and concurrent update_monitor calls.
+ * # Errors
*
- * Thus, the anticipated use is, at a high level:
- * 1) You register a chain::Watch with this ChannelManager,
- * 2) it stores each update to disk, and begins updating any remote (eg watchtower) copies of
- * said ChannelMonitors as it can, returning ChannelMonitorUpdateErr::TemporaryFailures
- * any time it cannot do so instantly,
- * 3) update(s) are applied to each remote copy of a ChannelMonitor,
- * 4) once all remote copies are updated, you call this function with the update_id that
- * completed, and once it is the latest the Channel will be re-enabled.
+ * Errors if the parameterized [`Router`] is unable to create a blinded payment path or reply
+ * path for the invoice.
+ *
+ * [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
*/
- public void channel_monitor_updated(OutPoint funding_txo, long highest_applied_update_id) {
- bindings.ChannelManager_channel_monitor_updated(this.ptr, funding_txo == null ? 0 : funding_txo.ptr & ~1, highest_applied_update_id);
- this.ptrs_to.add(funding_txo);
+ public Result_NoneBolt12SemanticErrorZ request_refund_payment(org.ldk.structs.Refund refund) {
+ long ret = bindings.ChannelManager_request_refund_payment(this.ptr, refund == null ? 0 : refund.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(refund);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_NoneBolt12SemanticErrorZ ret_hu_conv = Result_NoneBolt12SemanticErrorZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(refund); };
+ return ret_hu_conv;
}
/**
@@ -376,49 +1138,63 @@ public class ChannelManager extends CommonBase {
* to pay us.
*
* This differs from [`create_inbound_payment_for_hash`] only in that it generates the
- * [`PaymentHash`] and [`PaymentPreimage`] for you, returning the first and storing the second.
+ * [`PaymentHash`] and [`PaymentPreimage`] for you.
*
- * The [`PaymentPreimage`] will ultimately be returned to you in the [`PaymentReceived`], which
- * will have the [`PaymentReceived::payment_preimage`] field filled in. That should then be
+ * The [`PaymentPreimage`] will ultimately be returned to you in the [`PaymentClaimable`], which
+ * will have the [`PaymentClaimable::purpose`] be [`PaymentPurpose::InvoicePayment`] with
+ * its [`PaymentPurpose::InvoicePayment::payment_preimage`] field filled in. That should then be
* passed directly to [`claim_funds`].
*
* See [`create_inbound_payment_for_hash`] for detailed documentation on behavior and requirements.
*
+ * Note that a malicious eavesdropper can intuit whether an inbound payment was created by
+ * `create_inbound_payment` or `create_inbound_payment_for_hash` based on runtime.
+ *
+ * # Note
+ *
+ * If you register an inbound payment with this method, then serialize the `ChannelManager`, then
+ * deserialize it with a node running 0.0.103 and earlier, the payment will fail to be received.
+ *
+ * Errors if `min_value_msat` is greater than total bitcoin supply.
+ *
+ * If `min_final_cltv_expiry_delta` is set to some value, then the payment will not be receivable
+ * on versions of LDK prior to 0.0.114.
+ *
* [`claim_funds`]: Self::claim_funds
- * [`PaymentReceived`]: events::Event::PaymentReceived
- * [`PaymentReceived::payment_preimage`]: events::Event::PaymentReceived::payment_preimage
+ * [`PaymentClaimable`]: events::Event::PaymentClaimable
+ * [`PaymentClaimable::purpose`]: events::Event::PaymentClaimable::purpose
+ * [`PaymentPurpose::InvoicePayment`]: events::PaymentPurpose::InvoicePayment
+ * [`PaymentPurpose::InvoicePayment::payment_preimage`]: events::PaymentPurpose::InvoicePayment::payment_preimage
* [`create_inbound_payment_for_hash`]: Self::create_inbound_payment_for_hash
*/
- public TwoTuple create_inbound_payment(Option_u64Z min_value_msat, int invoice_expiry_delta_secs, long user_payment_id) {
- long ret = bindings.ChannelManager_create_inbound_payment(this.ptr, min_value_msat.ptr, invoice_expiry_delta_secs, user_payment_id);
- byte[] ret_a = bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_a(ret);
- byte[] ret_b = bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_b(ret);
- TwoTuple ret_conv = new TwoTuple(ret_a, ret_b, () -> {
- bindings.C2Tuple_PaymentHashPaymentSecretZ_free(ret);
- });
- return ret_conv;
+ public Result_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZNoneZ create_inbound_payment(org.ldk.structs.Option_u64Z min_value_msat, int invoice_expiry_delta_secs, org.ldk.structs.Option_u16Z min_final_cltv_expiry_delta) {
+ long ret = bindings.ChannelManager_create_inbound_payment(this.ptr, min_value_msat.ptr, invoice_expiry_delta_secs, min_final_cltv_expiry_delta.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(min_value_msat);
+ Reference.reachabilityFence(invoice_expiry_delta_secs);
+ Reference.reachabilityFence(min_final_cltv_expiry_delta);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZNoneZ ret_hu_conv = Result_C2Tuple_ThirtyTwoBytesThirtyTwoBytesZNoneZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(min_value_msat); };
+ if (this != null) { this.ptrs_to.add(min_final_cltv_expiry_delta); };
+ return ret_hu_conv;
}
/**
* Gets a [`PaymentSecret`] for a given [`PaymentHash`], for which the payment preimage is
* stored external to LDK.
*
- * A [`PaymentReceived`] event will only be generated if the [`PaymentSecret`] matches a
+ * A [`PaymentClaimable`] event will only be generated if the [`PaymentSecret`] matches a
* payment secret fetched via this method or [`create_inbound_payment`], and which is at least
* the `min_value_msat` provided here, if one is provided.
*
- * The [`PaymentHash`] (and corresponding [`PaymentPreimage`]) must be globally unique. This
- * method may return an Err if another payment with the same payment_hash is still pending.
- *
- * `user_payment_id` will be provided back in [`PaymentReceived::user_payment_id`] events to
- * allow tracking of which events correspond with which calls to this and
- * [`create_inbound_payment`]. `user_payment_id` has no meaning inside of LDK, it is simply
- * copied to events and otherwise ignored. It may be used to correlate PaymentReceived events
- * with invoice metadata stored elsewhere.
+ * The [`PaymentHash`] (and corresponding [`PaymentPreimage`]) should be globally unique, though
+ * note that LDK will not stop you from registering duplicate payment hashes for inbound
+ * payments.
*
* `min_value_msat` should be set if the invoice being generated contains a value. Any payment
* received for the returned [`PaymentHash`] will be required to be at least `min_value_msat`
- * before a [`PaymentReceived`] event will be generated, ensuring that we do not provide the
+ * before a [`PaymentClaimable`] event will be generated, ensuring that we do not provide the
* sender \"proof-of-payment\" unless they have paid the required amount.
*
* `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
@@ -429,26 +1205,109 @@ public class ChannelManager extends CommonBase {
*
* Note that we use block header time to time-out pending inbound payments (with some margin
* to compensate for the inaccuracy of block header timestamps). Thus, in practice we will
- * accept a payment and generate a [`PaymentReceived`] event for some time after the expiry.
+ * accept a payment and generate a [`PaymentClaimable`] event for some time after the expiry.
* If you need exact expiry semantics, you should enforce them upon receipt of
- * [`PaymentReceived`].
+ * [`PaymentClaimable`].
+ *
+ * Note that invoices generated for inbound payments should have their `min_final_cltv_expiry_delta`
+ * set to at least [`MIN_FINAL_CLTV_EXPIRY_DELTA`].
+ *
+ * Note that a malicious eavesdropper can intuit whether an inbound payment was created by
+ * `create_inbound_payment` or `create_inbound_payment_for_hash` based on runtime.
+ *
+ * # Note
+ *
+ * If you register an inbound payment with this method, then serialize the `ChannelManager`, then
+ * deserialize it with a node running 0.0.103 and earlier, the payment will fail to be received.
*
- * Pending inbound payments are stored in memory and in serialized versions of this
- * [`ChannelManager`]. If potentially unbounded numbers of inbound payments may exist and
- * space is limited, you may wish to rate-limit inbound payment creation.
+ * Errors if `min_value_msat` is greater than total bitcoin supply.
*
- * May panic if `invoice_expiry_delta_secs` is greater than one year.
+ * If `min_final_cltv_expiry_delta` is set to some value, then the payment will not be receivable
+ * on versions of LDK prior to 0.0.114.
*
- * Note that invoices generated for inbound payments should have their `min_final_cltv_expiry`
- * set to at least [`MIN_FINAL_CLTV_EXPIRY`].
+ * [`create_inbound_payment`]: Self::create_inbound_payment
+ * [`PaymentClaimable`]: events::Event::PaymentClaimable
+ */
+ public Result_ThirtyTwoBytesNoneZ create_inbound_payment_for_hash(byte[] payment_hash, org.ldk.structs.Option_u64Z min_value_msat, int invoice_expiry_delta_secs, org.ldk.structs.Option_u16Z min_final_cltv_expiry) {
+ long ret = bindings.ChannelManager_create_inbound_payment_for_hash(this.ptr, InternalUtils.check_arr_len(payment_hash, 32), min_value_msat.ptr, invoice_expiry_delta_secs, min_final_cltv_expiry.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_hash);
+ Reference.reachabilityFence(min_value_msat);
+ Reference.reachabilityFence(invoice_expiry_delta_secs);
+ Reference.reachabilityFence(min_final_cltv_expiry);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_ThirtyTwoBytesNoneZ ret_hu_conv = Result_ThirtyTwoBytesNoneZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(min_value_msat); };
+ if (this != null) { this.ptrs_to.add(min_final_cltv_expiry); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Gets an LDK-generated payment preimage from a payment hash and payment secret that were
+ * previously returned from [`create_inbound_payment`].
*
* [`create_inbound_payment`]: Self::create_inbound_payment
- * [`PaymentReceived`]: events::Event::PaymentReceived
- * [`PaymentReceived::user_payment_id`]: events::Event::PaymentReceived::user_payment_id
*/
- public Result_PaymentSecretAPIErrorZ create_inbound_payment_for_hash(byte[] payment_hash, Option_u64Z min_value_msat, int invoice_expiry_delta_secs, long user_payment_id) {
- long ret = bindings.ChannelManager_create_inbound_payment_for_hash(this.ptr, payment_hash, min_value_msat.ptr, invoice_expiry_delta_secs, user_payment_id);
- Result_PaymentSecretAPIErrorZ ret_hu_conv = Result_PaymentSecretAPIErrorZ.constr_from_ptr(ret);
+ public Result_ThirtyTwoBytesAPIErrorZ get_payment_preimage(byte[] payment_hash, byte[] payment_secret) {
+ long ret = bindings.ChannelManager_get_payment_preimage(this.ptr, InternalUtils.check_arr_len(payment_hash, 32), InternalUtils.check_arr_len(payment_secret, 32));
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(payment_hash);
+ Reference.reachabilityFence(payment_secret);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_ThirtyTwoBytesAPIErrorZ ret_hu_conv = Result_ThirtyTwoBytesAPIErrorZ.constr_from_ptr(ret);
+ return ret_hu_conv;
+ }
+
+ /**
+ * Gets a fake short channel id for use in receiving [phantom node payments]. These fake scids
+ * are used when constructing the phantom invoice's route hints.
+ *
+ * [phantom node payments]: crate::sign::PhantomKeysManager
+ */
+ public long get_phantom_scid() {
+ long ret = bindings.ChannelManager_get_phantom_scid(this.ptr);
+ Reference.reachabilityFence(this);
+ return ret;
+ }
+
+ /**
+ * Gets route hints for use in receiving [phantom node payments].
+ *
+ * [phantom node payments]: crate::sign::PhantomKeysManager
+ */
+ public PhantomRouteHints get_phantom_route_hints() {
+ long ret = bindings.ChannelManager_get_phantom_route_hints(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.PhantomRouteHints ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.PhantomRouteHints(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Gets a fake short channel id for use in receiving intercepted payments. These fake scids are
+ * used when constructing the route hints for HTLCs intended to be intercepted. See
+ * [`ChannelManager::forward_intercepted_htlc`].
+ *
+ * Note that this method is not guaranteed to return unique values, you may need to call it a few
+ * times to get a unique scid.
+ */
+ public long get_intercept_scid() {
+ long ret = bindings.ChannelManager_get_intercept_scid(this.ptr);
+ Reference.reachabilityFence(this);
+ return ret;
+ }
+
+ /**
+ * Gets inflight HTLC information by processing pending outbound payments that are in
+ * our channels. May be used during pathfinding to account for in-use channel liquidity.
+ */
+ public InFlightHtlcs compute_inflight_htlcs() {
+ long ret = bindings.ChannelManager_compute_inflight_htlcs(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.InFlightHtlcs ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.InFlightHtlcs(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
return ret_hu_conv;
}
@@ -458,8 +1317,10 @@ public class ChannelManager extends CommonBase {
*/
public MessageSendEventsProvider as_MessageSendEventsProvider() {
long ret = bindings.ChannelManager_as_MessageSendEventsProvider(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
MessageSendEventsProvider ret_hu_conv = new MessageSendEventsProvider(null, ret);
- ret_hu_conv.ptrs_to.add(this);
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
return ret_hu_conv;
}
@@ -469,8 +1330,10 @@ public class ChannelManager extends CommonBase {
*/
public EventsProvider as_EventsProvider() {
long ret = bindings.ChannelManager_as_EventsProvider(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
EventsProvider ret_hu_conv = new EventsProvider(null, ret);
- ret_hu_conv.ptrs_to.add(this);
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
return ret_hu_conv;
}
@@ -480,8 +1343,10 @@ public class ChannelManager extends CommonBase {
*/
public Listen as_Listen() {
long ret = bindings.ChannelManager_as_Listen(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
Listen ret_hu_conv = new Listen(null, ret);
- ret_hu_conv.ptrs_to.add(this);
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
return ret_hu_conv;
}
@@ -491,30 +1356,104 @@ public class ChannelManager extends CommonBase {
*/
public Confirm as_Confirm() {
long ret = bindings.ChannelManager_as_Confirm(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
Confirm ret_hu_conv = new Confirm(null, ret);
- ret_hu_conv.ptrs_to.add(this);
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Gets a [`Future`] that completes when this [`ChannelManager`] may need to be persisted or
+ * may have events that need processing.
+ *
+ * In order to check if this [`ChannelManager`] needs persisting, call
+ * [`Self::get_and_clear_needs_persistence`].
+ *
+ * Note that callbacks registered on the [`Future`] MUST NOT call back into this
+ * [`ChannelManager`] and should instead register actions to be taken later.
+ */
+ public Future get_event_or_persistence_needed_future() {
+ long ret = bindings.ChannelManager_get_event_or_persistence_needed_future(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.Future ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.Future(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
return ret_hu_conv;
}
/**
- * Blocks until ChannelManager needs to be persisted or a timeout is reached. It returns a bool
- * indicating whether persistence is necessary. Only one listener on
- * `await_persistable_update` or `await_persistable_update_timeout` is guaranteed to be woken
- * up.
- * Note that the feature `allow_wallclock_use` must be enabled to use this function.
+ * Returns true if this [`ChannelManager`] needs to be persisted.
*/
- public boolean await_persistable_update_timeout(long max_wait) {
- boolean ret = bindings.ChannelManager_await_persistable_update_timeout(this.ptr, max_wait);
+ public boolean get_and_clear_needs_persistence() {
+ boolean ret = bindings.ChannelManager_get_and_clear_needs_persistence(this.ptr);
+ Reference.reachabilityFence(this);
return ret;
}
/**
- * Blocks until ChannelManager needs to be persisted. Only one listener on
- * `await_persistable_update` or `await_persistable_update_timeout` is guaranteed to be woken
- * up.
+ * Gets the latest best block which was connected either via the [`chain::Listen`] or
+ * [`chain::Confirm`] interfaces.
*/
- public void await_persistable_update() {
- bindings.ChannelManager_await_persistable_update(this.ptr);
+ public BestBlock current_best_block() {
+ long ret = bindings.ChannelManager_current_best_block(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.BestBlock ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.BestBlock(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Fetches the set of [`NodeFeatures`] flags that are provided by or required by
+ * [`ChannelManager`].
+ */
+ public NodeFeatures node_features() {
+ long ret = bindings.ChannelManager_node_features(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.NodeFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.NodeFeatures(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Fetches the set of [`ChannelFeatures`] flags that are provided by or required by
+ * [`ChannelManager`].
+ */
+ public ChannelFeatures channel_features() {
+ long ret = bindings.ChannelManager_channel_features(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.ChannelFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ChannelFeatures(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Fetches the set of [`ChannelTypeFeatures`] flags that are provided by or required by
+ * [`ChannelManager`].
+ */
+ public ChannelTypeFeatures channel_type_features() {
+ long ret = bindings.ChannelManager_channel_type_features(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.ChannelTypeFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ChannelTypeFeatures(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Fetches the set of [`InitFeatures`] flags that are provided by or required by
+ * [`ChannelManager`].
+ */
+ public InitFeatures init_features() {
+ long ret = bindings.ChannelManager_init_features(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ org.ldk.structs.InitFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.InitFeatures(null, ret); }
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
}
/**
@@ -523,8 +1462,23 @@ public class ChannelManager extends CommonBase {
*/
public ChannelMessageHandler as_ChannelMessageHandler() {
long ret = bindings.ChannelManager_as_ChannelMessageHandler(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
ChannelMessageHandler ret_hu_conv = new ChannelMessageHandler(null, ret);
- ret_hu_conv.ptrs_to.add(this);
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Constructs a new OffersMessageHandler which calls the relevant methods on this_arg.
+ * This copies the `inner` pointer in this_arg and thus the returned OffersMessageHandler must be freed before this_arg is
+ */
+ public OffersMessageHandler as_OffersMessageHandler() {
+ long ret = bindings.ChannelManager_as_OffersMessageHandler(this.ptr);
+ Reference.reachabilityFence(this);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ OffersMessageHandler ret_hu_conv = new OffersMessageHandler(null, ret);
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
return ret_hu_conv;
}
@@ -533,6 +1487,7 @@ public class ChannelManager extends CommonBase {
*/
public byte[] write() {
byte[] ret = bindings.ChannelManager_write(this.ptr);
+ Reference.reachabilityFence(this);
return ret;
}