_ Git - ldk-java/blob - c_sharp/src/org/ldk/structs/ChannelMonitor.cs

   1 using org.ldk.impl;
   2 using org.ldk.enums;
   3 using org.ldk.util;
   4 using System;
   5
   6 namespace org { namespace ldk { namespace structs {
   7
   8
   9 /**
  10  * A ChannelMonitor handles chain events (blocks connected and disconnected) and generates
  11  * on-chain transactions to ensure no loss of funds occurs.
  12  *
  13  * You MUST ensure that no ChannelMonitors for a given channel anywhere contain out-of-date
  14  * information and are actively monitoring the chain.
  15  *
  16  * Note that the deserializer is only implemented for (BlockHash, ChannelMonitor), which
  17  * tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along
  18  * the \"reorg path\" (ie disconnecting blocks until you find a common ancestor from both the
  19  * returned block hash and the the current chain and then reconnecting blocks to get to the
  20  * best chain) upon deserializing the object!
  21  */
  22 public class ChannelMonitor : CommonBase {
  23         internal ChannelMonitor(object _dummy, long ptr) : base(ptr) { }
  24         ~ChannelMonitor() {
  25                 if (ptr != 0) { bindings.ChannelMonitor_free(ptr); }
  26         }
  27
  28         internal long clone_ptr() {
  29                 long ret = bindings.ChannelMonitor_clone_ptr(this.ptr);
  30                 GC.KeepAlive(this);
  31                 return ret;
  32         }
  33
  34         /**
  35          * Creates a copy of the ChannelMonitor
  36          */
  37         public ChannelMonitor clone() {
  38                 long ret = bindings.ChannelMonitor_clone(this.ptr);
  39                 GC.KeepAlive(this);
  40                 if (ret >= 0 && ret <= 4096) { return null; }
  41                 org.ldk.structs.ChannelMonitor ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ChannelMonitor(null, ret); }
  42                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
  43                 return ret_hu_conv;
  44         }
  45
  46         /**
  47          * Serialize the ChannelMonitor object into a byte array which can be read by ChannelMonitor_read
  48          */
  49         public byte[] write() {
  50                 long ret = bindings.ChannelMonitor_write(this.ptr);
  51                 GC.KeepAlive(this);
  52                 if (ret >= 0 && ret <= 4096) { return null; }
  53                 byte[] ret_conv = InternalUtils.decodeUint8Array(ret);
  54                 return ret_conv;
  55         }
  56
  57         /**
  58          * Updates a ChannelMonitor on the basis of some new information provided by the Channel
  59          * itself.
  60          *
  61          * panics if the given update is not the next update by update_id.
  62          */
  63         public Result_NoneNoneZ update_monitor(org.ldk.structs.ChannelMonitorUpdate updates, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
  64                 long ret = bindings.ChannelMonitor_update_monitor(this.ptr, updates == null ? 0 : updates.ptr, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
  65                 GC.KeepAlive(this);
  66                 GC.KeepAlive(updates);
  67                 GC.KeepAlive(broadcaster);
  68                 GC.KeepAlive(fee_estimator);
  69                 GC.KeepAlive(logger);
  70                 if (ret >= 0 && ret <= 4096) { return null; }
  71                 Result_NoneNoneZ ret_hu_conv = Result_NoneNoneZ.constr_from_ptr(ret);
  72                 if (this != null) { this.ptrs_to.AddLast(updates); };
  73                 if (this != null) { this.ptrs_to.AddLast(broadcaster); };
  74                 if (this != null) { this.ptrs_to.AddLast(fee_estimator); };
  75                 if (this != null) { this.ptrs_to.AddLast(logger); };
  76                 return ret_hu_conv;
  77         }
  78
  79         /**
  80          * Gets the update_id from the latest ChannelMonitorUpdate which was applied to this
  81          * ChannelMonitor.
  82          */
  83         public long get_latest_update_id() {
  84                 long ret = bindings.ChannelMonitor_get_latest_update_id(this.ptr);
  85                 GC.KeepAlive(this);
  86                 return ret;
  87         }
  88
  89         /**
  90          * Gets the funding transaction outpoint of the channel this ChannelMonitor is monitoring for.
  91          */
  92         public TwoTuple_OutPointCVec_u8ZZ get_funding_txo() {
  93                 long ret = bindings.ChannelMonitor_get_funding_txo(this.ptr);
  94                 GC.KeepAlive(this);
  95                 if (ret >= 0 && ret <= 4096) { return null; }
  96                 TwoTuple_OutPointCVec_u8ZZ ret_hu_conv = new TwoTuple_OutPointCVec_u8ZZ(null, ret);
  97                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
  98                 return ret_hu_conv;
  99         }
 100
 101         /**
 102          * Gets a list of txids, with their output scripts (in the order they appear in the
 103          * transaction), which we must learn about spends of via block_connected().
 104          */
 105         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[] get_outputs_to_watch() {
 106                 long ret = bindings.ChannelMonitor_get_outputs_to_watch(this.ptr);
 107                 GC.KeepAlive(this);
 108                 if (ret >= 0 && ret <= 4096) { return null; }
 109                 int ret_conv_52_len = InternalUtils.getArrayLength(ret);
 110                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[] ret_conv_52_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[ret_conv_52_len];
 111                 for (int a = 0; a < ret_conv_52_len; a++) {
 112                         long ret_conv_52 = InternalUtils.getU64ArrayElem(ret, a);
 113                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ ret_conv_52_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ(null, ret_conv_52);
 114                         if (ret_conv_52_hu_conv != null) { ret_conv_52_hu_conv.ptrs_to.AddLast(this); };
 115                         ret_conv_52_arr[a] = ret_conv_52_hu_conv;
 116                 }
 117                 bindings.free_buffer(ret);
 118                 return ret_conv_52_arr;
 119         }
 120
 121         /**
 122          * Loads the funding txo and outputs to watch into the given `chain::Filter` by repeatedly
 123          * calling `chain::Filter::register_output` and `chain::Filter::register_tx` until all outputs
 124          * have been registered.
 125          */
 126         public void load_outputs_to_watch(org.ldk.structs.Filter filter, org.ldk.structs.Logger logger) {
 127                 bindings.ChannelMonitor_load_outputs_to_watch(this.ptr, filter.ptr, logger.ptr);
 128                 GC.KeepAlive(this);
 129                 GC.KeepAlive(filter);
 130                 GC.KeepAlive(logger);
 131                 if (this != null) { this.ptrs_to.AddLast(filter); };
 132                 if (this != null) { this.ptrs_to.AddLast(logger); };
 133         }
 134
 135         /**
 136          * Get the list of HTLCs who's status has been updated on chain. This should be called by
 137          * ChannelManager via [`chain::Watch::release_pending_monitor_events`].
 138          */
 139         public MonitorEvent[] get_and_clear_pending_monitor_events() {
 140                 long ret = bindings.ChannelMonitor_get_and_clear_pending_monitor_events(this.ptr);
 141                 GC.KeepAlive(this);
 142                 if (ret >= 0 && ret <= 4096) { return null; }
 143                 int ret_conv_14_len = InternalUtils.getArrayLength(ret);
 144                 MonitorEvent[] ret_conv_14_arr = new MonitorEvent[ret_conv_14_len];
 145                 for (int o = 0; o < ret_conv_14_len; o++) {
 146                         long ret_conv_14 = InternalUtils.getU64ArrayElem(ret, o);
 147                         org.ldk.structs.MonitorEvent ret_conv_14_hu_conv = org.ldk.structs.MonitorEvent.constr_from_ptr(ret_conv_14);
 148                         if (ret_conv_14_hu_conv != null) { ret_conv_14_hu_conv.ptrs_to.AddLast(this); };
 149                         ret_conv_14_arr[o] = ret_conv_14_hu_conv;
 150                 }
 151                 bindings.free_buffer(ret);
 152                 return ret_conv_14_arr;
 153         }
 154
 155         /**
 156          * Processes [`SpendableOutputs`] events produced from each [`ChannelMonitor`] upon maturity.
 157          *
 158          * For channels featuring anchor outputs, this method will also process [`BumpTransaction`]
 159          * events produced from each [`ChannelMonitor`] while there is a balance to claim onchain
 160          * within each channel. As the confirmation of a commitment transaction may be critical to the
 161          * safety of funds, we recommend invoking this every 30 seconds, or lower if running in an
 162          * environment with spotty connections, like on mobile.
 163          *
 164          * An [`EventHandler`] may safely call back to the provider, though this shouldn't be needed in
 165          * order to handle these events.
 166          *
 167          * [`SpendableOutputs`]: crate::events::Event::SpendableOutputs
 168          * [`BumpTransaction`]: crate::events::Event::BumpTransaction
 169          */
 170         public void process_pending_events(org.ldk.structs.EventHandler handler) {
 171                 bindings.ChannelMonitor_process_pending_events(this.ptr, handler.ptr);
 172                 GC.KeepAlive(this);
 173                 GC.KeepAlive(handler);
 174                 if (this != null) { this.ptrs_to.AddLast(handler); };
 175         }
 176
 177         /**
 178          * Gets the counterparty's initial commitment transaction. The returned commitment
 179          * transaction is unsigned. This is intended to be called during the initial persistence of
 180          * the monitor (inside an implementation of [`Persist::persist_new_channel`]), to allow for
 181          * watchtowers in the persistence pipeline to have enough data to form justice transactions.
 182          *
 183          * This is similar to [`Self::counterparty_commitment_txs_from_update`], except
 184          * that for the initial commitment transaction, we don't have a corresponding update.
 185          *
 186          * This will only return `Some` for channel monitors that have been created after upgrading
 187          * to LDK 0.0.117+.
 188          *
 189          * [`Persist::persist_new_channel`]: crate::chain::chainmonitor::Persist::persist_new_channel
 190          *
 191          * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
 192          */
 193         public CommitmentTransaction initial_counterparty_commitment_tx() {
 194                 long ret = bindings.ChannelMonitor_initial_counterparty_commitment_tx(this.ptr);
 195                 GC.KeepAlive(this);
 196                 if (ret >= 0 && ret <= 4096) { return null; }
 197                 org.ldk.structs.CommitmentTransaction ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.CommitmentTransaction(null, ret); }
 198                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
 199                 return ret_hu_conv;
 200         }
 201
 202         /**
 203          * Gets all of the counterparty commitment transactions provided by the given update. This
 204          * may be empty if the update doesn't include any new counterparty commitments. Returned
 205          * commitment transactions are unsigned.
 206          *
 207          * This is provided so that watchtower clients in the persistence pipeline are able to build
 208          * justice transactions for each counterparty commitment upon each update. It's intended to be
 209          * used within an implementation of [`Persist::update_persisted_channel`], which is provided
 210          * with a monitor and an update. Once revoked, signing a justice transaction can be done using
 211          * [`Self::sign_to_local_justice_tx`].
 212          *
 213          * It is expected that a watchtower client may use this method to retrieve the latest counterparty
 214          * commitment transaction(s), and then hold the necessary data until a later update in which
 215          * the monitor has been updated with the corresponding revocation data, at which point the
 216          * monitor can sign the justice transaction.
 217          *
 218          * This will only return a non-empty list for monitor updates that have been created after
 219          * upgrading to LDK 0.0.117+. Note that no restriction lies on the monitors themselves, which
 220          * may have been created prior to upgrading.
 221          *
 222          * [`Persist::update_persisted_channel`]: crate::chain::chainmonitor::Persist::update_persisted_channel
 223          */
 224         public CommitmentTransaction[] counterparty_commitment_txs_from_update(org.ldk.structs.ChannelMonitorUpdate update) {
 225                 long ret = bindings.ChannelMonitor_counterparty_commitment_txs_from_update(this.ptr, update == null ? 0 : update.ptr);
 226                 GC.KeepAlive(this);
 227                 GC.KeepAlive(update);
 228                 if (ret >= 0 && ret <= 4096) { return null; }
 229                 int ret_conv_23_len = InternalUtils.getArrayLength(ret);
 230                 CommitmentTransaction[] ret_conv_23_arr = new CommitmentTransaction[ret_conv_23_len];
 231                 for (int x = 0; x < ret_conv_23_len; x++) {
 232                         long ret_conv_23 = InternalUtils.getU64ArrayElem(ret, x);
 233                         org.ldk.structs.CommitmentTransaction ret_conv_23_hu_conv = null; if (ret_conv_23 < 0 || ret_conv_23 > 4096) { ret_conv_23_hu_conv = new org.ldk.structs.CommitmentTransaction(null, ret_conv_23); }
 234                         if (ret_conv_23_hu_conv != null) { ret_conv_23_hu_conv.ptrs_to.AddLast(this); };
 235                         ret_conv_23_arr[x] = ret_conv_23_hu_conv;
 236                 }
 237                 bindings.free_buffer(ret);
 238                 if (this != null) { this.ptrs_to.AddLast(update); };
 239                 return ret_conv_23_arr;
 240         }
 241
 242         /**
 243          * Wrapper around [`EcdsaChannelSigner::sign_justice_revoked_output`] to make
 244          * signing the justice transaction easier for implementors of
 245          * [`chain::chainmonitor::Persist`]. On success this method returns the provided transaction
 246          * signing the input at `input_idx`. This method will only produce a valid signature for
 247          * a transaction spending the `to_local` output of a commitment transaction, i.e. this cannot
 248          * be used for revoked HTLC outputs.
 249          *
 250          * `Value` is the value of the output being spent by the input at `input_idx`, committed
 251          * in the BIP 143 signature.
 252          *
 253          * This method will only succeed if this monitor has received the revocation secret for the
 254          * provided `commitment_number`. If a commitment number is provided that does not correspond
 255          * to the commitment transaction being revoked, this will return a signed transaction, but
 256          * the signature will not be valid.
 257          *
 258          * [`EcdsaChannelSigner::sign_justice_revoked_output`]: crate::sign::ecdsa::EcdsaChannelSigner::sign_justice_revoked_output
 259          * [`Persist`]: crate::chain::chainmonitor::Persist
 260          */
 261         public Result_TransactionNoneZ sign_to_local_justice_tx(byte[] justice_tx, long input_idx, long value, long commitment_number) {
 262                 long ret = bindings.ChannelMonitor_sign_to_local_justice_tx(this.ptr, InternalUtils.encodeUint8Array(justice_tx), input_idx, value, commitment_number);
 263                 GC.KeepAlive(this);
 264                 GC.KeepAlive(justice_tx);
 265                 GC.KeepAlive(input_idx);
 266                 GC.KeepAlive(value);
 267                 GC.KeepAlive(commitment_number);
 268                 if (ret >= 0 && ret <= 4096) { return null; }
 269                 Result_TransactionNoneZ ret_hu_conv = Result_TransactionNoneZ.constr_from_ptr(ret);
 270                 return ret_hu_conv;
 271         }
 272
 273         /**
 274          * Gets the `node_id` of the counterparty for this channel.
 275          *
 276          * Will be `None` for channels constructed on LDK versions prior to 0.0.110 and always `Some`
 277          * otherwise.
 278          *
 279          * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
 280          */
 281         public byte[] get_counterparty_node_id() {
 282                 long ret = bindings.ChannelMonitor_get_counterparty_node_id(this.ptr);
 283                 GC.KeepAlive(this);
 284                 if (ret >= 0 && ret <= 4096) { return null; }
 285                 byte[] ret_conv = InternalUtils.decodeUint8Array(ret);
 286                 return ret_conv;
 287         }
 288
 289         /**
 290          * Used by [`ChannelManager`] deserialization to broadcast the latest holder state if its copy
 291          * of the channel state was out-of-date.
 292          *
 293          * You may also use this to broadcast the latest local commitment transaction, either because
 294          * a monitor update failed or because we've fallen behind (i.e. we've received proof that our
 295          * counterparty side knows a revocation secret we gave them that they shouldn't know).
 296          *
 297          * Broadcasting these transactions in the second case is UNSAFE, as they allow counterparty
 298          * side to punish you. Nevertheless you may want to broadcast them if counterparty doesn't
 299          * close channel with their commitment transaction after a substantial amount of time. Best
 300          * may be to contact the other node operator out-of-band to coordinate other options available
 301          * to you.
 302          *
 303          * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
 304          */
 305         public byte[][] get_latest_holder_commitment_txn(org.ldk.structs.Logger logger) {
 306                 long ret = bindings.ChannelMonitor_get_latest_holder_commitment_txn(this.ptr, logger.ptr);
 307                 GC.KeepAlive(this);
 308                 GC.KeepAlive(logger);
 309                 if (ret >= 0 && ret <= 4096) { return null; }
 310                 int ret_conv_8_len = InternalUtils.getArrayLength(ret);
 311                 byte[][] ret_conv_8_arr = new byte[ret_conv_8_len][];
 312                 for (int i = 0; i < ret_conv_8_len; i++) {
 313                         long ret_conv_8 = InternalUtils.getU64ArrayElem(ret, i);
 314                         byte[] ret_conv_8_conv = InternalUtils.decodeUint8Array(ret_conv_8);
 315                         ret_conv_8_arr[i] = ret_conv_8_conv;
 316                 }
 317                 bindings.free_buffer(ret);
 318                 if (this != null) { this.ptrs_to.AddLast(logger); };
 319                 return ret_conv_8_arr;
 320         }
 321
 322         /**
 323          * Processes transactions in a newly connected block, which may result in any of the following:
 324          * - update the monitor's state against resolved HTLCs
 325          * - punish the counterparty in the case of seeing a revoked commitment transaction
 326          * - force close the channel and claim/timeout incoming/outgoing HTLCs if near expiration
 327          * - detect settled outputs for later spending
 328          * - schedule and bump any in-flight claims
 329          *
 330          * Returns any new outputs to watch from `txdata`; after called, these are also included in
 331          * [`get_outputs_to_watch`].
 332          *
 333          * [`get_outputs_to_watch`]: #method.get_outputs_to_watch
 334          */
 335         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] block_connected(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 336                 long ret = bindings.ChannelMonitor_block_connected(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(header, 80)), InternalUtils.encodeUint64Array(InternalUtils.mapArray(txdata, txdata_conv_28 => txdata_conv_28 != null ? txdata_conv_28.ptr : 0)), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 337                 GC.KeepAlive(this);
 338                 GC.KeepAlive(header);
 339                 GC.KeepAlive(txdata);
 340                 GC.KeepAlive(height);
 341                 GC.KeepAlive(broadcaster);
 342                 GC.KeepAlive(fee_estimator);
 343                 GC.KeepAlive(logger);
 344                 if (ret >= 0 && ret <= 4096) { return null; }
 345                 int ret_conv_49_len = InternalUtils.getArrayLength(ret);
 346                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len];
 347                 for (int x = 0; x < ret_conv_49_len; x++) {
 348                         long ret_conv_49 = InternalUtils.getU64ArrayElem(ret, x);
 349                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49);
 350                         if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.AddLast(this); };
 351                         ret_conv_49_arr[x] = ret_conv_49_hu_conv;
 352                 }
 353                 bindings.free_buffer(ret);
 354                 if (this != null) { this.ptrs_to.AddLast(broadcaster); };
 355                 if (this != null) { this.ptrs_to.AddLast(fee_estimator); };
 356                 if (this != null) { this.ptrs_to.AddLast(logger); };
 357                 return ret_conv_49_arr;
 358         }
 359
 360         /**
 361          * Determines if the disconnected block contained any transactions of interest and updates
 362          * appropriately.
 363          */
 364         public void block_disconnected(byte[] header, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 365                 bindings.ChannelMonitor_block_disconnected(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(header, 80)), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 366                 GC.KeepAlive(this);
 367                 GC.KeepAlive(header);
 368                 GC.KeepAlive(height);
 369                 GC.KeepAlive(broadcaster);
 370                 GC.KeepAlive(fee_estimator);
 371                 GC.KeepAlive(logger);
 372                 if (this != null) { this.ptrs_to.AddLast(broadcaster); };
 373                 if (this != null) { this.ptrs_to.AddLast(fee_estimator); };
 374                 if (this != null) { this.ptrs_to.AddLast(logger); };
 375         }
 376
 377         /**
 378          * Processes transactions confirmed in a block with the given header and height, returning new
 379          * outputs to watch. See [`block_connected`] for details.
 380          *
 381          * Used instead of [`block_connected`] by clients that are notified of transactions rather than
 382          * blocks. See [`chain::Confirm`] for calling expectations.
 383          *
 384          * [`block_connected`]: Self::block_connected
 385          */
 386         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] transactions_confirmed(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 387                 long ret = bindings.ChannelMonitor_transactions_confirmed(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(header, 80)), InternalUtils.encodeUint64Array(InternalUtils.mapArray(txdata, txdata_conv_28 => txdata_conv_28 != null ? txdata_conv_28.ptr : 0)), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 388                 GC.KeepAlive(this);
 389                 GC.KeepAlive(header);
 390                 GC.KeepAlive(txdata);
 391                 GC.KeepAlive(height);
 392                 GC.KeepAlive(broadcaster);
 393                 GC.KeepAlive(fee_estimator);
 394                 GC.KeepAlive(logger);
 395                 if (ret >= 0 && ret <= 4096) { return null; }
 396                 int ret_conv_49_len = InternalUtils.getArrayLength(ret);
 397                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len];
 398                 for (int x = 0; x < ret_conv_49_len; x++) {
 399                         long ret_conv_49 = InternalUtils.getU64ArrayElem(ret, x);
 400                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49);
 401                         if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.AddLast(this); };
 402                         ret_conv_49_arr[x] = ret_conv_49_hu_conv;
 403                 }
 404                 bindings.free_buffer(ret);
 405                 if (this != null) { this.ptrs_to.AddLast(broadcaster); };
 406                 if (this != null) { this.ptrs_to.AddLast(fee_estimator); };
 407                 if (this != null) { this.ptrs_to.AddLast(logger); };
 408                 return ret_conv_49_arr;
 409         }
 410
 411         /**
 412          * Processes a transaction that was reorganized out of the chain.
 413          *
 414          * Used instead of [`block_disconnected`] by clients that are notified of transactions rather
 415          * than blocks. See [`chain::Confirm`] for calling expectations.
 416          *
 417          * [`block_disconnected`]: Self::block_disconnected
 418          */
 419         public void transaction_unconfirmed(byte[] txid, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 420                 bindings.ChannelMonitor_transaction_unconfirmed(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(txid, 32)), broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 421                 GC.KeepAlive(this);
 422                 GC.KeepAlive(txid);
 423                 GC.KeepAlive(broadcaster);
 424                 GC.KeepAlive(fee_estimator);
 425                 GC.KeepAlive(logger);
 426                 if (this != null) { this.ptrs_to.AddLast(broadcaster); };
 427                 if (this != null) { this.ptrs_to.AddLast(fee_estimator); };
 428                 if (this != null) { this.ptrs_to.AddLast(logger); };
 429         }
 430
 431         /**
 432          * Updates the monitor with the current best chain tip, returning new outputs to watch. See
 433          * [`block_connected`] for details.
 434          *
 435          * Used instead of [`block_connected`] by clients that are notified of transactions rather than
 436          * blocks. See [`chain::Confirm`] for calling expectations.
 437          *
 438          * [`block_connected`]: Self::block_connected
 439          */
 440         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] best_block_updated(byte[] header, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 441                 long ret = bindings.ChannelMonitor_best_block_updated(this.ptr, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(header, 80)), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 442                 GC.KeepAlive(this);
 443                 GC.KeepAlive(header);
 444                 GC.KeepAlive(height);
 445                 GC.KeepAlive(broadcaster);
 446                 GC.KeepAlive(fee_estimator);
 447                 GC.KeepAlive(logger);
 448                 if (ret >= 0 && ret <= 4096) { return null; }
 449                 int ret_conv_49_len = InternalUtils.getArrayLength(ret);
 450                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len];
 451                 for (int x = 0; x < ret_conv_49_len; x++) {
 452                         long ret_conv_49 = InternalUtils.getU64ArrayElem(ret, x);
 453                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49);
 454                         if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.AddLast(this); };
 455                         ret_conv_49_arr[x] = ret_conv_49_hu_conv;
 456                 }
 457                 bindings.free_buffer(ret);
 458                 if (this != null) { this.ptrs_to.AddLast(broadcaster); };
 459                 if (this != null) { this.ptrs_to.AddLast(fee_estimator); };
 460                 if (this != null) { this.ptrs_to.AddLast(logger); };
 461                 return ret_conv_49_arr;
 462         }
 463
 464         /**
 465          * Returns the set of txids that should be monitored for re-organization out of the chain.
 466          */
 467         public ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ[] get_relevant_txids() {
 468                 long ret = bindings.ChannelMonitor_get_relevant_txids(this.ptr);
 469                 GC.KeepAlive(this);
 470                 if (ret >= 0 && ret <= 4096) { return null; }
 471                 int ret_conv_54_len = InternalUtils.getArrayLength(ret);
 472                 ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ[] ret_conv_54_arr = new ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ[ret_conv_54_len];
 473                 for (int c = 0; c < ret_conv_54_len; c++) {
 474                         long ret_conv_54 = InternalUtils.getU64ArrayElem(ret, c);
 475                         ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ ret_conv_54_hu_conv = new ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ(null, ret_conv_54);
 476                         if (ret_conv_54_hu_conv != null) { ret_conv_54_hu_conv.ptrs_to.AddLast(this); };
 477                         ret_conv_54_arr[c] = ret_conv_54_hu_conv;
 478                 }
 479                 bindings.free_buffer(ret);
 480                 return ret_conv_54_arr;
 481         }
 482
 483         /**
 484          * Gets the latest best block which was connected either via the [`chain::Listen`] or
 485          * [`chain::Confirm`] interfaces.
 486          */
 487         public BestBlock current_best_block() {
 488                 long ret = bindings.ChannelMonitor_current_best_block(this.ptr);
 489                 GC.KeepAlive(this);
 490                 if (ret >= 0 && ret <= 4096) { return null; }
 491                 org.ldk.structs.BestBlock ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.BestBlock(null, ret); }
 492                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
 493                 return ret_hu_conv;
 494         }
 495
 496         /**
 497          * Triggers rebroadcasts/fee-bumps of pending claims from a force-closed channel. This is
 498          * crucial in preventing certain classes of pinning attacks, detecting substantial mempool
 499          * feerate changes between blocks, and ensuring reliability if broadcasting fails. We recommend
 500          * invoking this every 30 seconds, or lower if running in an environment with spotty
 501          * connections, like on mobile.
 502          */
 503         public void rebroadcast_pending_claims(org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 504                 bindings.ChannelMonitor_rebroadcast_pending_claims(this.ptr, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 505                 GC.KeepAlive(this);
 506                 GC.KeepAlive(broadcaster);
 507                 GC.KeepAlive(fee_estimator);
 508                 GC.KeepAlive(logger);
 509                 if (this != null) { this.ptrs_to.AddLast(broadcaster); };
 510                 if (this != null) { this.ptrs_to.AddLast(fee_estimator); };
 511                 if (this != null) { this.ptrs_to.AddLast(logger); };
 512         }
 513
 514         /**
 515          * Returns the descriptors for relevant outputs (i.e., those that we can spend) within the
 516          * transaction if they exist and the transaction has at least [`ANTI_REORG_DELAY`]
 517          * confirmations. For [`SpendableOutputDescriptor::DelayedPaymentOutput`] descriptors to be
 518          * returned, the transaction must have at least `max(ANTI_REORG_DELAY, to_self_delay)`
 519          * confirmations.
 520          *
 521          * Descriptors returned by this method are primarily exposed via [`Event::SpendableOutputs`]
 522          * once they are no longer under reorg risk. This method serves as a way to retrieve these
 523          * descriptors at a later time, either for historical purposes, or to replay any
 524          * missed/unhandled descriptors. For the purpose of gathering historical records, if the
 525          * channel close has fully resolved (i.e., [`ChannelMonitor::get_claimable_balances`] returns
 526          * an empty set), you can retrieve all spendable outputs by providing all descendant spending
 527          * transactions starting from the channel's funding transaction and going down three levels.
 528          *
 529          * `tx` is a transaction we'll scan the outputs of. Any transaction can be provided. If any
 530          * outputs which can be spent by us are found, at least one descriptor is returned.
 531          *
 532          * `confirmation_height` must be the height of the block in which `tx` was included in.
 533          */
 534         public SpendableOutputDescriptor[] get_spendable_outputs(byte[] tx, int confirmation_height) {
 535                 long ret = bindings.ChannelMonitor_get_spendable_outputs(this.ptr, InternalUtils.encodeUint8Array(tx), confirmation_height);
 536                 GC.KeepAlive(this);
 537                 GC.KeepAlive(tx);
 538                 GC.KeepAlive(confirmation_height);
 539                 if (ret >= 0 && ret <= 4096) { return null; }
 540                 int ret_conv_27_len = InternalUtils.getArrayLength(ret);
 541                 SpendableOutputDescriptor[] ret_conv_27_arr = new SpendableOutputDescriptor[ret_conv_27_len];
 542                 for (int b = 0; b < ret_conv_27_len; b++) {
 543                         long ret_conv_27 = InternalUtils.getU64ArrayElem(ret, b);
 544                         org.ldk.structs.SpendableOutputDescriptor ret_conv_27_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(ret_conv_27);
 545                         if (ret_conv_27_hu_conv != null) { ret_conv_27_hu_conv.ptrs_to.AddLast(this); };
 546                         ret_conv_27_arr[b] = ret_conv_27_hu_conv;
 547                 }
 548                 bindings.free_buffer(ret);
 549                 return ret_conv_27_arr;
 550         }
 551
 552         /**
 553          * Gets the balances in this channel which are either claimable by us if we were to
 554          * force-close the channel now or which are claimable on-chain (possibly awaiting
 555          * confirmation).
 556          *
 557          * Any balances in the channel which are available on-chain (excluding on-chain fees) are
 558          * included here until an [`Event::SpendableOutputs`] event has been generated for the
 559          * balance, or until our counterparty has claimed the balance and accrued several
 560          * confirmations on the claim transaction.
 561          *
 562          * Note that for `ChannelMonitors` which track a channel which went on-chain with versions of
 563          * LDK prior to 0.0.111, not all or excess balances may be included.
 564          *
 565          * See [`Balance`] for additional details on the types of claimable balances which
 566          * may be returned here and their meanings.
 567          */
 568         public Balance[] get_claimable_balances() {
 569                 long ret = bindings.ChannelMonitor_get_claimable_balances(this.ptr);
 570                 GC.KeepAlive(this);
 571                 if (ret >= 0 && ret <= 4096) { return null; }
 572                 int ret_conv_9_len = InternalUtils.getArrayLength(ret);
 573                 Balance[] ret_conv_9_arr = new Balance[ret_conv_9_len];
 574                 for (int j = 0; j < ret_conv_9_len; j++) {
 575                         long ret_conv_9 = InternalUtils.getU64ArrayElem(ret, j);
 576                         org.ldk.structs.Balance ret_conv_9_hu_conv = org.ldk.structs.Balance.constr_from_ptr(ret_conv_9);
 577                         if (ret_conv_9_hu_conv != null) { ret_conv_9_hu_conv.ptrs_to.AddLast(this); };
 578                         ret_conv_9_arr[j] = ret_conv_9_hu_conv;
 579                 }
 580                 bindings.free_buffer(ret);
 581                 return ret_conv_9_arr;
 582         }
 583
 584 }
 585 } } }