+ struct LDKDecodeError *err;
+} LDKCResult_CounterpartyForwardingInfoDecodeErrorZPtr;
+
+/**
+ * A CResult_CounterpartyForwardingInfoDecodeErrorZ represents the result of a fallible operation,
+ * containing a crate::lightning::ln::channelmanager::CounterpartyForwardingInfo on success and a crate::lightning::ln::msgs::DecodeError on failure.
+ * `result_ok` indicates the overall state, and the contents are provided via `contents`.
+ */
+typedef struct LDKCResult_CounterpartyForwardingInfoDecodeErrorZ {
+ /**
+ * The contents of this CResult_CounterpartyForwardingInfoDecodeErrorZ, accessible via either
+ * `err` or `result` depending on the state of `result_ok`.
+ */
+ union LDKCResult_CounterpartyForwardingInfoDecodeErrorZPtr contents;
+ /**
+ * Whether this CResult_CounterpartyForwardingInfoDecodeErrorZ represents a success state.
+ */
+ bool result_ok;
+} LDKCResult_CounterpartyForwardingInfoDecodeErrorZ;
+
+
+
+/**
+ * Channel parameters which apply to our counterparty. These are split out from [`ChannelDetails`]
+ * to better separate parameters.
+ */
+typedef struct MUST_USE_STRUCT LDKChannelCounterparty {
+ /**
+ * A pointer to the opaque Rust object.
+ * Nearly everywhere, inner must be non-null, however in places where
+ * the Rust equivalent takes an Option, it may be set to null to indicate None.
+ */
+ LDKnativeChannelCounterparty *inner;
+ /**
+ * Indicates that this is the only struct which contains the same pointer.
+ * Rust functions which take ownership of an object provided via an argument require
+ * this to be true and invalidate the object pointed to by inner.
+ */
+ bool is_owned;
+} LDKChannelCounterparty;
+
+/**
+ * The contents of CResult_ChannelCounterpartyDecodeErrorZ
+ */
+typedef union LDKCResult_ChannelCounterpartyDecodeErrorZPtr {
+ /**
+ * A pointer to the contents in the success state.
+ * Reading from this pointer when `result_ok` is not set is undefined.
+ */
+ struct LDKChannelCounterparty *result;
+ /**
+ * A pointer to the contents in the error state.
+ * Reading from this pointer when `result_ok` is set is undefined.
+ */
+ struct LDKDecodeError *err;
+} LDKCResult_ChannelCounterpartyDecodeErrorZPtr;
+
+/**
+ * A CResult_ChannelCounterpartyDecodeErrorZ represents the result of a fallible operation,
+ * containing a crate::lightning::ln::channelmanager::ChannelCounterparty on success and a crate::lightning::ln::msgs::DecodeError on failure.
+ * `result_ok` indicates the overall state, and the contents are provided via `contents`.
+ */
+typedef struct LDKCResult_ChannelCounterpartyDecodeErrorZ {
+ /**
+ * The contents of this CResult_ChannelCounterpartyDecodeErrorZ, accessible via either
+ * `err` or `result` depending on the state of `result_ok`.
+ */
+ union LDKCResult_ChannelCounterpartyDecodeErrorZPtr contents;
+ /**
+ * Whether this CResult_ChannelCounterpartyDecodeErrorZ represents a success state.
+ */
+ bool result_ok;
+} LDKCResult_ChannelCounterpartyDecodeErrorZ;
+
+/**
+ * The contents of CResult_ChannelDetailsDecodeErrorZ
+ */
+typedef union LDKCResult_ChannelDetailsDecodeErrorZPtr {
+ /**
+ * A pointer to the contents in the success state.
+ * Reading from this pointer when `result_ok` is not set is undefined.
+ */
+ struct LDKChannelDetails *result;
+ /**
+ * A pointer to the contents in the error state.
+ * Reading from this pointer when `result_ok` is set is undefined.
+ */
+ struct LDKDecodeError *err;
+} LDKCResult_ChannelDetailsDecodeErrorZPtr;
+
+/**
+ * A CResult_ChannelDetailsDecodeErrorZ represents the result of a fallible operation,
+ * containing a crate::lightning::ln::channelmanager::ChannelDetails on success and a crate::lightning::ln::msgs::DecodeError on failure.
+ * `result_ok` indicates the overall state, and the contents are provided via `contents`.
+ */
+typedef struct LDKCResult_ChannelDetailsDecodeErrorZ {
+ /**
+ * The contents of this CResult_ChannelDetailsDecodeErrorZ, accessible via either
+ * `err` or `result` depending on the state of `result_ok`.
+ */
+ union LDKCResult_ChannelDetailsDecodeErrorZPtr contents;
+ /**
+ * Whether this CResult_ChannelDetailsDecodeErrorZ represents a success state.
+ */
+ bool result_ok;
+} LDKCResult_ChannelDetailsDecodeErrorZ;
+
+
+
+/**
+ * Route hints used in constructing invoices for [phantom node payents].
+ *
+ * [phantom node payments]: crate::chain::keysinterface::PhantomKeysManager
+ */
+typedef struct MUST_USE_STRUCT LDKPhantomRouteHints {
+ /**
+ * A pointer to the opaque Rust object.
+ * Nearly everywhere, inner must be non-null, however in places where
+ * the Rust equivalent takes an Option, it may be set to null to indicate None.
+ */
+ LDKnativePhantomRouteHints *inner;
+ /**
+ * Indicates that this is the only struct which contains the same pointer.
+ * Rust functions which take ownership of an object provided via an argument require
+ * this to be true and invalidate the object pointed to by inner.
+ */
+ bool is_owned;
+} LDKPhantomRouteHints;
+
+/**
+ * The contents of CResult_PhantomRouteHintsDecodeErrorZ
+ */
+typedef union LDKCResult_PhantomRouteHintsDecodeErrorZPtr {
+ /**
+ * A pointer to the contents in the success state.
+ * Reading from this pointer when `result_ok` is not set is undefined.
+ */
+ struct LDKPhantomRouteHints *result;
+ /**
+ * A pointer to the contents in the error state.
+ * Reading from this pointer when `result_ok` is set is undefined.
+ */
+ struct LDKDecodeError *err;
+} LDKCResult_PhantomRouteHintsDecodeErrorZPtr;
+
+/**
+ * A CResult_PhantomRouteHintsDecodeErrorZ represents the result of a fallible operation,
+ * containing a crate::lightning::ln::channelmanager::PhantomRouteHints on success and a crate::lightning::ln::msgs::DecodeError on failure.
+ * `result_ok` indicates the overall state, and the contents are provided via `contents`.
+ */
+typedef struct LDKCResult_PhantomRouteHintsDecodeErrorZ {
+ /**
+ * The contents of this CResult_PhantomRouteHintsDecodeErrorZ, accessible via either
+ * `err` or `result` depending on the state of `result_ok`.
+ */
+ union LDKCResult_PhantomRouteHintsDecodeErrorZPtr contents;
+ /**
+ * Whether this CResult_PhantomRouteHintsDecodeErrorZ represents a success state.
+ */
+ bool result_ok;
+} LDKCResult_PhantomRouteHintsDecodeErrorZ;
+
+/**
+ * A dynamically-allocated array of crate::lightning::chain::channelmonitor::ChannelMonitors of arbitrary size.
+ * This corresponds to std::vector in C++
+ */
+typedef struct LDKCVec_ChannelMonitorZ {
+ /**
+ * The elements in the array.
+ * If datalen is non-0 this must be a valid, non-NULL pointer allocated by malloc().
+ */
+ struct LDKChannelMonitor *data;
+ /**
+ * The number of elements pointed to by `data`.
+ */
+ uintptr_t datalen;
+} LDKCVec_ChannelMonitorZ;
+
+
+
+/**
+ * An update generated by the underlying Channel itself which contains some new information the
+ * ChannelMonitor should be made aware of.
+ */
+typedef struct MUST_USE_STRUCT LDKChannelMonitorUpdate {
+ /**
+ * A pointer to the opaque Rust object.
+ * Nearly everywhere, inner must be non-null, however in places where
+ * the Rust equivalent takes an Option, it may be set to null to indicate None.
+ */
+ LDKnativeChannelMonitorUpdate *inner;
+ /**
+ * Indicates that this is the only struct which contains the same pointer.
+ * Rust functions which take ownership of an object provided via an argument require
+ * this to be true and invalidate the object pointed to by inner.
+ */
+ bool is_owned;
+} LDKChannelMonitorUpdate;
+
+/**
+ * The `Watch` trait defines behavior for watching on-chain activity pertaining to channels as
+ * blocks are connected and disconnected.
+ *
+ * Each channel is associated with a [`ChannelMonitor`]. Implementations of this trait are
+ * responsible for maintaining a set of monitors such that they can be updated accordingly as
+ * channel state changes and HTLCs are resolved. See method documentation for specific
+ * requirements.
+ *
+ * Implementations **must** ensure that updates are successfully applied and persisted upon method
+ * completion. If an update fails with a [`PermanentFailure`], then it must immediately shut down
+ * without taking any further action such as persisting the current state.
+ *
+ * If an implementation maintains multiple instances of a channel's monitor (e.g., by storing
+ * backup copies), then it must ensure that updates are applied across all instances. Otherwise, it
+ * could result in a revoked transaction being broadcast, allowing the counterparty to claim all
+ * funds in the channel. See [`ChannelMonitorUpdateErr`] for more details about how to handle
+ * multiple instances.
+ *
+ * [`PermanentFailure`]: ChannelMonitorUpdateErr::PermanentFailure
+ */
+typedef struct LDKWatch {
+ /**
+ * An opaque pointer which is passed to your function implementations as an argument.
+ * This has no meaning in the LDK, and can be NULL or any other value.
+ */
+ void *this_arg;
+ /**
+ * Watches a channel identified by `funding_txo` using `monitor`.
+ *
+ * Implementations are responsible for watching the chain for the funding transaction along
+ * with any spends of outputs returned by [`get_outputs_to_watch`]. In practice, this means
+ * calling [`block_connected`] and [`block_disconnected`] on the monitor.
+ *
+ * Note: this interface MUST error with `ChannelMonitorUpdateErr::PermanentFailure` if
+ * the given `funding_txo` has previously been registered via `watch_channel`.
+ *
+ * [`get_outputs_to_watch`]: channelmonitor::ChannelMonitor::get_outputs_to_watch
+ * [`block_connected`]: channelmonitor::ChannelMonitor::block_connected
+ * [`block_disconnected`]: channelmonitor::ChannelMonitor::block_disconnected
+ */
+ struct LDKCResult_NoneChannelMonitorUpdateErrZ (*watch_channel)(const void *this_arg, struct LDKOutPoint funding_txo, struct LDKChannelMonitor monitor);
+ /**
+ * Updates a channel identified by `funding_txo` by applying `update` to its monitor.