syntax = "proto3"; import "rpc.proto"; package routerrpc; option go_package = "github.com/lightningnetwork/lnd/lnrpc/routerrpc"; // Router is a service that offers advanced interaction with the router // subsystem of the daemon. service Router { /* SendPaymentV2 attempts to route a payment described by the passed PaymentRequest to the final destination. The call returns a stream of payment updates. */ rpc SendPaymentV2 (SendPaymentRequest) returns (stream lnrpc.Payment); /* TrackPaymentV2 returns an update stream for the payment identified by the payment hash. */ rpc TrackPaymentV2 (TrackPaymentRequest) returns (stream lnrpc.Payment); /* EstimateRouteFee allows callers to obtain a lower bound w.r.t how much it may cost to send an HTLC to the target end destination. */ rpc EstimateRouteFee (RouteFeeRequest) returns (RouteFeeResponse); /* Deprecated, use SendToRouteV2. SendToRoute attempts to make a payment via the specified route. This method differs from SendPayment in that it allows users to specify a full route manually. This can be used for things like rebalancing, and atomic swaps. It differs from the newer SendToRouteV2 in that it doesn't return the full HTLC information. */ rpc SendToRoute (SendToRouteRequest) returns (SendToRouteResponse) { option deprecated = true; } /* SendToRouteV2 attempts to make a payment via the specified route. This method differs from SendPayment in that it allows users to specify a full route manually. This can be used for things like rebalancing, and atomic swaps. */ rpc SendToRouteV2 (SendToRouteRequest) returns (lnrpc.HTLCAttempt); /* ResetMissionControl clears all mission control state and starts with a clean slate. */ rpc ResetMissionControl (ResetMissionControlRequest) returns (ResetMissionControlResponse); /* QueryMissionControl exposes the internal mission control state to callers. It is a development feature. */ rpc QueryMissionControl (QueryMissionControlRequest) returns (QueryMissionControlResponse); /* XImportMissionControl is an experimental API that imports the state provided to the internal mission control's state, using all results which are more recent than our existing values. These values will only be imported in-memory, and will not be persisted across restarts. */ rpc XImportMissionControl (XImportMissionControlRequest) returns (XImportMissionControlResponse); /* GetMissionControlConfig returns mission control's current config. */ rpc GetMissionControlConfig (GetMissionControlConfigRequest) returns (GetMissionControlConfigResponse); /* SetMissionControlConfig will set mission control's config, if the config provided is valid. */ rpc SetMissionControlConfig (SetMissionControlConfigRequest) returns (SetMissionControlConfigResponse); /* QueryProbability returns the current success probability estimate for a given node pair and amount. */ rpc QueryProbability (QueryProbabilityRequest) returns (QueryProbabilityResponse); /* BuildRoute builds a fully specified route based on a list of hop public keys. It retrieves the relevant channel policies from the graph in order to calculate the correct fees and time locks. */ rpc BuildRoute (BuildRouteRequest) returns (BuildRouteResponse); /* SubscribeHtlcEvents creates a uni-directional stream from the server to the client which delivers a stream of htlc events. */ rpc SubscribeHtlcEvents (SubscribeHtlcEventsRequest) returns (stream HtlcEvent); /* Deprecated, use SendPaymentV2. SendPayment attempts to route a payment described by the passed PaymentRequest to the final destination. The call returns a stream of payment status updates. */ rpc SendPayment (SendPaymentRequest) returns (stream PaymentStatus) { option deprecated = true; } /* Deprecated, use TrackPaymentV2. TrackPayment returns an update stream for the payment identified by the payment hash. */ rpc TrackPayment (TrackPaymentRequest) returns (stream PaymentStatus) { option deprecated = true; } /** HtlcInterceptor dispatches a bi-directional streaming RPC in which Forwarded HTLC requests are sent to the client and the client responds with a boolean that tells LND if this htlc should be intercepted. In case of interception, the htlc can be either settled, cancelled or resumed later by using the ResolveHoldForward endpoint. */ rpc HtlcInterceptor (stream ForwardHtlcInterceptResponse) returns (stream ForwardHtlcInterceptRequest); /* UpdateChanStatus attempts to manually set the state of a channel (enabled, disabled, or auto). A manual "disable" request will cause the channel to stay disabled until a subsequent manual request of either "enable" or "auto". */ rpc UpdateChanStatus (UpdateChanStatusRequest) returns (UpdateChanStatusResponse); } message SendPaymentRequest { // The identity pubkey of the payment recipient bytes dest = 1; /* Number of satoshis to send. The fields amt and amt_msat are mutually exclusive. */ int64 amt = 2; /* Number of millisatoshis to send. The fields amt and amt_msat are mutually exclusive. */ int64 amt_msat = 12; // The hash to use within the payment's HTLC bytes payment_hash = 3; /* The CLTV delta from the current height that should be used to set the timelock for the final hop. */ int32 final_cltv_delta = 4; // An optional payment addr to be included within the last hop of the route. bytes payment_addr = 20; /* A bare-bones invoice for a payment within the Lightning Network. With the details of the invoice, the sender has all the data necessary to send a payment to the recipient. The amount in the payment request may be zero. In that case it is required to set the amt field as well. If no payment request is specified, the following fields are required: dest, amt and payment_hash. */ string payment_request = 5; /* An upper limit on the amount of time we should spend when attempting to fulfill the payment. This is expressed in seconds. If we cannot make a successful payment within this time frame, an error will be returned. This field must be non-zero. */ int32 timeout_seconds = 6; /* The maximum number of satoshis that will be paid as a fee of the payment. If this field is left to the default value of 0, only zero-fee routes will be considered. This usually means single hop routes connecting directly to the destination. To send the payment without a fee limit, use max int here. The fields fee_limit_sat and fee_limit_msat are mutually exclusive. */ int64 fee_limit_sat = 7; /* The maximum number of millisatoshis that will be paid as a fee of the payment. If this field is left to the default value of 0, only zero-fee routes will be considered. This usually means single hop routes connecting directly to the destination. To send the payment without a fee limit, use max int here. The fields fee_limit_sat and fee_limit_msat are mutually exclusive. */ int64 fee_limit_msat = 13; /* Deprecated, use outgoing_chan_ids. The channel id of the channel that must be taken to the first hop. If zero, any channel may be used (unless outgoing_chan_ids are set). */ uint64 outgoing_chan_id = 8 [jstype = JS_STRING, deprecated = true]; /* The channel ids of the channels are allowed for the first hop. If empty, any channel may be used. */ repeated uint64 outgoing_chan_ids = 19; /* The pubkey of the last hop of the route. If empty, any hop may be used. */ bytes last_hop_pubkey = 14; /* An optional maximum total time lock for the route. This should not exceed lnd's `--max-cltv-expiry` setting. If zero, then the value of `--max-cltv-expiry` is enforced. */ int32 cltv_limit = 9; /* Optional route hints to reach the destination through private channels. */ repeated lnrpc.RouteHint route_hints = 10; /* An optional field that can be used to pass an arbitrary set of TLV records to a peer which understands the new records. This can be used to pass application specific data during the payment attempt. Record types are required to be in the custom range >= 65536. When using REST, the values must be encoded as base64. */ map dest_custom_records = 11; // If set, circular payments to self are permitted. bool allow_self_payment = 15; /* Features assumed to be supported by the final node. All transitive feature dependencies must also be set properly. For a given feature bit pair, either optional or remote may be set, but not both. If this field is nil or empty, the router will try to load destination features from the graph as a fallback. */ repeated lnrpc.FeatureBit dest_features = 16; /* The maximum number of partial payments that may be use to complete the full amount. */ uint32 max_parts = 17; /* If set, only the final payment update is streamed back. Intermediate updates that show which htlcs are still in flight are suppressed. */ bool no_inflight_updates = 18; /* The largest payment split that should be attempted when making a payment if splitting is necessary. Setting this value will effectively cause lnd to split more aggressively, vs only when it thinks it needs to. Note that this value is in milli-satoshis. */ uint64 max_shard_size_msat = 21; } message TrackPaymentRequest { // The hash of the payment to look up. bytes payment_hash = 1; /* If set, only the final payment update is streamed back. Intermediate updates that show which htlcs are still in flight are suppressed. */ bool no_inflight_updates = 2; } message RouteFeeRequest { /* The destination once wishes to obtain a routing fee quote to. */ bytes dest = 1; /* The amount one wishes to send to the target destination. */ int64 amt_sat = 2; } message RouteFeeResponse { /* A lower bound of the estimated fee to the target destination within the network, expressed in milli-satoshis. */ int64 routing_fee_msat = 1; /* An estimate of the worst case time delay that can occur. Note that callers will still need to factor in the final CLTV delta of the last hop into this value. */ int64 time_lock_delay = 2; } message SendToRouteRequest { // The payment hash to use for the HTLC. bytes payment_hash = 1; // Route that should be used to attempt to complete the payment. lnrpc.Route route = 2; } message SendToRouteResponse { // The preimage obtained by making the payment. bytes preimage = 1; // The failure message in case the payment failed. lnrpc.Failure failure = 2; } message ResetMissionControlRequest { } message ResetMissionControlResponse { } message QueryMissionControlRequest { } // QueryMissionControlResponse contains mission control state. message QueryMissionControlResponse { reserved 1; // Node pair-level mission control state. repeated PairHistory pairs = 2; } message XImportMissionControlRequest { // Node pair-level mission control state to be imported. repeated PairHistory pairs = 1; } message XImportMissionControlResponse { } // PairHistory contains the mission control state for a particular node pair. message PairHistory { // The source node pubkey of the pair. bytes node_from = 1; // The destination node pubkey of the pair. bytes node_to = 2; reserved 3, 4, 5, 6; PairData history = 7; } message PairData { // Time of last failure. int64 fail_time = 1; /* Lowest amount that failed to forward rounded to whole sats. This may be set to zero if the failure is independent of amount. */ int64 fail_amt_sat = 2; /* Lowest amount that failed to forward in millisats. This may be set to zero if the failure is independent of amount. */ int64 fail_amt_msat = 4; reserved 3; // Time of last success. int64 success_time = 5; // Highest amount that we could successfully forward rounded to whole sats. int64 success_amt_sat = 6; // Highest amount that we could successfully forward in millisats. int64 success_amt_msat = 7; } message GetMissionControlConfigRequest { } message GetMissionControlConfigResponse { /* Mission control's currently active config. */ MissionControlConfig config = 1; } message SetMissionControlConfigRequest { /* The config to set for mission control. Note that all values *must* be set, because the full config will be applied. */ MissionControlConfig config = 1; } message SetMissionControlConfigResponse { } message MissionControlConfig { /* The amount of time mission control will take to restore a penalized node or channel back to 50% success probability, expressed in seconds. Setting this value to a higher value will penalize failures for longer, making mission control less likely to route through nodes and channels that we have previously recorded failures for. */ uint64 half_life_seconds = 1; /* The probability of success mission control should assign to hop in a route where it has no other information available. Higher values will make mission control more willing to try hops that we have no information about, lower values will discourage trying these hops. */ float hop_probability = 2; /* The importance that mission control should place on historical results, expressed as a value in [0;1]. Setting this value to 1 will ignore all historical payments and just use the hop probability to assess the probability of success for each hop. A zero value ignores hop probability completely and relies entirely on historical results, unless none are available. */ float weight = 3; /* The maximum number of payment results that mission control will store. */ uint32 maximum_payment_results = 4; /* The minimum time that must have passed since the previously recorded failure before we raise the failure amount. */ uint64 minimum_failure_relax_interval = 5; } message QueryProbabilityRequest { // The source node pubkey of the pair. bytes from_node = 1; // The destination node pubkey of the pair. bytes to_node = 2; // The amount for which to calculate a probability. int64 amt_msat = 3; } message QueryProbabilityResponse { // The success probability for the requested pair. double probability = 1; // The historical data for the requested pair. PairData history = 2; } message BuildRouteRequest { /* The amount to send expressed in msat. If set to zero, the minimum routable amount is used. */ int64 amt_msat = 1; /* CLTV delta from the current height that should be used for the timelock of the final hop */ int32 final_cltv_delta = 2; /* The channel id of the channel that must be taken to the first hop. If zero, any channel may be used. */ uint64 outgoing_chan_id = 3 [jstype = JS_STRING]; /* A list of hops that defines the route. This does not include the source hop pubkey. */ repeated bytes hop_pubkeys = 4; // An optional payment addr to be included within the last hop of the route. bytes payment_addr = 5; } message BuildRouteResponse { /* Fully specified route that can be used to execute the payment. */ lnrpc.Route route = 1; } message SubscribeHtlcEventsRequest { } /* HtlcEvent contains the htlc event that was processed. These are served on a best-effort basis; events are not persisted, delivery is not guaranteed (in the event of a crash in the switch, forward events may be lost) and some events may be replayed upon restart. Events consumed from this package should be de-duplicated by the htlc's unique combination of incoming and outgoing channel id and htlc id. [EXPERIMENTAL] */ message HtlcEvent { /* The short channel id that the incoming htlc arrived at our node on. This value is zero for sends. */ uint64 incoming_channel_id = 1; /* The short channel id that the outgoing htlc left our node on. This value is zero for receives. */ uint64 outgoing_channel_id = 2; /* Incoming id is the index of the incoming htlc in the incoming channel. This value is zero for sends. */ uint64 incoming_htlc_id = 3; /* Outgoing id is the index of the outgoing htlc in the outgoing channel. This value is zero for receives. */ uint64 outgoing_htlc_id = 4; /* The time in unix nanoseconds that the event occurred. */ uint64 timestamp_ns = 5; enum EventType { UNKNOWN = 0; SEND = 1; RECEIVE = 2; FORWARD = 3; } /* The event type indicates whether the htlc was part of a send, receive or forward. */ EventType event_type = 6; oneof event { ForwardEvent forward_event = 7; ForwardFailEvent forward_fail_event = 8; SettleEvent settle_event = 9; LinkFailEvent link_fail_event = 10; } } message HtlcInfo { // The timelock on the incoming htlc. uint32 incoming_timelock = 1; // The timelock on the outgoing htlc. uint32 outgoing_timelock = 2; // The amount of the incoming htlc. uint64 incoming_amt_msat = 3; // The amount of the outgoing htlc. uint64 outgoing_amt_msat = 4; } message ForwardEvent { // Info contains details about the htlc that was forwarded. HtlcInfo info = 1; } message ForwardFailEvent { } message SettleEvent { } message LinkFailEvent { // Info contains details about the htlc that we failed. HtlcInfo info = 1; // FailureCode is the BOLT error code for the failure. lnrpc.Failure.FailureCode wire_failure = 2; /* FailureDetail provides additional information about the reason for the failure. This detail enriches the information provided by the wire message and may be 'no detail' if the wire message requires no additional metadata. */ FailureDetail failure_detail = 3; // A string representation of the link failure. string failure_string = 4; } enum FailureDetail { UNKNOWN = 0; NO_DETAIL = 1; ONION_DECODE = 2; LINK_NOT_ELIGIBLE = 3; ON_CHAIN_TIMEOUT = 4; HTLC_EXCEEDS_MAX = 5; INSUFFICIENT_BALANCE = 6; INCOMPLETE_FORWARD = 7; HTLC_ADD_FAILED = 8; FORWARDS_DISABLED = 9; INVOICE_CANCELED = 10; INVOICE_UNDERPAID = 11; INVOICE_EXPIRY_TOO_SOON = 12; INVOICE_NOT_OPEN = 13; MPP_INVOICE_TIMEOUT = 14; ADDRESS_MISMATCH = 15; SET_TOTAL_MISMATCH = 16; SET_TOTAL_TOO_LOW = 17; SET_OVERPAID = 18; UNKNOWN_INVOICE = 19; INVALID_KEYSEND = 20; MPP_IN_PROGRESS = 21; CIRCULAR_ROUTE = 22; } enum PaymentState { /* Payment is still in flight. */ IN_FLIGHT = 0; /* Payment completed successfully. */ SUCCEEDED = 1; /* There are more routes to try, but the payment timeout was exceeded. */ FAILED_TIMEOUT = 2; /* All possible routes were tried and failed permanently. Or were no routes to the destination at all. */ FAILED_NO_ROUTE = 3; /* A non-recoverable error has occured. */ FAILED_ERROR = 4; /* Payment details incorrect (unknown hash, invalid amt or invalid final cltv delta) */ FAILED_INCORRECT_PAYMENT_DETAILS = 5; /* Insufficient local balance. */ FAILED_INSUFFICIENT_BALANCE = 6; } message PaymentStatus { // Current state the payment is in. PaymentState state = 1; /* The pre-image of the payment when state is SUCCEEDED. */ bytes preimage = 2; reserved 3; /* The HTLCs made in attempt to settle the payment [EXPERIMENTAL]. */ repeated lnrpc.HTLCAttempt htlcs = 4; } message CircuitKey { /// The id of the channel that the is part of this circuit. uint64 chan_id = 1; /// The index of the incoming htlc in the incoming channel. uint64 htlc_id = 2; } message ForwardHtlcInterceptRequest { /* The key of this forwarded htlc. It defines the incoming channel id and the index in this channel. */ CircuitKey incoming_circuit_key = 1; // The incoming htlc amount. uint64 incoming_amount_msat = 5; // The incoming htlc expiry. uint32 incoming_expiry = 6; /* The htlc payment hash. This value is not guaranteed to be unique per request. */ bytes payment_hash = 2; // The requested outgoing channel id for this forwarded htlc. Because of // non-strict forwarding, this isn't necessarily the channel over which the // packet will be forwarded eventually. A different channel to the same peer // may be selected as well. uint64 outgoing_requested_chan_id = 7; // The outgoing htlc amount. uint64 outgoing_amount_msat = 3; // The outgoing htlc expiry. uint32 outgoing_expiry = 4; // Any custom records that were present in the payload. map custom_records = 8; // The onion blob for the next hop bytes onion_blob = 9; } /** ForwardHtlcInterceptResponse enables the caller to resolve a previously hold forward. The caller can choose either to: - `Resume`: Execute the default behavior (usually forward). - `Reject`: Fail the htlc backwards. - `Settle`: Settle this htlc with a given preimage. */ message ForwardHtlcInterceptResponse { /** The key of this forwarded htlc. It defines the incoming channel id and the index in this channel. */ CircuitKey incoming_circuit_key = 1; // The resolve action for this intercepted htlc. ResolveHoldForwardAction action = 2; // The preimage in case the resolve action is Settle. bytes preimage = 3; } enum ResolveHoldForwardAction { SETTLE = 0; FAIL = 1; RESUME = 2; } message UpdateChanStatusRequest { lnrpc.ChannelPoint chan_point = 1; ChanStatusAction action = 2; } enum ChanStatusAction { ENABLE = 0; DISABLE = 1; AUTO = 2; } message UpdateChanStatusResponse { }