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syntax = "proto3";

package neutrinorpc;

option go_package = "github.com/lightningnetwork/lnd/lnrpc/neutrinorpc";

// NeutrinoKit is a service that can be used to get information about the
// current state of the neutrino instance, fetch blocks and add/remove peers.
service NeutrinoKit {
    /*
    Status returns the status of the light client neutrino instance,
    along with height and hash of the best block, and a list of connected
    peers.
    */
    rpc Status (StatusRequest) returns (StatusResponse);

    /*
    AddPeer adds a new peer that has already been connected to the server.
    */
    rpc AddPeer (AddPeerRequest) returns (AddPeerResponse);

    /*
    DisconnectPeer disconnects a peer by target address. Both outbound and
    inbound nodes will be searched for the target node. An error message will
    be returned if the peer was not found.
    */
    rpc DisconnectPeer (DisconnectPeerRequest) returns (DisconnectPeerResponse);

    /*
    IsBanned returns true if the peer is banned, otherwise false.
    */
    rpc IsBanned (IsBannedRequest) returns (IsBannedResponse);

    /*
    GetBlockHeader returns a block header with a particular block hash.
    */
    rpc GetBlockHeader (GetBlockHeaderRequest) returns (GetBlockHeaderResponse);

    /*
    GetBlock returns a block with a particular block hash.
    */
    rpc GetBlock (GetBlockRequest) returns (GetBlockResponse);

    /*
    GetCFilter returns a compact filter from a block.
    */
    rpc GetCFilter (GetCFilterRequest) returns (GetCFilterResponse);

    /*
    Deprecated, use chainrpc.GetBlockHash instead.
    GetBlockHash returns the header hash of a block at a given height.
    */
    rpc GetBlockHash (GetBlockHashRequest) returns (GetBlockHashResponse) {
        option deprecated = true;
    }
}

message StatusRequest {
}

message StatusResponse {
    // Indicates whether the neutrino backend is active or not.
    bool active = 1;

    // Is fully synced.
    bool synced = 2;

    // Best block height.
    int32 block_height = 3;

    // Best block hash.
    string block_hash = 4;

    // Connected peers.
    repeated string peers = 5;
}

message AddPeerRequest {
    // Peer to add.
    string peer_addrs = 1;
}

message AddPeerResponse {
}

message DisconnectPeerRequest {
    // Peer to disconnect.
    string peer_addrs = 1;
}

message DisconnectPeerResponse {
}

message IsBannedRequest {
    // Peer to lookup.
    string peer_addrs = 1;
}

message IsBannedResponse {
    bool banned = 1;
}

message GetBlockHeaderRequest {
    // Block hash in hex notation.
    string hash = 1;
}

message GetBlockHeaderResponse {
    // The block hash (same as provided).
    string hash = 1;

    // The number of confirmations.
    int64 confirmations = 2;

    // The block size excluding witness data.
    int64 stripped_size = 3;

    // The block size (bytes).
    int64 size = 4;

    // The block weight as defined in BIP 141.
    int64 weight = 5;

    // The block height or index.
    int32 height = 6;

    // The block version.
    int32 version = 7;

    // The block version.
    string version_hex = 8;

    // The merkle root.
    string merkleroot = 9;

    // The block time in seconds since epoch (Jan 1 1970 GMT).
    int64 time = 10;

    // The nonce.
    uint32 nonce = 11;

    // The bits in hex notation.
    string bits = 12;

    // The number of transactions in the block.
    int32 ntx = 13;

    // The hash of the previous block.
    string previous_block_hash = 14;

    // The raw hex of the block.
    bytes raw_hex = 15;
}

message GetBlockRequest {
    // Block hash in hex notation.
    string hash = 1;
}

message GetBlockResponse {
    // The block hash (same as provided).
    string hash = 1;

    // The number of confirmations.
    int64 confirmations = 2;

    // The block size excluding witness data.
    int64 stripped_size = 3;

    // The block size (bytes).
    int64 size = 4;

    // The block weight as defined in BIP 141.
    int64 weight = 5;

    // The block height or index.
    int32 height = 6;

    // The block version.
    int32 version = 7;

    // The block version.
    string version_hex = 8;

    // The merkle root.
    string merkleroot = 9;

    // List of transaction ids.
    repeated string tx = 10;

    // The block time in seconds since epoch (Jan 1 1970 GMT).
    int64 time = 11;

    // The nonce.
    uint32 nonce = 12;

    // The bits in hex notation.
    string bits = 13;

    // The number of transactions in the block.
    int32 ntx = 14;

    // The hash of the previous block.
    string previous_block_hash = 15;

    // The raw hex of the block.
    bytes raw_hex = 16;
}

message GetCFilterRequest {
    // Block hash in hex notation.
    string hash = 1;
}

message GetCFilterResponse {
    // GCS filter.
    bytes filter = 1;
}

message GetBlockHashRequest {
    // The block height or index.
    int32 height = 1;
}

message GetBlockHashResponse {
    // The block hash.
    string hash = 1;
}