peer_service.proto

syntax = "proto3";
package peerservice;



// peer service specific message:
message Heartbeat {
    bytes gmroot = 1; // highest known global merkle root
    int64 height = 2; // highest known ledger height

    // we have to identify the peer somehow
    // TODO:  bad solution, because this can be forged.
    // it should not be signed, because this is big additional load for server.
    bytes pubkey = 3; // public key of peer who is sending heartbeat
}


service PeerService {
    // any peer is able to request heartbeat from any other peer
    // it should send its own state: <merkle_root, height>
    // answer is peer's <merkle_root, height>
    rpc RequestHeartbeat (Heartbeat) returns (Heartbeat) {}
}