// This structure is used to do book keeping for the peer list and keeps other DATA related to peer
// all peers are servers, means they have exposed a port for connections
// all peers are identified by their endpoint tcp address
// all clients are identified by ther peer id ( however ip-address is used to control amount )
// the following daemon commands interact with the list
// peer_list := print the peer list
// ban address  time  // ban this address for spcific time
// unban address
// enableban address  // by default all addresses are bannable
// disableban address  // this address will never be banned
type Peer struct {
    Address string `json:"address"` // pairs in the ip:port or dns:port, basically  endpoint
    ID      uint64 `json:"peerid"`  // peer id
    Miner   bool   `json:"miner"`   // miner
    //NeverBlacklist    bool    // this address will never be blacklisted
    LastConnected   uint64 `json:"lastconnected"`   // epoch time when it was connected , 0 if never connected
    FailCount       uint64 `json:"failcount"`       // how many times have we failed  (tcp errors)
    ConnectAfter    uint64 `json:"connectafter"`    // we should connect when the following timestamp passes
    BlacklistBefore uint64 `json:"blacklistbefore"` // peer blacklisted till epoch , priority nodes are never blacklisted, 0 if not blacklist
    GoodCount       uint64 `json:"goodcount"`       // how many times peer has been shared with us
    Version         int    `json:"version"`         // version 1 is original C daemon peer, version 2 is golang p2p version
    Whitelist       bool   `json:"whitelist"`
    sync.Mutex
}