common

const (
	HashSize                 = 32
	DefaultHashCacheMaxCount = 32768
)

const (
	VERIFY_NODE  = 1 //peer involved in consensus
	SERVICE_NODE = 2 //peer only sync with consensus peer
)

const (
	PER_SEND_LEN        = 1024 * 256 //byte len per conn write
	MAX_BUF_LEN         = 1024 * 256 //the maximum buffer to receive message
	WRITE_DEADLINE      = 5          //deadline of conn write
	REQ_INTERVAL        = 2          //single request max interval in second
	MAX_REQ_RECORD_SIZE = 1000       //the maximum request record size
	MAX_RESP_CACHE_SIZE = 50         //the maximum response cache
)

const (
	MSG_CMD_LEN     = 12               //msg type length in byte
	CHECKSUM_LEN    = 4                //checksum length in byte
	MSG_HDR_LEN     = 24               //msg hdr length in byte
	MAX_MSG_LEN     = 30 * 1024 * 1024 //the maximum message length
	MAX_PAYLOAD_LEN = MAX_MSG_LEN - MSG_HDR_LEN
)

const (
	PROTOCOL_VERSION  = 0     //protocol version
	KEEPALIVE_TIMEOUT = 15    //contact timeout in sec
	DIAL_TIMEOUT      = 6     //connect timeout in sec
	CONN_MONITOR      = 6     //time to retry connect in sec
	CONN_MAX_BACK     = 4000  //max backoff time in micro sec
	MAX_RETRY_COUNT   = 0     //max reconnect time of remote peer
	CHAN_CAPABILITY   = 10000 //channel capability of recv link

	PEER_SEND_CHAN_LENGTH = 1000 // send channel length for every peer
)

const (
	INIT        = 0 //initial
	HAND        = 1 //send verion to peer
	HAND_SHAKE  = 2 //haven`t send verion to peer and receive peer`s version
	HAND_SHAKED = 3 //send verion to peer and receive peer`s version
	ESTABLISH   = 4 //receive peer`s verack
	INACTIVITY  = 5 //link broken
)

const (
	VERSION_TYPE = "version" //peer`s information
	VERACK_TYPE  = "verack"  //ack msg after version recv
	GetADDR_TYPE = "getaddr" //req nbr address from peer
	ADDR_TYPE    = "addr"    //nbr address
	PING_TYPE    = "ping"    //ping  sync height
	PONG_TYPE    = "pong"    //pong  recv nbr height
	//GET_DATA_TYPE   = "getdata"   //req data from peer
	BLOCK_TYPE      = "sig_block" //blk payload
	ID_TYPE         = "id"
	REQ_ID_TYPE     = "req_id"
	TX_TYPE         = "sig_trx"    //transaction
	DISCONNECT_TYPE = "disconnect" //peer disconnect info raise by link

	CONSENSUS_TYPE  = "consensus"
	CHECKPOINT_TYPE = "checkpoint"

	REQUEST_OUT_OF_RANGE_IDS_TYPE = "future_ids"
	REQUEST_BLOCK_BATCH_TYPE      = "sigblk_batch"
	DETECT_FORMER_IDS_TYPE        = "former_ids"
	CLEAR_OUT_OF_RABGE_STATE      = "clear_state"
)

const (
	MaxTrxCountInBloomFiler  = 1000000  // max cache trx count
	BloomFilterOfRecvTrxArgM = 14377588 // bloom filter bit size
	BloomFilterOfRecvTrxArgK = 10       // bloom filter hash func num

	BATCH_LENGTH      = 50 // length of id batch or block batch
	BLOCKS_SIZE_LIMIT = constants.MaxBlockSize + constants.MaxBlockSizeTolerance
	MAX_BLOCK_COUNT   = 50 // max block count
)

const (
	MAX_ADDR_NODE_CNT = 64 //the maximum peer address from msg
)