9 crypto "github.com/tendermint/go-crypto"
12 const maxNodeInfoSize = 10240 // 10Kb
14 //NodeInfo peer node info
15 type NodeInfo struct {
16 PubKey crypto.PubKeyEd25519 `json:"pub_key"`
17 Moniker string `json:"moniker"`
18 Network string `json:"network"`
19 ListenAddr string `json:"listen_addr"`
20 RemoteAddr string `json:"remote_addr"`
21 Version string `json:"version"` // major.minor.revision
22 Other []string `json:"other"` // other application specific data
25 // CompatibleWith checks if two NodeInfo are compatible with eachother.
26 // CONTRACT: two nodes are compatible if the major version matches and network match
27 // and they have at least one channel in common.
28 func (info *NodeInfo) CompatibleWith(other *NodeInfo) error {
29 iMajor, iMinor, _, iErr := splitVersion(info.Version)
30 oMajor, oMinor, _, oErr := splitVersion(other.Version)
32 // if our own version number is not formatted right, we messed up
37 // version number must be formatted correctly ("x.x.x")
42 // major version must match
44 return fmt.Errorf("Peer is on a different major version. Got %v, expected %v", oMajor, iMajor)
47 // minor version must match
49 return fmt.Errorf("Peer is on a different minor version. Got %v, expected %v", oMinor, iMinor)
52 // nodes must be on the same network
53 if info.Network != other.Network {
54 return fmt.Errorf("Peer is on a different network. Got %v, expected %v", other.Network, info.Network)
60 //ListenHost peer listener ip address
61 func (info *NodeInfo) ListenHost() string {
62 host, _, _ := net.SplitHostPort(info.ListenAddr)
66 //ListenPort peer listener port
67 func (info *NodeInfo) ListenPort() int {
68 _, port, _ := net.SplitHostPort(info.ListenAddr)
69 portInt, err := strconv.Atoi(port)
76 //String representation
77 func (info NodeInfo) String() string {
78 return fmt.Sprintf("NodeInfo{pk: %v, moniker: %v, network: %v [listen %v], version: %v (%v)}", info.PubKey, info.Moniker, info.Network, info.ListenAddr, info.Version, info.Other)
81 func splitVersion(version string) (string, string, string, error) {
82 spl := strings.Split(version, ".")
84 return "", "", "", fmt.Errorf("Invalid version format %v", version)
86 return spl[0], spl[1], spl[2], nil