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 Version string `json:"version"` // major.minor.revision
21 Other []string `json:"other"` // other application specific data
24 // CompatibleWith checks if two NodeInfo are compatible with eachother.
25 // CONTRACT: two nodes are compatible if the major version matches and network match
26 // and they have at least one channel in common.
27 func (info *NodeInfo) CompatibleWith(other *NodeInfo) error {
28 iMajor, iMinor, _, iErr := splitVersion(info.Version)
29 oMajor, oMinor, _, oErr := splitVersion(other.Version)
31 // if our own version number is not formatted right, we messed up
36 // version number must be formatted correctly ("x.x.x")
41 // major version must match
43 return fmt.Errorf("Peer is on a different major version. Got %v, expected %v", oMajor, iMajor)
46 // minor version must match
48 return fmt.Errorf("Peer is on a different minor version. Got %v, expected %v", oMinor, iMinor)
51 // nodes must be on the same network
52 if info.Network != other.Network {
53 return fmt.Errorf("Peer is on a different network. Got %v, expected %v", other.Network, info.Network)
59 //ListenHost peer listener ip address
60 func (info *NodeInfo) ListenHost() string {
61 host, _, _ := net.SplitHostPort(info.ListenAddr)
65 //ListenPort peer listener port
66 func (info *NodeInfo) ListenPort() int {
67 _, port, _ := net.SplitHostPort(info.ListenAddr)
68 portInt, err := strconv.Atoi(port)
75 //String representation
76 func (info NodeInfo) String() string {
77 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)
80 func splitVersion(version string) (string, string, string, error) {
81 spl := strings.Split(version, ".")
83 return "", "", "", fmt.Errorf("Invalid version format %v", version)
85 return spl[0], spl[1], spl[2], nil