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76 lines
1.9 KiB
76 lines
1.9 KiB
package p2p
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import (
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"fmt"
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"net"
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"strconv"
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"strings"
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"github.com/tendermint/go-crypto"
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)
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const maxNodeInfoSize = 10240 // 10Kb
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type NodeInfo struct {
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PubKey crypto.PubKeyEd25519 `json:"pub_key"`
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Moniker string `json:"moniker"`
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Network string `json:"network"`
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Address string `json:"address"`
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Version string `json:"version"` // major.minor.revision
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Other []string `json:"other"` // other application specific data
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}
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// CONTRACT: two nodes are compactible if the major/minor versions match and network match
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func (info *NodeInfo) CompatibleWith(other *NodeInfo) error {
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iMajor, iMinor, _, iErr := splitVersion(info.Version)
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oMajor, oMinor, _, oErr := splitVersion(other.Version)
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// if our own version number is not formatted right, we messed up
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if iErr != nil {
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return iErr
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}
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// version number must be formatted correctly ("x.x.x")
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if oErr != nil {
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return oErr
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}
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// major version must match
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if iMajor != oMajor {
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return fmt.Errorf("Peer is on a different major version. Got %v, expected %v", oMajor, iMajor)
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}
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// minor version must match
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if iMinor != oMinor {
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return fmt.Errorf("Peer is on a different minor version. Got %v, expected %v", oMinor, iMinor)
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}
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// nodes must be on the same network
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if info.Network != other.Network {
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return fmt.Errorf("Peer is on a different network. Got %v, expected %v", other.Network, info.Network)
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}
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return nil
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}
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func (info *NodeInfo) Host() string {
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host, _, _ := net.SplitHostPort(info.Address)
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return host
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}
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func (info *NodeInfo) Port() int {
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_, port, _ := net.SplitHostPort(info.Address)
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port_i, err := strconv.Atoi(port)
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if err != nil {
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return -1
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}
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return port_i
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}
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func splitVersion(version string) (string, string, string, error) {
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spl := strings.Split(version, ".")
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if len(spl) != 3 {
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return "", "", "", fmt.Errorf("Invalid version format %v", version)
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}
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return spl[0], spl[1], spl[2], nil
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}
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