neo-go/pkg/util/endpoint.go
Evgeniy Kulikov 630919bf7d Fix typos and warnings for GoReport / GolangCiLinter (#132)
- typos
- gofmt -s
- govet warnings
- golangci-lint run
2019-02-09 16:53:58 +01:00

49 lines
977 B
Go

package util
import (
"fmt"
"strconv"
"strings"
)
// Endpoint host + port of a node, compatible with net.Addr.
type Endpoint struct {
IP [16]byte // TODO: make a uint128 type
Port uint16
}
// NewEndpoint creates an Endpoint from the given string.
func NewEndpoint(s string) (e Endpoint) {
hostPort := strings.Split(s, ":")
if len(hostPort) != 2 {
return e
}
host := hostPort[0]
port := hostPort[1]
ch := strings.Split(host, ".")
buf := [16]byte{}
var n int
for i := 0; i < len(ch); i++ {
n = 12 + i
nn, _ := strconv.Atoi(ch[i])
buf[n] = byte(nn)
}
p, _ := strconv.Atoi(port)
return Endpoint{buf, uint16(p)}
}
// Network implements the net.Addr interface.
func (e Endpoint) Network() string { return "tcp" }
// String implements the net.Addr interface.
func (e Endpoint) String() string {
b := make([]uint8, 4)
for i := 0; i < 4; i++ {
b[i] = e.IP[len(e.IP)-4+i]
}
return fmt.Sprintf("%d.%d.%d.%d:%d", b[0], b[1], b[2], b[3], e.Port)
}