53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
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package util
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import (
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"fmt"
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"strconv"
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"strings"
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)
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// Endpoint host + port of a node, compatible with net.Addr.
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type Endpoint struct {
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IP [16]byte // TODO: make a uint128 type
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Port uint16
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}
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// EndpointFromString returns an Endpoint from the given string.
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// For now this only handles the most simple hostport form.
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// e.g. 127.0.0.1:3000
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// This should be enough to work with for now.
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func EndpointFromString(s string) (Endpoint, error) {
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hostPort := strings.Split(s, ":")
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if len(hostPort) != 2 {
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return Endpoint{}, fmt.Errorf("invalid address string: %s", s)
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}
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host := hostPort[0]
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port := hostPort[1]
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ch := strings.Split(host, ".")
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buf := [16]byte{}
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var n int
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for i := 0; i < len(ch); i++ {
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n = 12 + i
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nn, _ := strconv.Atoi(ch[i])
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buf[n] = byte(nn)
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}
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p, _ := strconv.Atoi(port)
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return Endpoint{buf, uint16(p)}, nil
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}
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// Network implements the net.Addr interface.
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func (e Endpoint) Network() string { return "tcp" }
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// String implements the net.Addr interface.
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func (e Endpoint) String() string {
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b := make([]uint8, 4)
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for i := 0; i < 4; i++ {
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b[i] = byte(e.IP[len(e.IP)-4+i])
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}
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return fmt.Sprintf("%d.%d.%d.%d:%d", b[0], b[1], b[2], b[3], e.Port)
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}
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