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34 lines
619 B
Go
34 lines
619 B
Go
package network
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import (
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"fmt"
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"net"
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)
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// GetFirstAddressOf returns the first IPv4 address of the supplied interface name.
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func GetFirstAddressOf(name string) (string, error) {
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inf, err := net.InterfaceByName(name)
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if err != nil {
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return "", err
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}
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addrs, err := inf.Addrs()
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if err != nil {
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return "", err
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}
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if len(addrs) <= 0 {
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return "", fmt.Errorf("No address found for %s", name)
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}
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for _, addr := range addrs {
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switch v := addr.(type) {
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case *net.IPNet:
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if ip := v.IP.To4(); ip != nil {
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return v.IP.String(), nil
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}
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}
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}
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return "", fmt.Errorf("No address found for %s", name)
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}
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