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19 lines
434 B
19 lines
434 B
package udp |
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import ( |
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"v2ray.com/core/common" |
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"v2ray.com/core/common/net" |
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) |
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// PickPort returns an unused UDP port in the system. The port returned is highly likely to be unused, but not guaranteed. |
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func PickPort() net.Port { |
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conn, err := net.ListenUDP("udp4", &net.UDPAddr{ |
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IP: net.LocalHostIP.IP(), |
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Port: 0, |
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}) |
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common.Must(err) |
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defer conn.Close() |
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addr := conn.LocalAddr().(*net.UDPAddr) |
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return net.Port(addr.Port) |
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}
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