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17 lines
394 B
17 lines
394 B
7 years ago
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package tcp
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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 TCP 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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listener, err := net.Listen("tcp4", "127.0.0.1:0")
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common.Must(err)
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defer listener.Close()
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addr := listener.Addr().(*net.TCPAddr)
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return net.Port(addr.Port)
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}
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