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21 lines
412 B
Go
21 lines
412 B
Go
package tcp
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import "github.com/v2fly/v2ray-core/v4/common/net"
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// PickPort returns an unused TCP port of the system.
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func PickPort() net.Port {
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listener := pickPort()
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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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func pickPort() net.Listener {
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listener, err := net.Listen("tcp4", "127.0.0.1:0")
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if err != nil {
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listener = pickPort()
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}
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return listener
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}
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