21 lines
334 B
Go
21 lines
334 B
Go
package freeport
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import (
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"net"
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)
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// Ask the kernel for a free open port that is ready to use
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func GetPort() int {
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addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
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if err != nil {
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panic(err)
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}
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l, err := net.ListenTCP("tcp", addr)
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if err != nil {
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panic(err)
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}
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defer l.Close()
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return l.Addr().(*net.TCPAddr).Port
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}
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