25 lines
503 B
Go
25 lines
503 B
Go
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package addr
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import (
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"net"
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)
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// Suggest suggests a address a process can listen on. It returns
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// a tuple consisting of a free port and the hostname resolved to its IP.
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func Suggest() (port int, resolvedHost string, err error) {
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addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
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if err != nil {
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return
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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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return
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}
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port = l.Addr().(*net.TCPAddr).Port
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defer func() {
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err = l.Close()
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}()
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resolvedHost = addr.IP.String()
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return
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}
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