26 lines
628 B
Go
26 lines
628 B
Go
package common
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import (
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"fmt"
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"log"
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"net"
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)
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// FindPort finds and starts listening on a port in the range [portMin, portMax]
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// returns the listener and the port number on success, or nil, 0 on failure
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func FindPort(portMin uint, portMax uint) (net.Listener, uint) {
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log.Printf("Looking for an available port between %d and %d", portMin, portMax)
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for port := portMin; port <= portMax; port++ {
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log.Printf("Trying port: %d", port)
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l, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
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if err == nil {
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return l, port
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} else {
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log.Printf("Port %d unavailable: %s", port, err.Error())
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}
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}
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return nil, 0
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}
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