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use listen to ensure the port is free (#6990)

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boxjan 2021-07-05 06:24:18 +08:00 committed by GitHub
parent a21d28d01b
commit 0c685c1e94
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1 changed files with 4 additions and 4 deletions
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8
internal/net/net.go
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@ -29,12 +29,12 @@ func IsIPV6(ip _net.IP) bool {
// IsPortAvailable checks if a TCP port is available or not // IsPortAvailable checks if a TCP port is available or not
func IsPortAvailable(p int) bool { func IsPortAvailable(p int) bool {
conn, err := _net.Dial("tcp", fmt.Sprintf(":%v", p)) ln, err := _net.Listen("tcp", fmt.Sprintf(":%v", p))
if err != nil { if err != nil {
return true return false
} }
defer conn.Close() defer ln.Close()
return false return true
} }
// IsIPv6Enabled checks if IPV6 is enabled or not and we have // IsIPv6Enabled checks if IPV6 is enabled or not and we have