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36 lines
993 B
Go
36 lines
993 B
Go
package tcp
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import (
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"os"
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"strings"
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"github.com/libp2p/go-reuseport"
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)
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// envReuseport is the env variable name used to turn off reuse port.
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// It default to true.
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const envReuseport = "LIBP2P_TCP_REUSEPORT"
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// envReuseportVal stores the value of envReuseport. defaults to true.
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var envReuseportVal = true
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func init() {
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v := strings.ToLower(os.Getenv(envReuseport))
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if v == "false" || v == "f" || v == "0" {
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envReuseportVal = false
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log.Infof("REUSEPORT disabled (LIBP2P_TCP_REUSEPORT=%s)", v)
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}
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}
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// ReuseportIsAvailable returns whether reuseport is available to be used. This
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// is here because we want to be able to turn reuseport on and off selectively.
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// For now we use an ENV variable, as this handles our pressing need:
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//
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// LIBP2P_TCP_REUSEPORT=false ipfs daemon
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//
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// If this becomes a sought after feature, we could add this to the config.
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// In the end, reuseport is a stop-gap.
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func ReuseportIsAvailable() bool {
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return envReuseportVal && reuseport.Available()
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}
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