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lib/netutil: add -enableTCP6 command-line flag for enabling listening for IPv6 additionally to IPv4 TCP ports

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This commit is contained in:
Aliaksandr Valialkin 2019-11-29 17:32:40 +02:00
parent a7125a5b7b
commit 9010c6a1d6
1 changed files with 9 additions and 1 deletions
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10
lib/netutil/tcplistener.go
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@ -1,6 +1,7 @@
package netutil
import (
"flag"
"fmt"
"net"
"time"
@ -8,12 +9,19 @@ import (
"github.com/VictoriaMetrics/metrics"
)
var enableTCP6 = flag.Bool("enableTCP6", false, "Whether to enable listening for IPv6 TCP ports. By default only IPv4 TCP ports are listened")
// NewTCPListener returns new TCP listener for the given addr.
//
// name is used for exported metrics. Each listener in the program must have
// distinct name.
func NewTCPListener(name, addr string) (*TCPListener, error) {
ln, err := net.Listen("tcp4", addr)
network := "tcp4"
if *enableTCP6 {
// Enable listening on both tcp4 and tcp6
network = "tcp"
}
ln, err := net.Listen(network, addr)
if err != nil {
return nil, err
}