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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 93dbec971b
commit 4810f1dde6
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 package netutil
import ( import (
"flag"
"fmt" "fmt"
"net" "net"
"time" "time"
@ -8,12 +9,19 @@ import (
"github.com/VictoriaMetrics/metrics" "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. // NewTCPListener returns new TCP listener for the given addr.
// //
// name is used for exported metrics. Each listener in the program must have // name is used for exported metrics. Each listener in the program must have
// distinct name. // distinct name.
func NewTCPListener(name, addr string) (*TCPListener, error) { 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 { if err != nil {
return nil, err return nil, err
} }