Use SO_REUSEADDR and SO_REUSEPORT options when creating the sql server.

server/listener.go

@@ -15,8 +15,11 @@
 package server
 
 import (
+	"context"
 	"errors"
 	"fmt"
+	"golang.org/x/sys/unix"
+	"log"
 	"net"
 	"runtime"
 	"sync"
@@ -53,9 +56,36 @@ type Listener struct {
 // For unix socket connection, 'unixSocketPath' takes a path for the unix socket file.
 // If 'unixSocketPath' is empty, no need to create the second listener.
 func NewListener(protocol, address string, unixSocketPath string) (*Listener, error) {
-	netl, err := net.Listen(protocol, address)
-	if err != nil {
-		return nil, err
+	var netl net.Listener
+	if runtime.GOOS != "windows" {
+		lc := net.ListenConfig{
+			Control: func(network, address string, c syscall.RawConn) error {
+				return c.Control(func(fd uintptr) {
+					// Enable SO_REUSEADDR
+					err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)
+					if err != nil {
+						log.Printf("Could not set SO_REUSEADDR socket option: %s", err)
+					}
+
+					// Enable SO_REUSEPORT
+					err = unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
+					if err != nil {
+						log.Printf("Could not set SO_REUSEPORT socket option: %s", err)
+					}
+				})
+			},
+		}
+		var err error
+		netl, err = lc.Listen(context.Background(), protocol, address)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		var err error
+		netl, err = net.Listen(protocol, address)
+		if err != nil {
+			return nil, err
+		}
 	}
 
 	var unixl net.Listener