Add support for the IPv6

Signed-off-by: Valery Piashchynski <[email protected]>

4 files changed, 30 insertions, 7 deletions

diff --git a/utils/isolate.go b/utils/isolate.go
index 202f538c..65865ddb 100755
--- a/utils/isolate.go
+++ b/utils/isolate.go
@@ -1,5 +1,4 @@
 //go:build !windows
-// +build !windows
 
 package utils
 
diff --git a/utils/isolate_win.go b/utils/isolate_win.go
index 6b6d22e0..00f84bf4 100755
--- a/utils/isolate_win.go
+++ b/utils/isolate_win.go
@@ -1,5 +1,4 @@
 //go:build windows
-// +build windows
 
 package utils
 
diff --git a/utils/network.go b/utils/network.go
index 301e2bab..4ff41350 100755
--- a/utils/network.go
+++ b/utils/network.go
@@ -1,5 +1,4 @@
 //go:build linux || darwin || freebsd
-// +build linux darwin freebsd
 
 package utils
 
@@ -13,6 +12,11 @@ import (
 	"github.com/valyala/tcplisten"
 )
 
+const (
+	IPV4 string = "tcp4"
+	IPV6 string = "tcp6"
+)
+
 // CreateListener
 // - SO_REUSEPORT. This option allows linear scaling server performance
 //     on multi-CPU servers.
@@ -61,13 +65,35 @@ func createTCPListener(addr string) (net.Listener, error) {
 		ReusePort:   true,
 		DeferAccept: true,
 		FastOpen:    true,
-		Backlog:     0,
 	}
-	listener, err := cfg.NewListener("tcp4", addr)
+
+	/*
+		Options we may have here:
+		1. [::1]:8080 //ipv6
+		2. [0:0:..]:8080 //ipv6
+		3. 127.0.0.1:8080 //ipv4
+		4. :8080 //ipv4
+		5. [::]:8080 //ipv6
+	*/
+	host, _, err := net.SplitHostPort(addr)
 	if err != nil {
 		return nil, err
 	}
-	return listener, nil
+
+	// consider this is IPv4
+	if host == "" {
+		return cfg.NewListener(IPV4, addr)
+	}
+
+	return cfg.NewListener(netw(net.ParseIP(host)), addr)
+}
+
+// check if we are listening on the ipv6 or ipv4 address
+func netw(addr net.IP) string {
+	if addr.To4() == nil {
+		return IPV6
+	}
+	return IPV4
 }
 
 // fileExists checks if a file exists and is not a directory before we
diff --git a/utils/network_windows.go b/utils/network_windows.go
index 88e0fdb6..2962b3b4 100755
--- a/utils/network_windows.go
+++ b/utils/network_windows.go
@@ -1,5 +1,4 @@
 //go:build windows
-// +build windows
 
 package utils