1 files changed, 0 insertions, 79 deletions
diff --git a/utils/network.go b/utils/network.go
deleted file mode 100755
index e57854a8..00000000
--- a/utils/network.go
+++ /dev/null
@@ -1,79 +0,0 @@
-// +build linux darwin freebsd
-
-package utils
-
-import (
-	"fmt"
-	"net"
-	"os"
-	"strings"
-	"syscall"
-
-	"github.com/valyala/tcplisten"
-)
-
-//   - SO_REUSEPORT. This option allows linear scaling server performance
-//     on multi-CPU servers.
-//     See https://www.nginx.com/blog/socket-sharding-nginx-release-1-9-1/ for details.
-//
-//   - TCP_DEFER_ACCEPT. This option expects the server reads from the accepted
-//     connection before writing to them.
-//
-//   - TCP_FASTOPEN. See https://lwn.net/Articles/508865/ for details.
-// CreateListener crates socket listener based on DSN definition.
-func CreateListener(address string) (net.Listener, error) {
-	dsn := strings.Split(address, "://")
-
-	switch len(dsn) {
-	case 1:
-		// assume, that there is no prefix here [127.0.0.1:8000]
-		return createTCPListener(dsn[0])
-	case 2:
-		// we got two part here, first part is the transport, second - address
-		// [tcp://127.0.0.1:8000] OR [unix:///path/to/unix.socket] OR [error://path]
-		// where error is wrong transport name
-		switch dsn[0] {
-		case "unix":
-			// check of file exist. If exist, unlink
-			if fileExists(dsn[1]) {
-				err := syscall.Unlink(dsn[1])
-				if err != nil {
-					return nil, fmt.Errorf("error during the unlink syscall: error %v", err)
-				}
-			}
-			return net.Listen(dsn[0], dsn[1])
-		case "tcp":
-			return createTCPListener(dsn[1])
-			// not an tcp or unix
-		default:
-			return nil, fmt.Errorf("invalid Protocol ([tcp://]:6001, unix://file.sock), address: %s", address)
-		}
-		// wrong number of split parts
-	default:
-		return nil, fmt.Errorf("wrong number of parsed protocol parts, address: %s", address)
-	}
-}
-
-func createTCPListener(addr string) (net.Listener, error) {
-	cfg := tcplisten.Config{
-		ReusePort:   true,
-		DeferAccept: true,
-		FastOpen:    true,
-		Backlog:     0,
-	}
-	listener, err := cfg.NewListener("tcp4", addr)
-	if err != nil {
-		return nil, err
-	}
-	return listener, nil
-}
-
-// fileExists checks if a file exists and is not a directory before we
-// try using it to prevent further errors.
-func fileExists(filename string) bool {
-	info, err := os.Stat(filename)
-	if os.IsNotExist(err) {
-		return false
-	}
-	return !info.IsDir()
-}