move utils

proxy/utils.go

@@ -1,31 +0,0 @@
-package proxy
-
-import (
-	"net"
-	"time"
-)
-
-type duplexConn interface {
-	net.Conn
-	CloseRead() error
-	CloseWrite() error
-}
-
-func TCPCloseRead(conn net.Conn) {
-	if c, ok := conn.(duplexConn); ok {
-		c.CloseRead()
-	}
-}
-
-func TCPCloseWrite(conn net.Conn) {
-	if c, ok := conn.(duplexConn); ok {
-		c.CloseWrite()
-	}
-}
-
-func TCPKeepAlive(conn net.Conn) {
-	if tcp, ok := conn.(*net.TCPConn); ok {
-		tcp.SetKeepAlive(true)
-		tcp.SetKeepAlivePeriod(30 * time.Second)
-	}
-}