| // Copyright 2015 The Go Authors. All rights reserved. | 
 | // Use of this source code is governed by a BSD-style | 
 | // license that can be found in the LICENSE file. | 
 |  | 
 | // +build aix darwin dragonfly freebsd linux nacl netbsd openbsd solaris | 
 |  | 
 | package net | 
 |  | 
 | import "syscall" | 
 |  | 
 | var ( | 
 | 	testHookDialChannel  = func() {} // for golang.org/issue/5349 | 
 | 	testHookCanceledDial = func() {} // for golang.org/issue/16523 | 
 |  | 
 | 	// Placeholders for socket system calls. | 
 | 	socketFunc        func(int, int, int) (int, error)         = syscall.Socket | 
 | 	closeFunc         func(int) error                          = syscall.Close | 
 | 	connectFunc       func(int, syscall.Sockaddr) error        = syscall.Connect | 
 | 	listenFunc        func(int, int) error                     = syscall.Listen | 
 | 	acceptFunc        func(int) (int, syscall.Sockaddr, error) = syscall.Accept | 
 | 	getsockoptIntFunc func(int, int, int) (int, error)         = syscall.GetsockoptInt | 
 | ) |