golang hook_plan9 代码
文件路径：/src/net/hook_plan9.go
/ 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.
package net
import "time"
var testHookDialChannel = func() { time.Sleep(time.Millisecond) } / see golang.org/issue/5349