go issue19555 源码
golang issue19555 代码
文件路径：/test/fixedbugs/issue19555.go
// compile
// Copyright 2017 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 p
type NodeLink struct{}
// A role our end of NodeLink is intended to play
type LinkRole int64
const (
LinkServer LinkRole = iota // link created as server
LinkClient // link created as client
// for testing:
linkNoRecvSend LinkRole = 1 << 16 // do not spawn serveRecv & serveSend
linkFlagsMask LinkRole = (1<<32 - 1) << 16
)
func NewNodeLink(role LinkRole) *NodeLink {
var nextConnId uint32
switch role &^ linkFlagsMask {
case LinkServer:
nextConnId = 0 // all initiated by us connId will be even
case LinkClient:
nextConnId = 1 // ----//---- odd
default:
panic("invalid conn role")
}
_ = nextConnId
return nil
}
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