83 lines
1.6 KiB
Go
83 lines
1.6 KiB
Go
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import "sync"
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type streamListener struct {
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net, addr string
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ln Listener
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}
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type dualStackServer struct {
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lnmu sync.RWMutex
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lns []streamListener
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port string
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cmu sync.RWMutex
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cs []Conn // established connections at the passive open side
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}
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func (dss *dualStackServer) buildup(server func(*dualStackServer, Listener)) error {
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for i := range dss.lns {
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go server(dss, dss.lns[i].ln)
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}
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return nil
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}
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func (dss *dualStackServer) putConn(c Conn) error {
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dss.cmu.Lock()
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dss.cs = append(dss.cs, c)
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dss.cmu.Unlock()
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return nil
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}
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func (dss *dualStackServer) teardownNetwork(net string) error {
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dss.lnmu.Lock()
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for i := range dss.lns {
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if net == dss.lns[i].net && dss.lns[i].ln != nil {
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dss.lns[i].ln.Close()
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dss.lns[i].ln = nil
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}
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}
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dss.lnmu.Unlock()
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return nil
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}
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func (dss *dualStackServer) teardown() error {
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dss.lnmu.Lock()
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for i := range dss.lns {
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if dss.lns[i].ln != nil {
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dss.lns[i].ln.Close()
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}
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}
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dss.lnmu.Unlock()
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dss.cmu.Lock()
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for _, c := range dss.cs {
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c.Close()
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}
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dss.cmu.Unlock()
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return nil
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}
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func newDualStackServer(lns []streamListener) (*dualStackServer, error) {
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dss := &dualStackServer{lns: lns, port: "0"}
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for i := range dss.lns {
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ln, err := Listen(dss.lns[i].net, dss.lns[i].addr+":"+dss.port)
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if err != nil {
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dss.teardown()
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return nil, err
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}
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dss.lns[i].ln = ln
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if dss.port == "0" {
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if _, dss.port, err = SplitHostPort(ln.Addr().String()); err != nil {
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dss.teardown()
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return nil, err
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}
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}
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}
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return dss, nil
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}
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