mirror of https://github.com/poanetwork/quorum.git
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
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// Copyright 2015 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package raft
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import (
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"errors"
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"net"
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"time"
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)
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// stoppableListener sets TCP keep-alive timeouts on accepted
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// connections and waits on stopc message
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type stoppableListener struct {
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*net.TCPListener
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stopc <-chan struct{}
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}
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func newStoppableListener(addr string, stopc <-chan struct{}) (*stoppableListener, error) {
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ln, err := net.Listen("tcp", addr)
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if err != nil {
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return nil, err
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}
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return &stoppableListener{ln.(*net.TCPListener), stopc}, nil
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}
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func (ln stoppableListener) Accept() (c net.Conn, err error) {
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connc := make(chan *net.TCPConn, 1)
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errc := make(chan error, 1)
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go func() {
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tc, err := ln.AcceptTCP()
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if err != nil {
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errc <- err
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return
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}
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connc <- tc
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}()
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select {
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case <-ln.stopc:
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return nil, errors.New("server stopped")
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case err := <-errc:
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return nil, err
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case tc := <-connc:
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tc.SetKeepAlive(true)
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tc.SetKeepAlivePeriod(3 * time.Minute)
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return tc, nil
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}
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}
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