53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
/*
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Copyright 2015 CoreOS, Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package transport
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import (
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"net"
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"time"
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)
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// NewKeepAliveListener returns a listener that listens on the given address.
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// http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/overview.html
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func NewKeepAliveListener(addr string, scheme string, info TLSInfo) (net.Listener, error) {
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ln, err := NewListener(addr, scheme, info)
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if err != nil {
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return nil, err
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}
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return &keepaliveListener{
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Listener: ln,
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}, nil
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}
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type keepaliveListener struct {
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net.Listener
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}
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func (kln *keepaliveListener) Accept() (net.Conn, error) {
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c, err := kln.Listener.Accept()
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if err != nil {
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return nil, err
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}
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tcpc := c.(*net.TCPConn)
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// detection time: tcp_keepalive_time + tcp_keepalive_probes + tcp_keepalive_intvl
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// default on linux: 30 + 8 * 30
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// default on osx: 30 + 8 * 75
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tcpc.SetKeepAlive(true)
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tcpc.SetKeepAlivePeriod(30 * time.Second)
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return tcpc, nil
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}
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