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33 lines
680 B
33 lines
680 B
package graceful
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import (
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"net"
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"time"
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)
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type keepAliveConn interface {
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SetKeepAlive(bool) error
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SetKeepAlivePeriod(d time.Duration) error
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}
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// keepAliveListener sets TCP keep-alive timeouts on accepted
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// connections. It's used by ListenAndServe and ListenAndServeTLS so
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// dead TCP connections (e.g. closing laptop mid-download) eventually
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// go away.
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type keepAliveListener struct {
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net.Listener
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keepAlivePeriod time.Duration
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}
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func (ln keepAliveListener) Accept() (net.Conn, error) {
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c, err := ln.Listener.Accept()
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if err != nil {
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return nil, err
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}
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kac := c.(keepAliveConn)
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kac.SetKeepAlive(true)
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kac.SetKeepAlivePeriod(ln.keepAlivePeriod)
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return c, nil
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}
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