2016-08-15 06:16:54 -04:00
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package ws
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import (
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"errors"
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"net"
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)
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type StoppableListener struct {
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2016-08-15 09:19:15 -04:00
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net.Listener //Wrapped listener
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stop chan int //Channel used only to indicate listener should shutdown
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2016-08-15 06:16:54 -04:00
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}
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func NewStoppableListener(l net.Listener) (*StoppableListener, error) {
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2016-08-15 09:19:15 -04:00
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/*
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tcpL, ok := l.(*net.TCPListener)
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2016-08-15 06:16:54 -04:00
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2016-08-15 09:19:15 -04:00
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if !ok {
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return nil, errors.New("Cannot wrap listener")
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}
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*/
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2016-08-15 06:16:54 -04:00
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retval := &StoppableListener{}
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2016-08-15 09:19:15 -04:00
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retval.Listener = l
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2016-08-15 06:16:54 -04:00
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retval.stop = make(chan int)
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return retval, nil
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}
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var StoppedError = errors.New("Listener stopped")
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func (sl *StoppableListener) Accept() (net.Conn, error) {
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for {
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2016-08-15 09:19:15 -04:00
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newConn, err := sl.Listener.Accept()
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2016-08-15 06:16:54 -04:00
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//Check for the channel being closed
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select {
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case <-sl.stop:
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return nil, StoppedError
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default:
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//If the channel is still open, continue as normal
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}
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if err != nil {
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netErr, ok := err.(net.Error)
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//If this is a timeout, then continue to wait for
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//new connections
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if ok && netErr.Timeout() && netErr.Temporary() {
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continue
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}
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}
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return newConn, err
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}
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}
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func (sl *StoppableListener) Stop() {
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close(sl.stop)
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}
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