package commander
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import (
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"context"
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"sync"
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"github.com/v2fly/v2ray-core/v5/common"
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"github.com/v2fly/v2ray-core/v5/common/net"
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"github.com/v2fly/v2ray-core/v5/common/signal/done"
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"github.com/v2fly/v2ray-core/v5/transport"
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)
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// OutboundListener is a net.Listener for listening gRPC connections.
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type OutboundListener struct {
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buffer chan net.Conn
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done *done.Instance
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}
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func (l *OutboundListener) add(conn net.Conn) {
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select {
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case l.buffer <- conn:
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case <-l.done.Wait():
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conn.Close()
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default:
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conn.Close()
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}
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}
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// Accept implements net.Listener.
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func (l *OutboundListener) Accept() (net.Conn, error) {
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select {
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case <-l.done.Wait():
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return nil, newError("listen closed")
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case c := <-l.buffer:
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return c, nil
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}
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}
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// Close implement net.Listener.
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func (l *OutboundListener) Close() error {
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common.Must(l.done.Close())
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L:
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for {
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select {
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case c := <-l.buffer:
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c.Close()
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default:
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break L
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}
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}
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return nil
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}
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// Addr implements net.Listener.
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func (l *OutboundListener) Addr() net.Addr {
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return &net.TCPAddr{
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IP: net.IP{0, 0, 0, 0},
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Port: 0,
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}
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}
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// Outbound is a outbound.Handler that handles gRPC connections.
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type Outbound struct {
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tag string
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listener *OutboundListener
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access sync.RWMutex
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closed bool
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}
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// Dispatch implements outbound.Handler.
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func (co *Outbound) Dispatch(ctx context.Context, link *transport.Link) {
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co.access.RLock()
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if co.closed {
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common.Interrupt(link.Reader)
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common.Interrupt(link.Writer)
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co.access.RUnlock()
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return
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}
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closeSignal := done.New()
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c := net.NewConnection(net.ConnectionInputMulti(link.Writer), net.ConnectionOutputMulti(link.Reader), net.ConnectionOnClose(closeSignal))
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co.listener.add(c)
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co.access.RUnlock()
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<-closeSignal.Wait()
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}
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// Tag implements outbound.Handler.
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func (co *Outbound) Tag() string {
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return co.tag
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}
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// Start implements common.Runnable.
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func (co *Outbound) Start() error {
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co.access.Lock()
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co.closed = false
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co.access.Unlock()
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return nil
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}
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// Close implements common.Closable.
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func (co *Outbound) Close() error {
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co.access.Lock()
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defer co.access.Unlock()
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co.closed = true
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return co.listener.Close()
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}
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