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https://gitclone.com/github.com/MetaCubeX/Clash.Meta
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68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
package common
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import (
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"net"
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"sync"
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"time"
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"github.com/metacubex/quic-go"
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)
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type quicStreamConn struct {
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quic.Stream
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lock sync.Mutex
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lAddr net.Addr
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rAddr net.Addr
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closeDeferFn func()
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closeOnce sync.Once
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closeErr error
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}
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func (q *quicStreamConn) Write(p []byte) (n int, err error) {
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q.lock.Lock()
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defer q.lock.Unlock()
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return q.Stream.Write(p)
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}
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func (q *quicStreamConn) Close() error {
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q.closeOnce.Do(func() {
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q.closeErr = q.close()
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})
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return q.closeErr
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}
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func (q *quicStreamConn) close() error {
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if q.closeDeferFn != nil {
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defer q.closeDeferFn()
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}
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// https://github.com/cloudflare/cloudflared/commit/ed2bac026db46b239699ac5ce4fcf122d7cab2cd
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// Make sure a possible writer does not block the lock forever. We need it, so we can close the writer
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// side of the stream safely.
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_ = q.Stream.SetWriteDeadline(time.Now())
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// This lock is eventually acquired despite Write also acquiring it, because we set a deadline to writes.
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q.lock.Lock()
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defer q.lock.Unlock()
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// We have to clean up the receiving stream ourselves since the Close in the bottom does not handle that.
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q.Stream.CancelRead(0)
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return q.Stream.Close()
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}
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func (q *quicStreamConn) LocalAddr() net.Addr {
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return q.lAddr
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}
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func (q *quicStreamConn) RemoteAddr() net.Addr {
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return q.rAddr
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}
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var _ net.Conn = (*quicStreamConn)(nil)
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func NewQuicStreamConn(stream quic.Stream, lAddr, rAddr net.Addr, closeDeferFn func()) net.Conn {
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return &quicStreamConn{Stream: stream, lAddr: lAddr, rAddr: rAddr, closeDeferFn: closeDeferFn}
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}
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