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chore: add loopback detect for direct outbound
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,68 @@ | ||
package outbound | ||
|
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import ( | ||
"net/netip" | ||
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"github.com/metacubex/mihomo/common/callback" | ||
C "github.com/metacubex/mihomo/constant" | ||
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"github.com/puzpuzpuz/xsync/v3" | ||
) | ||
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type loopBackDetector struct { | ||
connMap *xsync.MapOf[netip.AddrPort, struct{}] | ||
packetConnMap *xsync.MapOf[netip.AddrPort, struct{}] | ||
} | ||
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func newLoopBackDetector() *loopBackDetector { | ||
return &loopBackDetector{ | ||
connMap: xsync.NewMapOf[netip.AddrPort, struct{}](), | ||
packetConnMap: xsync.NewMapOf[netip.AddrPort, struct{}](), | ||
} | ||
} | ||
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func (l *loopBackDetector) NewConn(conn C.Conn) C.Conn { | ||
metadata := C.Metadata{} | ||
if metadata.SetRemoteAddr(conn.LocalAddr()) != nil { | ||
return conn | ||
} | ||
connAddr := metadata.AddrPort() | ||
if !connAddr.IsValid() { | ||
return conn | ||
} | ||
l.connMap.Store(connAddr, struct{}{}) | ||
return callback.NewCloseCallbackConn(conn, func() { | ||
l.packetConnMap.Delete(connAddr) | ||
}) | ||
} | ||
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func (l *loopBackDetector) NewPacketConn(conn C.PacketConn) C.PacketConn { | ||
metadata := C.Metadata{} | ||
if metadata.SetRemoteAddr(conn.LocalAddr()) != nil { | ||
return conn | ||
} | ||
connAddr := metadata.AddrPort() | ||
if !connAddr.IsValid() { | ||
return conn | ||
} | ||
l.packetConnMap.Store(connAddr, struct{}{}) | ||
return callback.NewCloseCallbackPacketConn(conn, func() { | ||
l.packetConnMap.Delete(connAddr) | ||
}) | ||
} | ||
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func (l *loopBackDetector) CheckConn(connAddr netip.AddrPort) bool { | ||
if !connAddr.IsValid() { | ||
return false | ||
} | ||
_, ok := l.connMap.Load(connAddr) | ||
return ok | ||
} | ||
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func (l *loopBackDetector) CheckPacketConn(connAddr netip.AddrPort) bool { | ||
if !connAddr.IsValid() { | ||
return false | ||
} | ||
_, ok := l.packetConnMap.Load(connAddr) | ||
return ok | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,61 @@ | ||
package callback | ||
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import ( | ||
"sync" | ||
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C "github.com/metacubex/mihomo/constant" | ||
) | ||
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type closeCallbackConn struct { | ||
C.Conn | ||
closeFunc func() | ||
closeOnce sync.Once | ||
} | ||
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func (w *closeCallbackConn) Close() error { | ||
w.closeOnce.Do(w.closeFunc) | ||
return w.Conn.Close() | ||
} | ||
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func (w *closeCallbackConn) ReaderReplaceable() bool { | ||
return true | ||
} | ||
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func (w *closeCallbackConn) WriterReplaceable() bool { | ||
return true | ||
} | ||
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func (w *closeCallbackConn) Upstream() any { | ||
return w.Conn | ||
} | ||
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func NewCloseCallbackConn(conn C.Conn, callback func()) C.Conn { | ||
return &closeCallbackConn{Conn: conn, closeFunc: callback} | ||
} | ||
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type closeCallbackPacketConn struct { | ||
C.PacketConn | ||
closeFunc func() | ||
closeOnce sync.Once | ||
} | ||
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func (w *closeCallbackPacketConn) Close() error { | ||
w.closeOnce.Do(w.closeFunc) | ||
return w.PacketConn.Close() | ||
} | ||
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func (w *closeCallbackPacketConn) ReaderReplaceable() bool { | ||
return true | ||
} | ||
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func (w *closeCallbackPacketConn) WriterReplaceable() bool { | ||
return true | ||
} | ||
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func (w *closeCallbackPacketConn) Upstream() any { | ||
return w.PacketConn | ||
} | ||
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func NewCloseCallbackPacketConn(conn C.PacketConn, callback func()) C.PacketConn { | ||
return &closeCallbackPacketConn{PacketConn: conn, closeFunc: callback} | ||
} |
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