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XTLS Vision rejects Mux except for XUDP (#1567)
* Xtls vision reject vless-tcp-tls+Mux * Address review comment
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@ -154,6 +154,19 @@ func New(ctx context.Context, config *Config, dc dns.Client) (*Handler, error) {
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return handler, nil
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}
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func isMuxAndNotXUDP(request *protocol.RequestHeader, first *buf.Buffer) bool {
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if request.Command != protocol.RequestCommandMux {
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return false
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}
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if first.Len() < 7 {
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return true
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}
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firstBytes := first.Bytes()
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return !(firstBytes[2] == 0 && // ID high
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firstBytes[3] == 0 && // ID low
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firstBytes[6] == 2) // Network type: UDP
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}
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// Close implements common.Closable.Close().
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func (h *Handler) Close() error {
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return errors.Combine(common.Close(h.validator))
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@ -513,7 +526,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
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return newError(account.ID.String() + " is not able to use " + requestAddons.Flow).AtWarning()
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}
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case "", "none":
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if accountFlow == vless.XRV && !allowNoneFlow && request.Command == protocol.RequestCommandTCP {
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if accountFlow == vless.XRV && !allowNoneFlow && (request.Command == protocol.RequestCommandTCP || isMuxAndNotXUDP(request, first)) {
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return newError(account.ID.String() + " is not able to use " + vless.XRV +
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". Note the pure tls proxy has certain tls in tls characters. Append \",none\" in flow to suppress").AtWarning()
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}
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