Xray-core/proxy/blackhole/blackhole.go

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// Package blackhole is an outbound handler that blocks all connections.
package blackhole
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//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
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import (
"context"
"time"
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"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/session"
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"github.com/xtls/xray-core/transport"
"github.com/xtls/xray-core/transport/internet"
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)
// Handler is an outbound connection that silently swallow the entire payload.
type Handler struct {
response ResponseConfig
}
// New creates a new blackhole handler.
func New(ctx context.Context, config *Config) (*Handler, error) {
response, err := config.GetInternalResponse()
if err != nil {
return nil, err
}
return &Handler{
response: response,
}, nil
}
// Process implements OutboundHandler.Dispatch().
func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
outbounds := session.OutboundsFromContext(ctx)
ob := outbounds[len(outbounds) - 1]
ob.Name = "blackhole"
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nBytes := h.response.WriteTo(link.Writer)
if nBytes > 0 {
// Sleep a little here to make sure the response is sent to client.
time.Sleep(time.Second)
}
common.Interrupt(link.Writer)
return nil
}
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return New(ctx, config.(*Config))
}))
}