mirror of https://github.com/v2ray/v2ray-core
				
				
				
			
		
			
				
	
	
		
			33 lines
		
	
	
		
			511 B
		
	
	
	
		
			Go
		
	
	
			
		
		
	
	
			33 lines
		
	
	
		
			511 B
		
	
	
	
		
			Go
		
	
	
| package bittorrent
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| 
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| import (
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| 	"errors"
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| 
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| 	"v2ray.com/core/common"
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| )
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| 
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| type SniffHeader struct {
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| }
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| 
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| func (h *SniffHeader) Protocol() string {
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| 	return "bittorrent"
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| }
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| 
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| func (h *SniffHeader) Domain() string {
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| 	return ""
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| }
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| 
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| var errNotBittorrent = errors.New("not bittorrent header")
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| 
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| func SniffBittorrent(b []byte) (*SniffHeader, error) {
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| 	if len(b) < 20 {
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| 		return nil, common.ErrNoClue
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| 	}
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| 
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| 	if b[0] == 19 && string(b[1:20]) == "BitTorrent protocol" {
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| 		return &SniffHeader{}, nil
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| 	}
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| 
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| 	return nil, errNotBittorrent
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| }
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