一段读取BT 的UDP tracker的代码,读取不到信息,大家帮忙看看啊

siop

1. 
   
2. $infoHash = '5b10a2b5b5a2239e68d3ff4f86da31832c26009b';
   
3. $connectionID = 0x41727101980;
   
4. $transactionID = md5( 'fghfgh' );
   
5. $action = 2;
   
6. 
   
7. $host = '61.129.77.239';
   
8. $port = 8080;
   
9. 
   
10. $s = pack( "NNa32a40", $connectionID, $action, $transactionID, $infoHash );
    
11. 
    
12. $sock = socket_create( AF_INET, SOCK_DGRAM, 0 );
    
13. 
    
14. socket_connect( $sock, $host , $port);
    
15. 
    
16. socket_write( $sock, $s , strlen( $s ) );
    
17. 
    
18. $result  = socket_read( $sock, 100 );
    

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连接读取UDP tracker的种子信息,去掉$result  = socket_read( $sock, 100 );就可以,估计发送是成功的了,等待返回那儿,好半天都不行,那个熟悉的哥们帮我看看啊