Gnutella PHP,QRT example

Atomical · #1 October 8th, 2008

I'm testing a PHP Gnutella client and I need to generate a QRT table so I can receive data and test the functionality. I read over the spec and I still can't figure this out or get it right. If anyone could shed some light on what I'm doing wrong that would be amazing! I suspect I'm not packing/formatting the binary data right. Here's my code:

PHP Code:


			
        //write QRP reset message
        $variant = "\0x0";
        $table_length = pack('V',65536);
        $infinity = pack('C',1);
        $packet = $variant . $table_length . $infinity;
        $reset = create_header( "\30x0", 1,0, $packet );
        
        fwrite($fp, $reset,strlen($reset));
        
        
        //4 kilobyte
        $byte = '';
        for ( $o = 0; $o < 8/*(1024*4)*/; $o++){
            $byte .= 1;
            //$byte .= bindec(1111);
            //$byte .= pack('C',1); 
        
        }
        
        
        //write qrp table
        $packet = '';
        for ( $t =0; $t < 16; $t++ ){
    
            $variant = "\0x1";
            $seq_no = pack('C',$ttt = $t+1);
            echo "Patch $ttt of 16\n";
            $seq_size = pack('C',16); //bits
            $compressor = "\0x0";
            $entry_bits = pack('C',8);
            $packet = $variant . $seq_no . $seq_size . $compressor . $entry_bits . $byte;
            
            $packet = create_header("\30x0",1,0,$packet);
            
            

            fwrite($fp,$packet, strlen($packet));
            
        
        }

arne_bab · #2 October 13th, 2008

I can't help directly with that.

But I just approved your message to the gdf mailinglist - you should get an answer there.

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