08-15-2013
Is the number of bytes between the start (0x32) and end (0xff 0x33) constant?
Also, whats the significance of the blocks? Can the requested data is present outside the block, in which case you are not interested?
Are there multiple instances of the required data within a block?
I can provide a solution in C. I am not good at python.
--ahamed
Last edited by ahamed101; 08-15-2013 at 04:39 AM..
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LEARN ABOUT PHP
socket_sendto
SOCKET_SENDTO(3) 1 SOCKET_SENDTO(3)
socket_sendto - Sends a message to a socket, whether it is connected or not
SYNOPSIS
int socket_sendto (resource $socket, string $buf, int $len, int $flags, string $addr, [int $port])
DESCRIPTION
The function socket_sendto(3) sends $len bytes from $buf through the socket $socket to the $port at the address $addr.
PARAMETERS
o $socket
- A valid socket resource created using socket_create(3).
o $buf
- The sent data will be taken from buffer $buf.
o $len
-$len bytes from $buf will be sent.
o $flags
- The value of $flags can be any combination of the following flags, joined with the binary OR ( |) operator.
Possible values for $flags
+--------------+---------------------------------------------------+
| | |
| MSG_OOB | |
| | |
| | Send OOB (out-of-band) data. |
| | |
| | |
| MSG_EOR | |
| | |
| | Indicate a record mark. The sent data completes |
| | the record. |
| | |
| | |
| MSG_EOF | |
| | |
| | Close the sender side of the socket and include |
| | an appropriate notification of this at the end of |
| | the sent data. The sent data completes the trans- |
| | action. |
| | |
| | |
|MSG_DONTROUTE | |
| | |
| | Bypass routing, use direct interface. |
| | |
+--------------+---------------------------------------------------+
o $addr
- IP address of the remote host.
o $port
-$port is the remote port number at which the data will be sent.
RETURN VALUES
socket_sendto(3) returns the number of bytes sent to the remote host, or FALSE if an error occurred.
EXAMPLES
Example #1
socket_sendto(3) Example
<?php
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
$msg = "Ping !";
$len = strlen($msg);
socket_sendto($sock, $msg, $len, 0, '127.0.0.1', 1223);
socket_close($sock);
?>
SEE ALSO
socket_send(3).
PHP Documentation Group SOCKET_SENDTO(3)