Socket Server Not Sending Back Message

programming
1

I am trying to make a socket server that serves the sandbox security file back to flash. But I am having problems. I can’t get the socket server to send back a message when it receives the string “<policy-file-request/>”. Below I have code that should write back “Blah Blah blah” back to the server, but nothing is happening. It does disconnect when the code gets “<policy-file-request/>” but it doesn’t send any message.

Any idea what I’m doing wrong.

#!/usr/local/bin/php -q
<?php
error_reporting(E_ALL);

/* Allow the script to hang around waiting for connections. */
set_time_limit(0);

/* Turn on implicit output flushing so we see what we're getting
 * as it comes in. */
ob_implicit_flush();

$address = 'localhost';
$port = 7777;

if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
    echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "
";
}

if (socket_bind($sock, $address, $port) === false) {
    echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($sock)) . "
";
}

if (socket_listen($sock, 5) === false) {
    echo "socket_listen() failed: reason: " . socket_strerror(socket_last_error($sock)) . "
";
}

do {
    if (($msgsock = socket_accept($sock)) === false) {
        echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "
";
        break;
    }
    else
    {/* Send instructions. */
    $msg = "
Welcome to the PHP Test Server. 
" .
        "To quit, type 'quit'. To shut down the server type 'shutdown'.
";
    socket_write($msgsock, $msg, strlen($msg));
    }
    do {
        if (false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
            echo "socket_read() failed: reason: " . socket_strerror(socket_last_error($msgsock)) . "
";
            break 2;
        }
        if (!$buf = trim($buf)) {
            continue;
        }
        if ($buf == 'quit') {
            break;
        }
        if ($buf == 'shutdown') {
            socket_close($msgsock);
            break 2;
        }
        if ($buf == '<policy-file-request/>'){
         $talkback = "Blah Blah blah.
";
         echo $talkback;
        socket_write($msgsock, $talkback);
            break;
        }
        
       // $talkback = "PHP: You said '$buf'.
";
        //socket_write($msgsock, $talkback, strlen($talkback));
        echo "$buf
";
    } while (true);
    socket_close($msgsock);
} while (true);

socket_close($sock);
?>
2

Please ignore this request. My problem was that “
” is not the code to send a zero byte. It is in fact “\0”. I should stop reading random forums :0)