[RESOLVED] Simple socket doesn't work :(

whisher06

Hi.
I'm taking my first steps with the socket functions
so I don't understand why this simple snippet doesn't
work:

$port=1234;
$host='127.0.0.1';
//set_time_limit(0);
// create low level socket
if(!$socket=socket_create(AF_INET,SOCK_STREAM,0)){
    trigger_error('Error creating new socket',E_USER_ERROR);
}
// tie up socket to TCP port
if(!socket_bind($socket,$host,$port)){
    trigger_error('Error binding socket to TCP port',E_USER_ERROR);
}
// begin listening connections
if(!socket_listen($socket)){
    trigger_error('Error listening socket connections',E_USER_ERROR);
}
// create communication socket
if(!$comSocket=socket_accept($socket)){
    trigger_error('Error creating communication socket',E_USER_ERROR);
}
// read socket input
$socketInput=socket_read($comSocket,1024);
// convert to uppercase socket input 
$socketOutput=strtoupper(trim($socketInput))."n";
// write data back to socket server
if(!socket_write($comSocket,$socketOutput,strlen($socketOutput))){
    trigger_error('Error writing socket output',E_USER_ERROR);
}
// close sockets
socket_close($comSocket);
socket_close($socket);

Warning: socket_bind() [function.socket-bind]: unable to bind address [0]

Fatal error: Error binding socket to TCP port in F:...\index1.php on line 11

Can anyone help me, please ?

I'm also looking for good tutorials 😉

Bye.

whisher06

I was wrong about the root
if I put the snippet in the root
and ie put this also in the root:

<?php
// check if form was submitted
if(isset($_POST['send'])){
    // open client connection to TCP server
    if(!$fp=fsockopen('127.0.0.1',1234,$errstr,$errno,5)){
        trigger_error('Error opening socket',E_USER_ERROR);
    }
    $message=$_POST['message'];
    // write message to socket server
    fputs($fp,$message);
    // get server response
    $ret=fgets($fp,1024);
    // close socket connection
    fclose($fp);
    echo '<h1>You entered the following message in lowercase :'.$ret.'</h1>';
    exit();
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>TESTING TCP SOCKET SERVER</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-
8859-1" />
</head>
<body>
<h1>Enter your message here</h1>
<form action="<?php echo $_SERVER['PHP_SELF']?>" method="post">
<input type="text" name="message" size="30" /><br />
<input type="submit" name="send" value="Send Value" />
</form>
</body>
</html>

It works I'm mastering :o 😃

You have to start the server 😉

Bye.

prakash1708

sir,

have you improvised the program to retrieve information from another machine (instead of your local pc) - say e-mail info from yahoo. if so can you post the sample code for my benefit