Here is client server very simple code, seems to work with telnet but with with web client code gives blank output.
Following is the server code:-
[php]
<?
function createSocketSer ver($host='192. 168.1.34',$port =2222)
{
$max_clients = 10;
$client=array() ;
if(!is_int($por t)||$port<1||$p ort>65535)
{
trigger_error(' Invalid TCP port number.',E_USER _ERROR);
}
set_time_limit( 0);
// create low level socket
if(!$socket=soc ket_create(AF_I NET,SOCK_STREAM ,0))
{
trigger_error(' Error creating new socket.',E_USER _ERROR);
}
// bind socket to TCP port
if(!socket_bind ($socket,$host, $port))
{
trigger_error(' Error binding socket to TCP port.',E_USER_E RROR);
}
// begin listening connections
if(!socket_list en($socket))
{
trigger_error(' Error listening socket connections.',E _USER_ERROR);
}
while(true)
{
$read[0] = $socket;
for ($i = 0; $i < $max_clients; $i++)
{
if ($client[$i]['socket'] != null)
{
$read[$i + 1] = $client[$i]['socket'] ;
}
}
// Set up a blocking call to socket_select()
$ready = socket_select($ read,$a=null,$b =null,$c=null);
if (in_array($sock et, $read))
{
for ($i = 0; $i < $max_clients; $i++)
{
if ($client[$i]['socket'] == null)
{
$client[$i]['socket'] = socket_accept($ socket);
break;
}
else if($i == $max_clients - 1)
print ("too many clients");
}
if (--$ready <= 0)
continue;
} // end if in_array//NA Ends
// If a client is trying to write - handle it now
for ($i = 0; $i < $max_clients; $i++) // for each client
{
if (in_array($clie nt[$i]['socket'] , $read))
{
$input = socket_read($cl ient[$i]['socket'] , 1024,1);
if ($input == null)
{
// Zero length string meaning disconnected
unset($client[$i]);
}
$n = trim($input);
//if ($input == 'exit')
if ($n == 'exit')
{
// requested disconnect
socket_close($c lient[$i]['socket']);
}
else if($input)
{
// strip white spaces and write back to user
$output = ereg_replace("[ \t\n\r]","",$input).ch r(0);
socket_write($c lient[$i]['socket'],$output);
}
}
else
{
// Close the socket
if ($client[$i]['socket'] != null)
{
socket_close($c lient[$i]['socket']);
unset($client[$i]);
}
}
}
}
socket_close($s ocket);
}
?>
[/php]
Here comes the client code
[PHP]
<?php
// check if form was submitted
if($_POST['send']){
// open client connection to TCP server
if(!$fp=fsockop en('192.168.1.3 4',2222,$errstr ,$errno,30)){
trigger_error(' Error opening socket',E_USER_ ERROR);
}
$message=$_POST['message'];
// write message to socket server
fputs($fp,$mess age);
// get server response
$ret=fgets($fp, 102400);
// close socket connection
fclose($fp);
echo '<strong>serve r output is following:- <br>'.$ret.'</strong>';
exit();
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
<html>
<head>
<title>TESTIN G TCP SOCKET SERVER</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-
8859-1" />
</head>
<body>
<h1>Enter the domain name</h1>
<form action="<?php echo $_SERVER['PHP_SELF']?>" method="post">
<input type="text" name="message" size="30" /><br />
<input type="submit" name="send" value="Check UP" />
</form>
</body>
</html>
[/PHP]
so can any one check for any fault in the code, it performs better at telnet prob seems with writing and getting data from client.
Any responses will be highly apericitated
3  2169  ak1dnar 1,584
Recognized Expert Top Contributor
You've posted this thread in the php articles section, rather than the forum. Please use the php forum, for technical questions in future. Thanks!
pbmods 5,821
Recognized Expert Expert
Heya, Khu. Welcome to TSDN!
If you're getting a blank page, your script is probably generating an error. Check out this article to find out what is going on.
Heya, Khu. Welcome to TSDN!
If you're getting a blank page, your script is probably generating an error. Check out this article to find out what is going on.
The page loads well but it did not show any data that server may have passed it back... My error reporting is on, on the development system so its definately not the reason problem is with fetching back the data... Can you or some one else can look further into it.
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